RMAN: Recover A Dropped Tablespace Using TSPITR (11gR2)

RMAN automatic Tablespace Point-In-Time Recovery ( TSPITR) enables you to quickly recover one or more tablespaces in an Oracle database to an earlier time, without affecting the state of the rest of the tablespaces and other objects in the database.

Prior to 11.2 version the tspitr had a restriction of not being able to recover the dropped tablesapace.From 11.2 this limitation no longer exists.We can recover the dropped tablespace using TSPITR.

Assumption
CONTROLFILE AUTOBACKUP has been turned on and Flashback has been enabled for the database

Example:
1) Create a tablespace.
SQL> create tablespace ts1 datafile 'C:\app\Inam\oradata\orcl\ts01.dbf' size 10m reuse;

2) Create a user and create a table in the new tablespace
SQL>create user ali identified by ali;
SQL>grant dba to ali;
SQL>conn ali/ali
SQL> create table objects tablespace ts1 as select * from dba_objects ;

3) Make a note of the current log sequence number.
SQL> select sequence# from v$log where status='CURRENT';
SEQUENCE#
----------
1

4) Take a backup of the database and the archivelogs.
rman target /
RMAN> backup database plus archivelog;

5) Now login to the database and just perform a few log switches and then drop the tablespace.
SQL> alter system switch logfile;
SQL> alter system switch logfile;
SQL> select sequence# from v$log where status='CURRENT';
SEQUENCE#
----------
5

SQL> drop tablespace ts1 including contents and datafiles;

Tablespace dropped.

6) Now note down the current log sequence number in the database.
SQL> select SEQUENCE# from v$log where status='CURRENT';
SEQUENCE#
----------
5

7) The log sequence number in the database when the tablespace was dropped is 5. So if we recover upto sequence 4 then we will be able to get the tablespace back.

RMAN> recover tablespace ts1 until logseq 4 auxiliary destination 'd:\';
+++++++++
RMAN> recover tablespace ts1 until logseq 4 auxiliary destination 'd:\'; C:\Windows\system32>rman target / Recovery Manager: Release 11.2.0.3.0 - Production on Sun Feb 24 10:21:59 2013 Copyright (c) 1982, 2011, Oracle and/or its affiliates. All rights reserved. connected to target database: ORCL (DBID=1335926989) RMAN> recover tablespace ts1 until logseq 4 auxiliary destination 'd:\'; Starting recover at 24-FEB-13 using target database control file instead of recovery catalog allocated channel: ORA_DISK_1 channel ORA_DISK_1: SID=35 device type=DISK RMAN-05026: WARNING: presuming following set of tablespaces applies to specified point-in-time List of tablespaces expected to have UNDO segments Tablespace SYSTEM Tablespace UNDOTBS1 Creating automatic instance, with SID='nbwp' initialization parameters used for automatic instance: db_name=ORCL db_unique_name=nbwp_tspitr_ORCL compatible=11.2.0.0.0 db_block_size=8192 db_files=200 sga_target=280M processes=50 db_create_file_dest=d:\ log_archive_dest_1='location=d:\' #No auxiliary parameter file used starting up automatic instance ORCL Oracle instance started Total System Global Area 292278272 bytes Fixed Size 2254584 bytes Variable Size 100665608 bytes Database Buffers 184549376 bytes Redo Buffers 4808704 bytes Automatic instance created List of tablespaces that have been dropped from the target database: Tablespace ts1 contents of Memory Script: { # set requested point in time set until logseq 4 thread 1; # restore the controlfile restore clone controlfile; # mount the controlfile sql clone 'alter database mount clone database'; # archive current online log sql 'alter system archive log current'; # avoid unnecessary autobackups for structural changes during TSPITR sql 'begin dbms_backup_restore.AutoBackupFlag(FALSE); end;'; } executing Memory Script executing command: SET until clause Starting restore at 24-FEB-13 allocated channel: ORA_AUX_DISK_1 channel ORA_AUX_DISK_1: SID=42 device type=DISK channel ORA_AUX_DISK_1: starting datafile backup set restore channel ORA_AUX_DISK_1: restoring control file channel ORA_AUX_DISK_1: reading from backup piece C:\APP\INAM\FAST_RECOVERY_AREA \ORCL\AUTOBACKUP\2013_02_24\O1_MF_S_808214344_8LM7JSDB_.BKP channel ORA_AUX_DISK_1: piece handle=C:\APP\INAM\FAST_RECOVERY_AREA\ORCL\AUTOBAC KUP\2013_02_24\O1_MF_S_808214344_8LM7JSDB_.BKP tag=TAG20130224T075904 channel ORA_AUX_DISK_1: restored backup piece 1 channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:00:01 output file name=D:\ORCL\CONTROLFILE\O1_MF_8LMJ0QHO_.CTL Finished restore at 24-FEB-13 sql statement: alter database mount clone database sql statement: alter system archive log current sql statement: begin dbms_backup_restore.AutoBackupFlag(FALSE); end; contents of Memory Script: { # set requested point in time set until logseq 4 thread 1; # set destinations for recovery set and auxiliary set datafiles set newname for clone datafile 1 to new; set newname for clone datafile 3 to new; set newname for clone datafile 2 to new; set newname for clone tempfile 1 to new; set newname for datafile 6 to "C:\APP\INAM\ORADATA\ORCL\TS01.DBF"; # switch all tempfiles switch clone tempfile all; # restore the tablespaces in the recovery set and the auxiliary set restore clone datafile 1, 3, 2, 6; switch clone datafile all; } executing Memory Script executing command: SET until clause executing command: SET NEWNAME executing command: SET NEWNAME executing command: SET NEWNAME executing command: SET NEWNAME executing command: SET NEWNAME renamed tempfile 1 to D:\ORCL\DATAFILE\O1_MF_TEMP_%U_.TMP in control file Starting restore at 24-FEB-13 using channel ORA_AUX_DISK_1 channel ORA_AUX_DISK_1: starting datafile backup set restore channel ORA_AUX_DISK_1: specifying datafile(s) to restore from backup set channel ORA_AUX_DISK_1: restoring datafile 00001 to D:\ORCL\DATAFILE\O1_MF_SYSTE M_%U_.DBF channel ORA_AUX_DISK_1: restoring datafile 00003 to D:\ORCL\DATAFILE\O1_MF_UNDOT BS1_%U_.DBF channel ORA_AUX_DISK_1: restoring datafile 00002 to D:\ORCL\DATAFILE\O1_MF_SYSAU X_%U_.DBF channel ORA_AUX_DISK_1: restoring datafile 00006 to C:\APP\INAM\ORADATA\ORCL\TS0 1.DBF channel ORA_AUX_DISK_1: reading from backup piece C:\APP\INAM\FAST_RECOVERY_AREA \ORCL\BACKUPSET\2013_02_24\O1_MF_NNNDF_TAG20130224T075816_8LM7HB2Q_.BKP channel ORA_AUX_DISK_1: piece handle=C:\APP\INAM\FAST_RECOVERY_AREA\ORCL\BACKUPS ET\2013_02_24\O1_MF_NNNDF_TAG20130224T075816_8LM7HB2Q_.BKP tag=TAG20130224T07581 6 channel ORA_AUX_DISK_1: restored backup piece 1 channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:00:55 Finished restore at 24-FEB-13 datafile 1 switched to datafile copy input datafile copy RECID=5 STAMP=808223113 file name=D:\ORCL\DATAFILE\O1_MF_SYS TEM_8LMJ11WY_.DBF datafile 3 switched to datafile copy input datafile copy RECID=6 STAMP=808223113 file name=D:\ORCL\DATAFILE\O1_MF_UND OTBS1_8LMJ120Y_.DBF datafile 2 switched to datafile copy input datafile copy RECID=7 STAMP=808223113 file name=D:\ORCL\DATAFILE\O1_MF_SYS AUX_8LMJ11XW_.DBF contents of Memory Script: { # set requested point in time set until logseq 4 thread 1; # online the datafiles restored or switched sql clone "alter database datafile 1 online"; sql clone "alter database datafile 3 online"; sql clone "alter database datafile 2 online"; sql clone "alter database datafile 6 online"; # recover and open resetlogs recover clone database tablespace "TS1", "SYSTEM", "UNDOTBS1", "SYSAUX" delete archivelog; alter clone database open resetlogs; } executing Memory Script executing command: SET until clause sql statement: alter database datafile 1 online sql statement: alter database datafile 3 online sql statement: alter database datafile 2 online sql statement: alter database datafile 6 online Starting recover at 24-FEB-13 using channel ORA_AUX_DISK_1 starting media recovery archived log for thread 1 with sequence 2 is already on disk as file C:\APP\INAM \FAST_RECOVERY_AREA\ORCL\ARCHIVELOG\2013_02_24\O1_MF_1_2_8LM7JPGN_.ARC archived log for thread 1 with sequence 3 is already on disk as file C:\APP\INAM \FAST_RECOVERY_AREA\ORCL\ARCHIVELOG\2013_02_24\O1_MF_1_3_8LMHJ7BN_.ARC archived log file name=C:\APP\INAM\FAST_RECOVERY_AREA\ORCL\ARCHIVELOG\2013_02_24 \O1_MF_1_2_8LM7JPGN_.ARC thread=1 sequence=2 archived log file name=C:\APP\INAM\FAST_RECOVERY_AREA\ORCL\ARCHIVELOG\2013_02_24 \O1_MF_1_3_8LMHJ7BN_.ARC thread=1 sequence=3 media recovery complete, elapsed time: 00:00:08 Finished recover at 24-FEB-13 database opened contents of Memory Script: { # make read only the tablespace that will be exported sql clone 'alter tablespace TS1 read only'; # create directory for datapump import sql "create or replace directory TSPITR_DIROBJ_DPDIR as '' d:\''"; # create directory for datapump export sql clone "create or replace directory TSPITR_DIROBJ_DPDIR as '' d:\''"; } executing Memory Script sql statement: alter tablespace TS1 read only sql statement: create or replace directory TSPITR_DIROBJ_DPDIR as ''d:\'' sql statement: create or replace directory TSPITR_DIROBJ_DPDIR as ''d:\'' Performing export of metadata... EXPDP> Starting "SYS"."TSPITR_EXP_nbwp": EXPDP> Processing object type TRANSPORTABLE_EXPORT/PLUGTS_BLK EXPDP> Processing object type TRANSPORTABLE_EXPORT/TABLE EXPDP> Processing object type TRANSPORTABLE_EXPORT/TABLE_STATISTICS EXPDP> Processing object type TRANSPORTABLE_EXPORT/POST_INSTANCE/PLUGTS_BLK EXPDP> Master table "SYS"."TSPITR_EXP_nbwp" successfully loaded/unloaded EXPDP> ********************************************************************** ******** EXPDP> Dump file set for SYS.TSPITR_EXP_nbwp is: EXPDP> D:\TSPITR_NBWP_81994.DMP EXPDP> ********************************************************************** ******** EXPDP> Datafiles required for transportable tablespace TS1: EXPDP> C:\APP\INAM\ORADATA\ORCL\TS01.DBF EXPDP> Job "SYS"."TSPITR_EXP_nbwp" successfully completed at 10:26:36 Export completed contents of Memory Script: { # shutdown clone before import shutdown clone immediate } executing Memory Script database closed database dismounted Oracle instance shut down Performing import of metadata... IMPDP> Master table "SYS"."TSPITR_IMP_nbwp" successfully loaded/unloaded IMPDP> Starting "SYS"."TSPITR_IMP_nbwp": IMPDP> Processing object type TRANSPORTABLE_EXPORT/PLUGTS_BLK IMPDP> Processing object type TRANSPORTABLE_EXPORT/TABLE IMPDP> Processing object type TRANSPORTABLE_EXPORT/TABLE_STATISTICS IMPDP> Processing object type TRANSPORTABLE_EXPORT/POST_INSTANCE/PLUGTS_BLK IMPDP> Job "SYS"."TSPITR_IMP_nbwp" successfully completed at 10:27:01 Import completed contents of Memory Script: { # make read write and offline the imported tablespaces sql 'alter tablespace TS1 read write'; sql 'alter tablespace TS1 offline'; # enable autobackups after TSPITR is finished sql 'begin dbms_backup_restore.AutoBackupFlag(TRUE); end;'; } executing Memory Script sql statement: alter tablespace TS1 read write sql statement: alter tablespace TS1 offline sql statement: begin dbms_backup_restore.AutoBackupFlag(TRUE); end; Removing automatic instance Automatic instance removed auxiliary instance file D:\ORCL\DATAFILE\O1_MF_TEMP_8LMJ3B3L_.TMP deleted auxiliary instance file D:\ORCL\ONLINELOG\O1_MF_3_8LMJ37V5_.LOG deleted auxiliary instance file D:\ORCL\ONLINELOG\O1_MF_2_8LMJ3628_.LOG deleted auxiliary instance file D:\ORCL\ONLINELOG\O1_MF_1_8LMJ348G_.LOG deleted auxiliary instance file D:\ORCL\DATAFILE\O1_MF_SYSAUX_8LMJ11XW_.DBF deleted auxiliary instance file D:\ORCL\DATAFILE\O1_MF_UNDOTBS1_8LMJ120Y_.DBF deleted auxiliary instance file D:\ORCL\DATAFILE\O1_MF_SYSTEM_8LMJ11WY_.DBF deleted auxiliary instance file D:\ORCL\CONTROLFILE\O1_MF_8LMJ0QHO_.CTL deleted Finished recover at 24-FEB-13

8) Here rman users transportable tablespace mechanism to plug the dropped tablespace back in to the database.
SQL> select tablespace_name,status,plugged_in from dba_tablespaces;

TABLESPACE_NAME STATUS PLU
------------------------------ --------- ---
SYSTEM ONLINE NO
SYSAUX ONLINE NO
UNDOTBS1 ONLINE NO
TEMP ONLINE NO
USERS OFFLINE NO
EXAMPLE ONLINE YES
TS1 OFFLINE YES

7 rows selected.

9) Online the tablespace.
SQL> alter tablespace ts1 online;

Tablespace altered.

10) Check for the data.
SQL> conn ali/ali
Connected.
SQL> select count(*) from objects;
COUNT(*)
----------
75206

Ref: 1277795.1