Thursday, September 5, 2019

Adding a Datafile/Tempfile to Temp Tablespace



Connect with oracle database and check tempfile location & information :

[oracle@localhost ~]$ sqlplus "/as sysdba"

SQL*Plus: Release 12.2.0.1.0 Production on Thu Sep 5 14:58:33 2019

Copyright (c) 1982, 2016, Oracle.  All rights reserved.


Connected to:
Oracle Database 12c Enterprise Edition Release 12.2.0.1.0 - 64bit Production

SQL> set pages 999
set lines 400
col FILE_NAME format a50
col TABLESPACE_NAME format a10
select d.TABLESPACE_NAME, d.FILE_NAME, d.BYTES/1024/1024 SIZE_MB, d.AUTOEXTENSIBLE, d.MAXBYTES/1024/1024 MAXSIZE_MB, d.INCREMENT_BY*(v.BLOCK_SIZE/1024)/1024 INCREMENT_BY_MB
from dba_temp_files d,
 v$tempfile v
where d.FILE_ID = v.FILE#
order by d.TABLESPACE_NAME, d.FILE_NAME;SQL> SQL> SQL> SQL>   2    3    4    5

TABLESPACE FILE_NAME                                             SIZE_MB AUT MAXSIZE_MB INCREMENT_BY_MB
---------- -------------------------------------------------- ---------- --- ---------- ---------------
TEMP       /u01/app/oracle/oradata/risdev/temp01.dbf                  32 YES 32767.9844            .625

SQL>


Add tempfile to temp tablepsace : 

SQL> ALTER TABLESPACE TEMP ADD TEMPFILE '/u01/app/oracle/oradata/risdev/temp02.dbf' SIZE 5G AUTOEXTEND ON NEXT 1G MAXSIZE 32767M;

Tablespace altered.

SQL>



Verify added tempfile : 



SQL> set pages 999
set lines 400
col FILE_NAME format a50
col TABLESPACE_NAME format a10
select d.TABLESPACE_NAME, d.FILE_NAME, d.BYTES/1024/1024 SIZE_MB, d.AUTOEXTENSIBLE, d.MAXBYTES/1024/1024 MAXSIZE_MB, d.INCREMENT_BY*(v.BLOCK_SIZE/1024)/1024 INCREMENT_BY_MB
from dba_temp_files d,
 v$tempfile v
where d.FILE_ID = v.FILE#
order by d.TABLESPACE_NAME, d.FILE_NAME;SQL> SQL> SQL> SQL>   2    3    4    5

TABLESPACE FILE_NAME                                             SIZE_MB AUT MAXSIZE_MB INCREMENT_BY_MB
---------- -------------------------------------------------- ---------- --- ---------- ---------------
TEMP       /u01/app/oracle/oradata/risdev/temp01.dbf                  32 YES 32767.9844            .625
TEMP       /u01/app/oracle/oradata/risdev/temp02.dbf                5120 YES      32767            1024

SQL>



* Make sure enough space available at mount point .

Query:

set pages 999
set lines 400
col FILE_NAME format a50
col TABLESPACE_NAME format a10
select d.TABLESPACE_NAME, d.FILE_NAME, d.BYTES/1024/1024 SIZE_MB, d.AUTOEXTENSIBLE, d.MAXBYTES/1024/1024 MAXSIZE_MB, d.INCREMENT_BY*(v.BLOCK_SIZE/1024)/1024 INCREMENT_BY_MB
from dba_temp_files d,
 v$tempfile v
where d.FILE_ID = v.FILE#

order by d.TABLESPACE_NAME, d.FILE_NAME;

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About the Author : Anurag Pandey | Database cloud Architect | Oracle | SQL Server | PostgreSQL | AI and Data Platform Enthusiast

Anurag Pandey is a Database Architect with expertise in Oracle, PostgreSQL, SQL Server, Linux, and enterprise database platforms and specializes in database architecture, performance tuning, high availability, disaster recovery, cloud modernization, and operational excellence. With extensive experience in enterprise-scale environments, Anurag is passionate about leveraging AI, automation, and modern data platforms to improve reliability, scalability, and business outcomes. He actively contributes to technical communities through knowledge sharing, architecture guidance, and thought leadership in database and data engineering domains.

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