ASM实例操作
在SQLPLUS中对ASM实例进行操作
1、查看ASM磁盘组状况
SELECT GROUP_NUMBER, NAME, TYPE, STATE, TOTAL_MB, FREE_MB, OFFLINE_DISKS FROM V$ASM_DISKGROUP;
GROUP_NUMBER NAME TYPE STATE TOTAL_MB FREE_MB OFFLINE_DISKS
------------ ---------- ------ ----------- ---------- ---------- -------------
1 DG1 NORMAL MOUNTED 102365 102208
2、查看ASM磁盘信息
SELECT GROUP_NUMBER, DISK_NUMBER, LABEL, STATE, FAILGROUP, NAME, PATH, TOTAL_MB, FREE_MB FROM V$ASM_DISK;
GROUP_NUMBER DISK_NUMBER LABEL STATE FAILGROUP NAME
------------ ----------- ----- -------- ---------- ----------
PATH TOTAL_MB FREE_MB
------------------------- ---------- ----------
1 4 NORMAL DG1_0004 DG1_0004
/dev/oracleasm/disks/D5 20473 20443
1 3 NORMAL DG1_0003 DG1_0003
/dev/oracleasm/disks/D4 20473 20443
1 2 NORMAL DG1_0002 DG1_0002
/dev/oracleasm/disks/D3 20473 20442
GROUP_NUMBER DISK_NUMBER LABEL STATE FAILGROUP NAME
------------ ----------- ----- -------- ---------- ----------
PATH TOTAL_MB FREE_MB
------------------------- ---------- ----------
1 1 NORMAL DG1_0001 DG1_0001
/dev/oracleasm/disks/D2 20473 20439
1 0 NORMAL DG1_0000 DG1_0000
/dev/oracleasm/disks/D1 20473 20441
3、增加磁盘组:
CREATE DISKGROUP dgd NORMAL REDUNDANCY
FAILGROUP failgroup1 DISK
'/dev/raw/raw1' NAME diskA1 SIZE 120G FORCE,
'/dev/raw/raw2',
'/dev/raw/raw3'
FAILGROUP failgroup2 DISK
'/dev/raw/raw4',
'/dev/raw/raw5',
'/dev/raw/raw6';
4、增加fail组:
ALTER DISKGROUP dg1 ADD FAILGROUP fail3 DISK '/dev/raw/raw22' name disk5 REBALANCE POWER 11;
5、添加ASM磁盘:
ALTER DISKGROUP dg1 add failgroup fail1 DISK '/dev/raw/raw19' name disk3;
6、删除ASM磁盘:
ALTER DISKGROUP dg1 DROP DISK disk4;
7、卸载磁盘组，要先关闭安装在ASM上的rdbms数据库实例
ALTER DISKGROUP dg2 DISMOUNT;
8、检测磁盘组或磁盘:
ALTER DISKGROUP dg1 CHECK ALL;
ALTER DISKGROUP DG1 CHECK DISK VOL1;
7、控制均衡容错组数据的速度:
ALTER DISKGROUP dg2 REBALANCE POWER 11;
平衡速度控制参数:
asm_power_limit = 1~11
8、检查数据库平衡速度:
SELECT GROUP_NUMBER, OPERATION, STATE, EST_WORK, SOFAR, EST_RATE, EST_MINUTES FROM V$ASM_OPERATION;
9、删除磁盘组：
DROP DISKGROUP GROUP1 INCLUDING CONTENTS;
10、取消删除：
ALTER DISKGROUP group1 UNDROP DISKS;
11、添加目录:
ALTER DISKGROUP DG1 ADD DIRECTORY '+DG1/ad';
CREATE TABLESPACE T1 DATAFILE '+DG1/ad/t1.dbf' SIZE 100M AUOEXTEND ON;
12、重命名目录:表空间不受任何影响
ALTER DISKGROUP DG1 RENAME DIRECTORY '+DG1/ad' to '+DG1/add';
13、删除目录:
ALTER DISKGROUP DG1 DROP DIRECTORY '+DG1/ad/demo' FORCE;
14、创建别名:
ALTER DISKGROUP DG1 ADD ALIAS '+DG1/ad/spfilead.ora' FOR '+DG1/ad/parameterfile/spfile.269.777212438';
15、重命名别名:
alter diskgroup dg1 rename alias '+DG1/ASMDB/spfile.ora' to '+DG1/ASMDB/spfileasmdb.ora';
16、删除别名:删除别名文件不会被删除
DROP DISKGROUP DG1 DROP ALIAS '+DG1/ASMDB/spfileasmdb.ora';