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Oracle Database 12c: RAC and Grid Infrastructure Administration

Question No: 11

Which three statements are true about Quality of Service Management (QoS)?

  1. A server-pool can be managed by QoS even if it does have database instances running on nay server inthe pool.

  2. It can manage database services only if they are defined as UNIFORM services.

  3. It requires Oracle Grid Infrastructure for a Cluster to be installed and Clusterware to be running.

  4. It supports multiple databases assigned to the same server pool.

  5. Databases managed by QoS can be administrator managed or policy managed.

Answer: C,D,E

Question No: 12

You administer a three-instance, policy-managed, multitenant RAC database CDB1 with two PDBs: PDB_1 and PDB_2.

Examine these commands executed on host01:

$ srvctl add service -db CDB1 -pdb PDB_1 -serverpool prod_pool -cardinality singleton

$ srvctl start service -db CDB1 -service CRM $ srvctl stop service -db CDB1 -service CRM

Which three statements are true?

  1. CRM is only available for new logins on the CDB1 instance on host01.

  2. CRM is available for new logins on one CDB1 isntance.

  3. The srvctl start service command automatically opens PDB_1 if not already opened.

  4. The srvctl stop service command does not close PDB_1 on any instance of CDB1.

  5. The CRM service is not available for new logins on any instance of CDB1.

Answer: B,D,E

Question No: 13

Which two statements are true concerning ASM diskgroups using disks with a 4k sector size?

  1. Their COMPATIBLE.ASM attributes must be set to 12.1 or higher.

  2. Their COMPATIBLE.ASM attributes must be set to 11.2 or higher.

  3. Performance of ACFS is improved by using these diskgroups.

  4. Their COMPATIBLE.RDBMS attributes must beset to 11.2 or higher.

  5. Their sector size attributes can be changed using the ALTER DISKGROUP command.

Answer: B,D

Question No: 14

Which two utilities can be used to predict the consequences of a filesystem failure for the Oracle 12c Clusterware stack?

  1. asmcmd

  2. srvctl predict….

  3. crsctl fail….

  4. asmca

  5. acfsutil

  6. advmutil

Answer: C,E

Question No: 15

Examine this query and output:

SQLgt; select order_flag, cache_size, session_flag, keep_value, 2 from user_sequences where sequence_name = ‘SEQ1’;

O CACHE_SIZE S K

– ——– – -Y 10 N N

Performance analysis revealed severe SQ enqueue contention on the SEQ1 sequence. The SEQ1 sequence is incremented from all instances equally and is frequently used. Which two statements should you execute to reduce SQ enqueue contention?

  1. alter sequence seq1 cache 10000;

  2. alter sequence seq1 order;

  3. alter sequence seq1 noorder;

  4. exec sys.dbms_shared_pool.keep (‘SEQ1’, ‘Q’)

  5. alter sequence seq1 keep;

Answer: A,D

Question No: 16

Which four statements are true concerning the upgrading of Oracle Grid Infrastructure 12c?

  1. The ORACLE_HOME environment variable must be set to the Grid Infrastructure home directory in theinstallation owner’s environment.

  2. The upgrade must be done in-place.

  3. The upgrade must be done out of place.

  4. Upgrade validation may be done using the Oracle Universal Installer which in turn invokes the built-incluster verification utility.

  5. The cluster verification utility cluvfy.sh can verify that the cluster is ready for an upgrade.

  6. The ORACLE_SID environment variable must be set to the SID of the ASM instance in the installationowner’s environment.

  7. The cluster verification utility cluvfy.sh can generate fixup scripts to run on all nodes of the cluster.

Answer: A,B,F,G

Question No: 17

Which two statements are true about ASM default templates?

  1. Default data file templates are only created by ASM when a normal redundancy disk group is created.

  2. Default template settings for redundancy depends on the disk group redundancy.

  3. Default templates for a disk group can be modified.

  4. Default template setting for striping depends on disk group redundancy.

  5. Templates may be shared across disk groups.

Answer: A,B Explanation:

Default template settings depend on the disk group type. The default template for data files for a normal redundancy.

Reference:

http://docs.oracle.com/cd/E11882_01/server.112/e18951/asmfiles.htm#OSTMG139

Question No: 18

Examine this output:

ASMCMDgt; volinfo – G ACFS -a Diskgroup Name: ACFS

Volume Name: VOL1

Volume Device: /dev/asm/vol1-280 State: ENABLED

Size (MB): 2048

Resize Unit (MB): 32 Redundancy: MIRROR Stripe Columns: 4 Stripe Width (K): 128 Usage: ACFS

Mountpath: /u01/app/grid/acfsmount

The ACFS disk group has 10 GB free space and the file system is currently mounted.

You execute this command to increase the volume size: ASMCMD gt;volresize -G ACFS -s 3G VOL1

Which statement is true regarding the outcome?

  1. It succeeds

  2. It fails because the file system must be unmounted before resizing.

  3. It fails because resizing a volume containing an ACFS file system must be performed using ACFSUTIL.

  4. It succeeds but the file system is automatically unmounted.

  5. It fails because the -f option is not specified.

Answer: C

Question No: 19

Which two steps must always be performed to delete node host04 from an Oracle 12c Clusterware cluster that does not use Grid Naming Service (GNS)?

  1. Run the crsctl unpin css – host04 command as root on host01, or on either host02 or host03.

  2. Run the rootcrs.pl – delete -force command as root on host01, or on either host02 or host03.

  3. Run the rootcrs.pl – delete -force command as root on host04.

  4. Run the crsctl delete node n – host04 command as root on host04. E. Run the crsctl delete node n – host04 command as root on host04.

  5. Run the crsctl delete node n – host04 command as root on host01, or on either host02 or host03.

Answer: B,C

Question No: 20

Which three statements are true about ASM Cloud File System (ACFS) tagging?

  1. asfssettag is a command provided by a platform-independent API to tag files.

  2. asfssettag is a command provided by a platform-dependent API to tag files.

  3. ACFS tagging is used to mark a subset of files in an ACFS file system for replication.

  4. acfsutil encr on can be used to specify the tag names of the files to be encrypted.

  5. acfsutil tag set can be used to tag files.

Answer: C,D,E

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