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1Z0-058 | Oracle Real Application Clusters 11g(R) Release 2 and Grid Infrastructure Administration

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1Z0-058 - Oracle Real Application Clusters 11g(R) Release 2 and Grid Infrastructure Administration - braindump

Vendor Oracle
Exam Number 1Z0-058
Exam Name Oracle Real Application Clusters 11g(R) Release 2 and Grid Infrastructure Administration
Questions 139 Q & A
Recent Update December 7, 2018
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1Z0-058 exam Dumps Source : Oracle Real Application Clusters 11g(R) Release 2 and Grid Infrastructure Administration

Test Code : 1Z0-058
Test Name : Oracle Real Application Clusters 11g(R) Release 2 and Grid Infrastructure Administration
Vendor Name : Oracle
Q&A : 139 Real Questions

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Oracle Database 12c unlock 2 real application Clusters guide: ideas, Administration, Tuning & Troubleshooting | killexams.com Real Questions and Pass4sure dumps

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grasp Oracle Database 12c free up 2 real utility Clusters with this complete, absolutely up-to-date guideNow that you would be able to maintain a dynamic enterprise computing infrastructure with expert guide from an Oracle ACE. Oracle Database 12c free up 2 actual application Clusters handbook: concepts, Administration, Tuning, and Troubleshooting has been completely revised and up to date to cowl the newest tools and contours. learn how to put together your hardware, deploy Oracle true application Clusters, and integrate seamless failover protection. Troubleshooting, performance tuning, and software building are also discussed in this comprehensive Oracle Press e-book.*install and configure Oracle Database 12c liberate 2 true application Clusters*Configure and manage disk agencies the usage of Oracle automated Storage administration*Work with services, balloting disks, and Oracle Clusterware repository*Diagnose efficiency complications with Oracle Wait Interface*seem to be beneath the hood of Cache Fusion and international resource directory operations*discover the inside workings of backup and healing in Oracle real utility Clusters*make use of workload balancing and clear utility Failover*Troubleshoot Oracle Clusterware the use of advanced diagnostics*advance custom Oracle true utility Clusters purposes

k. Gopalakrishnan (Gopal) is an award-successful coauthor ("Oracle writer of the year 2005"-Oracle journal) of Oracle Wait Interface (Oracle Press). He additionally authored Oracle Database 10g true application Clusters additionally from Oracle Press (Nov 2006). He has posted articles in quite a few international Magazines and is recognized as one of the main database efficiency tuning experts on earth. Oracle know-how network additionally acknowledges him as an Oracle ACE. Gopal has worked with a few of the largest and busiest databases on the planet and has deep experience within the performance management and tuning of very big on-line transactional databases. Sam R. Alapati is an skilled Oracle DBA who holds the Oracle OCP DBA (11g) certification and the Hewlett-Packard UNIX device Administrator certification. He presently manages Oracle databases at the Boy Scouts of Americas countrywide office in Irving, Texas. prior to now, Sam labored for AMR Holdings (Sabre) and the Blanch company in Dallas. Sam become a Senior most important consultant for Oracle corporation in manhattan, through which skill he worked at NBC and Lehman Brothers. moreover being knowledgeable Oracle database administrator, Sam has also taught Oracle DBA courses for many students. Sam taught school degree lessons at Kansas State tuition, university of Texas at Austin, and Rutgers university.

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Oracle Clusterware and Oracle actual application Clusters | killexams.com Real Questions and Pass4sure dumps

This chapter introduces Oracle Clusterware and Oracle true application Clusters (Oracle RAC) by means of describing these products as well as the way to set up, administer, and set up them. This chapter describes Oracle Clusterware and Oracle RAC architectures as neatly because the software and hardware components for both of these items. This chapter additionally in brief describes workload administration, features, and high availability for each single-instance Oracle databases and Oracle RAC environments. This chapter contains right here subject matters:

Oracle Clusterware and Oracle real utility Clusters

A cluster includes numerous interconnected computer systems or servers that seem like they're one server to end clients and functions. Oracle Database 10g precise software Clusters (Oracle RAC) enables the clustering of the Oracle Database. Oracle RAC uses Oracle Clusterware for the infrastructure to bind distinctive servers so that they function as a single equipment.

Oracle Clusterware is a portable cluster management answer it truly is integrated with the Oracle database. The Oracle Clusterware is additionally a required part for using Oracle RAC. in addition, Oracle Clusterware permits both single-illustration Oracle databases and Oracle RAC databases to make use of the Oracle excessive availability infrastructure. The Oracle Clusterware allows you to create a clustered pool of storage for use with the aid of any combination of single-example and Oracle RAC databases.

Oracle Clusterware is the best clusterware that you need for many structures on which Oracle RAC operates. that you could also use clusterware from different carriers if the clusterware is certified for Oracle RAC.

Single-instance Oracle databases have a one-to-one relationship between the Oracle database and the example. Oracle RAC environments, youngsters, have a one-to-many relationship between the database and circumstances. In Oracle RAC environments, the cluster database cases access one database. The mixed processing power of the diverse servers can supply greater throughput and scalability than is purchasable from a single server. Oracle RAC is the Oracle Database option that gives a single gadget photograph for varied servers to access one Oracle database. In Oracle RAC, every Oracle example constantly runs on a separate server.

Oracle RAC is a unique expertise that offers excessive availability and scalability for all software types. The Oracle RAC infrastructure is also a key element for implementing the Oracle business grid computing architecture. Having numerous situations access a single database prevents the server from being a single factor of failure. Oracle RAC makes it possible for you to mix smaller commodity servers into a cluster to create scalable environments that support mission vital enterprise applications. purposes that you just installation on Oracle RAC databases can operate devoid of code adjustments.

The Oracle Clusterware structure and Oracle Clusterware Processing

The Oracle Clusterware is software that when put in on servers running the same working gadget, allows the servers to be sure together to function as in the event that they have been one server. The Oracle Clusterware requires two clusterware add-ons: a balloting disk to listing node membership tips and the Oracle Cluster Registry (OCR) to checklist cluster configuration tips. The balloting disk and the OCR must stay on shared storage. The Oracle Clusterware requires that each and every node be related to a personal community by means of a personal interconnect.

The private interconnect that Oracle Clusterware requires is a separate community that you configure between the cluster nodes. This interconnect, which is required by means of Oracle RAC, can also be the same community that the clusterware makes use of, but the interconnect may still not be purchasable via nodes that are not a part of the cluster.

Oracle recommends that you just configure a redundant interconnect to steer clear of the interconnect from being a single element of failure. Oracle also recommends that you simply use user Datagram Protocol (UDP) on a Gigabit Ethernet on your cluster interconnect. Crossover cables don't seem to be supported to be used with Oracle Clusterware or Oracle RAC databases.

The Oracle Clusterware manages node membership and prevents cut up brain syndrome wherein two or more cases attempt to control the database. this may happen in circumstances the place there is a ruin in communique between nodes in the course of the interconnect.

The Oracle Clusterware architecture supports excessive availability by means of automatically restarting stopped accessories. The Oracle Clusterware can automatically re-delivery a node to avoid problems with that node from affecting the provision of the rest of the Oracle RAC ambiance. In an Oracle RAC environment, all Oracle strategies are below the handle of the Oracle clusterware. The Oracle Clusterware additionally provides an application programming interface (API) that allows you to manage different Oracle methods with Oracle Clusterware.

Oracle Clusterware utility component Processing particulars

The Oracle Clusterware contains several history tactics that facilitate cluster operations. The Cluster Synchronization service (CSS), adventure administration (EVM), and Oracle Cluster add-ons speak with different cluster part layers in the other cases in the identical cluster database ambiance. These components are additionally the leading communique hyperlinks between the Oracle Clusterware high availability add-ons and the Oracle Database. moreover, these components computer screen and manage database operations.

right here record describes the capabilities of one of the predominant Oracle Clusterware add-ons. This listing comprises these components which might be procedures on Unix and Linux working techniques or services on windows.

word:

On windows-primarily based working programs, most of the accessories are threads of the Oracle technique in its place of separate tactics.
  • Cluster Synchronization services (CSS)—Manages the cluster configuration by using controlling which nodes are participants of the cluster and by notifying members when a node joins or leaves the cluster. if you are the use of third-party clusterware, then the css process interfaces together with your clusterware to control node membership counsel.

  • Cluster able functions (CRS)—The primary program for managing excessive availability operations inside a cluster. the rest that the crs system manages is called a cluster resource which is usually a database, an instance, a service, a Listener, a digital IP (VIP) handle, an software process, etc. The crs process manages cluster supplies in line with the resource's configuration tips that is stored in the OCR. This includes delivery, cease, video display and failover operations. The crs manner generates movements when a resource reputation alterations. in case you have installed Oracle RAC, crs screens the Oracle illustration, Listener, and so forth, and automatically restarts these add-ons when a failure occurs. with the aid of default, the crs procedure makes five attempts to restart a resource and then does not make additional restart attempts if the aid does not restart.

  • adventure administration (EVM)—A history process that publishes pursuits that crs creates.

  • Oracle Notification service (ONS)—A publish and subscribe carrier for speaking quick utility Notification (FAN) pursuits.

  • RACG—Extends clusterware to aid Oracle-specific requirements and complicated supplies. Runs server callout scripts when FAN hobbies turn up.

  • system video display Daemon (OPROCD)—This system is locked in reminiscence to display screen the cluster and supply I/O fencing. OPROCD performs its assess, stops operating, and if the awaken is beyond the expected time, then OPROCD resets the processor and reboots the node. An OPROCD failure effects in Oracle Clusterware restarting the node. OPROCD makes use of the hangcheck timer on Linux structures.

  • In the following desk, if a method has a (r) beside it, then the process runs because the root user. otherwise the technique runs because the oracle consumer.

    table 1-1 checklist of processes and windows functions associated with Oracle Clusterware

    Oracle Clusterware element Linux/Unix technique windows facilitiesWindows procedures

    method display screen Daemon

    oprocd (r)

    OraFenceService

    RACG

    racgmain, racgimon

    racgmain.exe racgimon.exe

    Oracle Notification provider (ONS)

    ons

    ons.exe

    experience supervisor

    evmd (r), evmd.bin, evmlogger

    OracleEVMService

    evmlogger.exe, evmd.exe

    Cluster competent

    crsd.bin (r)

    OracleCRSService

    crsd.exe

    Cluster Synchronization functions

    init.cssd (r), ocssd (r), ocssd.bin

    OracleCSService

    ocssd.exe

    The Oracle Clusterware software accessories

    When Oracle Clusterware operates, a few platform-particular tactics or functions will even be working on each and every node in the cluster to help Oracle Clusterware. The Oracle Clusterware platform-particular UNIX-primarily based approaches and windows-based mostly services are described below right here headings:

    Oracle Clusterware methods on UNIX-based methods

    The Oracle Clusterware strategies on UNIX-primarily based programs are:

  • crsd—Performs high availability recovery and management operations similar to retaining the OCR and managing application substances. This procedure runs as the root consumer, or by using a person within the admin neighborhood on Mac OS X-primarily based systems. This method restarts automatically upon failure.

  • evmd—adventure manager daemon. This system also starts the racgevt procedure to control FAN server callouts.

  • ocssd—Manages cluster node membership and runs because the oracle consumer; failure of this process consequences in cluster restart.

  • oprocd—method display screen for the cluster. word that this system simplest seems on platforms that do not use dealer clusterware with Oracle Clusterware.

  • note:

    Oracle RAC on Linux systems can have assorted threads that seem as separate approaches with separate technique identifiers. Oracle Clusterware services on home windows-based mostly methods

    The Oracle Clusterware capabilities on home windows-primarily based systems are:

  • OracleCRService—Performs high availability restoration and administration operations comparable to retaining the OCR and managing software substances. This system runs as the root person, or with the aid of a user within the admin community on Mac OS X-primarily based techniques. This manner restarts instantly upon failure.

  • OracleCSService—Manages cluster node membership and runs as oracle consumer; failure of this system outcomes in cluster restart.

  • OracleEVMService—event manager daemon. This method also starts the racgevt method to manipulate FAN server callouts.

  • OraFenceService—manner monitor for the cluster. word that this manner best looks on platforms that don't use vendor clusterware with Oracle Clusterware.

  • The Oracle precise application Clusters structure and Oracle true software Clusters Processing

    An Oracle RAC database is a logically or bodily shared every little thing database. All datafiles, control information, PFILEs, and redo log info in Oracle RAC environments need to stay on cluster-aware shared disks so that all the cluster database circumstances can access them. all of the situations must also share the identical interconnect. in addition, Oracle RAC databases can share the equal interconnect that Oracle Clusterware makes use of.

    because an Oracle RAC database makes use of a shared everything architecture, Oracle RAC requires cluster-aware storage for all database information. it's your alternative as to a way to configure your disk, however you need to use a supported cluster-mindful storage answer. Oracle Database 10g offers computerized Storage administration (ASM), which is the suggested answer to manage your disk. although you might also additionally use a cluster-conscious extent manager or a cluster file device (no longer required). In Oracle RAC, the Oracle Database application manages disk entry and the Oracle utility is certified for use on plenty of storage architectures. An Oracle RAC database can have up to 100 instances. counting on your platform, you can use here file storage alternate options for Oracle RAC:

  • ASM, which Oracle recommends

  • Oracle Cluster File system (OCFS), which is attainable for Linux and home windows systems, or a 3rd-celebration cluster file gadget that is licensed for Oracle RAC

  • A network file system

  • raw contraptions

  • Oracle RAC databases vary architecturally from Oracle RACsingle-illustration Oracle databases in that each and every Oracle RAC database instance also has:

    All nodes in an Oracle RAC ambiance need to hook up with a native enviornment network (LAN) to enable users and applications to entry the database. functions should still use the Oracle Database features characteristic to connect with an Oracle database. functions permit you to outline suggestions and characteristics to manage how clients and purposes connect to database situations. These qualities consist of a different identify, workload balancing and failover alternate options, and excessive availability characteristics. Oracle web capabilities allows the load balancing of software connections across the entire instances in an Oracle RAC database.

    clients can access an Oracle RAC database using a consumer-server configuration or via one or more core tiers, with or devoid of connection pooling. clients will also be DBAs, builders, software users, vigour clients, akin to records miners who create their own searches, and so on.

    Most public networks customarily use TCP/IP, but that you can use any supported hardware and software mixture. Oracle RAC database situations may also be accessed via a database's defined, default IP handle and through VIP addresses.

    be aware:

    don't to use the interconnect or the private network for user communique as a result of Cache Fusion makes use of the private interconnect for inter-illustration communications.

    apart from the node's host name and IP handle, you should additionally assign a digital host name and an IP tackle to each node. The virtual host identify or VIP should be used to connect with the database example. for example, you might enter the digital host identify CRM in the tackle record of the tnsnames.ora file.

    A virtual IP address is an alternate public handle that customer connections use in its place of the standard public IP handle. To configure VIP addresses, you need to reserve a spare IP tackle for every node that uses the identical subnet because the public network.

    If a node fails, then the node's VIP fails over to an extra node on which the VIP cannot accept connections. commonly, VIPs fail over when the node on which a VIP runs fails or if all interfaces for the VIP fail or are disconnected from the network. valued clientele that try to connect with the VIP get hold of a quick connection refused error as a substitute of anticipating TCP connect timeout messages. You configure VIP addresses within the tackle list on your database connection definition to permit connectivity. here part describes the Oracle RAC software accessories in additional detail.

    The Oracle precise software Clusters utility add-ons

    Oracle RAC databases have two or extra database instances that each and every include reminiscence structures and heritage tactics. An Oracle RAC database has the identical approaches and reminiscence buildings as a single-example Oracle database as well as further method and reminiscence constructions that are particular to Oracle RAC. any one illustration's database view is well-nigh just like every other instance's view within the same Oracle RAC database; the view is a single equipment image of the atmosphere.

    each illustration has a buffer cache in its system world enviornment (SGA). the usage of Cache Fusion, Oracle RAC environments logically mix each instance's buffer cache to enable the situations to procedure information as if the statistics resided on a logically combined, single cache.

    note:

    The SGA dimension requirements for Oracle RAC are enhanced than the SGA requirements for single-instance Oracle databases due to Cache Fusion.

    To make sure that each Oracle RAC database illustration obtains the block that it should fulfill a question or transaction, Oracle RAC situations use two tactics, the world Cache carrier (GCS) and the world Enqueue provider (GES). The GCS and GES hold information of the statuses of every statistics file and each cached block the use of a global resource directory (GRD). The GRD contents are allotted across all of the lively instances, which conveniently increases the size of the system world area for an Oracle RAC example.

    After one example caches data, some other illustration inside the same cluster database can purchase a block picture from yet another illustration within the same database sooner than by way of analyzing the block from disk. therefore, Cache Fusion moves latest blocks between instances instead of re-studying the blocks from disk. When a constant block is required or a changed block is required on a further instance, Cache Fusion transfers the block photo without delay between the affected circumstances. Oracle RAC uses the inner most interconnect for inter-example conversation and block transfers. The global Enqueue provider monitor and the example Enqueue procedure manages access to Cache Fusion supplies in addition to enqueue recuperation processing.

    These Oracle RAC procedures and the GRD collaborate to permit Cache Fusion. The Oracle RAC methods and their identifiers are as follows:

  • LMS—world Cache carrier manner

  • LMD—global Enqueue service Daemon

  • LMON—world Enqueue carrier display screen

  • LCK0—example Enqueue method

  • if you use community attached Storage (NAS), then you are required to configure a 2d inner most community. access to this network is customarily managed by the seller's utility. The inner most network makes use of static IP addresses.

    be aware:

    many of the Oracle components that this part describes are apart from the add-ons that are described for single-example Oracle databases in Oracle Database ideas. Oracle Clusterware components and high Availability

    in the event you combine Oracle Clusterware and Oracle RAC, you can achieve magnificent scalability and excessive availability. The Oracle Clusterware achieves this the use of the accessories that this part describes beneath here issues:

    The Oracle Clusterware vote casting Disk and Oracle Cluster Registry

    The Oracle Clusterware requires here two essential data:

  • voting Disk—Manages cluster membership by means of a health examine and arbitrates cluster possession among the many cases in case of community disasters. Oracle RAC uses the vote casting disk to investigate which instances are members of a cluster. The voting disk should reside on shared disk. for high availability, Oracle recommends that you have distinct voting disks. The Oracle Clusterware permits diverse balloting disks however you have to have an abnormal variety of voting disks, reminiscent of three, 5, and the like. in case you define a single vote casting disk, then be sure you use external mirroring to give redundancy.

  • Oracle Cluster Registry (OCR)—keeps cluster configuration advice in addition to configuration advice about any cluster database inside the cluster. The OCR also manages suggestions about processes that Oracle Clusterware controls. The OCR outlets configuration information in a sequence of key-cost pairs inside a listing tree constitution. The OCR ought to dwell on shared disk it really is purchasable by way of all of the nodes on your cluster. The Oracle Clusterware can multiplex the OCR and Oracle recommends that you simply use this feature to make sure cluster excessive availability. that you would be able to substitute a failed OCR on-line, and you'll replace the OCR through supported APIs similar to commercial enterprise supervisor, the Server control Utility (SRVCTL), or the Database Configuration Assistant (DBCA).

  • notice:

    both the balloting disks and the OCRs ought to dwell on either cluster file device info or on shared uncooked instruments that you simply configure prior to installing Oracle Clusterware and Oracle RAC. Oracle Clusterware excessive Availability and the utility Programming Interface

    Oracle Clusterware provides a high availability utility programming interface (API) so you might use to permit Oracle Clusterware to control purposes or techniques that run a cluster. This makes it possible for you to provide excessive availability for all your applications. The Oracle Clusterware with ASM makes it possible for you to create a consolidated pool of storage to help each the only-illustration Oracle databases and the Oracle RAC databases which are operating in your cluster.

    To keep excessive availability, Oracle Clusterware accessories can reply to fame changes to restart purposes and tactics in accordance with described excessive availability suggestions. in addition, that you may use the Oracle Clusterware excessive availability framework by registering your applications with Oracle Clusterware and configuring the clusterware to beginning, stop, or relocate your utility procedures. this is, you can make custom purposes totally purchasable through the use of Oracle Clusterware to create profiles that computer screen, relocate, and restart your applications. The Oracle Clusterware responds to FAN events which are created via an Oracle RAC database. Oracle pronounces FAN hobbies when cluster servers may turn into unreachable and community interfaces are sluggish or non-purposeful.

    Workload administration with Oracle precise utility Clusters

    Workload management makes it possible for you to control the distribution of workloads to provide optimum performance for users and functions. This contains providing the optimum availability for database connections, speedy failure restoration, and balancing workloads optimally throughout the lively configuration. Oracle Database 10g with Oracle RAC includes many aspects that may enhance workload administration equivalent to connection load balancing, quickly connection failover (FCF), the burden balancing advisory, and Runtime Connection Load Balancing. Workload administration provides the most suitable benefits to Oracle RAC environments. that you could, however, take knowledge of workload management through the use of Oracle capabilities in single-instance Oracle Databases, in particular those that use information take care of or Streams. Workload administration includes here components:

  • excessive Availability Framework—The Oracle RAC excessive availability framework permits the Oracle Database to keep accessories in a working state consistently. Oracle high availability implies that Oracle Clusterware monitors and restarts vital accessories if they cease, except you override the restart processing. The Oracle Clusterware and Oracle RAC additionally supply indicators to purchasers when configurations alternate. This makes it possible for valued clientele to automatically react to the alterations, enabling utility builders to disguise outages and reconfigurations from conclusion clients. The scope of Oracle high availability spans from the restarting of stopped Oracle techniques in an Oracle database instance to failing over the processing of an entire example to different accessible instances.

  • Load Balancing Advisory—here is the skill of the database to provide information to purposes about the present service levels being offered with the aid of the database and its circumstances. purposes can take talents of this assistance to direct connection requests to the instance in an effort to provide the utility request with the greatest provider quality to finished the application's processing. Oracle has built-in its Java Database Connectivity (JDBC) and Oracle statistics provider for .internet (ODP.net) connection swimming pools to work with the load balancing counsel. applications can use the integrated connection pools without programmatic changes.

  • features—Oracle Database 10g introduces a magnificent computerized workload management facility, called services, to enable the business grid imaginative and prescient. features are entities so that you can define in Oracle RAC databases. functions enable you to neighborhood database workloads and route the work to the premiere circumstances which are assigned to process the carrier. moreover, you can use capabilities to define the supplies that Oracle assigns to system workloads and to monitor workload materials. functions that you simply assign to features transparently acquire the defined workload administration characteristics, together with high availability and load balancing rules. Many Oracle database points are integrated with services, akin to useful resource supervisor, which enables you to avert the components that a service can use within an illustration. Some database aspects are also built-in with Oracle Streams, superior Queuing, to obtain queue vicinity transparency, and the Oracle Scheduler, to map features to particular job courses.

    In Oracle RAC databases, the carrier performance guidelines that you configure control the amount of labor that Oracle allocates to each and every accessible example for that service. As you lengthen your database by adding nodes, applications, components of functions, and so on, which you can add extra features.

  • Connection Load Balancing— Oracle web capabilities offers connection load balancing for database connections. Connection load balancing occurs when the connection is created. Connections for a given service are balanced across the entire operating situations that present the carrier. be sure to define how you desire connections to be balanced in the provider definition. despite the fact, you have to still configure Oracle internet capabilities. in the event you permit the burden balancing advisory, the Listener makes use of the burden balancing advisory for connection load balancing.

  • Introduction to setting up Oracle Clusterware and Oracle true utility Clusters

    This part introduces the storage alternate options for Oracle RAC and the setting up processes for both Oracle Clusterware and Oracle RAC beneath right here topics:

    Oracle Clusterware installation technique Description

    The Oracle Clusterware is distributed on the Oracle Database 10g installation media. The Oracle frequent Installer (OUI) installs Oracle Clusterware into a listing structure, which can be referred to as CRS_home, that is break away different Oracle utility running on the machine. as a result of Oracle Clusterware works intently with the operating system, equipment administrator access is required for one of the crucial installation tasks. additionally, some of the Oracle Clusterware procedures have to run as the gadget administrator, which is frequently the foundation consumer on Unix and Linux techniques and the equipment Administrator person on windows programs.

    before you install Oracle Clusterware, Oracle recommends that you just run the Cluster Verification Utility (CVU) to ensure that your atmosphere meets the Oracle Clusterware installing necessities. The OUI also automatically runs CVU at the end of the clusterware setting up to investigate quite a lot of clusterware accessories. The CVU simplifies the installing, configuration, and overall management of the Oracle Clusterware installing procedure through deciding upon complications in cluster environments.

    all the way through the Oracle Clusterware installation, you must establish three IP addresses for each node that is going to be part of your installing. One IP tackle is for the inner most interconnect and the different is for the general public interconnect. The third IP handle is the digital IP address that shoppers will use to hook up with each and every instance.

    The Oracle Clusterware setting up method creates the vote casting disk and OCR on cluster-mindful storage. if you choose the choice for common redundant copies all the way through the installation system, then Oracle Clusterware automatically keeps redundant copies of those files to steer clear of the information from becoming single aspects of failure. The regular redundancy feature additionally eliminates the need for third celebration storage redundancy solutions. in case you use common redundancy, Oracle Clusterware instantly continues two copies of the Oracle Cluster Registry (OCR) file and three copies of the balloting Disk file.

    be aware:

    in case you choose external redundancy for the OCR and vote casting disk, then to allow redundancy, your disk subsystem should be configurable for RAID mirroring. in any other case, your equipment may be susceptible because the OCR and balloting disk are single features of failure. Oracle precise software Clusters setting up and Database creation method Description

    The Oracle RAC application is distributed as a part of the Oracle Database 10g setting up media. with the aid of default, the ordinary Oracle Database 10g software installation manner installs the Oracle RAC choice when it acknowledges that you are performing the setting up on a cluster. The OUI installs Oracle RAC right into a listing constitution, which can be called Oracle_home, it's break away different Oracle utility running on the computing device. as a result of OUI is cluster-mindful, it installs the Oracle RAC utility on all the nodes that you simply described to be a part of the cluster. if you're the use of a licensed cluster file equipment for the Oracle home, then handiest opt for the node that you are linked to for the installing.

    You have to first deploy Oracle Clusterware before setting up Oracle RAC. After Oracle Clusterware is operational, that you could use OUI to install the Oracle database utility with the Oracle RAC add-ons. during the installation, OUI runs DBCA to create your Oracle RAC database based on the alternate options that you simply choose. The DBCA additionally runs the internet Configuration Assistant (NETCA) to configure the network to your Oracle RAC environment.

    Oracle recommends that you just choose ASM during the installation to simplify storage administration; ASM instantly manages the storage of all database info inside disk organizations. which you could additionally configure features all the way through installation, counting on your processing necessities. if you are the use of the Oracle Database 10g standard edition, then you definately should use ASM for storing all of the database info.

    by default, DBCA creates one carrier to your environment and this service is for the database. The default carrier is accessible on all circumstances in an Oracle RAC atmosphere, until the database is in confined mode.

    Cloning Oracle Clusterware and Oracle RAC software in Grid Environments

    This section in short summarizes the techniques for deploying Oracle RAC in grid environments which have colossal numbers of nodes the usage of cloned photos for Oracle Clusterware and Oracle RAC. Oracle cloning is the favorite method of extending your Oracle RAC environment by means of including nodes and situations. To function the cloning strategies that are summarized during this area, refer to the Oracle customary Installer and OPatch consumer's e-book.that you may also use enterprise manager Grid control to operate cloning.

    The cloning procedure assumes that you simply efficaciously put in an Oracle Clusterware domestic and an Oracle home with Oracle RAC on as a minimum one node. in addition, all root scripts need to have run efficaciously on the node from which you are extending your cluster database. to make use of Oracle cloning, first clone the Oracle Clusterware home and then clone the Oracle domestic with the Oracle RAC application.

    To clone the Oracle Clusterware domestic, on UNIX-based programs create a tar file of the Oracle Clusterware home and copy the file to the brand new node's Oracle Clusterware home. On windows-primarily based techniques you have to create zip data. Then on UNIX-based mostly programs create the required users and companies on the new nodes. On windows-primarily based methods, you do not need to create clients and organizations, but the consumer that performs the cloning should be the equal consumer that carried out the installation.

    Extract the tar file, or unzip the zip file, and run the Oracle common Installer (OUI) in clone mode as described within the Oracle prevalent Installer and OPatch person's e-book. Then run the installing scripts and repeat these steps on each and every node that you're including. The procedure for cloning the Oracle home onto new nodes is comparable to the system for cloning the Oracle Clusterware home. additionally, you must run the Oracle internet Configuration Assistant (NETCA) on each new node to create a Listener.

    in case you have not already created a database, then that you would be able to run the Database Configuration Assistant (DBCA) to create one. ultimately, comply with the put up-cloning processes to complete the extension of your Oracle RAC ambiance onto the new nodes.

    extra concerns and features for Oracle actual software Clusters

    in addition to configuring functions to manage your workloads, additionally accept as true with the use of here features in case you set up Oracle RAC:

  • Scaling Your Oracle RAC Database—As outlined, you can add nodes and situations to your Oracle RAC atmosphere the use of Oracle cloning. in case you choose to now not use cloning, then that you can extend your database through the use of the manual approaches that are described in Chapter 10, "including and Deleting Nodes and circumstances on UNIX-based programs" or Chapter 11, " adding and Deleting Nodes and situations on home windows-based methods".

  • business supervisor—Use enterprise supervisor to manage your complete Oracle RAC ambiance, now not simply the Oracle RAC database. Use commercial enterprise supervisor to create and adjust services, and to start and stop the cluster database situations and the cluster database. business manager has additional facets as exact within the part "Overview of the use of business manager with Oracle true application Clusters".

  • recovery supervisor (RMAN)—RMAN backs up, restores, and recovers datafiles, handle information, server parameter files (SPFILEs) and archived redo logs. which you can use RMAN with a media manager to again up files to external storage. which you can also configure parallelism when backing up or convalescing Oracle RAC databases. In Oracle RAC, RMAN channels can be dynamically allocated throughout all the Oracle RAC cases. Channel failover allows failed operations on one node to proceed on one more node. that you could use RMAN in Oracle RAC from the Oracle commercial enterprise manager Backup supervisor or from a command line.

  • computerized undo administration—instantly manages undo processing.

  • computerized phase house administration (ASSM)—immediately manages section freelists and freelist corporations.

  • locally managed tablespaces—Enhances space management efficiency.

  • Cluster Verification Utility (CVU)—Use CVU to determine the repute of your clusterware in case you experience issues or use it every time you reconfigure your cluster.

  • Sequences—if you use sequence numbers, then always use CACHE with the NOORDER choice for most useful sequence number technology efficiency. With the CACHE choice, despite the fact, you might also have gaps in the sequence numbers. if your atmosphere can not tolerate sequence quantity gaps, then use the NOCACHE choice or accept as true with pre-generating the sequence numbers. in case your utility requires sequence number ordering however can tolerate gaps, then use CACHE and ORDER to cache and order sequence numbers in Oracle RAC. in case your application requires ordered sequence numbers with out gaps, then use NOCACHE and ORDER. This mixture has essentially the most poor impact on performance compared to different caching and ordering combinations.

  • Indexes—in case you use indexes, accept as true with alternatives, similar to reverse key indexes, to optimize index efficiency. Reverse key indexes are peculiarly constructive if in case you have widely wide-spread inserts to 1 side of an index, such as indexes which are according to insert date.

  • Managing Oracle true utility Clusters Environments

    This section describes right here Oracle RAC atmosphere management issues:

    Designing Oracle actual software Clusters Environments

    accept as true with performing here steps all through the design and building of applications that you're deploying on an Oracle RAC database. trust tuning:

  • The design and the software

  • The reminiscence and that i/O

  • competition

  • The operating system

  • observe:

    If an utility does not scale on an SMP desktop, then moving the utility to an Oracle RAC database can not enrich performance.

    consider the usage of hash partitioning for insert-intensive online transaction processing (OLTP) applications. Hash partitioning:

  • Reduces contention on concurrent inserts into a single database constitution

  • impacts sequence-based mostly indexes when indexes are locally partitioned with a table and tables are partitioned on sequence-primarily based keys

  • Is transparent to the application

  • in case you hash partitioned tables and indexes for OLTP environments, then that you may greatly improve efficiency on your Oracle RAC database. note that you simply cannot use index latitude scans on an index with hash partitioning.

    when you are using sequence numbers, then always use the CACHE option. if you use sequence numbers with the CACHE alternative, then:

    Administrative tools for Oracle true utility Clusters Environments

    Oracle allows for you to manage a cluster database as a single gadget image via commercial enterprise manager, SQL*Plus, or via Oracle RAC command-line interfaces similar to Server control (SRVCTL). that you would be able to also use a few tools and utilities to control your Oracle RAC environment and its accessories as follows:

  • business supervisor—commercial enterprise supervisor has both the Database control and Grid control GUI interfaces for managing both single instance and Oracle RAC environments.

  • Cluster Verification Utility (CVU)—CVU is a command-line tool so you might use to check various cluster and Oracle RAC-specific components corresponding to shared storage devices, networking configurations, system requirements, and Oracle Clusterware, as well as working device agencies and clients. that you may use CVU for pre-installing checks as well as for submit-installing exams of your cluster atmosphere. CVU is certainly useful all through pre-setting up and all through installation of Oracle Clusterware and Oracle RAC accessories. The OUI runs CVU after Oracle Clusterware and the Oracle setting up to verify your environment.

  • Server handle (SRVCTL)—SRVCTL is a command-line interface so you might use to manipulate an Oracle RAC database from a single factor. you can use SRVCTL to birth and prevent the database and instances and to delete or circulation circumstances and capabilities. which you can additionally use SRVCTL to manipulate configuration advice.

    See also:

    Appendix E for extra counsel about SRVCTL
  • Cluster competent functions handle (CRSCTL)—CRSCTL is a command-line device so that you can use to control Oracle Clusterware. that you can use CRSCTL to start and prevent Oracle Clusterware. CRSCTL has many options similar to enabling online debugging,

  • Oracle Interface Configuration tool (OIFCFG)—OIFCFG is a command-line device for each single-instance Oracle databases and Oracle RAC environments that you can use to allocate and de-allocate community interfaces to accessories. which you could additionally use OIFCFG to direct accessories to make use of selected community interfaces and to retrieve component configuration tips.

  • OCR Configuration device (OCRCONFIG)—OCRCONFIG is a command-line tool for OCR administration. that you can also use the OCRCHECK and OCRDUMP utilities to troubleshoot configuration issues that affect the OCR.

  • Monitoring Oracle precise application Clusters Environments

    internet-based mostly business manager Database manage and Grid manage permit you to display screen an Oracle RAC database. The business supervisor Console is a principal element of control for the Oracle environment that you entry by means of a graphical person interface (GUI). Use the commercial enterprise supervisor Console to provoke cluster database administration tasks. Use enterprise manager Grid control to manage multiple Oracle RAC databases. additionally note here elements about monitoring Oracle RAC environments:

  • The global views, or GV$ views, are in keeping with V$ views. The catclustdb.sql script creates the GV$ views. Run this script in case you do not create your database with DBCA. otherwise, DBCA runs this script for you.

  • Statspack is Oracle RAC-mindful.

    notice:

    as an alternative of the use of Statspak, Oracle recommends that you simply use the greater sophisticated management and monitoring aspects of the Oracle Database 10g Diagnostic and Tuning packs which include the automatic Database Diagnostic display screen (ADDM).
  • Evaluating efficiency in Oracle true application Clusters Environments

    You do not should operate special tuning for Oracle RAC; Oracle RAC scales devoid of particular configuration adjustments. in case your application carried out neatly on a single-illustration Oracle database, then it'll operate neatly in an Oracle RAC environment. lots of the tuning tasks that you'd operate on a single-instance Oracle database can also improve Oracle RAC database efficiency. here's very true in case your environment required scalability across a more advantageous number of CPUs.

    one of the crucial Oracle RAC performance aspects are:

  • Dynamic aid Allocation

  • Cache Fusion enables A Simplified Tuning Methodology

  • You won't have to tune any parameters for Cache Fusion

  • No application-level tuning is critical

  • that you would be able to use a backside-up tuning method with basically no impact for your latest purposes

  • extra specific efficiency statistics


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  • Enabling shoppers to rapidly set up a particularly purchasable, virtualized database, Oracle today announced the provision of new Oracle VM Templates for Oracle Database 11g unencumber 2 and Oracle true application Clusters.
  • by presenting pre-installed and pre-configured application photos, Oracle VM Templates supply an innovative method to deploying a totally configured software stack and permit virtual and cloud environments to be provisioned right now, with no trouble, normally, and with simplified administration.
  • the brand new Oracle VM Templates for Oracle true software Clusters deliver a quick and simple approach to installation a database cluster on Oracle VM for building, look at various and construction environments. Clusters of any number of nodes can be developed, and the complete setting up is computerized, inquiring for minimal suggestions from the person when guests are booted.
  • Combining the advantages of Oracle VM for x86 and Oracle precise application Clusters presents a totally purchasable database cloud answer with all of the merits of a totally virtualized environment.
  • the brand new Oracle VM Templates can be found in 32-bit or sixty four-bit gadget formats.
  • enjoyable aggregate of Virtualization and Clustering Speeds Time to Market and allows bigger Availability

  • Use of Oracle VM Templates tremendously simplifies setting up and configuration, helping in the reduction of initial and ongoing maintenance fees and enabling agencies to obtain quicker time to market and decrease cost of operations.
  • by way of deploying Oracle real application Clusters in Oracle VM environments with the new templates, purchasers can benefit from superior database availability.
  • The combination of Oracle VM and Oracle real utility Clusters makes it possible for continual availability within the face of hardware and application failures, an awful lot bigger availability than would traditionally be bought through hypervisor-best solutions from providers like VMware, that could only flow and restart failed virtual machines.
  • Oracle VM Templates are additionally attainable for Oracle purposes, Oracle Fusion Middleware, Oracle Database, Oracle Linux, Oracle Solaris and different Oracle items.
  • supporting Quote

  • "only Oracle presents the enjoyable combination of clustering and virtualization," talked about Wim Coekaerts, senior vp, Linux and Virtualization Engineering, Oracle. "the usage of an Oracle VM infrastructure combined with the performance, scalability and resiliency of Oracle real application Clusters and Oracle VM Templates, we assist purchasers significantly reduce deployment and operational charges whereas enabling a highly attainable infrastructure."
  • helping materials

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    Oracle Real Application Clusters 11g(R) Release 2 and Grid Infrastructure Administration

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    Breaking News—Oracle Database 11g Release 2 Now Available | killexams.com real questions and Pass4sure dumps

    Sep 1, 2009

    Oracle Database 11g Release 2 is generally available and downloadable today from the Oracle Technology Network (OTN). Improvements have been made in all key areas, with a general emphasis on helping customers lower their IT infrastructure costs.

    The new release represents the culmination of a journey Oracle began just over two years ago with Release 1 of 11g, Mark Townsend, vice president, Database Product Management, Oracle, tells 5 Minute Briefing. During that time roughly 1,500 developers have worked on the product and there have been more than 15 million hours of testing done on the product as well.

    Oracle 11g Release 2 delivers capabilities for reduced server costs by consolidating onto the Grid, reduced storage costs, improving performance for data warehouses as well as raising DBA productivity.

    Among the key capabilities, Oracle Real Application Clusters (RAC) delivers grid plug and play and new server pooling capabilities that enable organizations to reduce their server costs by streamlining the provisioning and management of consolidated database grids.

    Oracle RAC One Node, a new Database option, is also available today. This enables customers to run a single Database on a single node inside the grid, says Townsend. While it doesn't enable the scalability provided by having more than one node working on that database, Oracle RAC One Node is a solution that allows customers to more easily consolidate their less mission-critical database environments on the grid with the redundancy and availability provided by Oracle Real Application Clusters.

    Additionally, Oracle Database 11g Release 2 advanced compression and partitioning help reduce storage costs by compressing data as much as 2x-4x and simplifying the use of storage tiers. Enhancements to Automatic Storage Management include new cluster file system capabilities that extend beyond Oracle Databases to provide general-purpose file systems, helping customers further reduce their storage management costs.

    For improved performance in data warehouses, Oracle Database 11g R2 in combination with the Oracle Database Machine can deliver up to 10x faster query performance. Oracle Database 11g Release 2 also delivers enhanced query performance with the ability to transparently execute a query against data stored in memory across all the servers in a grid.

    Oracle Database 11g R2 Automatic Storage Management, Oracle RAC and Active Data Guard allow storage and server resources to be used for both fault tolerance and running production workloads, keeping servers and storage from sitting idle waiting for failures. In addition, a new feature called Edition-based Redefinition has been introduced to allow customer database applications to be upgraded online. "One of the things customers have always wanted to be able to do is online application upgrades," says Townsend.

    For more details about Oracle Database 11g Release 2, go here.


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    This latest generation of database builds on the innovations introduced in Oracle Database 11g to help organizations deliver better information throughout the enterprise, at a higher quality of service, and at a much lower cost.

    In this release, Oracle Real Application Clusters (RAC) delivers grid plug and play and new server pooling capabilities that enable organizations to reduce their server costs by streamlining the provisioning and management of consolidated database grids.

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    Oracle 11i vs. Oracle 11g | killexams.com real questions and Pass4sure dumps

    Is there an Oracle 11i and an 11g? If so, what is the difference? What are the other names for Oracle 11i and what is the suite made of?

    Oracle 11i refers to the Oracle ERP Application Suite (often called Oracle E-Business Suite) and really has nothing to do with the database. The latest release (12) will be referred to as 12i. The confusing part is that Oracle used to call its database "i" for "internet" in releases 8 and 9, but now calls the database "g" for "grid". So, to summarize, Oracle 11i refers to the apps and Oracle 11g refers to the database.



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