You are managing an Oracle 11g database with ASM storage, for which the COMPATIBLE
initialization parameter is set to 11.1.0. In the ASM instance, the COMPATIBLE.RDBMS
attribute for the disk group is set to 10.2 and the COMPATIBLE.ASM attribute is set to 11.1.
Which two statements are true in this scenario for the features enabled for ASM? (Choose
two.)
A.
The ASM-preferred mirror read feature is enabled.
B.
The ASM supports variable sizes for extents of 1, 8, and 64 allocation units.
C.
The ASM disk is dropped immediately from a disk group when it becomes unavailable.
D.
The RDBMS always reads the primary copy of a mirrored extent of the ASM disk group.
What exactly is the “ASM-preferred mirror read” feature?
Is it the “Preferred Read Failure Groups” feature?
or is it the “Fast Mirror Resync” feature?
I will assume the former. Woops this isnt mentioned in
https://docs.oracle.com/cd/E11882_01/server.112/e18951/asmdiskgrps.htm#CHDBCHIH
OK then lets go with the later.
Correct me if I am wrong but “Fast Mirror Resync” requires COMPATIBLE.RDBMS >= 11.1 so that isn’t correct. i.e.
Answer A is wrong
variable sizes for extents also requires COMPATIBLE.RDBMS >= 11.1 so that isn’t correct. i.e.
Answer B is wrong
Maybe this question is meant for an older version of oracle.
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Correct answers are probably A and C
C is old behaviour, the feature DISK_REPAIR_TIME is newly introduced.
B is definitly wrong, that is newly introduced.