ocp-131

QUESTION NO: 131
When starting up your ASM instance, you receive the following error: ASM
SQL> startup pfile=?/dbs/init+ASM.ora
ASM instance started+
Total System Global Area 104611840 bytes
Fixed Size 1298220 bytes
Variable Size 78147796 bytes
ASM Cache 25165824 bytes
ORA-15032: not all alterations performed
ORA-15063: ASM discovered an insufficient number of disks for disk group“ DGROUP3”
ORA-15063: ASM discovered an insufficient number of disks for disk group“ DGROUP2”
ORA-15063: ASM discovered an insufficient number of disks for disk group“ DGROUP1”
In trying to determine the cause of the problem, you issue this query:
SQL> show parameter asm
NAME TYPE VALUE
———————————— ———– ————————-_
asm_allow_only_raw_disks boolean FALSE
asm_diskgroups string DGROUP1, DGROUP2, DGROUP3
asm_diskstring string
asm_power_limit integer 1
asm_preferred_read_failure_groups string
What is the cause of the error?
A. The ASM_DISKGROUPS parameter is configured for three disk groups: DGROUP1, DGROUP2, and
DGROUP3. The underlying disks for these disk groups have apparently been lost.
B. The format of the ASM_DISKGROUPS parameter is incorrect. It should reference the disk group
numbers, not the names of the disk groups
C. The ASM_POWER_LIMIT parameter is incorrectly set to 1. It should be set to the number of disk
groups being attached to the ASM instance.
D. The ASM_DISKSTRING parameter is not set; therefore disk discovery is not possible.
E. There is insufficient information to solve this problem.
D. The ASM_DISKSTRING parameter is not set correctly. When the ASM instance is started,it will use
the ASM_DISKSTRING to do ASM disk discovery. Correct the ASM_DISKSTRING parameter, and
restart the instance to correct the problem.
Answer: D

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实例启动时，您会收到以下错误：
SQL> startup pfile=?/dbs/init+ASM.ora
ASM instance started+
Total System Global Area 104611840 bytes
Fixed Size 1298220 bytes
Variable Size 78147796 bytes
ASM Cache 25165824 bytes
ORA-15032: not all alterations performed
ORA-15063: ASM discovered an insufficient number of disks for disk group“ DGROUP3”
ORA-15063: ASM discovered an insufficient number of disks for disk group“ DGROUP2”
ORA-15063: ASM discovered an insufficient number of disks for disk group“ DGROUP1”
In trying to determine the cause of the problem, you issue this query:
SQL> show parameter asm
NAME TYPE VALUE
———————————— ———– ————————-_
asm_allow_only_raw_disks boolean FALSE
asm_diskgroups string DGROUP1, DGROUP2, DGROUP3
asm_diskstring string
asm_power_limit integer 1
asm_preferred_read_failure_groups string

错误的原因是什么？

D.ASM磁盘串参数没有设置，因此磁盘是不可能被发现的。