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How do I move datafiles?

Posted on by Arif Clayton

How do I move datafiles?

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.

Where is datafile for temp tablespace in Oracle?

select TABLESPACE_NAME “TEMP TBS NAME”,bytes/(1024*1024) “SIZE(MBs)”,BYTES_USED/(1024*1024) “BYTES USED(MBs)”,BYTES_FREE/(1024*1024) “BYTES FREE(MBs)” from sys. V_$TEMP_SPACE_HEADER,v$tempfile; From 11g, we can check free temporary space in new view DBA_TEMP_FREE_SPACE.

How do I drop temp files in Oracle?

Dropping Datafiles. You use the DROP DATAFILE and DROP TEMPFILE clauses of the ALTER TABLESPACE command to drop a single datafile or tempfile. The datafile must be empty. (A datafile is considered to be empty when no extents remain allocated from it.)

How do I resize a temp file?

Tempfile resize

  1. Create another temp Tablespace=0D.
  2. Make this as the default temp Tablespace for the database=0D.
  3. Move all the current users to this Tablespace=0D.
  4. Drop the original TEMP Tablespace and recreate it and then move all.

How do I extend temp tablespace?

You must use the CREATE TEMPORARY TABLESPACE statement to create a locally managed temporary tablespace. You can use ALTER TABLESPACE to add a tempfile, take a tempfile offline, or bring a tempfile online, as illustrated in the following examples: ALTER TABLESPACE lmtemp ADD TEMPFILE ‘/u02/oracle/data/lmtemp02.

How do I move datafiles from one drive 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 move datafile from filesystem to ASM in Oracle 19c?

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.

How do I change temp tablespace?

How do I drop a temp tablespace datafile?

  1. Create Temporary Tablespace TempNew.
  2. Make the default tablespace to TemNew.
  3. Drop temp tablespace TEMP.
  4. Step 4.Recreate Tablespace Temp.
  5. Step 5.Make the default tablespace to Temp.
  6. Step 6.Drop temporary tablespace TempNew SQL> DROP TABLESPACE TempNew INCLUDING CONTENTS AND DATAFILES; Tablespace dropped.

How do I reduce temp tablespace?

If the temporary tablespace you want to shrink is your default temporary tablespace, you will have to first create a new temporary tablespace, set it as the default temporary tablespace then drop your old default temporary tablespace and recreate it. Afterwords drop the second temporary table created.

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