Oracle Real Application Clusters 12c Essentials Version 14.0

Oracle by Test-king

Number: 1z0-432Passing Score: 800Time Limit: 120 minFile Version: 14.0

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Exam code: Oracle 1z0-432

Exam name: Oracle Real Application Clusters 12c Essentials

Version 14.0

Exam A

QUESTION 1A node is evicted from a three-node cluster due to poor latency of the underlying storage. Which twostatements are correct in describing the instance recovery process?

A. Perform a restore of archive redo from flash recovery area to recover database.B. Upon startup, the SMON/LMS processes perform instance crash recovery.C. Upon startup of failed instance, the SMON process performs instance crash recovery by using

checkpoints to determine which data needs to be applied to data files.D. User intervention is not required. Upon startup, PMON (process monitor) performs instance crash

recovery automatically.E. User intervention is not required.

Correct Answer: BCSection: (none)Explanation

Explanation/Reference:

QUESTION 2What is the correct syntax to put a DATA1 disk offline for a failure group FG1, and drop it after fiveminutes?

A. ALTER DISKGROUP data OFFLINE DISK DATA1 IN FAILGROUP FG2 DROP AFTER 5m;B. It is not possible to drop it after five minutes.C. It is not possible to specify a disk In a FAILGROUP.D. ALTER DISKGROUP data OFFLINE DISKS IN FAILGROUP FG2 DROP AFTER 5m;E. ALTER DISKGROUP data OFFLINE DISK DATAI IN FAILGROUP FG2 DROP AFTER 5 minutes;

Correct Answer: ASection: (none)Explanation


QUESTION 3Which statement about Allocation Units is incorrect?

A. Every Oracle ASM disk is divided into allocation units (AUs)B. An AU is the fundamental unit of allocation within a disk group,C. A file extent consists of one or more AUs.D. The au size disk group attribute can have the following values; 1, 8, 16, 32, 64, or 128 MB.

Correct Answer: DSection: (none)Explanation

Explanation/Reference:Explanation: When you create a disk group, you can set the Oracle ASM allocation unit size with theAU_SIZE disk group attribute. The values can be 1, 2, 4, 8, 16, 32, or 64 MB, depending on the specificdisk group compatibility level. Larger AU sizes typically provide performance advantages for datawarehouse applications that use large sequential reads. Reference: http://docs.oracle.com/cd/E11882_01/server.112/e18951/asmcon.htm#OSTMG94061

QUESTION 4Which statement is true about the installation of Oracle Grid Infrastructure 12cR1 by using Oracle UniversalInstaller (QUI)?

A. You can use OUI to upgrade the entire Grid Infrastructure to 12cR1.B. You can use OUI to install Grid Infrastructure in an Oracle Restart configuration.C. You must use OUI to first install software only and then configure Oracle Clusterware and ASM.D. You can use OUI to upgrade Oracle ASM to more recent release than Oracle Clusterware.E. You can use OUI to install and configure a cluster that contains only hub nodes.

Correct Answer: CSection: (none)Explanation

Explanation/Reference:Explanation: This appendix describes how to perform Oracle Clusterware and Oracle Automatic StorageManagement (Oracle ASM) upgradesReference: https://docs.oracle.com/database/121/CWLIN/procstop.htm#CWLIN10001

QUESTION 5Your organization needs a new Oracle 12cR1 RAC environment. The decision is made to done a sting RACsystem to new servers using the clone.p1 method.


Which mandatory step must be performed before launching the clone procedure?

A. Install an Oracle 12cR1 Database home to use as a seeded environment.B. Ensure that the server meets all of the prerequisite requirements because the perl cione.p1 cloning

method does not check that.C. Copy the clone.pl utility to each target node.D. Restore a copy of the Oracle Cluster Registry to the target servers.E. Keep all target nodes network isolated until the cloning is finished on the first node and then join each to

the cluster network.

Correct Answer: ESection: (none)Explanation


QUESTION 6Which two statements about server pools are correct?

A. Server pools logically apportion a cluster into groups of servers offering database or applicationservices.

B. MAX_SIZE and importance are valid server pool attributes,C. You can configure each server pool with a maximum size. The minimum size cannot be configured.D. Oracle Clusterware manages availability between server pools automatically. It cannot be manually

configured.E. Servers are assigned to server pools by name.

Correct Answer: ADSection: (none)Explanation

Explanation/Reference:Explanation: Server pools logically apportion a cluster into groups of servers offering database orapplication services. Server pool properties control the scalability and availability of those databases andapplications. You can configure each server pool with a minimum and maximum size, which determinesscalability. Oracle Clusterware manages availability between server pools, and you can further regulateavailability by configuring the importance value of individual server pools.Reference: https://docs.oracle.com/database/121/RACAD/admcon.htm#RACAD8890

QUESTION 7A node in a four-node cluster encounters corruption on the OLR and must be restored from backups takenusing clusterware utilities.

Identify the option that shows the correct OLR restore commands.

A. Option AB. Option BC. Option CD. Option DE. Option E

Correct Answer: BSection: (none)Explanation

Explanation/Reference:Explanation:

Run the following command to list the backup files:

ocrconfig -showbackup

The ocrconfig -showbackup command displays the backup location, timestamp, and the originating nodename of the backup files that Oracle Clusterware creates. By default, the - showbackup option displaysinformation for both automatic and manual backups but you can include the auto or manual flag to displayonly the automatic backup information or only the manual backup information, respectively.

Run the following command to inspect the contents and verify the integrity of the backup file:

ocrdump -backupfile backup_file_name

You can use any backup software to copy the automatically generated backup files at least once daily to adifferent device from where the primary OCR resides.

QUESTION 8You want to change an existing Oracle Clusterware standard Cluster to an Oracle Flex Cluster. There IsGrid Naming Service (GNS) and Flex ASM configured right now. In what order do you need to take thefollowing steps?1. Stop Oracle Clusterware.2. Determine the current mode of the cluster.3. Ensure that the GNS is configured with a fixed VIP.4. Change the mode of the cluster to be an Oracle Flex Cluster.5. Use the Oracle Automatic Storage Management Configuration Assistant (ASMCA) to enable Oracle FlexASM in the duster.6. Start Oracle Clusterware.

A. 1, 2, 3, 5, 4, 6B. 2, 3, 5, 4, 1, 6C. 1, 2, 3, 4, 5, 6D. 2, 3, 4, 5, 1, 6



QUESTION 9Which statement accurately describes the benefit of the policy-managed database feature with Oracle KAL12cR1?

A. It protects against cascade failures due to network usage. It migrates workload isolation to specificpools. Less important workloads shut down immediately.

B. It protects against cascade failures due to load. It ensures that workload isolation is balanced betweenpools. Less important workloads start transactionally.

C. It protects against cascade failures due to load. It ensures workload isolation between pools.Less important workloads shut down transactionally.

D. It protects against cascade failures due to load. It ensures workload isolation between pools.Less important workloads shut down and start uniformly.

E. It protects against cascade failures due to load. It ensures workloads are not isolated between pools.Less important workloads shut down transactionally.


Explanation/Reference:Explanation: Policy-Managed Databases with Oracle RAC 12c Improved HA Management New FailoverStrategy ! Servers "Move" to Replace Failed node raccdb1_4 raccdb1_2 raccdb1_2 Oracle RAC OracleRAC Oracle GI | HUB Ensures workload isolation between pools Less important workloads shutdowntransactionally Reference: http://www.slideshare.net/MarkusMichalewicz/oracle-rac-12c-best-

practiceswithappendicesdoag2013

QUESTION 10Which tasks and in which order must be performed, before you can change the mode of a standard clusterto Flex?

A. 1. The node role must be set for each node in the cluster.2. You must ensure that the GNS is configured with a fixed VIP.3. Flex ASM must be enabled for the cluster.4. Clusterware must be started on each node.

B. 1. Clusterware must be stopped on each node.2. You must set the Flex ASM cardinality.3. Flex ASM must be enabled for the cluster.4. Clusterware must be started on each node.

C. 1. You must ensure that the GNS is configured with a fixed VIP.2- Flex ASM must be enabled for the cluster.3. Clusterware must be stopped on each node.4. Clusterware must be started on each node.

D. 1. Clusterware must be stopped on each node.2. New Application VIPs must be created.3. You must ensure that the GNS is configured with a fixed VIP.4. Clusterware must be started on each node.



QUESTION 11If you upgrade to ASM 12cR1 and implement Flex ASM, do you need to upgrade all the databases to12cR1?

A. Yes. All the databases need to be upgraded to 12cR1.B. No. You can run in a mixed 11.2 database instance and a 12cR1 database instance. The 11.2 instance

will use the Flex ASM instance of the other server.C. No. You can run in a mixed 11.2 database instance and a 12cR1 database instance, but the 11.2

instance will fail if the local Flex ASM instance is moved to another server.D. No. You cannot upgrade your database instance to 12cR1.



QUESTION 12You are talking to the network admin team about the Interconnect network in Oracle RAC and Clusterware.

Which statement about the Private interconnect interface is incorrect?

A. Oracle RAC and Oracle ASM instances use the private interconnect for inter-instance communication.B. Oracle Clusterware uses the private interconnect to exchange Clusterware-related messages among its

nodes.C. It supports both IPv4 and IPv6.D. It supports redundant network interfaces for load balancing and high availability.

Correct Answer: DSection: (none)

Explanation


QUESTION 13What is the mandatory step for a media recovery of RAC 12cR1 database with encrypted tablespaces?

A. You must close the Oracle Wallet after database mount and before opening the database.B. You must open the Oracle Wallet after database no mount and before opening the database.C. You must relocate the sqlnet.ora file and remove it from $ORACLE_HOME/network/admin.D. You must open the Oracle Wallet after database mount and before opening database.



QUESTION 14Arrange the following steps for converting from DNS to GNS in the proper order:1. Start GNS.2. Configure GNS resource. Update database endpoint4. Remove static addresses so only dynamic addresses are used.5. Change the CRS resource to support mixed mode.6. Modify the registered SCAN.

A. 1, 2, 3, 4, 5, 6B. 6, 5, 4, 3, 2, 1C. 2, 1, 5, 6, 3, 4D. 4, 3, 6, 5, 1, 2



QUESTION 15Which statement about the AU_SIZE disk group attribute is incorrect?

A. It specifies the size of the allocation unit for a disk group.B. It can be changed at any time for any disk group.C. You can view the value of this attribute in the ALLOCATION_UNIT_SIZE column of the

V$ASM_DISKGROUP view.D. The default size is 1 MB.



QUESTION 16You have completed a rolling conversion from DNS to GNS cluster resolution from the database and clusterresources end. The remaining are the configuration changes to be done from the client side.

Which two items need to be taken into account to achieve a successful connection?

A. For each client using a SCAN, change the SCAN the client uses so that the client uses the SCAN in thedomain delegated to GNS.

B. For each client using VIP names, change the VIP name on each client so that they use the same serverVIP name, but with the domain name in the domain delegated to GNS.

C. There is no need to change anything in client configuration as the combination of TAF and ONS willautomatically take care of reaching the correct nodes.

D. All the nodes in the cluster need to be bounced one after the other in order for the changes to becompleted as it is not possible to do it online.

Correct Answer: ABSection: (none)Explanation

Explanation/Reference:Explanation: For each client using a SCAN, change the SCAN that the client uses so that the client usesthe SCAN in the domain delegated to GNS.

For each client using VIP names, change the VIP name on each client so that they use the same serverVIP name, but with the domain name in the domain delegated to GNS. Reference: https://docs.oracle.com/database/121/CWADD/admin.htm#CWADD92605

QUESTION 17You want to add host03 to a Flex cluster. In which order will you execute these commands?

A. 1, 2, 3, 4, 5, 6B. 1, 2, 5, 3, 6, 4C. 3, 5, 6, 2, 1, 4D. 3, 6, 5, 1, 2, 4E. 5, 6, 3, 1, 4, 2



QUESTION 18There is an instance for which the instance type is set to ASMPROXY. Which two statements are correct?

A. We know it can be shutdown when ACFS is not running.B. We know this duster is using Flex ASM.C. We know Oracle ASM Dynamic Volume Manager is not supported here.

D. We know this is an Oracle Restart configuration.E. We know this node must have a direct ASM client running.

Correct Answer: ACSection: (none)Explanation

Explanation/Reference:Reference: https://docs.oracle.com/database/121/OSTMG/asminst.htm#OSTMG95329

QUESTION 19To create a policy-managed database in RAC, which three properties have to be defined?


A. Minimum downtime before switchover occursB. Minimum number of nodesC. Maximum number of nodesD. Relative importance compared to other server poolsE. Relative uptime compared to other server pools

Correct Answer: BCDSection: (none)Explanation

Explanation/Reference:Explanation: minimum and maximum number of nodes and an importance. Reference: https://martincarstenbach.wordpress.com/2010/01/26/policy-managed-databases/

QUESTION 20Which code must you use to increase the cardinality of the ASM in the cluster?

A. Option AB. Option BC. Option CD. Option D


Explanation/Reference:Explanation:To list the current ASM configuration mode in the cluster, connect to the ASM instance using the asmcmdcommand line interface and execute the following command:

ASMCMD> showclustermodeYou either receive ASM Cluster: Flex mode enable or Normal output based on the current ASMconfiguration.

As explained previously, when Flex ASM is enabled, by default, three ASM instances are configured onthree individual nodes in the cluster. If you want to increase or decrease the count (cardinality) of total

number Flex ASM instances, use the following modify command:

$ ./srvctl modify asm count 4

The above command will modify the default Flex ASM instance cardinality count

$ ./srvctl config asm

$ ./srvctl status asm

The above command will fetch the current asm configuration setting values in the cluster

$ ./srvctl status asm details

The above command will display the list of nodes on which Oracle Flex ASM instance is active

Reference: http://www.toadworld.com/platforms/oracle/w/wiki/10847.oracle-flex-asm- essentials.aspx

QUESTION 21ASM has multiple redundancy levels. Identify three of them.

A. No mirrorB. RAID 5 mirror with a 1 parity diskC. RAID 1 + 0 mirrorD. RAID 1 + 1 triple mirrorE. RAID S

Correct Answer: ACDSection: (none)Explanation


QUESTION 22Which two components are required to set up a SCAN listener for your customer's 12cR1 RACenvironment?

A. 3 virtual IP addresses on the same subnetB. 3 private IP addresses on the same subnetC. 3 private IP addresses on different subnetsD. One single name that resolves to 3 IPv4 orIPvl2 addressesE. One single name that resolves to 3 IPv6 or IPv4 addresses



QUESTION 23Which statement about ACFS and ADVM under Flex ASM is incorrect?

A. An ADVM proxy instance is required for ADVM and ACFS to connect to flex ASM.B. An ADVM proxy instance must run on the same node as ADVM and ACFS.C. The ADVM proxy instance is configured on all Hub and Leaf nodes in a Flex cluster.D. The ADVM proxy instance has its ORACLE_SID set to +APX<node number>.E. Administrators can shut down the ADVM proxy if ACFS is not running on the node.



QUESTION 24You must complete three steps.

Which command is required for step 2?

A. crsctl replace +OCR_VOTEB. crsctl move votedisk +OCE_VOTEC. crsctl replace votedisk +OCR_VOTED. crsctl replace <source_location> +OCR_VOTE



QUESTION 25After creating a volume and file system for a new Oracle ASM Cluster File system, you must associate theASM volume name with a mount point. Which command creates this registration?

A. acfsutil -r /dev/asra/volurael-123 /mnt/acfs1B. acfsutil -r -a /dev/asm/volurael-123 -ro /mnt/acfs1C. acfsutil register -v /dev/asm/volurael-123 /mnt/acfs1D. acfsutil registry -a /dev/asra/volumel-123 /mnt/acfsl


Explanation/Reference:Explanation:The Oracle ACFS mount registry is supported for Oracle Restart configurations, but cannot automaticallymount Oracle ACFS registered file systems. However, all Oracle ACFS file systems listed in the OracleACFS Mount Registry can be mounted with a single mount command. (The ACFS mount registry issupported for cluster configurations and automatically mounts ACFS volumes to the cluster wide mountpoints)

Register the ACFS volume1 with he ACFS mount registry to enable the automount workaround with thefollowing command. Note Change the volume name extension to match the previous commands.

acfsutil registry -a /dev/asm/volume1-<###> /u01/app/oracle/acfsdata/orabin

QUESTION 26Which two statements about the Grid Infrastructure Management Repository are correct?

A. It is a single instance database that is managed by Oracle Clusterware.B. It is where the Cluster Health Monitor places data.C. It is created during a "Typical" installation.D. It is stored in the ASM disk group that is used as a Fast Recovery Area.

Correct Answer: BCSection: (none)Explanation

Explanation/Reference:Reference:https://blogs.oracle.com/UPGRADE/entry/grid_infrastructure_management_repository_gimr

QUESTION 27According to the OEM Log Checker, the OCR has failed and must be restored. Which option accuratelydescribes how to fix the problem?

A. Option AB. Option BC. Option CD. Option DE. Option E


Explanation/Reference:Reference: http://docs.oracle.com/cd/E11882_01/rac.112/e41959/ocrsyntax.htm#CWADD92068

QUESTION 28Identify three stages of recovery of Oracle RAC Database 12cR1, which can be done in parallel withRMAN's RESTORE and RECOVER commands.

A. Applying archived redo logsB. Applying redo log filesC. Applying incremental backupsD. Restoring data filesE. Restoring SPFILE


Explanation/Reference:Explanation:Parallel Recovery with RMAN

With RMAN's RESTORE and RECOVER commands, Oracle automatically makes parallel the followingthree stages of recovery:

Restoring Datafiles When restoring datafiles, the number of channels you allocate in the RMAN recoverscript effectively sets the parallelism that RMAN uses. For example, if you allocate five channels, you canhave up to five parallel streams restoring datafiles.

Applying Incremental Backups Similarly, when you are applying incremental backups, the number ofchannels you allocate determines the potential parallelism.

Applying Archived Redo Logs With RMAN, the application of archived redo logs is performed in parallel.Oracle automatically selects the optimum degree of parallelism based on available CPU resources.Reference: http://docs.oracle.com/cd/B19306_01/rac.102/b14197/backup.htm#RACAD890

QUESTION 29What is the maximum number of ASM disk groups in one ASM installation?

A. 10B. 63C. 64D. 511E. 512F. Unlimited


Explanation/Reference:Explanation:ASM instances are smaller than database instances. A 64 MB SGA should be sufficient for all but thelargest ASM installations.Reference: http://docs.oracle.com/cd/B19306_01/server.102/b14231/storeman.htm

QUESTION 30You are doing a RAC implementation for a customer. Your customer states that they have the hardware toinstall additional network adapters on each RAC node. Identify three reasons for which they might needadditional adapters.

A. Each server has at least two network adapters.B. Each server was accidentally ordered with only one network adapter.C. Each server is using network-attached storage on one or two of their adapters.D. They want to use the Redundant Interconnect Usage feature.E. Each server has two network adapters and RAC requires at least three.



QUESTION 31In a clustered Oracle ASM environment, a diskgroup is mounted in restricted mode. Which statement iscorrect?

A. You can mount the disk group on all the nodes.B. You can issue any command, as long as you are using the force option.C. You can open the database located on this disk group only in standalone mode.D. You can open the database on this disk group only in restricted mode.E. You know that nobody is using the disk group, so you can perform a fast rebalancing on the disk group.



QUESTION 32You are given the task of managing an Oracle RAC 12cR1 Cluster by using Oracle Flex ASM.Which two statements are valid?

A. A failure of an ASM instance affects the databases, even if you are using ASM disk groups.B. A failure of an ASM instance affects availability for the databases using ASM disk groups due to

decreased cardinality of available ASM instances.C. To determine whether Oracle Flex ASM is enabled, use asm cmd show cluster mode.D. When deployed, Oracle Flex ASM enables an Oracle ASM instance to run on a separate physical server

from the database server

Correct Answer: ADSection: (none)Explanation


QUESTION 33Under which condition can Oracle Automated Storage Management (ASM) be considered to be acomponent of the Oracle Clusterware technology stack?

A. Oracle Cluster Registry (OCR) is stored on Oracle ASM.B. Oracle Local Registry (OLR) is stored on a clustered file system (OCFS/ACFS/DBFS).C. Both Oracle Cluster Registry and Oracle Local Registry are stored on Oracle ASM.D. Oracle ASM can never be considered a component of Oracle Clusterware.E. Oracle ASM can be considered a component of Oracle Clusterware technology stack only when

deployed on engineered systems such as Exadata or Oracle Database Appliance.


Explanation/Reference:Explanation:Oracle ASM can be considered part of the Oracle Clusterware technology stack when OCR is stored onOracle ASM. The listeners and management database are Oracle Clusterware resources and are notproperly part of the Oracle Clusterware technology stack. Reference: https://docs.oracle.com/database/121/CWADD/intro.htm#CWADD90956

QUESTION 34Which statement about Oracle Flex ASM is incorrect?

A. Oracle Flex ASM enables an Oracle ASM instance to run on a separate physical server from thedatabase servers,


B. With Flex ASM, a smaller pool of ASM instances can be used to serve a large pool of database servers.C. Flex ASM requires the configuration of Flex Clusters.D. Flex ASM can be configured on either a standard cluster or a Flex Cluster.E. Higher availability can be achieved with Flex ASM because if an ASM instance fails, its clients can

reconnect to another ASM instance.


Explanation/Reference:Explanation:Oracle Flex ASM enables Oracle ASM instances to run on a separate physical server from the databaseservers,Reference: https://docs.oracle.com/database/121/OSTMG/asminst.htm#OSTMG95329

QUESTION 35Identify the correct command to create the salesrepservice for the PDB salespdbin the RAC 12cR1 CDBwith DB_UNIQUE_NAME mycdb.

A. srvctl add service dbmycdb service salesrep pdb create salespdbB. srvctl add service dbmycdb service salesrep pdbservicesalespdbC. srvctl add service dbmycdb service salesrep pdbsalespdbD. srvctl add service dbmycdb service salesrep pdb service salespdb


Explanation/Reference:Explanation: This example adds the salesrep service for the PDB salespdb in the CDB withDB_UNIQUE_NAME mycdb:

srvctl add service -db mycdb -service salesrep -pdb salespdb

Reference: http://docs.oracle.com/database/121/ADMIN/cdb_pdb_admin.htm#ADMIN13975

QUESTION 36What device path do you have to specify in ASM, if you want to use the multipath device?

/dev/sdc/ = first path/dev/sdd = second path/dev/multipatha = path of the multipath OS driver

A. Only /dev/sdc is enough, because asmlib knows it is a multipath device.B. /dev/sdc as disk group and /dev/sdd as failure group.C. You need to specify all the three devices and only then ASM will know this is a multipath device.D. Only /dev/multipatha is enough.


Explanation/Reference:Explanation: If multipathing is enabled, there will be a multipath disk, for example /dev/multipatha, that canaccess both paths. That is, any I/O to multipatha can use either path. If a system were using the sdb path,and that cable is unplugged, the system will get an error. But the multipath disk will know to switch to thesdc path. Reference: http://www.oracle.com/technetwork/topics/linux/asmlib/multipath-097959.html

QUESTION 37Which statement about the server Flex ASM is incorrect?

A. Flex ASM requires an ASM instance on each cluster node running an Oracle Database instance.B. Flex ASM allows ASM clients to remotely connect to ASM over a network.C. with Flex ASM, a small pool of ASM instances can be used to serve a larger pool of database servers.D. When an ASM instance fails, the database clients and ASM cluster file systems can reconnect another

ASM instance.



QUESTION 38On a new Oracle Grid Infrastructure 12cR1 system, you notice that Oracle Flex ASM has been configured.Which two reasons are valid for configuring Grid Infrastructure in this manner?

A. Increased high availability of database instancesB. Simple grid infrastructure configuration and easier maintenanceC. Increased spare memory on reserved nodes.D. Better performance for the underlying storage hardware



QUESTION 39Which three statements best describe how Oracle ACFS takes advantage of Oracle ASM?

A. File systems can be dynamically resized.B. Performance can be maximized through direct access to Oracle ASM disk groups.C. Oracle ACFS maximizes availability through a dedicated path on the Cluster Interconnect.D. Data reliability in Oracle ACFS is enhanced by Oracle ASM mirroring.E. All file systems are mirrored across Oracle ASM Disk Groups to increase reliability.

Correct Answer: ABDSection: (none)Explanation


QUESTION 40Which three statements accurately describe the components of the Cluster Ready Services TechnologyStack?

A. Cluster Ready Services (CRS): A specialized oraagent process that helps CRSD manage resourcesowned by root, such as the network, and the Grid virtual IP address.

B. Cluster Synchronization Services (CSS): Manages the cluster configuration by controlling which nodesare members of the cluster and by notifying members when a node joins or leaves the cluster.

C. Cluster Time Synchronization Service (CTSS): A background process that publishes events that OracleClusterware creates.

D. Event Management (EVM): Provides time management in a cluster for Oracle Clusterware.E. Grid Naming Service (GNS): Handles requests sent by external DNS servers, performing name

resolution for names defined by the cluster.

F. Oracle Agent (oraagent): This process was known as RACG in Oracle Clusterware 11gR1 (11.1).

Correct Answer: BEFSection: (none)Explanation


The following list describes the processes that comprise CRS:

Cluster Ready Services (CRS): The primary program for managing high availability operations in a cluster.

The CRSD manages cluster resources based on the configuration information that is stored in OCR foreach resource. This includes start, stop, monitor, and failover operations. The CRSD process generatesevents when the status of a resource changes. When you have Oracle RAC installed, the CRSD processmonitors the Oracle database instance, listener, and so on, and automatically restarts these componentswhen a failure occurs.

Cluster Synchronization Services (CSS): Manages the cluster configuration by controlling which nodes aremembers of the cluster and by notifying members when a node joins or leaves the cluster. If you are usingcertified third-party clusterware, then CSS processes interface with your clusterware to manage nodemembership information.

The cssdagent process monitors the cluster and provides I/O fencing. This service formerly was providedby Oracle Process Monitor Daemon (oprocd), also known as OraFenceService on Windows. A cssdagentfailure may result in Oracle Clusterware restarting the node.

Oracle ASM: Provides disk management for Oracle Clusterware and Oracle Database.

Cluster Time Synchronization Service (CTSS): Provides time management in a cluster for OracleClusterware.

Event Management (EVM): A background process that publishes events that Oracle Clusterware creates.

Grid Naming Service (GNS): Handles requests sent by external DNS servers, performing name resolutionfor names defined by the cluster.

Oracle Agent (oraagent): Extends clusterware to support Oracle-specific requirements and complexresources. This process runs server callout scripts when FAN events occur. This process was known asRACG in Oracle Clusterware 11g release 1 (11.1).

Oracle Notification Service (ONS): A publish and subscribe service for communicating Fast ApplicationNotification (FAN) events.

Oracle Root Agent(orarootagent): A specialized oraagent process that helps the CRSD manage resourcesowned by root, such as the network, and the Grid virtual IP address.

Reference: https://docs.oracle.com/database/121/CWADD/intro.htm#CWADD90956

QUESTION 41Which statement about the setup of Flex ASM is incorrect?

A. You can choose the Oracle ASM deployment model during the installation of Oracle Grid Infrastructure.B. When setting up Flex ASM, you must configure a private network and a separate ASM network.C. You can use Oracle ASM Configuration Assistant (ASMCA) to enable Oracle Flex ASM after the

installation or upgrade is performed.D. Oracle ASM deployment mode configuration is not available for Oracle Restart.E. When setting up Flex ASM, the ASM network is configured, which is used for communication between

ASM and ASM clients.

Correct Answer: BSection: (none)

Explanation


QUESTION 42The customer is still not convinced about the advantages of using node VIPs. Which is the most importantpoint that will convince him about why VIPs are used in Oracle RAC 12cR1 environments?

A. It is very convenient as whenever a node/interface/network related to the node VIP falls, the VIP can failto another node and the failed over VIP can start accepting connections from the new node avoidingconnection failures.

B. This is needed as whenever a node/interface/network related to the node VIP fails, clients that attemptto connect to the VIP address receive a rapid connection-refused error Instead of waiting for TCPconnect timeout messages. This helps for a quicker failure detection and resolution.

C. It is needed as whenever the node/interface/network related to the VIP fails, nothing happens and nodeVIP never fails to any other node and stays stable.

D. Configuring VIP is optional and not needed in an Oracle RAC 12cR1 configuration.



QUESTION 43The Free server pool contains servers that are not assigned to any other server pools. Which two attributesof the free server pool can be edited by the user?

A. SERVER_NAMESB. MIN_SIZEC. MAX_ZIZED. IMPORTANCEE. ACL

Correct Answer: DESection: (none)Explanation


The Free server pool contains servers that are not assigned to any other server pools. The attributes of theFree server pool are restricted, as follows:SERVER_NAMES, MIN_SIZE, and MAX_SIZE cannot be edited by the user IMPORTANCE and ACL canbe edited by the user

Reference: http://docs.oracle.com/cd/E11882_01/rac.112/e41959/admin.htm#CWADD838

QUESTION 44The exhibit describes an Oracle Clusterware startup.

Which item is missing?

A. ohasedB. ocssdC. crsdD. octssdE. osysmondF. orragent



The INIT process starts ohasd, which, in turn, starts the oraagent, orarootagent, and cssdagent. Theseprocesses then carry out the following steps:The oraagent starts mdnsd, evmd, Oracle ASM, gpnpd, and gipcd (Grid IPC daemon).

The orarootagent starts OSYSMOND (which, on some nodes, starts OLOGGERD, not shown in thegraphic), ctssd, the CSSD Monitor, diskmon (Disk Monitor daemon), and crsd. Thecrsd, in turn, startsanother oraagent and another orarootagent.

The oraagent starts Oracle Notification Service (ONS and eONS), an Oracle ASM instance (whichcommunicates with Oracle ASM started by the oraagent that ohasd started), the database instance, thelisteners, and the SCAN listeners

The orarootagent starts gnsd, the VIPs, the SCAN VIP, and the network resources.

The cssdagent starts Cluster Synchronization Service (ocssd).

QUESTION 45Consider the server pools configured in the following scenario. There are no servers in the cluster, and allserver pools are empty.

When server1 joins the cluster, it will be assigned to ____________.

A. sp1B. sp2C. sp2 and sp2_1D. sp2 and sp2_2E. sp2, ap2_1, and sp2_2F. sp3


Explanation/Reference:Reference: https://docs.oracle.com/database/121/CWADD/pbmgmt.htm#CWADD91116

QUESTION 46When creating a server pool using the SRVCTL utility, which server pool attributes are available?

A. CATEGORY, MIN, MAX, ACL, EXECUITIVE_POOLS, ACTIVE_SERVERSB. CATEGORY, IMPORTANCE, MIN, MAX, SERVERPOOL, SERVERSC. CATEGORY, MIN, MAX, ACL, EXCLUSIVE,_POOLS, ACTIVE_SERVERSD. IMPORTANCE, MIN, MAX, MIN_SIZE, NAMEE. MIN_SIZE, MAX_SIZE, NAME, IMPORTANCE, SERVERS_CATEGORYF. SERVER_CATEGORY, SERVERS, SERVERPOOL, MIN, MAX, NAME



Server Pool Attributes

You can use SRVCTL or CRSCTL to create server pools for databases and other applications, respectively.If you use SRVCTL to create a server pool, then you can only use a subset of the server pool attributesdescribed in this section. If you use CRSCTL to create server pools, then you can use the entire set ofserver pool attributes.

Server pool attributes are the attributes that you define to create and manage server pools.

The decision about which utility to use is based upon the type of resource being hosted in the server pool.You must use SRVCTL to create server pools that host Oracle databases. You must use CRSCTL tocreate server pools that host non-database resources such as middle tiers and applications.

When you use SRVCTL to create a server pool, the server pool attributes available to you are:

-category-importance-min-max-serverpool-servers

Reference: https://docs.oracle.com/database/121/CWADD/pbmgmt.htm#CWADD92637

QUESTION 47A customer is using the policy-managed database by name RACDB on a 4-node cluster. The server namesin the Cluster are: dasher, vixen, comet, and dancer.

There are two server pools defined, frontoffice and backoffice. The attributes are as follows:ServerpoolImportance MinMaxFrontoffice1022BackOffice512

There are two uniform services being created, crmsrv and hrsrv. crmsrv is being assigned toserverpoolfrontoffice and hrsrv is assigned to backoffice.

Currently, all four nodes are up and running. The database and its services are running as follows:The serverpoolfronoffice, which is running the crmsrv service is being run on the dasher and vixen hosts.

The serverpoolbackoffice, which is running hrsvc service is being run on comet and dancer hosts.

What happens when the dasher node fails?

A. Nothing happens because any service relocation is a major interruption to the clients who areconnecting to the services.

B. One of the nodes is moved from the backofficeserverpool to the fronofficeserverpool. This is movedwith the consideration of importance and minimum attributes configured. Effectively, the crmsrv servicewill run in two nodes and hrsvc will run in one node.

C. Rebootlescrs cluster stack will be tried in all the cluster nodes to resolve the issue. If this is not resolved,all nodes in the cluster get bounced to resolve the issues.

D. Because the crmsrv service is defined as uniform service the cluster ensures at least one node is upand running, which is the current case. So, there will be no service relocation that will happen.



QUESTION 48Which two components are included in Oracle CloudFS?

A. ASM Cluster File SystemB. Oracle DatabaseC. Oracle ASM Dynamic Volume ManagerD. Oracle Clusterware

Correct Answer: BD

Section: (none)Explanation

Explanation/Reference:Explanation:Oracle Grid Infrastructure, including Oracle ASM / CloudFS and Oracle Clusterware, and the OracleDatabase with the Oracle Real Application Clusters option constitutes the Oracle RAC Stack.

QUESTION 49Which statement about the management of Oracle ADVM volumes by using ASMCA is incorrect?

A. Using ASMCA allows you to create and configure an Oracle ADVM volume.B. You can use ASMCA to enable or disable ADVM volumes.C. When creating an Oracle ADVM volume for an ACFS file system that will store database files, you must

create the volume using ASMCA to ensure correct column striping.D. You can use ASMCA to resize volumes that have not been mounted on an Oracle ACFS file system.E. You can use ASMCA to delete Oracle ADVM volumes.



Oracle ASM Configuration Assistant enables you to create or configure an Oracle ADVM volume.

Right click a selected volume in the Oracle ASM Configuration Assistant screen to display the configurationoptions menu. The menu options include:

Enable a disabled volumeDisable an enabled volume

Resize a volume that has not been mounted on an Oracle ACFS file system

Delete a volume

There are options for creating a volume, enabling all volumes, and disabling all volumes. Reference: http://docs.oracle.com/cd/E11882_01/server.112/e18951/asmca.htm#OSTMG58000

QUESTION 50Which three options can be used for storing database files in an Oracle Real Application Clustersdatabase?

A. Shared disk partitions as raw devicesB. Shared disks managed by Oracle Automatic Storage Manager (ASM)C. Local file systemD. Shared disk partitions as block devicesE. Network file system (NFS) on a certified network-attached storage (NAS) filerF. Oracle Automatic Storage Management Cluster File System (ACFS)

Correct Answer: ABFSection: (none)Explanation


QUESTION 51You are managing a four node Oracle RAC environment. During a maintenance window it is required toshut down and restart RAC instances 2 and 4.

Which option shows the required commands to accomplish this task?

A. Option AB. Option BC. Option CD. Option D



QUESTION 52Which three statements about Oracle RAC background processes are correct?

A. ACMS (Atomic Controlfile to Memory Service) is an agent that contributes to ensuring that a distributedSGA memory update is either globally committed on success or globally aborted if a failure occurs.

B. GTXO-j (Global Transaction Process) controls the flow of messages to remote instances, managesglobal data block access, and transmits block images between the buffer caches of different instances.

C. LMON (Global Enqueue Service Monitor) monitors global enqueues and resources across the clusterand performs global enqueue recovery operations.

D. LMD (Global Enqueue Service Daemon) manages incoming remote resource requests within eachinstance.

E. LMS (Global Cache Service Process) manages non-Cache Fusion resource requests such as libraryand row cache requests.

F. LCK0 (Instance Enqueue Process) manages background slave process creation and communication onremote instances.


Explanation/Reference:Reference: https://docs.oracle.com/cd/E24693_01/rac.11203/e16795/admcon.htm (About Oracle RACbackground processes)

QUESTION 53Identify the root cause of Enqueue: CF Contention in this scenario.

A. Root cause is a stalled LGWR due to LGWR waits Enqueue: CF contention is caused by the db filesequential reads.

B. Root cause is blocked LGWR due to LGWR waits LGWR waits ENQUEUE: CF contention is ssymptom of the db file scattered reads and excessive ITL waits.

C. Root cause is a blocked LGWR due to LGWR waits for enqueue: CF contention, which may be held byanother background process. Background process may hold a CF enqueue while updating the controlfile.

D. Root cause is blocked LGWR due to SCAN_LISTENERS(s) dropping client connections during DoSevent.



QUESTION 54The DISK_REPAIR_TIME attribute has expired after a transient disk error. What happens next?

A. Nothing, it was only a warning. All the disks are OK.B. This means that the disk is repaired and is put back In the ASM disk group.C. Oracle ASM drops the disk.D. This means that Oracle will use ASM Fast Mirror Resync to sync the rest of the disks.


Explanation/Reference:Explanation:The DISK_REPAIR_TIME disk group attribute specifies how long a disk remains offline before ASM dropsthe disk. If a disk is made available before the DISK_REPAIR_TIME parameter has expired, the storageadministrator can issue the ONLINE DISK command and ASM resynchronizes the stale data from themirror side. In Oracle Database 11g, the online disk operation does not restart if there is a failure of theinstance on which the disk is running. You must reissue the command manually to bring the disk online.

Set the DISK_REPAIR_TIME disk group attribute to the maximum amount of time before a disk is definitelyconsidered to be out of service.

QUESTION 55You have recently completed building an 8-node 12cR1 RAC cluster, and you are now seeing a lot ofinstability, congestion, and network packet losses in the network.

Which two items related to the private interconnect could have caused these issues?

A. IP addresses allocated to the private interconnect have been specified in /etc/hosts.B. The connections between the duster nodes for both public and private interfaces are using the same

switch.C. All the private interfaces used for the interconnects are being configured in separate subnets.D. You have used crossover cables for the cluster interconnect.

Correct Answer: BDSection: (none)Explanation


QUESTION 56Identify the incorrect statement about server pools.

A. Server pools divide a cluster into logical groups of servers in which the application can be a database ornondatabase.

B. An application is considered a singleton when it runs on a single server in a pool.C. The database administrator must use the CRSCTL utility to create and manage clusters that contain

Oracle RAC databases.D. Oracle Default Server Pools are defined as FREE and GENERIC Server Pools.E. Database administrators can create and manage server pools that will contain Oracle RAC databases

by using the SRVCTL utility.



QUESTION 57You are preparing two Oracle Linux nodes, node1 and node2, for the installation of Oracle GridInfrastructure, you plan to use the existing Linux users "grid" as Grid Infrastructure software.

What task must be performed before installing the Grid Infrastructure?

A. Change the user "grid" initial login group to "dba".

B. No task must be performed.C. Change the user ID of the grid user in node1, node2, or both nodes to guarantee that the user IDs are

equal.D. Add "users" to supplementary groups of "grid" in node1. Or, alternatively remove "users" from

supplementary groups of node2 "grid."E. Use another Linux user as "grid" might be used for other purposes.



QUESTION 58In advanced Grid Infrastructure Installation, you can optionally configure Grid Naming Service (GNS). Inwhich two cases must you configure the GNS?

A. You conjured a dedicated network for Automatic Storage Management (ASM)B. You deeded to configure a Flex Cluster.C. You decided to configure a Standard Cluster.D. You decided to use IPv6 addresses in client connections.E. You use Dynamic Host Configuration Protocol (DHCP) to assign IP addresses to duster nodes.

Correct Answer: CESection: (none)Explanation


QUESTION 59You are installing Oracle Grid Infrastructure with Oracle Universal Installer (OUI). Your goal is a cluster thatcontains both database nodes and application nodes. The database's) are intended to be under OracleQuality of Services (QoS) management. Which three OUI choices are required to achieve the desiredinfrastructure?

A. Choice "Configure a Standard cluster" in the Cluster Type selection stepB. Choice "Yes" in the Grid Infrastructure Management Repository Option stepC. Choice "Configure a Flex cluster" in the Cluster Type selection stepD. Choice "Use Standard ASM for storage" in the Storage Option stepE. Choice "Use Oracle Flex ASM for storage" in the Storage Option stepF. Choice "Configure GNS" in the Grid Plug and Play step

Correct Answer: CDFSection: (none)Explanation


QUESTION 60Different versions of Oracle Clusterware, Oracle ASM, and Oracle Database can be installed in a cluster.Which three items correctly describe the guidelines, which govern Oracle Clusterware compatibility?

A. Oracle ASM 12cR1 requires Oracle Clusterware l2cRl and can support Oracle Database 12cR1, OracleDatabase 11g R2 and R1, and Oracle Database 10g R2 and R1.

B. Oracle Clusterware 12cR1 can support Oracle Database 12cR1, Oracle Database 11g R2 and R1, andOracle Database lug R2 and R1.

C. Oracle Clusterware 12tRl can support Oracle Database 12cR1, Oracle Database 11g R2 and R1.D. Oracle Database 10g R2 and R1, and Oracle Database 9/ R3.E. Oracle Clusterware12cR1 supports Oracle ASM 12cR1 only.F. Oracle Database 12cR1 requires Oracle Clusterware 11g R2 and above.

Correct Answer: BCDSection: (none)Explanation


QUESTION 61During the installation of Oracle Grid Infrastructure 12cR1, you decide to configure the Grid InfrastructureManagement Repository. Where will the repository be stored?

A. In its own single instance Oracle Database 12cR1 database and managed as a failover databaseB. In the first RAC database created on the clusterC. In its own RAC 12cR1 database with load balancing enabledD. On a node outside the duster to guard against cluster failureE. Within the Grid Infrastructure home as a file-based repository




Oracle Real Application Clusters 12c Essentials Version 14.0

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