oracle 删除asm,Oracle ASM磁盘组的卸载与删除
**创建磁盘组:**
使用Oracle用户连接
[oracle@rac1 ~]$ sqlplus / as sysdba
SQL>create diskgroup arch external redundancy disk '/dev/asm-disk5' ;

Oracle通过ASM实例管理磁盘组,要使用Gird用户连接ASM实例进行创建
[grid@rac1 ~]$ sqlplus / as sysasm
SQL> create diskgroup arch external redundancy disk '/dev/asm-disk5' ;
Diskgroup created.
SQL> select name,state from v$asm_diskgroup;
NAME STATE
DATA MOUNTED
OCR MOUNTED
ARCH MOUNTED
**卸载磁盘组:**
SQL> alter diskgroup arch dismount;
Diskgroup altered.
尝试卸载DATA:
SQL> alter diskgroup data dismount;
alter diskgroup data dismount * ERROR at line 1: ORA-15032: not all alterations performed ORA-15027: active use of diskgroup "
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