ORACLE ASM環境中如何刪除和創建表空間（數據文件）

三年前曾經花了點時間去學ORACLE，最近慢慢發現忘記了很多，比如在ASM上創建表空間，刪除表空間等的基本操作，連語法的忘了；今天做了個測試，記錄一下

 

1、列出表空間

SQL> select name from v$tablespace;

NAME
------------------------------
SYSTEM
UNDOTBS1
SYSAUX
USERS
TEMP
UNDOTBS2
WOFSSPACE

7 rows selected.

 

2、下面刪除WOFSSPACE這個表空間，包括屬於他的數據文件（物理上也同時刪除）

SQL> drop tablespace WOFSSPACE including contents and datafiles;

Tablespace dropped.

 

3、刪除之後，查詢表空間視圖確認

SQL> select name from v$tablespace;

NAME
------------------------------
SYSTEM
UNDOTBS1
SYSAUX
USERS
TEMP
UNDOTBS2

6 rows selected.

 

4、到ASM目錄去驗證一把，看物理文件是否真的已經刪除

SQL> exit
Disconnected from Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bit Production
With the Partitioning, Real Application Clusters, OLAP, Data Mining
and Real Application Testing options
[oracle@racdb1 ~]$ export ORACLE_SID=+ASM1
[oracle@racdb1 ~]$ asmcmd
ASMCMD> ls
ARCH/
DATA/
ASMCMD> cd DATA
ASMCMD> ls
RACDB/
ASMCMD> cd RACDB
ASMCMD> ls
CONTROLFILE/
DATAFILE/
ONLINELOG/
PARAMETERFILE/
TEMPFILE/
spfileracdb.ora
ASMCMD> cd DATAFILE
ASMCMD> ll
        commands:
        -------- 
        cd
        du
        find
        help
        ls
        lsct
        lsdg
        mkalias
        mkdir
        pwd
        rm
        rmalias
ASMCMD> ls
SYSAUX.262.774579675
SYSTEM.264.774579675
UNDOTBS1.267.774579675
UNDOTBS2.265.774579743
USERS.259.774579675
ASMCMD>

可以可以到物理文件也已經被刪除了；如果沒有加INCLUDING這個參數，那麼可以進去ASM目錄，用RM刪除之；

 

5、在ASM上創建表空間，自定義目錄及DATAFILE的名字

SQL> create tablespace WOFSSPACE datafile '+DATA/RACDB/DATAFILE/WOFSSPACE.dbf' size 4096m autoextend on;

Tablespace created.

 

6、查詢確認OK

SQL> select name from v$datafile;

NAME
--------------------------------------------------------------------------------
+DATA/racdb/datafile/system.264.774579675
+DATA/racdb/datafile/undotbs1.267.774579675
+DATA/racdb/datafile/sysaux.262.774579675
+DATA/racdb/datafile/users.259.774579675
+DATA/racdb/datafile/undotbs2.265.774579743
+DATA/racdb/datafile/wofsspace.dbf

6 rows selected.

SQL> select name from v$tablespace;

NAME
------------------------------
SYSTEM
UNDOTBS1
SYSAUX
USERS
TEMP
UNDOTBS2
WOFSSPACE

7 rows selected.

SQL>