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How do I change my datafile location?

Author

Robert Miller

Published Mar 03, 2026

How do I change my datafile location?

Procedures for Renaming and Relocating Datafiles in a Single Tablespace

  1. Take the tablespace that contains the datafiles offline.
  2. Rename the datafiles using the operating system.
  3. Use the ALTER TABLESPACE statement with the RENAME DATAFILE clause to change the filenames within the database.
  4. Back up the database.

How do I move datafiles from one location to another in Oracle?

To move or rename a datafile do the following.

  1. Shutdown the database.
  2. Rename the physical file on the OS.
  3. Start the database in mount mode.
  4. Issue the ALTER DATABASE RENAME FILE command to rename the file within the Oracle dictionary.
  5. Open the database.

How do I move tablespace to another location?

To move the datafile associated with the USERS tablespace, first take the tablespace offline and move the file at the OS level. Next, use the alter tablespace command to rename the file in the database to reflect the new location. Finally, the tablespace is brought back online.

How do I move datafile from one directory to another in Oracle 12c?

Below are examples of how the ALTER DATABASE MOVE DATAFILE command can be used to Rename, Relocate, Copy or Move data files to to ASM.

  1. Rename: ALTER DATABASE MOVE DATAFILE ‘/u01/app/oracle/oradata/PSTG/datafile/test.dbf’ TO ‘/u01/app/oracle/oradata/PSTG/datafile/tester.dbf’;
  2. Relocate:
  3. Copy:
  4. Move to ASM:

How do I edit a control file in Oracle?

Shut down the database. Copy an existing control file to a new location, using operating system commands. Edit the CONTROL_FILES parameter in the database initialization parameter file to add the new control file name, or to change the existing control filename. Restart the database.

What is switch datafile all?

DATAFILE ALL. Specifies that all data files for which a SET NEWNAME FOR DATAFILE command has been issued in this job are switched to their new name (see Example 3-56).

How do I move Datafile from one disk to another?

Move ASM files from one diskgroup to another diskgroup tips

  1. Step 1: Get the data file name: select. file_name. from. dba_data_files;
  2. Step 2: Identify the target diskgroup to migrate to: select. name. from.
  3. Step 3: Take the old data file offline: alter database datafile. ‘+MYDB_OLDDATA/mysid/app_data.nnn’ offline;

How do I fix my ORA 00205?

ORACLE instance started. Confirm the controlfile name using asmcmd or linux file system by going to the relevant file location. If the Controlfile file does not match the parameter location, update with the correct location command. SQL> alter system set control_files=’ +DATAC/TESTDB/CONTROLFILE/ current.

What is different about V Datafile and Dba_data_files?

Can someone please explain to me what is the difference between dba_data_files and v$datafile views? Both have the same number of records, the only differences I see is that v$datafile view has more fields and some fields are different (v$datafile does not have user-bytes fiels.

Where are Oracle control files located?

ORACLE_BASE\oradata \DB_NAME directory
The preconfigured database contains two control files located in the ORACLE_BASE\oradata \DB_NAME directory. Oracle recommends that you keep at least two control files (on separate physical drives) for each database, and set the CONTROL_FILES initialization parameter to list each control file.

How do I recreate a control file?

SQL> alter database backup controlfile to trace; A trace file will be generated in the user_dump_destination directory. After navigating to the directory locate the latest trace file by date/time by issuing “ls -ltr” command. Modify the trace file and use it as a script to create the control.

How do I switch datafile?

After starting RMAN and connecting to the database as TARGET , you can use the SET NEWNAME command to rename the data file, then RESTORE to restore the missing data file. You run SWITCH to point the control file to the new data file and then RECOVER .

How to find the default location in which Oracle dbf files are created?

How to find the default location in which Oracle DBF files are created? During the creation of a new Tablespace in Oracle Database, the user has to enter the DBF file name that he (or she) want to use. The DBF file is then created in a specific location. The user may also specify a path in which the DBF file should be created.

How do I move or rename a datafile in Oracle?

To move or rename a datafile do the following. Shutdown the database. Rename the physical file on the OS. Start the database in mount mode. Issue the ALTER DATABASE RENAME FILE command to rename the file within the Oracle dictionary. Open the database. The following SQL*Plus output shows how this is done. SQL> SHUTDOWN IMMEDIATE Database closed.

How to change the location of a database file?

Your old location is the location where currently datafiles exist and your new location is where they should be. e.g. The easiest way is to create control file script, shutdown your database, move database file to your desired location, change your control file script with location and create control file.

How do I change the name of an Oracle Database?

Manual (Offline) 1 Shutdown the database. 2 Rename the physical file on the OS. 3 Start the database in mount mode. 4 Issue the ALTER DATABASE RENAME FILE command to rename the file within the Oracle dictionary. 5 Open the database.