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How do I move Datafile from one tablespace to another in Oracle?

Author

Sarah Oconnell

Published Feb 19, 2026

How do I move Datafile from one tablespace 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.

Hereof, how do I move datafile to another tablespace?

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.

Secondly, how do I move a table from one tablespace to another tablespace?

  1. SELECT 'ALTER TABLE <SCHEMA>.' || TABLE_NAME ||' MOVE TABLESPACE '||' <TABLESPACE_NAME> ' FROM dba_tables WHERE OWNER = '<SCHEMA>' AND TABLESPACE_NAME <> '<TABLESPACE_NAME>'; filter's tables already in desired tablespace – Barun Feb 22 '16 at 4:45.
  2. First query in the answer should be replaced with Barun`s query. –

Considering this, 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 move Datafile online in 19c?

Executed the command with the name obtain from query. ALTER DATABASE MOVE DATAFILE '/opt/oracle/product/19c/dbhome_1/dbs/ARPA_DATOS_F1.dbf' TO '/opt/oracle/oradata/ORCLCDB/ORCLPDB1/ARPA_DATOS_F1. dbf';

How do I move Datafile from one Diskgroup to another?

Answer: Moving data files from one ASM diskgroup to another diskgroup involves these steps:
  1. Step 1: Get the data file name: select. file_name. from.
  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'

How do I move control from one folder to another?

Here are the steps to change the location of control file for a single-instance database by a parameter file:
  1. Stop Database Service.
  2. Copy Control File to New Location.
  3. Create PFILE from Current SPFILE.
  4. Modify Control File Location in PFILE.
  5. Restore SPFILE from Modified PFILE.
  6. Startup NOMOUNT to Check New Setting.

How do I move Datafile to ASM?

While the database is shutdown (in mount stage)
  1. Shutdown and mount the database.
  2. Ensure you have enough space in the ASM diskgroup to copy the datafile.
  3. Connect to RMAN and copy the datafile from the filesystem to the select ASM diskgroup.
  4. Update the controlfile with the new location of the datafile.

What is Dba_data_files?

DBA_DATA_FILES describes database files. The size of the file available for user data. The actual size of the file minus the USER_BYTES value is used to store file related metadata.

How do I rename temp files?

Renaming or moving tempfile in oracle(ASM/Non-ASM)

1) sqplus to the database and make sure the Tempfiles that you want to rename or change the location. SQL> select name from v$tempfile; 2) create a pfile before making the changes. 3) shutdown the database.

How do I rename or move tablespace datafile in Oracle?

Rename and/or move datafile(s) with the database shutdown
  1. If the database is up, shut it down.
  2. Copy the datafile to the new name/location at the operating system level.
  3. Mount the database.
  4. Rename the file inside Oracle.
  5. Open the database.
  6. Query v$dbfile to confirm that the changes made were correct.

Where are Oracle datafiles stored?

Most Oracle databases store files in a file system, which is a data structure built inside a contiguous disk address space. All operating systems have file managers that allocate and deallocate disk space into files within a file system. A file system enables disk space to be allocated to many files.

How do I move the redo log in Oracle 12c?

  1. Shut down the database. SHUTDOWN.
  2. Copy the redo log files to the new location. Operating system files, such as redo log members, must be copied using the appropriate operating system commands.
  3. Startup the database, mount, but do not open it.
  4. Rename the redo log members.
  5. Open the database for normal operation.

How do I read a control file?

Answer: To see the controlfile contents, use these steps: SQL> alter database backup controlfile to trace; We can now view the controlfile contents (as a "create database" statement) by looking for the latest file in the user_dump_dest directory.

How do I change Dbid and Dbname using NID?

How to change the oracle database name using nid utility
  1. Mount the database. SQL> STARTUP MOUNT ORACLE instance started.
  2. Run the NID utility. SYNTAX – nid sys/password@CURRENT_DBNAME DBNAME=NEW_DBNAME.
  3. change the db_name parameter in the parameter file.
  4. Rename the spfile to new db name.

What does switch datafile all do?

Switches all data files within the specified tablespace, as with SWITCH DATAFILE TO COPY (see Example 3-55). Switches the specified active database files to image copies. This subclause updates the names for data files and temp files for which you have issued a SET NEWNAME command.

Can I change the archive log destination while the database is running?

Temporarily Changing the Destination Using SQL*Plus

If you are automatically archiving, you can use the following command to override the destination specified by the LOG_ARCHIVE_DEST. This command does not change the value in the initialization parameter file. This change is only valid until you restart the instance.

How do I change the Maxsize of a datafile in Oracle?

Are you talking about the automatic extension of data files? In that case the command you need will be similar to this: alter database datafile 'filename' autoextend on next 512K maxsize 11G; See the section Enabling and Disabling Automatic Extension for a Data File of the Oracle 12.1 Database Administrator's Guide.

What is the use of Standby_file_management?

STANDBY_FILE_MANAGEMENT enables or disables automatic standby file management. When automatic standby file management is enabled, operating system file additions and deletions on the primary database are replicated on the standby 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 a table in the same tablespace in Oracle?

There are 2 methods we can use to do this. One is to use a combination of "alter table X move tablespace Y" and "alter index X rebuild tablespace Y" -- this works in Oracle8i release 8.1 and up ONLY. Attached is a script called moveall.

How do I reclaim a space in Oracle?

Here are the high-level steps that will be performed.
  1. Create an ASM Disk Group using the ASM Filter Driver.
  2. Create a tablespace in this diskgroup and populate it with some random data.
  3. Check the space allocated at the database and array level.
  4. Drop the tablespace and run ASM rebalance.
  5. Check the space again.

How do I move a subpartition to another tablespace?

The ALTER TABLE… MOVE PARTITION command moves a partition or subpartition from its current tablespace to a different tablespace. The ALTER TABLE… MOVE PARTITION command can move partitions (or subpartitions) of a LIST, RANGE or HASH partitioned (or subpartitioned) table.

How do I move a table from one tablespace to another in Oracle 12c?

SALIH MOVE TABLESPACE NEW_TABLESPACE_NAME; You can move lots of tables to the new tablespace with using generate move scripts. select 'ALTER TABLE '||owner||'. '||table_name||' move tablespace '||'NEW_TBS_NAME;' from dba_tables where tablespace_name='PMDB_DAT1';

How do you move a table with a lob column?

Moving oracle tables with lob columns to another tablespace
  1. Move table.
  2. Rebuild indexes (and move them to the new tablespace if you wish so)
  3. Move the lob segment.
  4. Enable row movement.
  5. Shrink the table and lob segment.

How do I change tablespace?

To alter the SYSAUX tablespace, you must have the SYSDBA system privilege. If you have ALTER TABLESPACE system privilege, then you can perform any ALTER TABLESPACE operation.

ALTER TABLESPACE

  1. Take the tablespace online or offline.
  2. Begin or end a backup.
  3. Make the tablespace read only or read write.

What is Alter Table move in Oracle?

Alter table move - The alter table xxx move command moves rows down into un-used space and adjusts the HWM but does not adjust the segments extents, and the table size remains the same. The alter table move syntax also preserves the index and constraint definitions.

What is a tablespace in Oracle?

An Oracle database consists of one or more logical storage units called tablespaces, which collectively store all of the database's data. Each tablespace in an Oracle database consists of one or more files called datafiles, which are physical structures that conform to the operating system in which Oracle is running.

How do I change the control name in Oracle database?

DBID And DBNAME
  1. Backup the database.
  2. Mount the database after a clean shutdown.
  3. Invoke the DBNEWID utility (nid) specifying the new DBNAME from the command line using a user with SYSDBA privilege.
  4. Shutdown the database.
  5. Modify the DB_NAME parameter in the initialization parameter file.
  6. Create a new password file.

How do I edit a datafile Autoextend?

Setting a file in a tablespace to autoextend is a fairly easy task as long as the user performing the actions has DBA or SYSDBA privileges: SQL> alter database datafile '/whackenhut/smackdoodle/endoplasm/flurst01. dbf' autoextend on maxsize 2000M; Database altered.

What is Log_file_name_convert?

LOG_FILE_NAME_CONVERT converts the filename of a new log file on the primary database to the filename of a log file on the standby database. The file must exist on the standby database and must be writable or the recovery process will halt with an error.

How do I know if tablespace is online or offline?

Check status of tablespace offline or online in Oracle

Check the tablespace status is offline or online. SELECT TABLESPACE_NAME,STATUS FROM DBA_TABLESPACES; Take the tablespace offline.

How do I rename a datafile in standby database?

If you want to rename a data file on a standby database, you need to do it manually:
  1. Cancel the Data Guard recovery (set dg_broker_start to false and restart the database in mount status if you use data guard).
  2. Set the standby file management to manual alter system set standby_file_management=manual.

What is Db_file_name_convert parameter?

DB_FILE_NAME_CONVERT is useful for creating a duplicate database for recovery purposes. When the standby database is updated, this parameter converts the datafile name on the primary database to the datafile name on the standby database.

How do you create a control file?

Steps for Creating New Control Files
  1. Make a list of all datafiles and redo log files of the database.
  2. Shut down the database.
  3. Back up all datafiles and redo log files of the database.
  4. Start up a new instance, but do not mount or open the database: STARTUP NOMOUNT.

How do I rename a datafile in ASM?

There is no way to rename a system generated ASM filename. Once a user-created-alias is added in the diskgroup, then you can use “rename alias” to rename the filename within ASM.

How do you rename an existing column in a table in Oracle?

To rename a column in oracle we have to use rename column statement. You have to use rename column statement along with alter table statement. The RENAME COLUMN statement allows us to rename an existing column in an existing table in any schema (except the schema SYS).

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