今天在Xdata上犯了个小错误。。 上午忙活了半天
几个DG一直没办法MOUNT，显示问题很难看。只觉得是disk missing 又没说具体哪个disk，
然后 mount force也不顶用。
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SQL> ALTER DISKGROUP high MOUNT force NOTE: cache registered group HIGH number=1 incarn=0x9679682f NOTE: cache began mount (first) of group HIGH number=1 incarn=0x9679682f Sun Dec 26 22:01:38 2010 ERROR: no PST quorum in group: required 2, found 0 NOTE: cache dismounting (not clean) group 1/0x9679682F (HIGH) NOTE: dbwr not being msg'd to dismount NOTE: lgwr not being msg'd to dismount NOTE: cache dismounted group 1/0x9679682F (HIGH) NOTE: cache ending mount (fail) of group HIGH number=1 incarn=0x9679682f NOTE: cache deleting context for group HIGH 1/0x9679682f GMON dismounting group 1 at 31 for pid 29, osid 19112 ERROR: diskgroup HIGH was not mounted ORA-15032: not all alterations performed ORA-15017: diskgroup "HIGH" cannot be mounted ORA-15063: ASM discovered an insufficient number of disks for diskgroup "HIGH" ERROR: ALTER DISKGROUP high MOUNT force |
找了半天发现是重启instance时候不小心，discovery_string改掉了，
是我以前本用来建OCRVD时候，DG太多用来过滤的，于是只好改了回来。。
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asm_diskstring = "/o/*/PCW_CD_01*" ... ALTER SYSTEM SET asm_diskstring='/o/*/*' SCOPE=BOTH SID='*'; |
然后mount就一切顺利了。。。看来有时候小细节不能忽视啊。。