1、登录到命令行
切换到grid用户
[[email protected] ~]$ sqlplus / as sysasm sql*Plus: Release 12.2.0.1.0 Production on Wed May 30 05:40:48 2018 copyright (c) 1982,2016,Oracle. All rights reserved. Connected to: Oracle Database 12c Enterprise Edition Release 12.2.0.1.0 - 64bit Production 注意：这里是sysasm登录才能有权限修改
2.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;
3.先在各节点上dismount磁盘组
alter diskgroup REDO01 dismount;
alter diskgroup REDO02 dismount;
alter diskgroup REDODG1 dismount;
4.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;
5.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 -f
6.更新crs信息查看crs依赖的磁盘组：crsctl status res ora.veraa.db -fSTART_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.REDODG01.dg)START_TIMEOUT=600STATE_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"
