This is new feature for Oracle 11g R2.Here I’m go to demonstrate How to recover dropped Tablespace using RMAN Tablespace point in time recovery.
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Step 1: Create Tablespace
SQL> conn / as sysdba
Connected.
SQL> create tablespace testtbs datafile 'd:\backup\testtbs01.dbf' size 100m;
Tablespace created.
SQL> create user testtbs identified by testtbs default tablespace testtbs;
User created.
SQL> grant connect,resource to testtbs;
Grant succeeded.
SQL> conn testtbs/testtbs;
Connected.
SQL> create table test(empname varchar2(20),city varchar2(20));
Table created.
SQL> insert into test values('azar','riyadh');
1 row created.
SQL> insert into test values('jabar','chennai');
1 row created.
SQL> commit;
Commit complete.
SQL> conn testdb/testdb;
Connected.
(Note : This table allocated for other tablespace , i just insert data for this table for check data consistent after doing TBPITR)
SQL> create table d(empname varchar2(20));
Table created.
SQL> insert into d values('kareem');
1 row created.
SQL> insert into d values('syed');
1 row created.
SQL> commit;
Commit complete.
Step 2: Backup database Plus archivelog
C:\Users\mazar>set oracle_sid=azardb
C:\Users\mazar>rman target sys/Admin123
Recovery Manager: Release 11.2.0.1.0 - Production on Sat Jan 1 15:39:34 2011
Copyright (c) 1982, 2009, Oracle and/or its affiliates. All rights reserved.
connected to target database: AZARDB (DBID=1652383192)
RMAN> backup database plus archivelog;
Starting backup at 01-JAN-11
current log archived
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=30 device type=DISK
Step 3: Note Current SCN
SQL> conn / as sysdba
Connected.
SQL> select current_scn from v$database;
CURRENT_SCN
-----------
8448197
Step 4: Drop tablespace
SQL> drop tablespace testtbs including contents and datafiles;
Tablespace dropped.
Step 5: I just added data for another table allocated for other tablespace due to just check for data consistent.
SQL> conn testdb/testdb;
Connected.
SQL> insert into d values('azmi');
1 row created.
SQL> commit;
Commit complete.
Step 6: Create auxiliary & Recover tablespace using tablespace point in time recovery.
C:\Windows\system32>rman target sys/Admin123
Recovery Manager: Release 11.2.0.1.0 - Production on Sat Jan 1 14:45:08 2011
Copyright (c) 1982, 2009, Oracle and/or its affiliates. All rights reserved.
connected to target database: AZARDB (DBID=1652383192)
RMAN> run{
2> recover tablespace testtbs
3> until scn 8448197
4> auxiliary destination 'D:\backupnew';
5> }
executing command: SET NEWNAME
Starting recover at 01-JAN-11
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=31 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 UNDOTBS2
Creating automatic instance, with SID='Bopd'
initialization parameters used for automatic instance:
db_name=AZARDB
db_unique_name=Bopd_tspitr_AZARDB
compatible=11.2.0.0.0
db_block_size=8192
db_files=200
sga_target=280M
processes=50
db_create_file_dest=D:\backupnew
log_archive_dest_1='location=D:\backupnew'
#No auxiliary parameter file used
starting up automatic instance AZARDB
Oracle instance started
Total System Global Area 292933632 bytes
Fixed Size 1374164 bytes
Variable Size 100665388 bytes
Database Buffers 184549376 bytes
Redo Buffers 6344704 bytes
Automatic instance created
List of tablespaces that have been dropped from the target database:
Tablespace testtbs
contents of Memory Script:
{
# set requested point in time
set until scn 8448197;
# 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 01-JAN-11
allocated channel: ORA_AUX_DISK_1
channel ORA_AUX_DISK_1: SID=59 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\ORACLE\MAZAR\FLASH_RECOVERY_AREA\AZARDB\AUTOBACKUP\2011_01_01\O1_MF_N_739286122_6KXZOWTT_.BKP
channel ORA_AUX_DISK_1: piece handle=C:\APP\ORACLE\MAZAR\FLASH_RECOVERY_AREA\AZARDB\AUTOBACKUP\2011_01_01\O1_MF_N_739286122_6KXZOWTT_.BKP tag=TAG20110101T13152
1
channel ORA_AUX_DISK_1: restored backup piece 1
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:01:00
output file name=D:\BACKUPNEW\AZARDB\CONTROLFILE\O1_MF_6KY50OH2_.CTL
Finished restore at 01-JAN-11
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 scn 8448197;
# set destinations for recovery set and auxiliary set datafiles
set newname for clone datafile 1 to new;
set newname for clone datafile 8 to new;
set newname for clone datafile 2 to new;
set newname for clone tempfile 1 to new;
set newname for datafile 3 to
"D:\BACKUP\TESTTBS01.DBF";
# switch all tempfiles
switch clone tempfile all;
# restore the tablespaces in the recovery set and the auxiliary set
restore clone datafile 1, 8, 2, 3;
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:\BACKUPNEW\AZARDB\DATAFILE\O1_MF_TEMP_%U_.TMP in control file
Starting restore at 01-JAN-11
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:\BACKUPNEW\AZARDB\DATAFILE\O1_MF_SYSTEM_%U_.DBF
channel ORA_AUX_DISK_1: restoring datafile 00008 to D:\BACKUPNEW\AZARDB\DATAFILE\O1_MF_UNDOTBS2_%U_.DBF
channel ORA_AUX_DISK_1: restoring datafile 00002 to D:\BACKUPNEW\AZARDB\DATAFILE\O1_MF_SYSAUX_%U_.DBF
channel ORA_AUX_DISK_1: restoring datafile 00003 to D:\BACKUP\TESTTBS01.DBF
channel ORA_AUX_DISK_1: reading from backup piece C:\APP\ORACLE\MAZAR\FLASH_RECOVERY_AREA\AZARDB\BACKUPSET\2011_01_01\O1_MF_NNNDF_TAG20110101T131020_6KXZDFVB_.
BKP
channel ORA_AUX_DISK_1: restored backup piece 1
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:03:06
Finished restore at 01-JAN-11
datafile 1 switched to datafile copy
input datafile copy RECID=388 STAMP=739291881 file name=D:\BACKUPNEW\AZARDB\DATAFILE\O1_MF_SYSTEM_6KY53Y6C_.DBF
datafile 8 switched to datafile copy
input datafile copy RECID=389 STAMP=739291881 file name=D:\BACKUPNEW\AZARDB\DATAFILE\O1_MF_UNDOTBS2_6KY53YJT_.DBF
datafile 2 switched to datafile copy
input datafile copy RECID=390 STAMP=739291881 file name=D:\BACKUPNEW\AZARDB\DATAFILE\O1_MF_SYSAUX_6KY53YG4_.DBF
contents of Memory Script:
{
# set requested point in time
set until scn 8448197;
# online the datafiles restored or switched
sql clone "alter database datafile 1 online";
sql clone "alter database datafile 8 online";
sql clone "alter database datafile 2 online";
sql clone "alter database datafile 3 online";
# recover and open resetlogs
recover clone database tablespace "TESTTBS", "SYSTEM", "UNDOTBS2", "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 8 online
sql statement: alter database datafile 2 online
sql statement: alter database datafile 3 online
Starting recover at 01-JAN-11
using channel ORA_AUX_DISK_1
starting media recovery
archived log for thread 1 with sequence 17 is already on disk as file C:\APP\ORACLE\MAZAR\FLASH_RECOVERY_AREA\AZARDB\ARCHIVELOG\2011_01_01\O1_MF_1_17_6KY53B3J_
.ARC
channel ORA_AUX_DISK_1: starting archived log restore to default destination
channel ORA_AUX_DISK_1: restoring archived log
archived log thread=1 sequence=16
channel ORA_AUX_DISK_1: reading from backup piece C:\APP\ORACLE\MAZAR\FLASH_RECOVERY_AREA\AZARDB\BACKUPSET\2011_01_01\O1_MF_ANNNN_TAG20110101T131514_6KXZOPGN_.
BKP
channel ORA_AUX_DISK_1: piece handle=C:\APP\ORACLE\MAZAR\FLASH_RECOVERY_AREA\AZARDB\BACKUPSET\2011_01_01\O1_MF_ANNNN_TAG20110101T131514_6KXZOPGN_.BKP tag=TAG20
110101T131514
channel ORA_AUX_DISK_1: restored backup piece 1
channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:00:01
archived log file name=D:\BACKUPNEW\ARC0000000016_0738861267.0001 thread=1 sequence=16
channel clone_default: deleting archived log(s)
archived log file name=D:\BACKUPNEW\ARC0000000016_0738861267.0001 RECID=777 STAMP=739291886
archived log file name=C:\APP\ORACLE\MAZAR\FLASH_RECOVERY_AREA\AZARDB\ARCHIVELOG\2011_01_01\O1_MF_1_17_6KY53B3J_.ARC thread=1 sequence=17
media recovery complete, elapsed time: 00:00:06
Finished recover at 01-JAN-11
database opened
contents of Memory Script:
{
# make read only the tablespace that will be exported
sql clone 'alter tablespace TESTTBS read only';
# create directory for datapump import
sql "create or replace directory TSPITR_DIROBJ_DPDIR as ''
D:\backupnew''";
# create directory for datapump export
sql clone "create or replace directory TSPITR_DIROBJ_DPDIR as ''
D:\backupnew''";
}
executing Memory Script
sql statement: alter tablespace TESTTBS read only
sql statement: create or replace directory TSPITR_DIROBJ_DPDIR as ''D:\backupnew''
sql statement: create or replace directory TSPITR_DIROBJ_DPDIR as ''D:\backupnew''
Performing export of metadata...
EXPDP> Starting "SYS"."TSPITR_EXP_Bopd":
EXPDP> Processing object type TRANSPORTABLE_EXPORT/PLUGTS_BLK
EXPDP> Processing object type TRANSPORTABLE_EXPORT/TABLE
EXPDP> Processing object type TRANSPORTABLE_EXPORT/POST_INSTANCE/PLUGTS_BLK
EXPDP> Master table "SYS"."TSPITR_EXP_Bopd" successfully loaded/unloaded
EXPDP> ******************************************************************************
EXPDP> Dump file set for SYS.TSPITR_EXP_Bopd is:
EXPDP> D:\BACKUPNEW\TSPITR_BOPD_37645.DMP
EXPDP> ******************************************************************************
EXPDP> Datafiles required for transportable tablespace TESTTBS:
EXPDP> D:\BACKUP\TESTTBS01.DBF
EXPDP> Job "SYS"."TSPITR_EXP_Bopd" successfully completed at 15:12:24
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_Bopd" successfully loaded/unloaded
IMPDP> Starting "SYS"."TSPITR_IMP_Bopd":
IMPDP> Processing object type TRANSPORTABLE_EXPORT/PLUGTS_BLK
IMPDP> Processing object type TRANSPORTABLE_EXPORT/TABLE
IMPDP> Processing object type TRANSPORTABLE_EXPORT/POST_INSTANCE/PLUGTS_BLK
IMPDP> Job "SYS"."TSPITR_IMP_Bopd" successfully completed at 15:16:47
Import completed
contents of Memory Script:
{
# make read write and offline the imported tablespaces
sql 'alter tablespace TESTTBS read write';
sql 'alter tablespace TESTTBS offline';
# enable autobackups after TSPITR is finished
sql 'begin dbms_backup_restore.AutoBackupFlag(TRUE); end;';
}
executing Memory Script
sql statement: alter tablespace TESTTBS read write
sql statement: alter tablespace TESTTBS offline
sql statement: begin dbms_backup_restore.AutoBackupFlag(TRUE); end;
Removing automatic instance
Automatic instance removed
auxiliary instance file D:\BACKUPNEW\AZARDB\DATAFILE\O1_MF_TEMP_6KY5C761_.TMP deleted
auxiliary instance file D:\BACKUPNEW\AZARDB\ONLINELOG\O1_MF_4_6KY5BT82_.LOG deleted
auxiliary instance file D:\BACKUPNEW\AZARDB\ONLINELOG\O1_MF_3_6KY5BQSZ_.LOG deleted
auxiliary instance file D:\BACKUPNEW\AZARDB\ONLINELOG\O1_MF_2_6KY5BOYS_.LOG deleted
auxiliary instance file D:\BACKUPNEW\AZARDB\ONLINELOG\O1_MF_1_6KY5BMV3_.LOG deleted
auxiliary instance file D:\BACKUPNEW\AZARDB\DATAFILE\O1_MF_SYSAUX_6KY53YG4_.DBF deleted
auxiliary instance file D:\BACKUPNEW\AZARDB\DATAFILE\O1_MF_UNDOTBS2_6KY53YJT_.DBF deleted
auxiliary instance file D:\BACKUPNEW\AZARDB\DATAFILE\O1_MF_SYSTEM_6KY53Y6C_.DBF deleted
auxiliary instance file D:\BACKUPNEW\AZARDB\CONTROLFILE\O1_MF_6KY50OH2_.CTL deleted
Finished recover at 01-JAN-11
RMAN>
Step 7: Check tablespace status
SQL> select status,tablespace_name from dba_tablespaces where tablespace_name like 'TESTTBS%';
STATUS TABLESPACE_NAME
--------- ------------------------------
OFFLINE TESTTBS
11 rows selected.
Alter tablespace online
SQL> alter tablespace testtbs online;
Tablespace altered.
Step 8: Check table
SQL> conn testtbs/testtbs;
Connected.
SQL> select * from tab;
TNAME TABTYPE CLUSTERID
------------------------------ ------- ----------
TEST TABLE
SQL> select * from test;
EMPNAME CITY
-------------------- --------------------
azar riyadh
jabar chennai
SQL>
And also I'm go to check other table for data consistent.
SQL> conn testdb/testdb;
Connected.
SQL> select * from d;
EMPNAME
--------------------
azmi
kareem
syed
Now successfully recovered dropped tablespace using RMAN point in time recovery.
DBA 