Oracle RAC 删除ASM磁盘组
1.检查确认要删除的磁盘组是否在用
select * from dba_data_files;
select * from dba_temp_files;
select * from v$logfile;2.先在各节点上dismount磁盘组
alter diskgroup REDO01 dismount;
alter diskgroup REDO02 dismount;
alter diskgroup REDODG1 dismount;3.ASM中删除磁盘组
drop diskgroup REDO01 force including contents;
drop diskgroup REDO02 force including contents;
drop diskgroup REDODG1 force including contents;4.crs删除磁盘组
crsctl stat res -t ---查看磁盘组
srvctl remove diskgroup -g REDO01 -f
srvctl remove diskgroup -g REDO02 -f
srvctl remove diskgroup -g REDODG1 -f5.更新crs信息
查看crs依赖的磁盘组：
crsctl status res ora.veraa.db -f
START_DEPENDENCIES=hard(ora.testDG1.dg,ora.testDG2.dg,ora.REDODG1.dg,ora.testDG3.dg,ora.REDO01.dg,ora.REDO02.dg,ora.REDODG01.dg) weak(type:ora.listener.type,global:type:ora.scan_listener.type,uniform:ora.ons,global:ora.gns) pullup(ora.testDG1.dg,ora.testDG2.dg,ora.REDODG1.dg,ora.testDG3.dg,ora.REDO01.dg,ora.REDO02.dg,ora.REDODG01.dg)
START_TIMEOUT=600
STATE_CHANGE_TEMPLATE=
STOP_DEPENDENCIES=hard(intermediate:ora.asm,shutdown:ora.testDG1.dg,shutdown:ora.testDG2.dg,shutdown:ora.REDODG1.dg,shutdown:ora.testDG3.dg,shutdown:ora.REDO01.dg,shutdown:ora.REDO02.dg,shutdown:ora.REDODG01.dg)修改正确的磁盘组：srvctl modify database -d veraa -a "testDG1,testDG2,testDG3,REDODG01"
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