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Which two statements are true about the UNDROP clause of the ALTER DISKGROUP statement?
A. It cancels pending drops of disks dropped using the DROP DISKGROUP command.
B. A disk cannot be undropped as a result of a drop diskgroup.
C. It automatically unmounts the disks after successfully undropping them.
D. It is not possible to cancel pending drops of disks dropped using the force option.
The UNDROP DISKS clause of the ALTER DISKGROUP statement cannot be used to restore disks that are being dropped as the result of a DROP DISKGROUP statement, or for disks that are being dropped using the FORCE clause.
Examine the output of the asmcmd and srvctl commands:
$ asmcmd showclustermode
ASM cluster : Flex mode enabled
$ srvctl status asm –detail
ASM is running on host01, host03
ASM is enabled.
$ srvctl config asm
ASM home: /u01/app/12.1.0/grid
Password file: +DATA/orapwASM
ASM listener: LISTENER
ASM instance count: 2
Cluster ASM listener: ASMNET1LSNR_ASM
Then you execute this command:
$ srvctl relocate asm – currentnode host03 –targetnode host02
Which three statements are true regarding the execution of this command based on the output shown?
A. It fails because an ASMinstance is not configured to run on HOST02.
B. It succeeds and starts an ASM instance on HOST02 and shuts down the ASM instance on HOST03.
C. It succeeds and 12c database instances connected to the ASM instance on HOST03 can be reconnected to the ASM instance on HOST02.
D. It fails because the ASM instance has not been shut down first on HOST03.
E. It succeeds and starts an ASM instance on HOST02 but the ASM instance on HOST03 is not shut down until all connected clients disconnected.
F. It succeeds and 12c database instances connected to the ASM instance on HOST03 can be reconnected to the ASM instance on HOST01.
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Examine this command to create a volume in the DATA disk group:
SQL>ALTER DISKGROUP DATA ADD VOLUME vo11 SIZE 10g HIGH
The DATA disk group has 50GB free space.
Which two are prerequisites for successful execution of this command?
A. COMAPTIBLE.ASM and COMPATIBLE.ADVM must be set to 11.2 or higher for the DATA disk group.
B. The DATA disk group must not be created with external redundancy.
C. The DATA disk group must not contain any other volume.
D. The DATA disk group must have at least three failure groups.
E. The DATA disk group must have an AU size of 1MB.
The compatibility parameters COMPATIBLE.ASM and COMPATIBLE.ADVM must be set to 11.2 or higher for the disk group. A high redundancy disk group must contain at least three failure groups.
Which two statements are true about v$asm – views in clustered environment?
A. They exist both in ASM and RDBMS instances, and display the same output.
B. Their names can be seen in dict when connected to an ASM instance.
C. Their names can be seen in v$fixed_table when connected to an instance of any type that is started.
D. They exist in both in ASM and RDBSM instances, but they can display different outputs depending on the instance type.
E. gv$asm_attribute can be used to display the ASM_POWER_LIMIT attribute of all ASM instances in the cluster.
You can use the views to obtain information about Oracle Automatic Storage Management Cluster File System (OracleACFS). These views are accessible from the Oracle ASM instance.
Which two statements are true about ASM default templates?
A. Default data file templates are only created by ASM when a normal redundancy disk group is created.
B. Default template settings for redundancy depends on the disk group redundancy.
C. Default templates for a disk group can be modified.
D. Default template setting for striping depends on disk group redundancy.
E. Templates may be shared across disk groups.
Default template settings depend on the diskgroup type. The default template for data files for a normal redundancy.
Which three statements are true regarding Flex ASM on a four-node cluster consisting of three-hub nodes and a leaf node?
A. An ASM instance and database instances can coexist on the same hub node.
B. A database instance on a hub node canbe a client of an ASM instance running on any leaf node.
C. A database instance on a hub node can be a client of an ASM instance running on any hub node.
D. A database instance on a leaf node can be a client of an ASM instance running on any hub node.
E. A database instance on a hub node uses an ASM instance as an I/O server when requesting I/O to diskgroups.
F. ASM Cluster File System (ASFS) can only be deployed on hub nodes.
Architecturally Oracle Flex Cluster comprises of a Hub and Leafarchitecture where in only the Hub nodes will only have direct access to Oracle Cluster Registry (OCR) and Voting Disk (VD). However application can access the database via Leaf nodes without ASM instance NOT running on Leaf nodes. The connection to the database is through Hub making it transparent for the application.
Hub Nodes are connected among them via private network and have direct access to the shared storage just like previous versions. These nodes are the ones that access the Oracle Cluster Registry (OCR) and Voting Disk (VD) directly.
Leaf Nodes are lighter and are not connected among them, neither accesses the shared storage like the Hub Nodes. Each Leaf Node communicates with the Hub Node that is attached to, and it is connected to the cluster via the Hub Node that is linked to.