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Oracle Database 12c: RAC and Grid Infrastructure Administration

Question No: 21

Which two statements are true regarding the configuration of ASM disk groups when installing Oracle Grid Infrastructure 12c?

  1. The installer permits the creation of a disk group for use by the voting disks and OCR file.

  2. If no ASM disk groups are specified during installation, then ASM instances are not started after theinstallation completes on any cluster node.

  3. The installer permits the creation of a disk group to be used for the Recovery Area for the ASM instance.

  4. If ASM disk groups are configured for the Clusterware files, then ASM must be used for all databases onthe cluster.

  5. ASM disk groups used for voting files and OCR files require a quorum failgroup.

Answer: A,B

Question No: 22

Which two statements are true regarding ASM Dynamic Volume manager (ADVM)?

  1. To create an ADVM volume, disk group attributes COMAPTIBLE.ASM and COMPATIBLE.ADVM must beminimally set to 12.1.

  2. An ADVM volume is individually named and can contain only one file system.

  3. Only one ADVM volume can be created in an ASM disk group.

  4. ADVM extends ASM by providing a device driver interface to storage backed by an ASM disk group.

  5. File systems contained in ADVM volumes may only contain database files.

Answer: B,D Explanation:

Each volume is individually named and may be configured for a single file system. Reference: https://docs.oracle.com/database/121/OSTMG/GUID-B7A61F3B-C22A-4021- A846F5EA749E79FF.htm#OSTMG32000 (See Note and the third para from the top.)

Question No: 23

Which two statements are true regarding server-side connect-time load balancing for a RAC database when using SCAN listeners?

  1. It is based on performance metrics provided by the database instances LREG processes.

  2. LOCAL_LISTENER must be configured to point to the SCAN to enable server-side load balancing.

  3. The service’s connection load balancing goal must be manually configured to enable server-side connect-time load balancing.

  4. It’s enabled only when LOAD_BALANCE=YES is included in the TNS entry used by the client.

  5. Server-side load balancing requires the REMOTE_LISTENER to point to the SCAN.

Answer: C,E

Question No: 24

Which three are benefits of using RAC One Node in Oracle 12c?

  1. automatic failover for high availability

  2. ability to perform rolling patches

  3. online conversion from RAC One Node databases to multi-instance RAC databases

  4. load-balancing of services within a single instance

  5. online-conversion from non-RAC databases to RAC One Node databases

  6. multiple instances of the same database on a single node to protect against instance failure

Answer: B,D,F

Question No: 25

Which three statements are true about Oracle 12 RAC Database software installations?

  1. It is possible to install RAC database software on a one node cluster.

  2. It is possible to install multiple RAC database 12c software homes on the same cluster.

  3. The RAC database 12c software home and Grid infrastructure homes must be owned by separate OSusers.

  4. The Cluster Verification Utility (CLUVFY) must be used to check the cluster before installing the RACdatabase software.

  5. The Cluster Verification Utility (CLUVFY) must be used to check the cluster after installing the RACdatabase software.

  6. The RAC database 12c software home and Grid Infrastructure homes must be owned by the same OSuser.

Answer: C,D,F

Question No: 26

Which two statements are true about database service administration in a RAC environment?

  1. When services are created with srvctl, tnsnames.ora is automatically updated.

  2. When services are created with srvctl, the service is not started automatically.

  3. Service attributes can be modified, unless an instance hosting the service is in restricted mode.

  4. When the DBMS_SERVICE package is used to modify a service, the CRS resource is automaticallysynchronized with the changes.

  5. When the DBMS_SERVICE package is used to delete a service, it is automatically removed from the OCR.

  6. When services are started with srvctl, they are automatically added to the data dictionary of the hostingdatabase if not already defined.

Answer: A,E

Question No: 27

You plan to create a three-instance RAC database stored in ASM, with its data files in the DATA disk group. Identify three supported storage solutions for the Fast Recovery Area (FRA).

  1. a shared nothing file system accessed directly by the database instances

  2. a cluster file system

  3. a shared NFS file system

  4. the DATA disk group

  5. a local file system with the same path name on each cluster node

Answer: B,D,E

Question No: 28

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

  1. A copy of an encrypted file is not encrypted unless it is created in an encrypted directory.

  2. acfsutil encr init is used to establish role separation between encryption managers and encryption auditors.

  3. acfsutil encr off can be run by an encryption manager who may not have system

    administrator privileges.

  4. acfsutil encr on can be used to specify the encryption key length for a directory or file.

  5. An ACFS snapshot can be ACFS encrypted.

Answer: A,D,E

Question No: 29

Which four tasks are performed by DBCA when you convert a single-instance database to a four-instance RAC database?

  1. creating additional redo threads

  2. creating additional undo tablespaces

  3. creating shared ASM disk groups

  4. adding cluster resources

  5. creating database services

  6. adding additional initialization parameters

Answer: A,B,C,F

Question No: 30

Which three statements are true regarding multitenant architecture for RAC databases?

  1. One UNDO tablespace for each PDB is required.

  2. One UNDO tablespace for each instance is required.

  3. PDBs can have local temporary tablespaces.

  4. All the containers share the same SYSTEM and SYSAUX tablespaces.

  5. You can open one, several, or all PDBs on one, several, or all CDB instances.

Answer: B,C,D

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