TABLESPACE POINT IN TIME RECOVERY - TSPITR.pdf
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RMAN TABLESPACE POINT-IN-TIME RECOVERY - TSPITR
TABLESPACE POINT- IN - TIME RECOVERY – TSPITR TSPITR is one of the 11gR2 feature of the oracle database. In earlier versions of oracle we could NOT recover a dropped tablespace using tablespace point in time recovery without affecting the database. We have some limitations in earlier versions of oracle to perform TSPITR. Let’s say yesterday someone accidently dropped a tablespace or important object, but morning only informed to you. During this time some others did many activities in the same database. Bringing back the database to the particular time is really BAD choice. In this case, you have to perform tablespace point in time recovery. Tablespace Point-In-Time Recovery (generally abbreviated as TSPITR) is used to recovery of all datafiles in a tablespace to a specific point in time. TSPITR is using transportable tablespace functionality to restore one or more tablespace(s) to an earlier time without affecting rest of the tablespaces and objects in the database by RMAN. Let’s see how to restore & recover dropped tablespace in a specific time. RMAN carries out following steps to perform TSPITR RMAN automatically creates and start the auxiliary instance and assigning random SID. It takes the tablespace offline to be recovered in the target database. It restores a backup 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 recover tablespace command. Next it restores datafiles of the system, undo tablespaces with the datafiles of the recovered tablespace from backup to the auxiliary destination. RMAN first performs a recovery of the tablespace on the auxiliary instance and then recovers the restored datafiles to a specified time. Opens the auxiliary database with RESETLOGS option. TSPITR is used Datapump and Transportable Tablespace technology to extract and import the tablespace metadata into the original target database. First exports metadata of the recovered tablespace from the auxiliary instance to a dumpfile and Shuts down the auxiliary instance. Next it imports the metadata of objects in the recovered tablespace to the target database. Now RMAN makes the restored tablespace as read/write and will take it offline. Finally removes the auxiliary instance and delete all files associated with it.
LIMITATIONS AND RESTRICTIONS OF TSPITR Cannot perform TSPITR (If archived redo logs are not avail). Cannot perform TSPITR If database runs in NO ARCHIVELOG MODE. Cannot use TSPITR to recover objects owned by SYS. Cannot perform TSPITR on current default tablespace of the database. Any tablespace with replicated master tables cannot be recovered with TSPITR. TSPITR does NOT recover query optimizer statistics for recovered objects, as a DBA you must gather new statistics. Once you have completed TSPITR on the tablespace, all previous backups of that tablespace are no longer usable. So you should backup the tablespace after TSPITR has performed.
Exploring the Oracle DBA Technology by Gunasekaran ,Thiyagu
RMAN TABLESPACE POINT-IN-TIME RECOVERY - TSPITR
Before starting to perform TSPITR, we should check the relationship between objects of the recovered tablespace and objects of the different tablespaces which will not be recovered. Make sure objects in the tablespace are self-contained. Let’s say we have the tablesapace called “CRMS”. It contains table “TAB1” but indexes on that table resides on another tablespace called “HRMS”. In this case, if you want to recover “CRMS” tablespace to some point-in-time, then you must recover “HRMS” tablespace to the same point in time otherwise you will lose indexes. Let’s start automatic TSPITR. I am NOT using recovery catalog. CREATE TABLESPACES , USER , TABLE & INDEX SYS> create tablespace crms datafile '/u02/app/oracle/oradata/crms/crms01.dbf' size 100m; Tablespace created. SYS> alter tablespace crms add datafile '/u02/app/oracle/oradata/crms/crms02.dbf' size 100m; Tablespace altered. SYS> create tablespace hrms datafile '/u02/app/oracle/oradata/crms/hrms01.dbf' size 100m; Tablespace created. SYS> alter tablespace hrms add datafile '/u02/app/oracle/oradata/crms/hrms02.dbf' size 100m; Tablespace altered. SYS> create user sony identified by sony default tablespace crms; User created. SYS> grant connect, resource to sony; Grant succeeded. SONY> create table tab1(id number , name varchar2(15), gender varchar2(6), salary number); Table created. SONY> alter table tab1 modify(id number constraint cons1_pkey primary key); Table altered. SONY> create index TAB1_GENDER_INDX1 on tab1(gender) tablespace hrms; Index created. SONY> select table_name, index_name, tablespace_name from TABLE_NAME -----------
INDEX_NAME
TABLESPACE_NAME
------------
----------------
TAB1
CONS1_PKEY
CRMS
TAB1
TAB1_GENDER_INDX1
HRMS
user_indexes;
Exploring the Oracle DBA Technology by Gunasekaran ,Thiyagu
RMAN TABLESPACE POINT-IN-TIME RECOVERY - TSPITR
TAKE THE FRESH BACKUP OF DATABASE $ rlrman target / Recovery Manager: Release 11.2.0.1.0 - Production on Sun Apr 12 11:20:15 2015 Copyright (c) 1982, 2009, Oracle and/or its affiliates.
All rights reserved.
connected to target database: CRMS (DBID=1570419964) RMAN> backup database plus archivelog; Starting backup at 12-APR-15 current log archived using channel ORA_DISK_1 channel ORA_DISK_1: starting compressed archived log backup set channel ORA_DISK_1: specifying archived log(s) in backup set input archived log thread=1 sequence=70 RECID=443 STAMP=876828403 channel ORA_DISK_1: starting piece 1 at 12-APR-15 channel ORA_DISK_1: finished piece 1 at 12-APR-15 piece handle=/u02/app/oracle/flash_recovery_area/CRMS/backupset/2015_04_12/o1_mf_annnn_TAG20150412T 112643_bln28v7y_.bkp tag=TAG20150412T112643 comment=NONE channel ORA_DISK_1: backup set complete, elapsed time: 00:00:01 Finished backup at 12-APR-15 Starting backup at 12-APR-15 using channel ORA_DISK_1 channel ORA_DISK_1: starting compressed full datafile backup set channel ORA_DISK_1: specifying datafile(s) in backup set input datafile file number=00003 name=/u02/app/oracle/oradata/crms/undotbs01.dbf input datafile file number=00001 name=/u02/app/oracle/oradata/crms/system01.dbf input datafile file number=00002 name=/u02/app/oracle/oradata/crms/sysaux01.dbf input datafile file number=00004 name=/u02/app/oracle/oradata/crms/users01.dbf input datafile file number=00005 name=/u02/app/oracle/oradata/crms/crms01.dbf input datafile file number=00006 name=/u02/app/oracle/oradata/crms/hrms01.dbf input datafile file number=00007 name=/u02/app/oracle/oradata/crms/crms02.dbf input datafile file number=00014 name=/u02/app/oracle/oradata/crms/hrms02.dbf channel ORA_DISK_1: starting piece 1 at 12-APR-15 channel ORA_DISK_1: finished piece 1 at 12-APR-15 piece handle=/u02/app/oracle/flash_recovery_area/CRMS/backupset/2015_04_12/o1_mf_nnndf_TAG20150412T 112644_bln28wls_.bkp tag=TAG20150412T112644 comment=NONE channel ORA_DISK_1: backup set complete, elapsed time: 00:00:45 channel ORA_DISK_1: starting compressed full datafile backup set channel ORA_DISK_1: specifying datafile(s) in backup set including current control file in backup set including current SPFILE in backup set channel ORA_DISK_1: starting piece 1 at 12-APR-15 channel ORA_DISK_1: finished piece 1 at 12-APR-15
Exploring the Oracle DBA Technology by Gunasekaran ,Thiyagu
RMAN TABLESPACE POINT-IN-TIME RECOVERY - TSPITR
piece handle=/u02/app/oracle/flash_recovery_area/CRMS/backupset/2015_04_12/o1_mf_ncsnf_TAG20150412T 112644_bln2bbsp_.bkp tag=TAG20150412T112644 comment=NONE channel ORA_DISK_1: backup set complete, elapsed time: 00:00:01 Finished backup at 12-APR-15 Starting backup at 12-APR-15 current log archived using channel ORA_DISK_1 channel ORA_DISK_1: starting compressed archived log backup set channel ORA_DISK_1: specifying archived log(s) in backup set input archived log thread=1 sequence=71 RECID=444 STAMP=876828452 channel ORA_DISK_1: starting piece 1 at 12-APR-15 channel ORA_DISK_1: finished piece 1 at 12-APR-15 piece handle=/u02/app/oracle/flash_recovery_area/CRMS/backupset/2015_04_12/o1_mf_annnn_TAG20150412T 112732_bln2bd6s_.bkp tag=TAG20150412T112732 comment=NONE channel ORA_DISK_1: backup set complete, elapsed time: 00:00:01 Finished backup at 12-APR-15 CREATE SOME TABLES IN SONY USER SONY> create table tab2 as select * from tab1; Table created. SONY> create table tab3 as select * from tab1; Table created. SONY> create index tab3_gender_indx1 on tab3(gender) tablespace users; Index created. SONY> select index_name, table_name, tablespace_name from user_indexes; INDEX_NAME
TABLE_NAME
TABLESPACE_NAME
-------------------- ----------- --------------------------TAB3_GENDER_INDX1
TAB3
USERS
CONS1_PKEY
TAB1
CRMS
TAB1_GENDER_INDX1
TAB1
HRMS
CREARE NEW TABLE IN SYSTEM TABLESPACE SONY> create table tab4(a date) tablespace system; Table created. SONY> insert into tab4 values(sysdate); 1 row created. SONY> insert into tab4 values(sysdate); 1 row created. SONY> commit; Commit complete.
Exploring the Oracle DBA Technology by Gunasekaran ,Thiyagu
RMAN TABLESPACE POINT-IN-TIME RECOVERY - TSPITR
SONY>select table_name, tablespace_name from user_tables; TABLE_NAME
TABLESPACE_NAME
------------------------------ -----------------------------TAB1
CRMS
TAB3
CRMS
TAB2
CRMS
TAB4
SYSTEM
NOTE SCN & TIMEATAMP BEFORE DROP SYS> select to_char(sysdate,'dd-mm-yy hh24:mi:ss')"SYSDATE" from dual; SYSDATE ----------------12-04-15 12:18:40 SYS> select current_scn from v$database; CURRENT_SCN ----------3944869 DROP SONY SCHEMA OBJECTS AND TABLESPACE (CRMS) SYS> drop table sony.tab1; Table dropped. SYS> drop table sony.tab2; Table dropped. SYS> drop table sony.tab3; Table dropped. SYS> drop table sony.tab4; Table dropped. SYS> drop tablespace crms including contents and datafiles; Tablespace dropped.
IDENTIFY THE DROP TIME FROM ALERT LOG $ tail -f /u02/app/oracle/diag/rdbms/crms/crms/trace/alert_crms.log Sun Apr 12 12:21:29 2015 drop tablespace crms including contents and datafiles Deleted file /u02/app/oracle/oradata/crms/crms01.dbf Deleted file /u02/app/oracle/oradata/crms/crms02.dbf Completed: drop tablespace crms including contents and datafiles We can use UNTIL SCN/TIME clause to recover dropped tablespace. Example for UNTIL SCN clause. RMAN> recover tablespace "CRMS", "HRMS" until SCN 3944869 auxiliary destination '/u01';
Exploring the Oracle DBA Technology by Gunasekaran ,Thiyagu
RMAN TABLESPACE POINT-IN-TIME RECOVERY - TSPITR
Starting TSPITR… using until time clause. RMAN> recover tablespace "CRMS", "HRMS" until TIME "to_date('12-04-15 12:18:40','DD-MM-YY HH24:MI:SS')" auxiliary destination '/u01'; Starting recover at 12-APR-15 using channel ORA_DISK_1 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='tjmt' initialization parameters used for automatic instance: db_name=CRMS db_unique_name=tjmt_tspitr_CRMS compatible=11.2.0.0.0 db_block_size=8192 db_files=200 sga_target=280M processes=50 db_create_file_dest=/u01 log_archive_dest_1='location=/u01' #No auxiliary parameter file used starting up automatic instance CRMS Oracle instance started Total System Global Area Fixed Size
292933632 bytes 1336092 bytes
Variable Size
100666596 bytes
Database Buffers
184549376 bytes
Redo Buffers
6381568 bytes
Automatic instance created List of tablespaces that have been dropped from the target database: Tablespace CRMS contents of Memory Script: { # set requested point in time set until
time "to_date('12-04-15 12:18:40','DD-MM-YY HH24:MI:SS')";
# 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';
Exploring the Oracle DBA Technology by Gunasekaran ,Thiyagu
RMAN TABLESPACE POINT-IN-TIME RECOVERY - TSPITR
# 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 12-APR-15 allocated channel: ORA_AUX_DISK_1 channel ORA_AUX_DISK_1: SID=19 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 /u02/app/oracle/flash_recovery_area/CRMS/backupset/2015_04_12/o1_mf_ncsnf_TAG20150412T112644_ bln2bbsp_.bkp channel ORA_AUX_DISK_1: piece handle=/u02/app/oracle/flash_recovery_area/CRMS/backupset/2015_04_12/o1_mf_ncsnf_TAG20150412T 112644_bln2bbsp_.bkp tag=TAG20150412T112644 channel ORA_AUX_DISK_1: restored backup piece 1 channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:00:02 output file name=/u01/CRMS/controlfile/o1_mf_bln6dhz6_.ctl Finished restore at 12-APR-15 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
time "to_date('12-04-15 12:18:40','DD-MM-YY HH24:MI:SS')";
plsql ; # 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;
Exploring the Oracle DBA Technology by Gunasekaran ,Thiyagu
RMAN TABLESPACE POINT-IN-TIME RECOVERY - TSPITR
set newname for clone datafile
2 to new;
set newname for clone tempfile
1 to new;
set newname for datafile
6 to
"/u02/app/oracle/oradata/crms/hrms01.dbf"; set newname for datafile
14 to
"/u02/app/oracle/oradata/crms/hrms02.dbf"; set newname for datafile
5 to
"/u02/app/oracle/oradata/crms/crms01.dbf"; set newname for datafile
7 to
"/u02/app/oracle/oradata/crms/crms02.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, 14, 5, 7;
switch clone datafile all; } executing Memory Script executing command: SET until clause sql statement: alter tablespace "HRMS" offline immediate executing command: SET NEWNAME executing command: SET NEWNAME executing command: SET NEWNAME executing command: SET NEWNAME executing command: SET NEWNAME executing command: SET NEWNAME executing command: SET NEWNAME executing command: SET NEWNAME renamed tempfile 1 to /u01/CRMS/datafile/o1_mf_temp_%u_.tmp in control file Starting restore at 12-APR-15 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 /u01/CRMS/datafile/o1_mf_system_%u_.dbf channel ORA_AUX_DISK_1: restoring datafile 00003 to /u01/CRMS/datafile/o1_mf_undotbs1_%u_.dbf channel ORA_AUX_DISK_1: restoring datafile 00002 to /u01/CRMS/datafile/o1_mf_sysaux_%u_.dbf channel ORA_AUX_DISK_1: restoring datafile 00006 to /u02/app/oracle/oradata/crms/hrms01.dbf channel ORA_AUX_DISK_1: restoring datafile 00014 to /u02/app/oracle/oradata/crms/hrms02.dbf channel ORA_AUX_DISK_1: restoring datafile 00005 to /u02/app/oracle/oradata/crms/crms01.dbf channel ORA_AUX_DISK_1: restoring datafile 00007 to /u02/app/oracle/oradata/crms/crms02.dbf
Exploring the Oracle DBA Technology by Gunasekaran ,Thiyagu
RMAN TABLESPACE POINT-IN-TIME RECOVERY - TSPITR
channel ORA_AUX_DISK_1: reading from backup piece /u02/app/oracle/flash_recovery_area/CRMS/backupset/2015_04_12/o1_mf_nnndf_TAG20150412T112644_ bln28wls_.bkp channel ORA_AUX_DISK_1: piece handle=/u02/app/oracle/flash_recovery_area/CRMS/backupset/2015_04_12/o1_mf_nnndf_TAG20150412T 112644_bln28wls_.bkp tag=TAG20150412T112644 channel ORA_AUX_DISK_1: restored backup piece 1 channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:02:56 Finished restore at 12-APR-15
datafile 1 switched to datafile copy input datafile copy RECID=230 STAMP=876832798 file name=/u01/CRMS/datafile/o1_mf_system_bln6dpxl_.dbf datafile 3 switched to datafile copy input datafile copy RECID=231 STAMP=876832798 file name=/u01/CRMS/datafile/o1_mf_undotbs1_bln6dpwg_.dbf datafile 2 switched to datafile copy input datafile copy RECID=232 STAMP=876832798 file name=/u01/CRMS/datafile/o1_mf_sysaux_bln6dpyh_.dbf contents of Memory Script: { # set requested point in time set until
time "to_date('12-04-15 12:18:40','DD-MM-YY HH24:MI:SS')";
# 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";
sql clone "alter database datafile
14 online";
sql clone "alter database datafile
5 online";
sql clone "alter database datafile
7 online";
# recover and open resetlogs recover clone database tablespace
"CRMS", "HRMS", "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
sql statement: alter database datafile
14 online
sql statement: alter database datafile
5 online
sql statement: alter database datafile
7 online
Exploring the Oracle DBA Technology by Gunasekaran ,Thiyagu
RMAN TABLESPACE POINT-IN-TIME RECOVERY - TSPITR
Starting recover at 12-APR-15 using channel ORA_AUX_DISK_1 starting media recovery archived log for thread 1 with sequence 71 is already on disk as file /u02/app/oracle/flash_recovery_area/CRMS/archivelog/2015_04_12/o1_mf_1_71_bln2bd0q_.arc archived log for thread 1 with sequence 72 is already on disk as file /u02/app/oracle/flash_recovery_area/CRMS/archivelog/2015_04_12/o1_mf_1_72_bln6domy_.arc archived log file name=/u02/app/oracle/flash_recovery_area/CRMS/archivelog/2015_04_12/o1_mf_1_71_bln2bd0q_.arc thread=1 sequence=71 archived log file name=/u02/app/oracle/flash_recovery_area/CRMS/archivelog/2015_04_12/o1_mf_1_72_bln6domy_.arc thread=1 sequence=72 media recovery complete, elapsed time: 00:00:04 Finished recover at 12-APR-15 database opened contents of Memory Script: { # make read only the tablespace that will be exported sql clone 'alter tablespace
"CRMS" read only';
sql clone 'alter tablespace
"HRMS" read only';
# create directory for datapump import sql "create or replace directory TSPITR_DIROBJ_DPDIR as '' /u01''"; # create directory for datapump export sql clone "create or replace directory TSPITR_DIROBJ_DPDIR as '' /u01''"; } executing Memory Script sql statement: alter tablespace
"CRMS" read only
sql statement: alter tablespace
"HRMS" read only
sql statement: create or replace directory TSPITR_DIROBJ_DPDIR as ''/u01'' sql statement: create or replace directory TSPITR_DIROBJ_DPDIR as ''/u01'' Performing export of metadata... EXPDP> Starting "SYS"."TSPITR_EXP_tjmt": EXPDP> Processing object type TRANSPORTABLE_EXPORT/PLUGTS_BLK EXPDP> Processing object type TRANSPORTABLE_EXPORT/TABLE EXPDP> Processing object type TRANSPORTABLE_EXPORT/INDEX EXPDP> Processing object type TRANSPORTABLE_EXPORT/CONSTRAINT/CONSTRAINT EXPDP> Processing object type TRANSPORTABLE_EXPORT/INDEX_STATISTICS EXPDP> Processing object type TRANSPORTABLE_EXPORT/TABLE_STATISTICS EXPDP> Processing object type TRANSPORTABLE_EXPORT/POST_INSTANCE/PLUGTS_BLK
Exploring the Oracle DBA Technology by Gunasekaran ,Thiyagu
RMAN TABLESPACE POINT-IN-TIME RECOVERY - TSPITR
EXPDP> Master table "SYS"."TSPITR_EXP_tjmt" successfully loaded/unloaded EXPDP> ****************************************************************************** EXPDP> Dump file set for SYS.TSPITR_EXP_tjmt is: EXPDP>
/u01/tspitr_tjmt_40918.dmp
EXPDP> ****************************************************************************** EXPDP> Datafiles required for transportable tablespace CRMS: EXPDP>
/u02/app/oracle/oradata/crms/crms01.dbf
EXPDP>
/u02/app/oracle/oradata/crms/crms02.dbf
EXPDP> Datafiles required for transportable tablespace HRMS: EXPDP>
/u02/app/oracle/oradata/crms/hrms01.dbf
EXPDP>
/u02/app/oracle/oradata/crms/hrms02.dbf
EXPDP> Job "SYS"."TSPITR_EXP_tjmt" successfully completed at 12:41:02 Export completed contents of Memory Script: { # shutdown clone before import shutdown clone immediate # drop target tablespaces before importing them back sql 'drop tablespace
"HRMS" including contents keep datafiles';
} executing Memory Script database closed database dismounted Oracle instance shut down sql statement: drop tablespace
"HRMS" including contents keep datafiles
Performing import of metadata... IMPDP> Master table "SYS"."TSPITR_IMP_tjmt" successfully loaded/unloaded IMPDP> Starting "SYS"."TSPITR_IMP_tjmt": IMPDP> Processing object type TRANSPORTABLE_EXPORT/PLUGTS_BLK IMPDP> Processing object type TRANSPORTABLE_EXPORT/TABLE IMPDP> Processing object type TRANSPORTABLE_EXPORT/INDEX IMPDP> Processing object type TRANSPORTABLE_EXPORT/CONSTRAINT/CONSTRAINT IMPDP> Processing object type TRANSPORTABLE_EXPORT/INDEX_STATISTICS IMPDP> Processing object type TRANSPORTABLE_EXPORT/TABLE_STATISTICS IMPDP> Processing object type TRANSPORTABLE_EXPORT/POST_INSTANCE/PLUGTS_BLK IMPDP> Job "SYS"."TSPITR_IMP_tjmt" successfully completed at 12:41:22 Import completed
contents of Memory Script: { # make read write and offline the imported tablespaces sql 'alter tablespace
"CRMS" read write';
sql 'alter tablespace
"CRMS" offline';
sql 'alter tablespace
"HRMS" read write';
sql 'alter tablespace
"HRMS" offline';
Exploring the Oracle DBA Technology by Gunasekaran ,Thiyagu
RMAN TABLESPACE POINT-IN-TIME RECOVERY - TSPITR
# enable autobackups after TSPITR is finished sql 'begin dbms_backup_restore.AutoBackupFlag(TRUE); end;'; } executing Memory Script sql statement: alter tablespace
"CRMS" read write
sql statement: alter tablespace
"CRMS" offline
sql statement: alter tablespace
"HRMS" read write
sql statement: alter tablespace
"HRMS" offline
sql statement: begin dbms_backup_restore.AutoBackupFlag(TRUE); end; Removing automatic instance Automatic instance removed auxiliary instance file /u01/CRMS/datafile/o1_mf_temp_bln6lq5l_.tmp deleted auxiliary instance file /u01/CRMS/onlinelog/o1_mf_3_bln6lktx_.log deleted auxiliary instance file /u01/CRMS/onlinelog/o1_mf_2_bln6lhd5_.log deleted auxiliary instance file /u01/CRMS/onlinelog/o1_mf_1_bln6ldl9_.log deleted auxiliary instance file /u01/CRMS/datafile/o1_mf_sysaux_bln6dpyh_.dbf deleted auxiliary instance file /u01/CRMS/datafile/o1_mf_undotbs1_bln6dpwg_.dbf deleted auxiliary instance file /u01/CRMS/datafile/o1_mf_system_bln6dpxl_.dbf deleted auxiliary instance file /u01/CRMS/controlfile/o1_mf_bln6dhz6_.ctl deleted Finished recover at 12-APR-15
CHECK THE TABLEPSACE STATUS AND EXISTANCE SYS> select tablespace_name, status from dba_tablespaces; TABLESPACE_NAME
STATUS
------------------------------ --------SYSTEM
ONLINE
SYSAUX
ONLINE
UNDOTBS1
ONLINE
TEMP
ONLINE
USERS
ONLINE
CRMS
OFFLINE
HRMS
OFFLINE
7 rows selected. MAKE TABLESPACES TO ONLINE SYS> alter tablespace crms online; Tablespace altered. SYS> alter tablespace hrms online; Tablespace altered. SYS> conn sony/sony Connected.
Exploring the Oracle DBA Technology by Gunasekaran ,Thiyagu
RMAN TABLESPACE POINT-IN-TIME RECOVERY - TSPITR
SONY> select * from tab; TNAME
TABTYPE
CLUSTERID
------------------------------ ------- ---------TAB1
TABLE
TAB2
TABLE
TAB3
TABLE
SONY> select table_name, index_name, tablespace_name from user_indexes; TABLE_NAME
INDEX_NAME
----------------
TABLESPACE_NAME
----------------- ------------------
TAB1
CONS1_PKEY
CRMS
TAB1
TAB1_GENDER_INDX1
HRMS
SONY> select * from tab4; select * from tab4 * ERROR at line 1: ORA-00942: table or view does not exist POINTS TO NOTE Table TAB4 was not recovered because it was created under SYSTEM tablespace and TSPITR is NOT supported for objects in system tablespace or objects are owned by SYS. Index TAB3_GENDER_INDX1 is missing. Tablespace crms contains table “TAB3” but indexes on that table resides on another tablespace called “USERS”. In this case, if we perform TSPITR on crms tablespace to some point-in-time, then we must recover “USERS” tablespace to the same point-in-time. But we did not include users tablespace so index TAB3_GENDER_INDX1 was not recovered.
RMAN> list backup; using target database control file instead of recovery catalog List of Backup Sets =================== .. ... List of Datafiles in backup set 490 File LV Type Ckp SCN
Ckp Time
Name
---- -- ---- ---------- --------- ---1
Full 3943214
12-APR-15 /u02/app/oracle/oradata/crms/system01.dbf
2
Full 3943214
12-APR-15 /u02/app/oracle/oradata/crms/sysaux01.dbf
3
Full 3943214
12-APR-15 /u02/app/oracle/oradata/crms/undotbs01.dbf
4
Full 3943214
12-APR-15 /u02/app/oracle/oradata/crms/users01.dbf
5
Full 3943214
12-APR-15
6
Full 3943214
12-APR-15
7
Full 3943214
12-APR-15
14
Full 3943214
12-APR-15
Once we performed TSPITR, you must re-take backup of the recovered tablespaces.
Exploring the Oracle DBA Technology by Gunasekaran ,Thiyagu
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