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In this post I am going to demonstrate the table recovery using RMAN. There are chances to drop tables accidentally by developer. In this cases DBA asked to recovery the dropped table from the backup.
Make sure you mention the table name in capital letter with in quote. In this demo I used 'TEST'. 'SALARYGRADE'.
RMAN command
run
{
RECOVER TABLE 'TEST'.'SALARYGRADE'
until time "to_date('15-07-2020 03:25:00','dd-mm-yyyy hh:mi:ss')"
AUXILIARY DESTINATION '/u02/oradata/CDB/auxilary/' ;
}
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Demo
Taking the backup of the database. You can use the latest backup before the table drop.
Drop the table salarygrade from the test user
Recovery of the table using RMAN.
After recovery
[oracle@TESTBOX ~]$ rman target / Recovery Manager: Release 19.0.0.0.0 - Production on Wed Jul 15 00:40:19 2020 Version 19.3.0.0.0 Copyright (c) 1982, 2019, Oracle and/or its affiliates. All rights reserved. connected to target database: CDB (DBID=2318676857) RMAN> backup database plus archivelog; Starting backup at 15-JUL-20 current log archived using target database control file instead of recovery catalog allocated channel: ORA_DISK_1 channel ORA_DISK_1: SID=459 device type=DISK channel ORA_DISK_1: starting archived log backup set channel ORA_DISK_1: specifying archived log(s) in backup set input archived log thread=1 sequence=21 RECID=1 STAMP=1045788048 channel ORA_DISK_1: starting piece 1 at 15-JUL-20 channel ORA_DISK_1: finished piece 1 at 15-JUL-20 piece handle=/u01/app/oracle/product/19.0.0/dbhome_1/dbs/4ev5atci_1_1 tag=TAG20200715T004050 comment=NONE channel ORA_DISK_1: backup set complete, elapsed time: 00:00:01 Finished backup at 15-JUL-20 Starting backup at 15-JUL-20 using channel ORA_DISK_1 channel ORA_DISK_1: starting full datafile backup set channel ORA_DISK_1: specifying datafile(s) in backup set input datafile file number=00005 name=/u02/oradata/CDB/user_data01.dbf input datafile file number=00001 name=/u02/oradata/CDB/system01.dbf input datafile file number=00003 name=/u02/oradata/CDB/sysaux01.dbf input datafile file number=00004 name=/u02/oradata/CDB/undotbs01.dbf input datafile file number=00007 name=/u02/oradata/CDB/users01.dbf channel ORA_DISK_1: starting piece 1 at 15-JUL-20 channel ORA_DISK_1: finished piece 1 at 15-JUL-20 piece handle=/u01/app/oracle/product/19.0.0/dbhome_1/dbs/4fv5atck_1_1 tag=TAG20200715T004051 comment=NONE channel ORA_DISK_1: backup set complete, elapsed time: 00:00:15 Finished backup at 15-JUL-20 Starting backup at 15-JUL-20 current log archived using channel ORA_DISK_1 channel ORA_DISK_1: starting archived log backup set channel ORA_DISK_1: specifying archived log(s) in backup set input archived log thread=1 sequence=22 RECID=2 STAMP=1045788067 channel ORA_DISK_1: starting piece 1 at 15-JUL-20 channel ORA_DISK_1: finished piece 1 at 15-JUL-20 piece handle=/u01/app/oracle/product/19.0.0/dbhome_1/dbs/4gv5atd4_1_1 tag=TAG20200715T004107 comment=NONE channel ORA_DISK_1: backup set complete, elapsed time: 00:00:01 Finished backup at 15-JUL-20 Starting Control File and SPFILE Autobackup at 15-JUL-20 piece handle=/u01/app/oracle/product/19.0.0/dbhome_1/dbs/c-2318676857-20200715-00 comment=NONE Finished Control File and SPFILE Autobackup at 15-JUL-20
Drop the table salarygrade from the test user
SQL> select to_char(sysdate,'dd/mm/yyyy hh:mi:ss') from dual; TO_CHAR(SYSDATE,'DD ------------------- 15/07/2020 03:31:29 SQL> drop table test.salarygrade; Table dropped.
Recovery of the table using RMAN.
RMAN> RMAN> run { RECOVER TABLE 'TEST'.'SALARYGRADE' until time "to_date('15-07-2020 03:25:00','dd-mm-yyyy hh:mi:ss')" AUXILIARY DESTINATION '/u02/oradata/CDB/auxilary/' ; } Starting recover at 15-JUL-20 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='iiFb' initialization parameters used for automatic instance: db_name=CDB db_unique_name=iiFb_pitr_CDB compatible=19.0.0 db_block_size=8192 db_files=200 diagnostic_dest=/u01/app/oracle _system_trig_enabled=FALSE sga_target=800M processes=200 db_create_file_dest=/u02/oradata/CDB/auxilary/ log_archive_dest_1='location=/u02/oradata/CDB/auxilary/' #No auxiliary parameter file used starting up automatic instance CDB Oracle instance started Total System Global Area 838858176 bytes Fixed Size 8902080 bytes Variable Size 226492416 bytes Database Buffers 599785472 bytes Redo Buffers 3678208 bytes Automatic instance created contents of Memory Script: { # set requested point in time set until time "to_date('15-07-2020 03:25:00','dd-mm-yyyy hh: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'; } executing Memory Script executing command: SET until clause Starting restore at 15-JUL-20 allocated channel: ORA_AUX_DISK_1 channel ORA_AUX_DISK_1: SID=34 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 /u01/app/oracle/product/19.0.0/dbhome_1/dbs/c-2318676857-20200715-04 channel ORA_AUX_DISK_1: piece handle=/u01/app/oracle/product/19.0.0/dbhome_1/dbs/c-2318676857-20200715-04 tag=TAG20200715T030752 channel ORA_AUX_DISK_1: restored backup piece 1 channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:00:01 output file name=/u02/oradata/CDB/auxilary/CDB/controlfile/o1_mf_hjxdhfn3_.ctl Finished restore at 15-JUL-20 sql statement: alter database mount clone database sql statement: alter system archive log current contents of Memory Script: { # set requested point in time set until time "to_date('15-07-2020 03:25:00','dd-mm-yyyy hh:mi:ss')"; # set destinations for recovery set and auxiliary set datafiles set newname for clone datafile 1 to new; set newname for clone datafile 4 to new; set newname for clone datafile 3 to new; set newname for clone tempfile 1 to new; # switch all tempfiles switch clone tempfile all; # restore the tablespaces in the recovery set and the auxiliary set restore clone datafile 1, 4, 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 renamed tempfile 1 to /u02/oradata/CDB/auxilary/CDB/datafile/o1_mf_temp_%u_.tmp in control file Starting restore at 15-JUL-20 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 /u02/oradata/CDB/auxilary/CDB/datafile/o1_mf_system_%u_.dbf channel ORA_AUX_DISK_1: restoring datafile 00004 to /u02/oradata/CDB/auxilary/CDB/datafile/o1_mf_undotbs1_%u_.dbf channel ORA_AUX_DISK_1: restoring datafile 00003 to /u02/oradata/CDB/auxilary/CDB/datafile/o1_mf_sysaux_%u_.dbf channel ORA_AUX_DISK_1: reading from backup piece /u01/app/oracle/product/19.0.0/dbhome_1/dbs/4vv5b5vn_1_1 channel ORA_AUX_DISK_1: piece handle=/u01/app/oracle/product/19.0.0/dbhome_1/dbs/4vv5b5vn_1_1 tag=TAG20200715T030734 channel ORA_AUX_DISK_1: restored backup piece 1 channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:00:15 Finished restore at 15-JUL-20 datafile 1 switched to datafile copy input datafile copy RECID=4 STAMP=1045798597 file name=/u02/oradata/CDB/auxilary/CDB/datafile/o1_mf_system_hjxdhpdv_.dbf datafile 4 switched to datafile copy input datafile copy RECID=5 STAMP=1045798597 file name=/u02/oradata/CDB/auxilary/CDB/datafile/o1_mf_undotbs1_hjxdhpf5_.dbf datafile 3 switched to datafile copy input datafile copy RECID=6 STAMP=1045798597 file name=/u02/oradata/CDB/auxilary/CDB/datafile/o1_mf_sysaux_hjxdhpf3_.dbf contents of Memory Script: { # set requested point in time set until time "to_date('15-07-2020 03:25:00','dd-mm-yyyy hh:mi:ss')"; # online the datafiles restored or switched sql clone "alter database datafile 1 online"; sql clone "alter database datafile 4 online"; sql clone "alter database datafile 3 online"; # recover and open database read only recover clone database tablespace "SYSTEM", "UNDOTBS1", "SYSAUX"; sql clone 'alter database open read only'; } executing Memory Script executing command: SET until clause sql statement: alter database datafile 1 online sql statement: alter database datafile 4 online sql statement: alter database datafile 3 online Starting recover at 15-JUL-20 using channel ORA_AUX_DISK_1 starting media recovery archived log for thread 1 with sequence 54 is already on disk as file /u01/app/oracle/product/19.0.0/dbhome_1/dbs/arch/1_54_1020567933.dbf archived log for thread 1 with sequence 55 is already on disk as file /u01/app/oracle/product/19.0.0/dbhome_1/dbs/arch/1_55_1020567933.dbf archived log file name=/u01/app/oracle/product/19.0.0/dbhome_1/dbs/arch/1_54_1020567933.dbf thread=1 sequence=54 archived log file name=/u01/app/oracle/product/19.0.0/dbhome_1/dbs/arch/1_55_1020567933.dbf thread=1 sequence=55 media recovery complete, elapsed time: 00:00:00 Finished recover at 15-JUL-20 sql statement: alter database open read only contents of Memory Script: { sql clone "create spfile from memory"; shutdown clone immediate; startup clone nomount; sql clone "alter system set control_files = ''/u02/oradata/CDB/auxilary/CDB/controlfile/o1_mf_hjxdhfn3_.ctl'' comment= ''RMAN set'' scope=spfile"; shutdown clone immediate; startup clone nomount; # mount database sql clone 'alter database mount clone database'; } executing Memory Script sql statement: create spfile from memory database closed database dismounted Oracle instance shut down connected to auxiliary database (not started) Oracle instance started Total System Global Area 838858176 bytes Fixed Size 8902080 bytes Variable Size 226492416 bytes Database Buffers 599785472 bytes Redo Buffers 3678208 bytes sql statement: alter system set control_files = ''/u02/oradata/CDB/auxilary/CDB/controlfile/o1_mf_hjxdhfn3_.ctl'' comment= ''RMAN set'' scope=spfile Oracle instance shut down connected to auxiliary database (not started) Oracle instance started Total System Global Area 838858176 bytes Fixed Size 8902080 bytes Variable Size 226492416 bytes Database Buffers 599785472 bytes Redo Buffers 3678208 bytes sql statement: alter database mount clone database contents of Memory Script: { # set requested point in time set until time "to_date('15-07-2020 03:25:00','dd-mm-yyyy hh:mi:ss')"; # set destinations for recovery set and auxiliary set datafiles set newname for datafile 7 to new; # restore the tablespaces in the recovery set and the auxiliary set restore clone datafile 7; switch clone datafile all; } executing Memory Script executing command: SET until clause executing command: SET NEWNAME Starting restore at 15-JUL-20 allocated channel: ORA_AUX_DISK_1 channel ORA_AUX_DISK_1: SID=34 device type=DISK 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 00007 to /u02/oradata/CDB/auxilary/IIFB_PITR_CDB/datafile/o1_mf_users_%u_.dbf channel ORA_AUX_DISK_1: reading from backup piece /u01/app/oracle/product/19.0.0/dbhome_1/dbs/4vv5b5vn_1_1 channel ORA_AUX_DISK_1: piece handle=/u01/app/oracle/product/19.0.0/dbhome_1/dbs/4vv5b5vn_1_1 tag=TAG20200715T030734 channel ORA_AUX_DISK_1: restored backup piece 1 channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:00:01 Finished restore at 15-JUL-20 datafile 7 switched to datafile copy input datafile copy RECID=8 STAMP=1045798675 file name=/u02/oradata/CDB/auxilary/IIFB_PITR_CDB/datafile/o1_mf_users_hjxdllo7_.dbf contents of Memory Script: { # set requested point in time set until time "to_date('15-07-2020 03:25:00','dd-mm-yyyy hh:mi:ss')"; # online the datafiles restored or switched sql clone "alter database datafile 7 online"; # recover and open resetlogs recover clone database tablespace "USERS", "SYSTEM", "UNDOTBS1", "SYSAUX" delete archivelog; alter clone database open resetlogs; } executing Memory Script executing command: SET until clause sql statement: alter database datafile 7 online Starting recover at 15-JUL-20 using channel ORA_AUX_DISK_1 starting media recovery archived log for thread 1 with sequence 54 is already on disk as file /u01/app/oracle/product/19.0.0/dbhome_1/dbs/arch/1_54_1020567933.dbf archived log for thread 1 with sequence 55 is already on disk as file /u01/app/oracle/product/19.0.0/dbhome_1/dbs/arch/1_55_1020567933.dbf archived log file name=/u01/app/oracle/product/19.0.0/dbhome_1/dbs/arch/1_54_1020567933.dbf thread=1 sequence=54 archived log file name=/u01/app/oracle/product/19.0.0/dbhome_1/dbs/arch/1_55_1020567933.dbf thread=1 sequence=55 media recovery complete, elapsed time: 00:00:00 Finished recover at 15-JUL-20 database opened contents of Memory Script: { # create directory for datapump import sql "create or replace directory TSPITR_DIROBJ_DPDIR as '' /u02/oradata/CDB/auxilary/''"; # create directory for datapump export sql clone "create or replace directory TSPITR_DIROBJ_DPDIR as '' /u02/oradata/CDB/auxilary/''"; } executing Memory Script sql statement: create or replace directory TSPITR_DIROBJ_DPDIR as ''/u02/oradata/CDB/auxilary/'' sql statement: create or replace directory TSPITR_DIROBJ_DPDIR as ''/u02/oradata/CDB/auxilary/'' Performing export of tables... EXPDP> Starting "SYS"."TSPITR_EXP_iiFb_hafw": EXPDP> Processing object type TABLE_EXPORT/TABLE/TABLE_DATA EXPDP> Processing object type TABLE_EXPORT/TABLE/STATISTICS/TABLE_STATISTICS EXPDP> Processing object type TABLE_EXPORT/TABLE/STATISTICS/MARKER EXPDP> Processing object type TABLE_EXPORT/TABLE/TABLE EXPDP> . . exported "TEST"."SALARYGRADE" 6.101 KB 5 rows EXPDP> Master table "SYS"."TSPITR_EXP_iiFb_hafw" successfully loaded/unloaded EXPDP> ****************************************************************************** EXPDP> Dump file set for SYS.TSPITR_EXP_iiFb_hafw is: EXPDP> /u02/oradata/CDB/auxilary/tspitr_iiFb_90778.dmp EXPDP> Job "SYS"."TSPITR_EXP_iiFb_hafw" successfully completed at Wed Jul 15 03:39:25 2020 elapsed 0 00:01:04 Export completed contents of Memory Script: { # shutdown clone before import shutdown clone abort } executing Memory Script Oracle instance shut down Performing import of tables... IMPDP> Master table "SYS"."TSPITR_IMP_iiFb_hvhD" successfully loaded/unloaded IMPDP> Starting "SYS"."TSPITR_IMP_iiFb_hvhD": IMPDP> Processing object type TABLE_EXPORT/TABLE/TABLE IMPDP> Processing object type TABLE_EXPORT/TABLE/TABLE_DATA IMPDP> . . imported "TEST"."SALARYGRADE" 6.101 KB 5 rows IMPDP> Processing object type TABLE_EXPORT/TABLE/STATISTICS/TABLE_STATISTICS IMPDP> Processing object type TABLE_EXPORT/TABLE/STATISTICS/MARKER IMPDP> Job "SYS"."TSPITR_IMP_iiFb_hvhD" successfully completed at Wed Jul 15 03:40:41 2020 elapsed 0 00:01:01 Import completed Removing automatic instance Automatic instance removed auxiliary instance file /u02/oradata/CDB/auxilary/CDB/datafile/o1_mf_temp_hjxdj9d2_.tmp deleted auxiliary instance file /u02/oradata/CDB/auxilary/IIFB_PITR_CDB/onlinelog/o1_mf_3_hjxdls1v_.log deleted auxiliary instance file /u02/oradata/CDB/auxilary/IIFB_PITR_CDB/onlinelog/o1_mf_2_hjxdlphl_.log deleted auxiliary instance file /u02/oradata/CDB/auxilary/IIFB_PITR_CDB/onlinelog/o1_mf_1_hjxdlpd8_.log deleted auxiliary instance file /u02/oradata/CDB/auxilary/IIFB_PITR_CDB/datafile/o1_mf_users_hjxdllo7_.dbf deleted auxiliary instance file /u02/oradata/CDB/auxilary/CDB/datafile/o1_mf_sysaux_hjxdhpf3_.dbf deleted auxiliary instance file /u02/oradata/CDB/auxilary/CDB/datafile/o1_mf_undotbs1_hjxdhpf5_.dbf deleted auxiliary instance file /u02/oradata/CDB/auxilary/CDB/datafile/o1_mf_system_hjxdhpdv_.dbf deleted auxiliary instance file /u02/oradata/CDB/auxilary/CDB/controlfile/o1_mf_hjxdhfn3_.ctl deleted auxiliary instance file tspitr_iiFb_90778.dmp deleted Finished recover at 15-JUL-20 RMAN>
After recovery
SQL> select count(*) from test.salarygrade; COUNT(*) ---------- 5
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