【Oracle Database】oracle tablespace & datafile
阿新 • • 發佈：2020-11-20
建立表空間
SQL> create tablespace soe
datafile '/u01/app/oracle/oradata/wallet/soe01.dbf'
size 1024M
extent management local
uniform size 1M;
擴充套件表空間
方法一：在表空間中增加資料檔案
SQL> alter tablespace soe
add datafile '/u01/app/oracle/oradata/wallet/soe02.dbf'
size 2048M;
方法二：資料檔案自動擴充套件
SQL> alter database datafile '/u01/app/oracle/oradata/wallet/soe01.dbf' autoextend on;
方法三：增加表空間中資料檔案的大小
SQL> alter database datafile '/u01/app/oracle/oradata/wallet/soe01.dbf' resize 2048M;
移動表空間資料檔案
SQL> alter tablespace soe offline;
SQL> host cp /u01/app/oracle/oradata/wallet/soe02.dbf /u02/app/oracle/oradata/wallet
SQL> alter tablespace soe
rename datafile '/u01/app/oracle/oradata/wallet/soe02.dbf'
to '/u02/app/oracle/oradata/wallet/soe02.dbf';
SQL> alter tablespace soe online;
SQL> host rm -rf /u01/app/oracle/oradata/wallet/soe02.dbf
刪除表空間
SQL> drop tablespace soe including contents and datafiles;
建立臨時表空間
SQL> create temporary tablespace temp01
tempfile '/u01/app/oracle/oradata/wallet/temp01.dbf'
size 1024M
extent management local
uniform size 1M;
擴充套件臨時表空間
SQL> alter tablespace temp01
add tempfile '/u01/app/oracle/oradata/wallet/temp02.dbf'
size 1024M;
查詢資料庫預設臨時表空間
SQL> col property_name for a40
SQL> col property_value for a40
SQL> col description for a40
SQL> select * from database_properties where property_name='DEFAULT_TEMP_TABLESPACE';
PROPERTY_NAME PROPERTY_VALUE DESCRIPTION
---------------------------------------- ---------------------------------------- ----------------------------------------
DEFAULT_TEMP_TABLESPACE TEMP Name of default temporary tablespace
修改資料庫預設臨時表空間
SQL> alter database default temporary tablespace temp01;
SQL> select * from database_properties where property_name='DEFAULT_TEMP_TABLESPACE';
PROPERTY_NAME PROPERTY_VALUE DESCRIPTION
---------------------------------------- ---------------------------------------- ----------------------------------------
DEFAULT_TEMP_TABLESPACE TEMP01 Name of default temporary tablespace
刪除臨時表空間
SQL> drop tablespace temp including contents and datafiles;
建立UNDO表空間
SQL> create undo tablespace undotbs2
datafile '/u01/app/oracle/oradata/wallet/undotbs02.dbf'
size 2048M;
查詢活動UNDO表空間
SQL> show parameter undo_tablespace
NAME TYPE VALUE
------------------------------------ --------------------------------- ------------------------------
undo_tablespace string UNDOTBS1
SQL> select count(*) from dba_undo_extents where status = 'ACTIVE' and tablespace_name = 'UNDOTBS1';
COUNT(*)
----------
6
修改活動UNDO表空間
SQL> alter system set undo_tablespace=undotbs2;
SQL> show parameter undo_tablespace
NAME TYPE VALUE
------------------------------------ --------------------------------- ------------------------------
undo_tablespace string UNDOTBS2
刪除UNDO表空間
SQL> select count(*) from dba_undo_extents where status = 'ACTIVE' and tablespace_name = 'UNDOTBS1';
COUNT(*)
----------
0
SQL> drop tablespace undotbs1 including contents and datafiles;
SQL> @dba_tablespaces.sql
+------------------------------------------------------------------------+
| Report : Tablespaces |
| Instance : wallet |
+------------------------------------------------------------------------+
Tablespace Name Status TS Type Ext. Mgt. Seg. Mgt. TS Size (MB) Used (MB) Pct. Used
------------------------------ --------- --------------- ---------- ---------- ------------------ ------------------ ---------
SYSAUX ONLINE PERMANENT LOCAL AUTO 2,048 482 24
UNDOTBS1 ONLINE UNDO LOCAL MANUAL 1,024 114 11
TEMP ONLINE TEMPORARY LOCAL MANUAL 1,024 28 3
SYSTEM ONLINE PERMANENT LOCAL MANUAL 2,048 738 36
SOE ONLINE PERMANENT LOCAL AUTO 4,096 1,035 25
USERS ONLINE PERMANENT LOCAL AUTO 1,024 1 0
------------------ ------------------ ---------
Average 16
Total 11,264 2,398
6 rows selected.
SQL> @dba_file_space_usage.sql
+------------------------------------------------------------------------+
| Report : File Usage |
| Instance : wallet |
+------------------------------------------------------------------------+
Tablespace Name Filename FILE_ID File Size (MB) Used (MB) Pct. Used
-------------------- -------------------------------------------------- ---------- ------------------ ------------------ ---------
SOE /u01/app/oracle/oradata/wallet/soe01.dbf 5 2,048 522 25
SOE /u01/app/oracle/oradata/wallet/soe02.dbf 6 2,048 513 25
SYSAUX /u01/app/oracle/oradata/wallet/sysaux01.dbf 2 2,048 482 23
SYSTEM /u01/app/oracle/oradata/wallet/system01.dbf 1 2,048 738 36
TEMP /u01/app/oracle/oradata/wallet/temp01.dbf 1 1,024 28 2
UNDOTBS1 /u01/app/oracle/oradata/wallet/undotbs01.dbf 3 1,024 114 11
USERS /u01/app/oracle/oradata/wallet/users01.dbf 4 1,024 1 0
------------------ ------------------ ---------
Average 17
Total 11,264 2,398
7 rows selected.