文章內容

刪除Linux非rac環境下的ASM實例

發布時間: 2012/8/20 17:12:04

環境說明：

操作系統：CentOS 5 x86
數據庫：Oracle 10.2.0.1 非RAC環境
ASM實例名：+ASM

參考：metalink node:311350.1

1、檢查ASM實例進程

www.linuxidc.com@Oracle[/home/oracle]> ps -ef|grep asm|grep -v grep
-

Oracle 4263 1 0 Jan20 ? 00:00:02 asm_pmon_+ASM
Oracle 4265 1 0 Jan20 ? 00:00:00 asm_psp0_+ASM
Oracle 4267 1 0 Jan20 ? 00:00:00 asm_mman_+ASM
Oracle 4269 1 0 Jan20 ? 00:00:00 asm_dbw0_+ASM
Oracle 4271 1 0 Jan20 ? 00:00:00 asm_lgwr_+ASM
Oracle 4273 1 0 Jan20 ? 00:00:00 asm_ckpt_+ASM
Oracle 4275 1 0 Jan20 ? 00:00:00 asm_smon_+ASM
Oracle 4277 1 0 Jan20 ? 00:00:00 asm_rbal_+ASM
Oracle 4279 1 0 Jan20 ? 00:00:06 asm_gmon_+ASM

2、設置ASM實例名

www.linuxidc.com@Oracle[/home/oracle]> export ORACLE_SID=+ASM

3、檢查是否有實例在使用ASM

www.linuxidc.com@Oracle[/home/oracle]> sqlplus / as sysdba

SQL*Plus: Release 10.2.0.1.0 - Production on Thu Jan 21 08:44:03 2010

Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production
With the Partitioning, OLAP and Data Mining options

idle> select instance_name from v$asm_client;

no rows selected

如果有實例在使用ASM，需要首先停止這些相關的實例，并備份相關的datafile、controlfile等

4、檢查ASM實例上的diskgroup

idle> select name from v$asm_diskgroup;

NAME
------------------------------
DATA

5、刪除檢查到ASM實例上的diskgroup

idle> drop diskgroup data including contents;

Diskgroup dropped.

6、關閉ASM實例

idle> shutdown
ORA-15100: invalid or missing diskgroup name

ASM instance shutdown
idle> exit
Disconnected from Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production
With the Partitioning, OLAP and Data Mining options

7、從css中刪除ASM實例信息

www.linuxidc.com@Oracle[/home/oracle]> oradism -delete -asmsid +ASM

8、刪除ASM實例相關的spfile、pfile等文件

www.linuxidc.com@Oracle[/home/oracle]> cd $ORACLE_HOME/dbs
www.linuxidc.com@Oracle[/oracle/app/10.1/dbs]> rm -f *+ASM*
www.linuxidc.com@Oracle[/oracle/app/10.1/dbs]> cd $ORACLE_BASE/admin
www.linuxidc.com@Oracle[/oracle/admin]> rm -rf +ASM

9、刪除/etc/oratab文件中的ASM實例相關行

刪除/etc/oratab文件中的如下行

其實刪除Oracle 實例同樣要查出該文件的內容

+ASM:/Oracle/app/10.1:Y

10、用root用戶刪除cssd服務

www.linuxidc.com@root[/Oracle/app/10.1/bin]> ./localconfig delete
Stopping CSSD.
Shutting down CSS daemon.
Shutdown request successfully issued.
Shutdown has begun. The daemons should exit soon.

11、清除ASM使用的設備的文件頭信息

www.linuxidc.com@Oracle[/home/oracle]> cd /dev/raw/
www.linuxidc.com@Oracle[/dev/raw]> ls -l *
crw------- 1 Oracle oinstall 162, 1 Jan 21 08:45 raw1
crw------- 1 Oracle oinstall 162, 2 Jan 21 08:45 raw2
crw------- 1 Oracle oinstall 162, 3 Jan 21 08:45 raw3
www.linuxidc.com@Oracle[/dev/raw]> dd if=/dev/zero of=/dev/raw/raw1 bs=1024 count=10
10+0 records in
10+0 records out
10240 bytes (10 kB) copied, 0.00396028 seconds, 2.6 MB/s
www.linuxidc.com@Oracle[/dev/raw]> dd if=/dev/zero of=/dev/raw/raw2 bs=1024 count=10
10+0 records in
10+0 records out
10240 bytes (10 kB) copied, 0.00485093 seconds, 2.1 MB/s
www.linuxidc.com@Oracle[/dev/raw]> dd if=/dev/zero of=/dev/raw/raw3 bs=1024 count=10
10+0 records in
10+0 records out
10240 bytes (10 kB) copied, 0.00532261 seconds, 1.9 MB/s