What is tablespace point in time recovery?

RMAN TSPITR(Recovery Manager Tablespace Point In Time Recovery) enables quick recovery of one or more tablespaces in a database to an earlier time without affecting the rest of the tablespaces and objects in the database.

How do I restore a tablespace backup?

Restore a Single Tablespace Using RMAN

  1. Take the tablespace offline: alter tablespace offline;
  2. Issue the restore command from an RMAN prompt.
  3. After the restore is completed, a “Recover” needs to be issued.
  4. Finally, the tablespace can be brought back online.

What is auxiliary destination?

The auxiliary destination, an optional location on disk which can be used to store any of the auxiliary set datafiles, control files and online logs of the auxiliary instance during TSPITR. Files stored here can be deleted after TSPITR is complete.

How do I find default undo tablespace?

sql> alter system set undo_tablespace = undotbs2 scope=both; 5. Check the status of the undo segments and determine if all the segments in the old undo tablespace are offline.

Which RMAN command is used to execute tablespace points in time recovery?

As TSPITR is performed while the database is open, RMAN takes the tablespace that is recovering offline. It then restores the control file from backup of the target database to the auxiliary instance according to the time/scn value specified in the UNTIL clause of the command.

How do I restore my Rman drop tablespace?

RMAN Restoring Dropped Tablespace Using Flashback Database

  1. create. tablespace tbs datafile ‘/tmp/tbs. dbf’ size 1m; Tablespace created.
  2. create. index idx_tbs. on. tbs(id) tablespace users;
  3. conn / as. sysdba. Connected. SQL>
  4. alter. database open resetlogs; Database altered. SQL>
  5. select. oldest_flashback_scn, to_char.

What is point intime recovery in Oracle?

Database point-in-time recovery (DBPITR) restores the database from backups prior to the target time for recovery, then uses incremental backups and redo to roll the database forward to the target time.

How do I backup a tablespace in Oracle?

Backing Up Online Tablespaces Serially

  1. Prepare a tablespace for online backup.
  2. Back up the datafiles in the tablespace.
  3. Take the tablespace out of backup mode.
  4. Repeat this procedure for each remaining tablespace.
  5. Archive the unarchived redo logs so that the redo required to recover the tablespace backups is archived.

What is auxiliary instance in Oracle?

AUXILIARY DATABASE – An Auxiliary Database is a standby database that will be created as a result of the duplication of the target database. In RMAN’s terminology, Auxiliary instance identifies an instance which RMAN connects in order to execute the duplicate command.

How do I restore my RMAN drop tablespace?

How do I check undo tablespace utilization details?

Check the Undo tablespace Usage in Oracle

  1. Check the undo tablespace total, free and used space(Size in MB) in Oracle. SELECT a.tablespace_name,
  2. Check the Active, expired and unexpired transaction space usage in Undo Tablespace.
  3. Check undo usage by User or schema.

How big should undo tablespace be?

The Undo Advisor shows its recommendation that the undo tablespace size should be at least 20 MB for this undo retention time of 3884 seconds.