Oracle RAC Set 1

1.

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

ACFS auditing information is replicated from the primary file system to the standby file system. One site of an ACFS replication configuration can be host both primary and standby file systems. Replication is automatically terminated if the primaries file system has less than 2GB free space. Standby redo log files are required on the standby site for synchronous redo transport.

2.

Examine this command to create a volume in the DATA disk group: SQL>ALTER DISKGROUP DATA ADD VOLUME vo11 SIZE 10g HIGH STRIPE_WIDTH 1M; STRIPE_COLUMNS 1; The DATA disk group has 50GB free space. Which two are prerequisites for successful execution of this command?

The DATA disk group must not be created with external redundancy. The DATA disk group must not contain any other volume. The DATA disk group must have at least three failure groups. The DATA disk group must have an AU size of 1MB.

3.

Which three statements are true regarding Flex ASM on a four-node cluster consisting of three-hub nodes and a leaf node?

An ASM instance and database instances can coexist on the same hub node. A database instance on a hub node can be a client of an ASM instance running on any leaf node. A database instance on a hub node can be a client of an ASM instance running on any hub node. ASM Cluster File System (ASFS) can only be deployed on hub nodes.

4.

Which two statements are true about Flex ASM in a Flex Cluster?

Oracle databases from releases older than 12c cannot use Flex ASM. ACFS may only be configured on a hub node running an ASM instance. Instances of ASM-based databases on hosts that have no ASM instance running, require Flex ASM. Flex ASM requires that I/Os requests be sent through an ASM Proxy Instance, regardless of database and ASM instance placement in a cluster.

5.

A directory +DATA/ORCL/DATAFILE/USERS exists in ASM. USERS is a user created directory; ORCL and DATAFILE are system generated directories. Which two statements are true about user-created directories?

You can create subdirectories under the USERS directory. You cannot rename a user-created subdirectory. You cannot drop a directory containing aliases unless you delete the aliases first. You cannot create a user-defined directory at the root (+) level.

6.

You just added an ASM disk to the DATA diskgroup. Which two can be used to monitor the rebalancing?

amscmd lsop v$asm_disk v$asm_operation v$asm_diskgroup

7.

Examine this command: SQl> CREATE DISKGROUP RECO HIGH REDUNDANCY: FAILGROUP fgrp1 DISK

File created in it have three copies for each allocation unit. Any database instance with the COMPATIBLE parameter 10.1 and higher can use it. Files created using a template with the redundancy attributes set to MIRROR will have three-way Mirroring. Files created using a template with the redundancy attribute set to HIGH will have three-way mirroring.

8.

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

Audit information gathered by each cluster node can be consolidated into the unified ACFS audit trail. acfsutil audit init must be run by a system administrator. acfsutil audit purge can be run by an audit manager. acfsutil audit read marks audit files to indicate that it is safe to purge them.

9.

Which three statements are true regarding ACFS snapshots in Oracle 12c ASM?

They are contained in a directory on the same volume as their parent file system. All ACFS snapshot operations for all filesystem are serialized clusterwide. You can create a snapshot from an existing snapshot. They can only be accessed when the file system is mounted.

10.

Which two statements are true about initialization parameters for Clustered ASM instances?

A change to ASM_DISKSTRING requires a restart of all ASM instances for the change to take effect. ASM_POWER_LIMIT controls the number of RDBMS instances that can access a disk group while it is being rebalanced. The ASM_DISKGROUP parameter is optional. The maximum value of ASM_POWER_LIMIT is 1024.

Oracle RAC Set 1

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Oracle RAC Set 1

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