创建临时表空间mytemp1
SQL> create temporary tablespace mytemp1 tempfile '/u01/app/oraData/temp/mytemp1.dmp' size 10M;
Tablespace created.
把mytemp1表空间放入到表空间组hbk_group
SQL> alter tablespace mytemp1 tablespace group hbk_group;
Tablespace altered.
也可以一次性创建表空间并加入到表空间组
SQL> create temporary tablespace mytemp2 tempfile '/u01/app/oraData/temp/mytemp2.dbf' size 10M tablespace group hbk_group;
Tablespace created.
查看表空间组的信息
SQL> select * from dba_tablespace_groups;
GROUP_NAME TABLESPACE_NAME
------------------------------ ------------------------------
HBK_GROUP MYTEMP1
HBK_GROUP MYTEMP2
把默认临时表空间改成表空间组hbk_group
查看当前的默认表空间
SQL> select property_name,property_value from database_properties where property_name='DEFAULT_TEMP_TABLESPACE';
PROPERTY_NAME
------------------------------
PROPERTY_VALUE
--------------------------------------------------------------------------------
DEFAULT_TEMP_TABLESPACE
TEMP
可以知道当前的默认临时表空间为TEMP
下面进行修改
SQL> alter database default temporary tablespace hbk_group;
Database altered.
再次查看，已经修改成了表空间组hbk_group
SQL> select property_name,property_value from database_properties where property_name='DEFAULT_TEMP_TABLESPACE';
PROPERTY_NAME
------------------------------
PROPERTY_VALUE
--------------------------------------------------------------------------------
DEFAULT_TEMP_TABLESPACE
HBK_GROUP
把临时表空间mytemp2从表空间组hbk_group中删除，设置空即可
SQL> alter tablespace mytemp2 tablespace group '';
Tablespace altered.
查看表空间组的信息，只剩下mytemp1
SQL> select * from dba_tablespace_groups;
GROUP_NAME TABLESPACE_NAME
------------------------------ ------------------------------
HBK_GROUP MYTEMP1
查看数据库有哪些临时表空间，使用视图DBA_TEMP_FILES
SQL> desc dba_temp_files;
Name Null? Type
----------------------------------------- -------- ----------------------------
FILE_NAME VARCHAR2(513)
FILE_ID NUMBER
TABLESPACE_NAME NOT NULL VARCHAR2(30)
BYTES NUMBER
BLOCKS NUMBER
STATUS VARCHAR2(7)
RELATIVE_FNO NUMBER
AUTOEXTENSIBLE VARCHAR2(3)
MAXBYTES NUMBER
MAXBLOCKS NUMBER
INCREMENT_BY NUMBER
USER_BYTES NUMBER
USER_BLOCKS NUMBER
SQL> col file_name format a60
SQL> col tablespace_name format a10
SQL> select tablespace_name,file_name,status from dba_temp_files order by tablespace_name;
TABLESPACE FILE_NAME STATUS
---------- ------------------------------------------------------------ -------
HBK_TEMP /u01/app/oraData/orcl/hbk_temp.dbf ONLINE
MYTEMP1 /u01/app/oraData/temp/mytemp1.dmp ONLINE
MYTEMP2 /u01/app/oraData/temp/mytemp2.dbf ONLINE
TEMP /u01/app/oraData/orcl/temp01.dbf ONLINE