Steps to be followed to rename or move control files location

This article answers the following queries :

·         How to find out the current location of control files?

·         Can we rename or move control file location? What is the parameter for that ?

·         What is the process to be followed to rename or move control file location?

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Query to find current location of control files :

SQL > select name from v$controlfile;

After executing the above query, System outputs  the location of all control files in the system

Usually there will be 3 control files in oracle database( for SAP applications).

Can we rename or move control files location? If so, what is that parameter?

Yes. If required, control files location can changed with the control_files instance parameter.

Please execute the below query to display the current value of control_files parameter

SQL > show parameter control_files

The above command outputs the current value. This value can be changed with the ALTER SYSTEM command. In other words the current location of the control files can be changed  using ALTER SYSTEM command.

Steps to be followed to rename or move control files location

1)      Alter the control_files parameter using the ALTER SYSTEM command

Syntax:

SQL> ALTER SYSTEM SET control_files=’<New controlfile1 path or newcontrol file name>’, <New controlfile2 path or newcontrol file name>’, <New controlfile13 path or newcontrol name>’ SCOPE=SPFILE;

 Eg: In the below command set the paths or names  for various control files  as per your requirement

SQL> ALTER SYSTEM SET control_files=’D:\ORACLE\..\..\..\Newname1.CTL’, 

’D:\ORACLE\..\..\..\Newname2.CTL’,  ’D:\ORACLE\..\..\..\Newname3.CTL’

SCOPE=SPFILE;

2)     Shutdown the database

SQL > shutdown immediate;

3)     Rename the physical file in the OS

SQL >  HOST  MOVE <old controlfile with path> <new controlfile with path >

 Eg:

SQL > HOST  MOVE  D:\ORACLE\ORADATA\CONTROL01.CTL  D:\ORACLE\ORADATA\NEW_CONTROL01.CTL

4)     Start the database

SQL > startup

Related Links :

Control file and its functions in Oracle

How to recover an SAP instance when a control file got corrupted?

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