General
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Example of moving Datafile from Location A to Location B
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Example
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Steps
Check Database Archive Mode
SQL> SELECT log_mode FROM V$DATABASE;
LOG_MODE
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ARCHIVELOG
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Database is in ARCHIVELOG mode
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- Take the datafile offline.
ALTER DATABASE DATAFILE '/old/datafile/location/datafile_01.dbf' OFFLINE;
SQL>Database Altered
- Copy or move the datafile to its new location.
dd if=/old/location/datafile_01.dbf of=new/location/datafile_01.dbf bs='4096
or
cp -p /old/location/datafile_01.dbf /new/location/datafile_01.dbf
- Point Database to the new datafile location.
ALTER DATABASE RENAME FILE '/old/location/datafile_01.dbf' TO 'new/location/datafile_01.dbf';
SQL>Database altered.
- Recover new datafile.
RECOVER DATAFILE '/new/location/datafile_01.dbf';
SQL>Media recovery complete.
- Bring Datafile Online.
ALTER DATABASE DATAFILE 'new/location/datafile_01.dbf' ONLINE;
SQL>Database altered.
Delete datafile from old location
rm -f /old/location/datafile_01.dbf
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Database is in NOARCHIVELOG mode
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- Shutdown the database
SHUTDOWN IMMEDIATE;
dd if=/old/location/datafile_01.dbf of=new/location/datafile_01.dbf bs=4096
or
cp -p /old/location/datafile_01.dbf /new/location/datafile_01.dbf
STARTUP MOUNT;
- Rename the file:
ALTER DATABASE RENAME FILE '/old/location/datafile_01.dbf' TO '/new/location/datafile_01.dbf';
-Open The Database
ALTER DATABASE OPEN;
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