mounted: DATA and DATA2, but the results of the SHOW PARAMETER ASM_DISKGROUPS
command show only DATA as below:
What could have caused the DATA2 dlskgroup to be mounted based on the information injthe V
$ASM_DISKGROUP view?
A.
The DATA2 diskgroup contains the database files required to start a database instance that
depends on this ASM instance.
B.
The DATA2 diskgroup contains the voting files required for this cluster.
C.
The DATA diskgroup has mirrored objects in the DATA2 diskgroup.
D.
The DATA value In the parameter implies all diskgroup strings starting with data.
E.
The DATA2 diskgroup contains the SPFILE needed to start the ASM instance.
Explanation:
Disk Groups Mounted at Startup
At startup, the Oracle ASM instance attempts to mount the following disk groups:
D60488GC11
Oracle 11g: RAC and Grid Infrastructure Administration Accelerated 7 – 5
At startup, the Oracle ASM instance attempts to mount the following disk groups:
Disk groups specified in the ASM_DISKGROUPS initialization parameter
Disk group used by Cluster Synchronization Services (CSS) for voting files
Disk groups used by Oracle Clusterware for Oracle Cluster Registry (OCR)
Disk group used by the Oracle ASM instance to store the ASM server parameter file (SPFILE)
A is wrong. if contains data files, it should show up in asm_diskgroups
B is right. if only voting, it will be mounted but not show up in asm_diskgroup
C is wrong
D is wrong
E is right. SPFILE is in the first Disk Group and ASM automatically mount it
So B.E. are correct