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Add Another Datafile to a Tablespace in Oracle
How To Add Another Datafile to a Tablespace in Oracle?
✍: FYIcenter.com
If you created a tablespace with a data file a month ago, now 80% of the data file is used, you should add another data file to the tablespace. This can be done by using the ALTER TABLESPACE ... ADD DATAFILE statement. See the following sample script:
SQL> connect HR/fyicenter SQL> CREATE TABLESPACE my_space 2 DATAFILE '/temp/my_space.dbf' SIZE 10M; Tablespace created. SQL> ALTER TABLESPACE my_space 2 DATAFILE '/temp/my_space_2.dbf' SIZE 5M; Tablespace altered. SQL> SELECT TABLESPACE_NAME, FILE_NAME, BYTES 2 FROM DBA_DATA_FILES; TABLESPACE_NAME FILE_NAME BYTES --------------- --------------------------------- --------- USERS C:\ORACLEXE\ORADATA\XE\USERS.DBF 104857600 SYSAUX C:\ORACLEXE\ORADATA\XE\SYSAUX.DBF 461373440 UNDO C:\ORACLEXE\ORADATA\XE\UNDO.DBF 94371840 SYSTEM C:\ORACLEXE\ORADATA\XE\SYSTEM.DBF 356515840 MY_SPACE C:\TEMP\MY_SPACE.DBF 10485760 MY_SPACE C:\TEMP\MY_SPACE_2.DBF 5242880 SQL> SELECT TABLESPACE_NAME, FILE_ID, BYTES 2 FROM USER_FREE_SPACE 3 WHERE TABLESPAE_NAME IN ('MY_SPACE'); TABLESPACE_NAME FILE_ID BYTES ------------------------------ ---------- ---------- MY_SPACE 6 5177344 MY_SPACE 5 10354688
This script created one tablespace with two data files.
2019-04-09, 877👍, 0💬
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