查看 v$asm_disk， v$asm_diskgroup 以及asm 日志

[oracle@TestXLink dbs]$ sqlplus /nolog

SQL*Plus: Release 11.2.0.1.0 Production on Wed Mar 14 23:17:54 2012

Copyright (c) 1982, 2009, Oracle. All rights reserved.

SQL> conn /as sysasm
Connected to an idle instance.
SQL> startup mount
ASM instance started

Total System Global Area 284565504 bytes
Fixed Size 1336036 bytes
Variable Size 258063644 bytes
ASM Cache 25165824 bytes
ORA-15032: not all alterations performed
ORA-15017: diskgroup "DATA" cannot be mounted
ORA-15063: ASM discovered an insufficient number of disks for diskgroup "

SQL> col path for a30
SQL> set lines 100
SQL> select mode_status,name,state,path from v$asm_disk;

MODE_ST NAME STATE PATH
------- ------------------------------ -------- ------------------------------
ONLINE NORMAL /dev/raw/raw4
ONLINE NORMAL /dev/raw/raw2
ONLINE NORMAL /dev/raw/raw5
ONLINE NORMAL /dev/raw/raw3
ONLINE NORMAL /dev/raw/raw1
SQL> select * from v$asm_diskgroup
2 ;
no rows selected
SQL> show parameter asm_disk
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
asm_diskgroups string DATA
asm_diskstring string /dev/raw/raw*
SQL>

以下的asm实例的日志
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
"alert_+ASM.log" 1376L, 59479C 1286,1 95%
asm_diskstring = "/dev/raw/raw*"
asm_diskgroups = "DATA"
asm_power_limit = 1
diagnostic_dest = "/u01/app/oracle/"
Wed Mar 14 23:18:07 2012
PMON started with pid=2, OS id=4493
Wed Mar 14 23:18:07 2012
VKTM started with pid=3, OS id=4495 at elevated priority
VKTM running at (10)millisec precision with DBRM quantum (100)ms
Wed Mar 14 23:18:07 2012
GEN0 started with pid=4, OS id=4499
Wed Mar 14 23:18:07 2012
DIAG started with pid=5, OS id=4501
Wed Mar 14 23:18:07 2012
PSP0 started with pid=6, OS id=4503
Wed Mar 14 23:18:07 2012
DIA0 started with pid=7, OS id=4505
Wed Mar 14 23:18:07 2012
MMAN started with pid=8, OS id=4507
Wed Mar 14 23:18:07 2012
DBW0 started with pid=9, OS id=4509
Wed Mar 14 23:18:07 2012
LGWR started with pid=10, OS id=4511
Wed Mar 14 23:18:07 2012
CKPT started with pid=11, OS id=4513
Wed Mar 14 23:18:07 2012
SMON started with pid=12, OS id=4515
Wed Mar 14 23:18:07 2012
RBAL started with pid=13, OS id=4517
Wed Mar 14 23:18:07 2012
GMON started with pid=14, OS id=4519
Wed Mar 14 23:18:07 2012
MMON started with pid=15, OS id=4521
Wed Mar 14 23:18:07 2012
MMNL started with pid=16, OS id=4523
ORACLE_BASE from environment = /u01/app/oracle
Wed Mar 14 23:18:07 2012
SQL> ALTER DISKGROUP ALL MOUNT
NOTE: Diskgroups listed in ASM_DISKGROUPS are
DATA
NOTE: cache registered group DATA number=1 incarn=0xbc9dab97
NOTE: cache began mount (first) of group DATA number=1 incarn=0xbc9dab97
ERROR: no PST quorum in group: required 2, found 0
NOTE: cache dismounting (clean) group 1/0xBC9DAB97 (DATA)
NOTE: dbwr not being msg'd to dismount
NOTE: lgwr not being msg'd to dismount
NOTE: cache dismounted group 1/0xBC9DAB97 (DATA)
NOTE: cache ending mount (fail) of group DATA number=1 incarn=0xbc9dab97
kfdp_dismount(): 2
kfdp_dismountBg(): 2
ERROR: diskgroup DATA was not mounted
NOTE: cache deleting context for group DATA 1/-1130517609
ORA-15032: not all alterations performed
ORA-15017: diskgroup "DATA" cannot be mounted
ORA-15063: ASM discovered an insufficient number of disks for diskgroup "DATA"
ERROR: ALTER DISKGROUP ALL MOUNT