LOSS OF FULL DATABASE & RECOVERY - RMAN BACKUP.pdf
April 27, 2017 | Author: G.R.THIYAGU ; Oracle DBA | Category: N/A
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LOSS OF FULL DATABASE AND DATABASE RECOVERY | ORACLE 11g
CONNECT TO TARGET DATABASE USING RMAN $ export ORACLE_SID=crms $ rlrman target / Recovery Manager: Release 11.2.0.1.0 - Production on Sat Jan 31 10:13:56 2015 Copyright (c) 1982, 2009, Oracle and/or its affiliates.
All rights reserved.
connected to target database: CRMS (DBID=1570419964) The SHOW ALL command to display the current value of RMAN configured settings for the target database. Let’s first take a look at RMAN default settings. RMAN> SHOW ALL; using target database control file instead of recovery catalog RMAN configuration parameters for database with db_unique_name CRMS are: CONFIGURE RETENTION POLICY TO REDUNDANCY 2; CONFIGURE BACKUP OPTIMIZATION OFF; # default CONFIGURE DEFAULT DEVICE TYPE TO DISK; # default CONFIGURE CONTROLFILE AUTOBACKUP OFF; # default CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '%F'; # default CONFIGURE DEVICE TYPE DISK BACKUP TYPE TO COMPRESSED BACKUPSET PARALLELISM 1; CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default CONFIGURE ARCHIVELOG BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default CONFIGURE MAXSETSIZE TO UNLIMITED; # default CONFIGURE ENCRYPTION FOR DATABASE OFF; # default CONFIGURE ENCRYPTION ALGORITHM 'AES128'; # default CONFIGURE COMPRESSION ALGORITHM 'BASIC' AS OF RELEASE 'DEFAULT' OPTIMIZE FOR LOAD TRUE; # default CONFIGURE ARCHIVELOG DELETION POLICY TO NONE; # default CONFIGURE SNAPSHOT CONTROLFILE NAME TO '/u02/app/.../11.2.0/dbhome_1/dbs/snapcf_crms.f'; #default RMAN> show controlfile autobackup; RMAN configuration parameters for database with db_unique_name CRMS are: CONFIGURE CONTROLFILE AUTOBACKUP OFF; # default If the CONFIGURE CONTROLFILE AUTOBACKUP is set to ON (by default it is OFF), then RMAN automatically backs up the control file & server parameter file for each rman backup. If the database was started with an spfile, but the CONTROLFILE AUTOBACKUP is NOT enabled, then the controlfile & spfile both are automatically included when SYSTEM DATAFILE is backed up. Once we enable CONTROLFILE AUTOBACKUP ON, RMAN writes the control file and SPFILE to a separate autobackup backup set. If CONTROLFILE AUTOBACKUP OFF, RMAN includes the current control file and SPFILE in the same backup set as the datafiles. Oracle recommends enabling CONTROLFILE AUTOBACKUP ON because with a controlfile autobackup, so rman can recover the database even if the current controlfile, recovery catalog & server parameter file are inaccessible.
Exploring the Oracle DBA Technology by Gunasekaran ,Thiyagu
LOSS OF FULL DATABASE AND DATABASE RECOVERY | ORACLE 11g
CONNECTING TARGET DATABASE SYS> select name, dbid from v$database; NAME DBID --------- ---------CRMS 1570419964 SYS> show parameter pfile; NAME TYPE VALUE ------------------------------------ ----------- --------------------------------------------spfile string /u02/app/oracle/../dbhome_1/dbs/spfilecrms.ora SYS> select * from v$block_change_tracking; STATUS
FILENAME
BYTES
---------- -------------------------------------ENABLED
/u02/app/oracle/oradata/crms/track.dbf
-------------------------------11599872
SYS> show parameter db_recovery_file_dest; NAME TYPE VALUE ------------------------------------ ----------- ---------------------------------db_recovery_file_dest
string
/u02/app/oracle/flash_recovery_area
db_recovery_file_dest_size
big integer
8852M
TAKE LEVEL 0 INCREMENTAL BACKUP RMAN> backup incremental level 0 database plus archivelog 2> delete all input tag "LEVEL-0-FULL-BACKUP"; Starting backup at 31-JAN-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=52 RECID=360 STAMP=870438209 channel ORA_DISK_1: starting piece 1 at 31-JAN-15 channel ORA_DISK_1: finished piece 1 at 31-JAN-15 piece handle=/u02/app/oracle/flash_recovery_area/CRMS/backupset/2015_01_31/o1_mf_annnn_LEVEL_0_FULL_BA CKUP_bdryzb5t_.bkp tag=LEVEL-0-FULL-BACKUP comment=NONE channel ORA_DISK_1: backup set complete, elapsed time: 00:00:01 channel ORA_DISK_1: deleting archived log(s) archived log file name=/u02/app/oracle/flash_recovery_area/CRMS/archivelog/2015_01_31/o1_mf_1_52_bdryz9x8_.arc RECID=360 STAMP=870438209 Finished backup at 31-JAN-15 Starting backup at 31-JAN-15 using channel ORA_DISK_1 channel ORA_DISK_1: starting compressed incremental level 0 datafile backup set channel ORA_DISK_1: specifying datafile(s) in backup set
Exploring the Oracle DBA Technology by Gunasekaran ,Thiyagu
LOSS OF FULL DATABASE AND DATABASE RECOVERY | ORACLE 11g
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/bpms01.dbf channel ORA_DISK_1: starting piece 1 at 31-JAN-15 channel ORA_DISK_1: finished piece 1 at 31-JAN-15 piece handle=/u02/app/oracle/flash_recovery_area/CRMS/backupset/2015_01_31/o1_mf_nnnd0_TAG20150131T122 331_bdryzct1_.bkp tag=TAG20150131T122331 comment=NONE channel ORA_DISK_1: backup set complete, elapsed time: 00:00:45 channel ORA_DISK_1: starting compressed incremental level 0 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 31-JAN-15 channel ORA_DISK_1: finished piece 1 at 31-JAN-15 piece handle=/u02/app/oracle/flash_recovery_area/CRMS/backupset/2015_01_31/o1_mf_ncsn0_TAG20150131T122 331_bdrz0t08_.bkp tag=TAG20150131T122331 comment=NONE channel ORA_DISK_1: backup set complete, elapsed time: 00:00:02 Finished backup at 31-JAN-15
Starting backup at 31-JAN-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=53 RECID=361 STAMP=870438259 channel ORA_DISK_1: starting piece 1 at 31-JAN-15 channel ORA_DISK_1: finished piece 1 at 31-JAN-15 piece handle=/u02/app/oracle/flash_recovery_area/CRMS/backupset/2015_01_31/o1_mf_annnn_LEVEL_0_FULL_BA CKUP_bdrz0vhq_.bkp tag=LEVEL-0-FULL-BACKUP comment=NONE channel ORA_DISK_1: backup set complete, elapsed time: 00:00:01 channel ORA_DISK_1: deleting archived log(s) archived log file name=/u02/app/oracle/flash_recovery_area/CRMS/archivelog/2015_01_31/o1_mf_1_53_bdrz0v8k_.arc RECID=361 STAMP=870438259 Finished backup at 31-JAN-15 $ ls -l /u02/app/oracle/flash_recovery_area/CRMS/backupset/2015_01_31/ -rw-r-----
1 oracle oinstall
2560 Jan 31 12:23 o1_mf_annnn_LEVEL_0_FULL_BACKUP_bdryzb5t_.bkp
-rw-r-----
1 oracle oinstall
14848 Jan 31 12:24 o1_mf_annnn_LEVEL_0_FULL_BACKUP_bdrz0vhq_.bkp
-rw-r-----
1 oracle oinstall
1294336 Jan 31 12:24 o1_mf_ncsn0_TAG20150131T122331_bdrz0t08_.bkp
-rw-r-----
1 oracle oinstall 274382848 Jan 31 12:24 o1_mf_nnnd0_TAG20150131T122331_bdryzct1_.bkp
Exploring the Oracle DBA Technology by Gunasekaran ,Thiyagu
LOSS OF FULL DATABASE AND DATABASE RECOVERY | ORACLE 11g
Backing up both the database plus archived logs, however, the archived logs will be copied first and the requested tag would be – “LEVEL-0-FULL-BACKUP″, then the archived logs will be deleted as per deletion policy configuration. When the database is backed up, the requested tag is not used, so the actual database backup gets an RMAN generated tag (TAG20150131T122331) and NOT the one we wanted. The current redo log is then archived & backed up – got the requested tag “LEVEL-0-FULL-BACKUP. Finally the controlfile & spfile are backed up according to the autobackup policy and again, got an RMAN generated tag. Requested tag is only applied to the first backupset in the backup. o1_mf_annnn_LEVEL_0_FULL_BACKUP_bdryzb5t_.bkp
LEVEL-0-FULL-BACKUP
Requested Tag
o1_mf_annnn_LEVEL_0_FULL_BACKUP_bdrz0vhq_.bkp
LEVEL-0-FULL-BACKUP
Requested Tag
o1_mf_ncsn0_TAG20150131T122331_bdrz0t08_.bkp
TAG20150131T122331
Rman Generated Tag
o1_mf_nnnd0_TAG20150131T122331_bdryzct1_.bkp
TAG20150131T122331
Rman Generated Tag
I hope you can understand clearly when performing recovery, why we discuss backupsets & tagnames here.
I make some changes in the target database such as creating new users and creating new tables. SYS> grant connect, resource to user1 identified by user1; Grant succeeded. SYS> alter user user1 default tablespace hrms; User altered. SYS> conn user1/user1; Connected. USER1> create table tab1 as select * from user_objects; Table created. USER1> create table tab2 as select * from user_objects; Table created. I have made some changes to tables in the user1 schema. So my database is having newly changed blocks. Now it is ready for incremental level 1 backup. TAKE LEVEL 1 INCREMENTAL BACKUP – 1st TIME RMAN> backup incremental level 1 database tag "LEVEL-1-BACKUP-1"; Starting backup at 31-JAN-15 using channel ORA_DISK_1 channel ORA_DISK_1: starting compressed incremental level 1 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/bpms01.dbf channel ORA_DISK_1: starting piece 1 at 31-JAN-15
Exploring the Oracle DBA Technology by Gunasekaran ,Thiyagu
LOSS OF FULL DATABASE AND DATABASE RECOVERY | ORACLE 11g
channel ORA_DISK_1: finished piece 1 at 31-JAN-15 piece handle=/u02/app/oracle/flash_recovery_area/CRMS/backupset/2015_01_31/o1_mf_nnnd1_LEVEL_1_BACKUP_ 1_bdrzc4z4_.bkp tag=LEVEL-1-BACKUP-1 comment=NONE channel ORA_DISK_1: backup set complete, elapsed time: 00:00:01 channel ORA_DISK_1: starting compressed incremental level 1 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 31-JAN-15 channel ORA_DISK_1: finished piece 1 at 31-JAN-15 piece handle=/u02/app/oracle/flash_recovery_area/CRMS/backupset/2015_01_31/o1_mf_ncsn1_LEVEL_1_BACKUP_ 1_bdrzc76t_.bkp tag=LEVEL-1-BACKUP-1 comment=NONE channel ORA_DISK_1: backup set complete, elapsed time: 00:00:01 Finished backup at 31-JAN-15
SYS> create user user2 identified by user2 default tablespace hrms; User created. SYS> grant connect, resource to user2; Grant succeeded. SYS> conn user2/user2 Connected. USER2> create table tab1 as select * from user_objects; Table created. USER2> create table tab2 as select * from user_objects; Table created. I have made some changes to tables in the user2 schema. So my database is having newly changed blocks. Now it is ready for incremental level 1 backup. TAKE LEVEL 1 INCREMENTAL BACKUP – (2nd TIME) RMAN> backup incremental level 1 database tag "LEVEL-1-BACKUP-2"; Starting backup at 31-JAN-15 using channel ORA_DISK_1 channel ORA_DISK_1: starting compressed incremental level 1 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/bpms01.dbf channel ORA_DISK_1: starting piece 1 at 31-JAN-15
Exploring the Oracle DBA Technology by Gunasekaran ,Thiyagu
LOSS OF FULL DATABASE AND DATABASE RECOVERY | ORACLE 11g
channel ORA_DISK_1: finished piece 1 at 31-JAN-15 piece handle=/u02/app/oracle/flash_recovery_area/CRMS/backupset/2015_01_31/o1_mf_nnnd1_LEVEL_1_BACKUP_2 _bdrzt872_.bkp tag=LEVEL-1-BACKUP-2 comment=NONE channel ORA_DISK_1: backup set complete, elapsed time: 00:00:01 channel ORA_DISK_1: starting compressed incremental level 1 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 31-JAN-15 channel ORA_DISK_1: finished piece 1 at 31-JAN-15 piece handle=/u02/app/oracle/flash_recovery_area/CRMS/backupset/2015_01_31/o1_mf_ncsn1_LEVEL_1_BACKUP_ 2_bdrztbhc_.bkp tag=LEVEL-1-BACKUP-2 comment=NONE channel ORA_DISK_1: backup set complete, elapsed time: 00:00:01 Finished backup at 31-JAN-15 Again i make some changes in the target database such as creating new user and creating new tables for next level(cumulative) backup. SYS> create user user3 identified by user3; User created. SYS> grant connect, resource to user3; Grant succeeded. SYS> alter user user3 default tablespace bpms; User altered. SYS> conn user3/user3 Connected. USER3> create table tab1 as select * from user_objects; Table created. USER3> create table tab2 as select * from user_objects; Table created. SYS> select username, default_tablespace from dba_users where username like 'USER%'; USERNAME
DEFAULT_TABLESPACE
------------------------------ -------------------USER2
HRMS
USER1
CRMS
USER3
BPMS
SYS> conn user1/user1 Connected. USER1> create table tab3 as select * from user_objects; Table created. SYS> conn user2/user2 Connected.
Exploring the Oracle DBA Technology by Gunasekaran ,Thiyagu
LOSS OF FULL DATABASE AND DATABASE RECOVERY | ORACLE 11g
USER2> create table tab3 as select * from user_objects; Table created. SYS> conn user3/user3 Connected. USER3> create table tab3 as select * from user_objects; Table created.
TAKE LEVEL 1 CUMULATIVE BACKUP Now I am ready to take a cumulative incremental backup, which will create a new backup consisting of all the blocks that changed since the previous level zero backup. RMAN> backup incremental level 1 cumulative database tag "LEVEL-1-CUMULATIVE-I"; Starting backup at 31-JAN-15 using channel ORA_DISK_1 channel ORA_DISK_1: starting compressed incremental level 1 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/bpms01.dbf channel ORA_DISK_1: starting piece 1 at 31-JAN-15 channel ORA_DISK_1: finished piece 1 at 31-JAN-15 piece handle=/u02/app/oracle/flash_recovery_area/CRMS/backupset/2015_01_31/o1_mf_nnnd1__LEVEL_1_CUMULA TIVE__bds062s1_.bkp tag= LEVEL-1-CUMULATIVE-I comment=NONE channel ORA_DISK_1: backup set complete, elapsed time: 00:00:01 channel ORA_DISK_1: starting compressed incremental level 1 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 31-JAN-15 channel ORA_DISK_1: finished piece 1 at 31-JAN-15 piece handle=/u02/app/oracle/flash_recovery_area/CRMS/backupset/2015_01_31/o1_mf_ncsn1__LEVEL_1_CUMULA TIVE__bds064x2_.bkp tag= LEVEL-1-CUMULATIVE-I comment=NONE channel ORA_DISK_1: backup set complete, elapsed time: 00:00:01 Finished backup at 31-JAN-15 SYS> select username, default_tablespace from dba_users where username='SCOTT'; USERNAME
DEFAULT_TABLESPACE
------------------------------ -----------------------------SCOTT
USERS
Exploring the Oracle DBA Technology by Gunasekaran ,Thiyagu
LOSS OF FULL DATABASE AND DATABASE RECOVERY | ORACLE 11g
SYS> conn scott/tiger Connected. SCOTT> create table tab1(id number, name varchar2(15), salary number, mobile number, city varchar2(15)); Table created. SCOTT> BEGIN 2 for i in 1..200000 loop 3 insert into tab1 values(i ,'sam',30000,9999999999,'calcutta'); 4 commit; 5 end loop; 6 end; 7 / PL/SQL procedure successfully completed. SCOTT> select count(*) from tab1; COUNT(*) --------200000 Now I can take another level 1 differential backup, I’ll get only the changed blocks since from last level 1 cumulative backup. Let’s start. TAKE LEVEL 1 INCREMENTAL BACKUP – 3rd TIME
RMAN> backup incremental level 1 database tag "LEVEL-1-BACKUP-3"; Starting backup at 31-JAN-15 using channel ORA_DISK_1 channel ORA_DISK_1: starting compressed incremental level 1 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/bpms01.dbf channel ORA_DISK_1: starting piece 1 at 31-JAN-15 channel ORA_DISK_1: finished piece 1 at 31-JAN-15 piece handle=/u02/app/oracle/flash_recovery_area/CRMS/backupset/2015_01_31/o1_mf_nnnd1_LEVEL_1_BACKUP_ 3_bds0x448_.bkp tag=LEVEL-1-BACKUP-3 comment=NONE channel ORA_DISK_1: backup set complete, elapsed time: 00:00:07 channel ORA_DISK_1: starting compressed incremental level 1 datafile backup set channel ORA_DISK_1: specifying datafile(s) in backup set including current control file in backup set
Exploring the Oracle DBA Technology by Gunasekaran ,Thiyagu
LOSS OF FULL DATABASE AND DATABASE RECOVERY | ORACLE 11g
including current SPFILE in backup set channel ORA_DISK_1: starting piece 1 at 31-JAN-15 channel ORA_DISK_1: finished piece 1 at 31-JAN-15 piece handle=/u02/app/oracle/flash_recovery_area/CRMS/backupset/2015_01_31/o1_mf_ncsn1_LEVEL_1_BACKUP_ 3_bds0xddz_.bkp tag=LEVEL-1-BACKUP-3 comment=NONE channel ORA_DISK_1: backup set complete, elapsed time: 00:00:01 Finished backup at 31-JAN-15 After Level 1 incremental backup i am updating few transactions in scott schema but I do NOT have any rman backup for latest transactions. SCOTT> update tab1 set name='SAMUELS'; 200000 rows updated. SCOTT> commit; Commit complete. SCOTT> create table tab2 as select * from tab1; Table created. LETS CHECK ALL BACKUP DETAILS RMAN> list backup summary; List of Backups ===============
Key TY LV S Device Type Completion Time #Pieces #Copies Compressed Tag ------- -- -- - ----------- --------------- ------- ------- ---------- --431
B
A
A DISK
31-JAN-15
1
1
YES
LEVEL-0-FULL-BACKUP
432
B
0
A DISK
31-JAN-15
1
1
YES
TAG20150131T122331
433
B
1
A DISK
31-JAN-15
1
1
YES
LEVEL-1-BACKUP-1
434
B
0
A DISK
31-JAN-15
1
1
YES
TAG20150131T122331
435
B
1
A DISK
31-JAN-15
1
1
YES
LEVEL-1-CUMULATIVE-I
436
B
1
A DISK
31-JAN-15
1
1
YES
LEVEL-1-CUMULATIVE-I
437
B
1
A DISK
31-JAN-15
1
1
YES
LEVEL-1-BACKUP-2
438
B
1
A DISK
31-JAN-15
1
1
YES
LEVEL-1-BACKUP-1
439
B
1
A DISK
31-JAN-15
1
1
YES
LEVEL-1-BACKUP-2
440
B
A
A DISK
31-JAN-15
1
1
YES
LEVEL-0-FULL-BACKUP
441
B
1
A DISK
31-JAN-15
1
1
YES
LEVEL-1-BACKUP-3
442
B
1
A DISK
31-JAN-15
1
1
YES
LEVEL-1-BACKUP-3
RMAN> list backup; List of Backup Sets =================== BS Key Size Device Type Elapsed Time Completion Time ------- ---------- ----------- ------------ --------------431 2.00K DISK 00:00:00 31-JAN-15 BP Key: 442
Status: AVAILABLE
Compressed: YES
Tag: LEVEL-0-FULL-BACKUP
Exploring the Oracle DBA Technology by Gunasekaran ,Thiyagu
LOSS OF FULL DATABASE AND DATABASE RECOVERY | ORACLE 11g
Piece Name: /u02/app/oracle/flash_recovery_area/CRMS/backupset/2015_01_31/o1_mf_annnn_LEVEL_0_FULL_BACKUP_bd ryzb5t_.bkp List of Archived Logs in backup set 431 Thrd Seq
Low SCN
Low Time
Next SCN
Next Time
---- ------- ---------- --------- ---------- --------1 52 2552104 31-JAN-15 2552146 31-JAN-15
BS Key
Type LV Size
Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ --------------432
Incr 0
261.66M
BP Key: 443
DISK
00:00:41
Status: AVAILABLE
31-JAN-15
Compressed: YES
Tag: TAG20150131T122331
Piece Name: /u02/app/oracle/flash_recovery_area/CRMS/backupset/2015_01_31/o1_mf_nnnd0_TAG20150131T122331_bdr yzct1_.bkp List of Datafiles in backup set 432 File LV Type Ckp SCN
Ckp Time
Name
---- -- ---- ---------- --------- ---1
0
Incr 2552156
31-JAN-15 /u02/app/oracle/oradata/crms/system01.dbf
2
0
Incr 2552156
31-JAN-15 /u02/app/oracle/oradata/crms/sysaux01.dbf
3
0
Incr 2552156
31-JAN-15 /u02/app/oracle/oradata/crms/undotbs01.dbf
4
0
Incr 2552156
31-JAN-15 /u02/app/oracle/oradata/crms/users01.dbf
5
0
Incr 2552156
31-JAN-15 /u02/app/oracle/oradata/crms/crms01.dbf
6
0
Incr 2552156
31-JAN-15 /u02/app/oracle/oradata/crms/hrms01.dbf
7
0
Incr 2552156
31-JAN-15 /u02/app/oracle/oradata/crms/bpms01.dbf
BS Key
Type LV Size
Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ --------------433
Incr 1
1.22M
BP Key: 444
DISK
00:00:00
Status: AVAILABLE
31-JAN-15
Compressed: YES
Tag: LEVEL-1-BACKUP-1
Piece Name: /u02/app/oracle/flash_recovery_area/CRMS/backupset/2015_01_31/o1_mf_ncsn1_LEVEL_1_BACKUP_1_bdrzc 76t_.bkp SPFILE Included: Modification time: 31-JAN-15 SPFILE db_unique_name: CRMS Control File Included: Ckp SCN: 2552391
BS Key
Type LV Size
Ckp time: 31-JAN-15
Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ --------------434
Incr 0
1.22M
BP Key: 445
DISK
00:00:00
Status: AVAILABLE
31-JAN-15
Compressed: YES
Tag: TAG20150131T122331
Piece Name: /u02/app/oracle/flash_recovery_area/CRMS/backupset/2015_01_31/o1_mf_ncsn0_TAG20150131T122331_bdr z0t08_.bkp SPFILE Included: Modification time: 31-JAN-15 SPFILE db_unique_name: CRMS Control File Included: Ckp SCN: 2552184
Ckp time: 31-JAN-15
Exploring the Oracle DBA Technology by Gunasekaran ,Thiyagu
LOSS OF FULL DATABASE AND DATABASE RECOVERY | ORACLE 11g
BS Key
Type LV Size
Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ --------------435
Incr 1
1.58M
BP Key: 446
DISK
00:00:00
Status: AVAILABLE
31-JAN-15
Compressed: YES
Tag:
LEVEL-1-CUMULATIVE-I
Piece Name: /u02/app/oracle/flash_recovery_area/CRMS/backupset/2015_01_31/o1_mf_nnnd1__LEVEL_1_CUMULATIVE__b ds062s1_.bkp List of Datafiles in backup set 435 File LV Type Ckp SCN
Ckp Time
Name
---- -- ---- ---------- --------- ---1
1
Incr 2553420
31-JAN-15 /u02/app/oracle/oradata/crms/system01.dbf
2
1
Incr 2553420
31-JAN-15 /u02/app/oracle/oradata/crms/sysaux01.dbf
3
1
Incr 2553420
31-JAN-15 /u02/app/oracle/oradata/crms/undotbs01.dbf
4
1
Incr 2553420
31-JAN-15 /u02/app/oracle/oradata/crms/users01.dbf
5
1
Incr 2553420
31-JAN-15 /u02/app/oracle/oradata/crms/crms01.dbf
6
1
Incr 2553420
31-JAN-15 /u02/app/oracle/oradata/crms/hrms01.dbf
7
1
Incr 2553420
31-JAN-15 /u02/app/oracle/oradata/crms/bpms01.dbf
BS Key
Type LV Size
Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ --------------436
Incr 1
1.22M
BP Key: 447
DISK
00:00:00
Status: AVAILABLE
31-JAN-15
Compressed: YES
Tag:
LEVEL-1-CUMULATIVE-I
Piece Name: /u02/app/oracle/flash_recovery_area/CRMS/backupset/2015_01_31/o1_mf_ncsn1__LEVEL_1_CUMULATIVE__b ds064x2_.bkp SPFILE Included: Modification time: 31-JAN-15 SPFILE db_unique_name: CRMS Control File Included: Ckp SCN: 2553421
BS Key
Type LV Size
Ckp time: 31-JAN-15
Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ --------------437
Incr 1
1.48M
BP Key: 448
DISK
00:00:00
Status: AVAILABLE
31-JAN-15
Compressed: YES
Tag: LEVEL-1-BACKUP-2
Piece Name: /u02/app/oracle/flash_recovery_area/CRMS/backupset/2015_01_31/o1_mf_nnnd1_LEVEL_1_BACKUP_2_bdrzt 872_.bkp List of Datafiles in backup set 437 File LV Type Ckp SCN
Ckp Time
Name
---- -- ---- ---------- --------- ---1
1
Incr 2553122
31-JAN-15 /u02/app/oracle/oradata/crms/system01.dbf
2
1
Incr 2553122
31-JAN-15 /u02/app/oracle/oradata/crms/sysaux01.dbf
3
1
Incr 2553122
31-JAN-15 /u02/app/oracle/oradata/crms/undotbs01.dbf
4
1
Incr 2553122
31-JAN-15 /u02/app/oracle/oradata/crms/users01.dbf
5
1
Incr 2553122
31-JAN-15 /u02/app/oracle/oradata/crms/crms01.dbf
6
1
Incr 2553122
31-JAN-15 /u02/app/oracle/oradata/crms/hrms01.dbf
7
1
Incr 2553122
31-JAN-15 /u02/app/oracle/oradata/crms/bpms01.dbf
Exploring the Oracle DBA Technology by Gunasekaran ,Thiyagu
LOSS OF FULL DATABASE AND DATABASE RECOVERY | ORACLE 11g
BS Key
Type LV Size
Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ --------------438
Incr 1
632.00K
BP Key: 449
DISK
00:00:00
Status: AVAILABLE
31-JAN-15
Compressed: YES
Tag: LEVEL-1-BACKUP-1
Piece Name: /u02/app/oracle/flash_recovery_area/CRMS/backupset/2015_01_31/o1_mf_nnnd1_LEVEL_1_BACKUP_1_bdrzc 4z4_.bkp List of Datafiles in backup set 438 File LV Type Ckp SCN
Ckp Time
Name
---- -- ---- ---------- --------- ---1
1
Incr 2552389
31-JAN-15 /u02/app/oracle/oradata/crms/system01.dbf
2
1
Incr 2552389
31-JAN-15 /u02/app/oracle/oradata/crms/sysaux01.dbf
3
1
Incr 2552389
31-JAN-15 /u02/app/oracle/oradata/crms/undotbs01.dbf
4
1
Incr 2552389
31-JAN-15 /u02/app/oracle/oradata/crms/users01.dbf
5
1
Incr 2552389
31-JAN-15 /u02/app/oracle/oradata/crms/crms01.dbf
6
1
Incr 2552389
31-JAN-15 /u02/app/oracle/oradata/crms/hrms01.dbf
7
1
Incr 2552389
31-JAN-15 /u02/app/oracle/oradata/crms/bpms01.dbf
BS Key
Type LV Size
Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ --------------439
Incr 1
1.22M
BP Key: 450
DISK
00:00:00
Status: AVAILABLE
31-JAN-15
Compressed: YES
Tag: LEVEL-1-BACKUP-2
Piece Name: /u02/app/oracle/flash_recovery_area/CRMS/backupset/2015_01_31/o1_mf_ncsn1_LEVEL_1_BACKUP_2_bdrzt bhc_.bkp SPFILE Included: Modification time: 31-JAN-15 SPFILE db_unique_name: CRMS Control File Included: Ckp SCN: 2553124
BS Key
Size
Ckp time: 31-JAN-15
Device Type Elapsed Time Completion Time
------- ---------- ----------- ------------ --------------440
14.00K
DISK
BP Key: 451
00:00:00
31-JAN-15
Status: AVAILABLE
Compressed: YES
Tag: LEVEL-0-FULL-BACKUP
Piece Name: /u02/app/oracle/flash_recovery_area/CRMS/backupset/2015_01_31/o1_mf_annnn_LEVEL_0_FULL_BACKUP_bd rz0vhq_.bkp List of Archived Logs in backup set 440 Thrd Seq
Low SCN
Low Time
Next SCN
Next Time
---- ------- ---------- --------- ---------- --------1 BS Key
53
2552146
Type LV Size
31-JAN-15 2552190
31-JAN-15
Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ --------------441
Incr 1
1.22M
BP Key: 452
DISK Status: AVAILABLE
00:00:00
31-JAN-15
Compressed: YES
Tag: LEVEL-1-BACKUP-3
Piece Name: /u02/app/oracle/flash_recovery_area/CRMS/backupset/2015_01_31/o1_mf_ncsn1_LEVEL_1_BACKUP_3_bds0x ddz_.bkp
Exploring the Oracle DBA Technology by Gunasekaran ,Thiyagu
LOSS OF FULL DATABASE AND DATABASE RECOVERY | ORACLE 11g
SPFILE Included: Modification time: 31-JAN-15 SPFILE db_unique_name: CRMS Control File Included: Ckp SCN: 3280747
BS Key
Type LV Size
Ckp time: 31-JAN-15
Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ --------------442
Incr 1
24.21M
BP Key: 453
DISK
00:00:00
Status: AVAILABLE
31-JAN-15
Compressed: YES
Tag: LEVEL-1-BACKUP-3
Piece Name: /u02/app/oracle/flash_recovery_area/CRMS/backupset/2015_01_31/o1_mf_nnnd1_LEVEL_1_BACKUP_3_bds0x 448_.bkp List of Datafiles in backup set 442 File LV Type Ckp SCN
Ckp Time
Name
---- -- ---- ---------- --------- ---1
1
Incr 3280744
31-JAN-15 /u02/app/oracle/oradata/crms/system01.dbf
2
1
Incr 3280744
31-JAN-15 /u02/app/oracle/oradata/crms/sysaux01.dbf
3
1
Incr 3280744
31-JAN-15 /u02/app/oracle/oradata/crms/undotbs01.dbf
4
1
Incr 3280744
31-JAN-15 /u02/app/oracle/oradata/crms/users01.dbf
5
1
Incr 3280744
31-JAN-15 /u02/app/oracle/oradata/crms/crms01.dbf
6
1
Incr 3280744
31-JAN-15 /u02/app/oracle/oradata/crms/hrms01.dbf
7
1
Incr 3280744
31-JAN-15 /u02/app/oracle/oradata/crms/bpms01.dbf
RMAN> report schema; Report of database schema for database with db_unique_name CRMS List of Permanent Datafiles =========================== File Size(MB) Tablespace
RB segs Datafile Name
---- -------- -------------------- ------- -----------------------1
680
SYSTEM
***
/u02/app/oracle/oradata/crms/system01.dbf
2
540
SYSAUX
***
/u02/app/oracle/oradata/crms/sysaux01.dbf
3
1690
UNDOTBS1
***
/u02/app/oracle/oradata/crms/undotbs01.dbf
4
487
USERS
***
/u02/app/oracle/oradata/crms/users01.dbf
5
50
CRMS
***
/u02/app/oracle/oradata/crms/crms01.dbf
6
50
HRMS
***
/u02/app/oracle/oradata/crms/hrms01.dbf
7
50
BPMS
***
/u02/app/oracle/oradata/crms/bpms01.dbf
List of Temporary Files ======================= File Size(MB) Tablespace
Maxsize(MB) Tempfile Name
---- -------- -------------------- ----------- -------------------1
20
TEMP
32767
/u02/app/oracle/oradata/crms/temp01.dbf
DELETING ALL FILES AT OS LEVEL MANUALLY $ cd
/u02/app/oracle/flash_recovery_area/crms/
$ rm * $ cd /u02/app/oracle/oradata/crms $ rm *
Exploring the Oracle DBA Technology by Gunasekaran ,Thiyagu
LOSS OF FULL DATABASE AND DATABASE RECOVERY | ORACLE 11g
$ export ORACLE_SID=crms $ rlrman target / Recovery Manager: Release 11.2.0.1.0 - Production on Sat Jan 31 13:18:47 2015 Copyright (c) 1982, 2009, Oracle and/or its affiliates.
All rights reserved.
RMAN-00571: =========================================================== RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS =============== RMAN-00571: =========================================================== RMAN-00554: initialization of internal recovery manager package failed RMAN-06003: ORACLE error from target database: ORA-00210: cannot open the specified control file ORA-00202: control file: '/u02/app/oracle/oradata/crms/control01.ctl' ORA-27041: unable to open file Linux Error: 2: No such file or directory Additional information: 3 STARTING DATABASE RECOVERY THROUGH RMAN BACKUP $ export ORACLE_SID=crms $ rlsqlplus "/as sysdba" SQL*Plus: Release 11.2.0.1.0 Production on Sat Jan 31 13:27:50 2015 Copyright (c) 1982, 2009, Oracle.
All rights reserved.
Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production With the Partitioning, OLAP, Data Mining and Real Application Testing options SYS> shut abort; ORACLE instance shut down. STARTING THE TARGET DATABASE INSTANCE AT NOMOUNT STAGE SYS> startup nomount; ORACLE instance started. Total System Global Area 1255473152 bytes Fixed Size
1336232 bytes
Variable Size
788532312 bytes
Database Buffers
452984832 bytes
Redo Buffers
12619776 bytes
SYS> select status from v$instance; STATUS -------STARTED SYS> show parameter pfile; NAME --------spfile
TYPE -------string
VALUE -----------------------------------------------------------/u02/app/oracle/product/11.2.0/dbhome_1/dbs/spfilecrms.ora
Exploring the Oracle DBA Technology by Gunasekaran ,Thiyagu
LOSS OF FULL DATABASE AND DATABASE RECOVERY | ORACLE 11g
$ rlrman target / Recovery Manager: Release 11.2.0.1.0 - Production on Sat Jan 31 13:28:58 2015 Copyright (c) 1982, 2009, Oracle and/or its affiliates.
All rights reserved.
connected to target database: CRMS (not mounted) RMAN> restore controlfile from autobackup; Starting restore at 31-JAN-15 using target database control file instead of recovery catalog allocated channel: ORA_DISK_1 channel ORA_DISK_1: SID=20 device type=DISK recovery area destination: /u02/app/oracle/flash_recovery_area database name (or database unique name) used for search: CRMS channel ORA_DISK_1: no AUTOBACKUPS found in the recovery area AUTOBACKUP search with format "%F" not attempted because DBID was not set RMAN-00571: =========================================================== RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS =============== RMAN-00571: =========================================================== RMAN-03002: failure of restore command at 01/31/2015 13:29:15 RMAN-06172: no AUTOBACKUP found or specified handle is not a valid copy or piece RMAN> show controlfile autobackup; RMAN configuration parameters for database with db_unique_name CRMS are: CONFIGURE CONTROLFILE AUTOBACKUP OFF; # default I remember Even though CONTROLFILE AUTOBACKUP is NOT enabled, the controlfile & spfile both are automatically included when SYSTEM DATAFILE is backed up. CHECKING LEVEL 0 INCREMENTAL BACKUPSETS $ ls -l /u02/app/oracle/flash_recovery_area/CRMS/backupset/2015_01_31/ -rw-r-----
1 oracle oinstall
2560 Jan 31 12:23 o1_mf_annnn_LEVEL_0_FULL_BACKUP_bdryzb5t_.bkp
-rw-r-----
1 oracle oinstall
14848 Jan 31 12:24 o1_mf_annnn_LEVEL_0_FULL_BACKUP_bdrz0vhq_.bkp
-rw-r-----
1 oracle oinstall
1294336 Jan 31 12:24 o1_mf_ncsn0_TAG20150131T122331_bdrz0t08_.bkp
-rw-r-----
1 oracle oinstall 274382848 Jan 31 12:24 o1_mf_nnnd0_TAG20150131T122331_bdryzct1_.bkp
As I said above, the controlfile & spfile are backed up according to the backup policy and got an RMAN generated tag (TAG20150131T122331. RMAN includes the current control file and SPFILE in the same backup set as the datafiles. We can skip requested tag (LEVEL-0-FULL-BACKUP). RMAN> restore controlfile from '/u02/app/oracle/flash_recovery_area/CRMS/backupset/2015_01_31/ o1_mf_ncsn0_TAG20150131T122331_bdrz0t08_.bkp'; Starting restore at 01-FEB-15 using channel ORA_DISK_1 channel ORA_DISK_1: restoring control file channel ORA_DISK_1: restore complete, elapsed time: 00:00:17 output file name=/u02/app/oracle/oradata/crms/control01.ctl output file name=/u02/app/oracle/flash_recovery_area/crms/control02.ctl Finished restore at 01-FEB-15
Exploring the Oracle DBA Technology by Gunasekaran ,Thiyagu
LOSS OF FULL DATABASE AND DATABASE RECOVERY | ORACLE 11g
RMAN> alter database mount; database mounted RMAN> validate database; Starting validate at 01-FEB-15 Starting implicit crosscheck backup at 01-FEB-15 allocated channel: ORA_DISK_1 channel ORA_DISK_1: SID=19 device type=DISK Crosschecked 2 objects Finished implicit crosscheck backup at 01-FEB-15 Starting implicit crosscheck copy at 01-FEB-15 using channel ORA_DISK_1 Crosschecked 4 objects Finished implicit crosscheck copy at 01-FEB-15 searching for all files in the recovery area cataloging files... cataloging done List of Cataloged Files =======================
files.txt
using channel ORA_DISK_1 RMAN-06169: could not read file header for datafile 1 error reason 4 RMAN-00571: =========================================================== RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS =============== RMAN-00571: =========================================================== RMAN-03002: failure of validate command at 02/01/2015 10:49:00 RMAN-06056: could not access datafile 1 RMAN> list failure; List of Database Failures ========================= Failure ID Priority Status
Time Detected Summary
---------- -------- ------- ------------- ------19347
CRITICAL
OPEN
01-FEB-15
System datafile 1: '/u02/../../system01.dbf' is missing
19344
CRITICAL
OPEN
01-FEB-15
Control file needs media recovery
7988
HIGH
OPEN
01-FEB-15
One or more non-system datafiles are missing
RMAN> advise failure; List of Database Failures ========================= Failure ID Priority Status Time Detected Summary ---------- -------- ------- ------------- ------19347
CRITICAL
OPEN
01-FEB-15
System datafile 1: '/u02/../../system01.dbf' is missing
Exploring the Oracle DBA Technology by Gunasekaran ,Thiyagu
LOSS OF FULL DATABASE AND DATABASE RECOVERY | ORACLE 11g
19344
CRITICAL OPEN
01-FEB-15
Control file needs media recovery
7988
HIGH
01-FEB-15
One or more non-system datafiles are missing
OPEN
analyzing automatic repair options; this may take some time using channel ORA_DISK_1 analyzing automatic repair options complete Mandatory Manual Actions ======================== no manual actions available Optional Manual Actions ======================= 1. If you have the correct version of the control file, then shutdown the database and replace the old control file 2. If file /u02/app/oracle/oradata/crms/system01.dbf was unintentionally renamed or moved, restore it 3. If file /u02/app/oracle/oradata/crms/sysaux01.dbf was unintentionally renamed or moved, restore it 4. If file /u02/app/oracle/oradata/crms/undotbs01.dbf was unintentionally renamed or moved, restore it 5. If file /u02/app/oracle/oradata/crms/users01.dbf was unintentionally renamed or moved, restore it 6. If file /u02/app/oracle/oradata/crms/crms01.dbf was unintentionally renamed or moved, restore it 7. If file /u02/app/oracle/oradata/crms/hrms01.dbf was unintentionally renamed or moved, restore it 8. If file /u02/app/oracle/oradata/crms/bpms01.dbf was unintentionally renamed or moved, restore it Automated Repair Options ======================== Option Repair Description ------ -----------------1
Perform incomplete database recovery Strategy: The repair includes point-in-time recovery with some data loss Repair script: /u02/app/oracle/diag/rdbms/crms/crms/hm/reco_2134091970.hm
RMAN> repair failure; Strategy: The repair includes point-in-time recovery with some data loss Repair script: /u02/app/oracle/diag/rdbms/crms/crms/hm/reco_2134091970.hm contents of repair script: # database point-in-time recovery until a missing log restore database until scn 3281792; recover database until scn 3281792; alter database open resetlogs; Do you really want to execute the above repair (enter YES or NO)? yes executing repair script
Exploring the Oracle DBA Technology by Gunasekaran ,Thiyagu
LOSS OF FULL DATABASE AND DATABASE RECOVERY | ORACLE 11g
Starting restore at 01-FEB-15 using channel ORA_DISK_1 channel ORA_DISK_1: starting datafile backup set restore channel ORA_DISK_1: specifying datafile(s) to restore from backup set channel ORA_DISK_1: restoring datafile 00001 to /u02/app/oracle/oradata/crms/system01.dbf channel ORA_DISK_1: restoring datafile 00002 to /u02/app/oracle/oradata/crms/sysaux01.dbf channel ORA_DISK_1: restoring datafile 00003 to /u02/app/oracle/oradata/crms/undotbs01.dbf channel ORA_DISK_1: restoring datafile 00004 to /u02/app/oracle/oradata/crms/users01.dbf channel ORA_DISK_1: restoring datafile 00005 to /u02/app/oracle/oradata/crms/crms01.dbf channel ORA_DISK_1: restoring datafile 00006 to /u02/app/oracle/oradata/crms/hrms01.dbf channel ORA_DISK_1: restoring datafile 00007 to /u02/app/oracle/oradata/crms/bpms01.dbf channel ORA_DISK_1: reading from backup piece /u02/app/oracle/flash_recovery_area/CRMS/backupset/2015_01_31/o1_mf_nnnd0_TAG20150131T122331_bdr yzct1_.bkp channel ORA_DISK_1: piece handle=/u02/app/oracle/flash_recovery_area/CRMS/backupset/2015_01_31/o1_mf_nnnd0_TAG20150131T122 331_bdryzct1_.bkp tag=TAG20150131T122331 channel ORA_DISK_1: restored backup piece 1 channel ORA_DISK_1: restore complete, elapsed time: 00:06:17 Finished restore at 01-FEB-15 Starting recover at 01-FEB-15 using channel ORA_DISK_1 channel ORA_DISK_1: starting incremental datafile backup set restore channel ORA_DISK_1: specifying datafile(s) to restore from backup set destination for restore of datafile 00001: /u02/app/oracle/oradata/crms/system01.dbf destination for restore of datafile 00002: /u02/app/oracle/oradata/crms/sysaux01.dbf destination for restore of datafile 00003: /u02/app/oracle/oradata/crms/undotbs01.dbf destination for restore of datafile 00004: /u02/app/oracle/oradata/crms/users01.dbf destination for restore of datafile 00005: /u02/app/oracle/oradata/crms/crms01.dbf destination for restore of datafile 00006: /u02/app/oracle/oradata/crms/hrms01.dbf destination for restore of datafile 00007: /u02/app/oracle/oradata/crms/bpms01.dbf channel ORA_DISK_1: reading from backup piece /u02/app/oracle/flash_recovery_area/CRMS/backupset/2015_01_31/o1_mf_nnnd1__LEVEL_1_CUMULATIVE__b ds062s1_.bkp channel ORA_DISK_1: piece handle=/u02/app/oracle/flash_recovery_area/CRMS/backupset/2015_01_31/o1_mf_nnnd1__LEVEL_1_CUMULA TIVE__bds062s1_.bkp tag= LEVEL-1-CUMULATIVE-I channel ORA_DISK_1: restored backup piece 1 channel ORA_DISK_1: restore complete, elapsed time: 00:00:03 channel ORA_DISK_1: starting incremental datafile backup set restore channel ORA_DISK_1: specifying datafile(s) to restore from backup set destination for restore of datafile 00001: /u02/app/oracle/oradata/crms/system01.dbf destination for restore of datafile 00002: /u02/app/oracle/oradata/crms/sysaux01.dbf destination for restore of datafile 00003: /u02/app/oracle/oradata/crms/undotbs01.dbf destination for restore of datafile 00004: /u02/app/oracle/oradata/crms/users01.dbf destination for restore of datafile 00005: /u02/app/oracle/oradata/crms/crms01.dbf destination for restore of datafile 00006: /u02/app/oracle/oradata/crms/hrms01.dbf
Exploring the Oracle DBA Technology by Gunasekaran ,Thiyagu
LOSS OF FULL DATABASE AND DATABASE RECOVERY | ORACLE 11g
destination for restore of datafile 00007: /u02/app/oracle/oradata/crms/bpms01.dbf channel ORA_DISK_1: reading from backup piece /u02/app/oracle/flash_recovery_area/CRMS/backupset/2015_01_31/o1_mf_nnnd1_LEVEL_1_BACKUP_3_bds0x 448_.bkp channel ORA_DISK_1: piece handle=/u02/app/oracle/flash_recovery_area/CRMS/backupset/2015_01_31/o1_mf_nnnd1_LEVEL_1_BACKUP_ 3_bds0x448_.bkp tag=LEVEL-1-BACKUP-3 channel ORA_DISK_1: restored backup piece 1 channel ORA_DISK_1: restore complete, elapsed time: 00:00:15 starting media recovery archived log for thread 1 with sequence 54 is already on disk as file /u02/app/oracle/flash_recovery_area/CRMS/archivelog/2015_01_31/o1_mf_1_54_bds0gp0f_.arc archived log for thread 1 with sequence 55 is already on disk as file /u02/app/oracle/flash_recovery_area/CRMS/archivelog/2015_01_31/o1_mf_1_55_bds0gxhk_.arc archived log for thread 1 with sequence 56 is already on disk as file /u02/app/oracle/flash_recovery_area/CRMS/archivelog/2015_01_31/o1_mf_1_56_bds0jyq5_.arc archived log for thread 1 with sequence 57 is already on disk as file /u02/app/oracle/flash_recovery_area/CRMS/archivelog/2015_01_31/o1_mf_1_57_bds0k8ms_.arc archived log for thread 1 with sequence 58 is already on disk as file /u02/app/oracle/flash_recovery_area/CRMS/archivelog/2015_01_31/o1_mf_1_58_bds0knfm_.arc archived log for thread 1 with sequence 59 is already on disk as file /u02/app/oracle/flash_recovery_area/CRMS/archivelog/2015_01_31/o1_mf_1_59_bds0m4nd_.arc archived log for thread 1 with sequence 60 is already on disk as file /u02/app/oracle/flash_recovery_area/CRMS/archivelog/2015_01_31/o1_mf_1_60_bds0mjgx_.arc archived log for thread 1 with sequence 61 is already on disk as file /u02/app/oracle/flash_recovery_area/CRMS/archivelog/2015_01_31/o1_mf_1_61_bds0mwor_.arc archived log for thread 1 with sequence 62 is already on disk as file /u02/app/oracle/flash_recovery_area/CRMS/archivelog/2015_01_31/o1_mf_1_62_bds0o13m_.arc archived log for thread 1 with sequence 63 is already on disk as file /u02/app/oracle/flash_recovery_area/CRMS/archivelog/2015_01_31/o1_mf_1_63_bds0p5ph_.arc archived log for thread 1 with sequence 64 is already on disk as file /u02/app/oracle/flash_recovery_area/CRMS/archivelog/2015_01_31/o1_mf_1_64_bds0zjvq_.arc archived log for thread 1 with sequence 65 is already on disk as file /u02/app/oracle/flash_recovery_area/CRMS/archivelog/2015_01_31/o1_mf_1_65_bds0zm3d_.arc channel ORA_DISK_1: starting archived log restore to default destination channel ORA_DISK_1: restoring archived log archived log thread=1 sequence=53 channel ORA_DISK_1: reading from backup piece /u02/app/oracle/flash_recovery_area/CRMS/backupset/2015_01_31/o1_mf_annnn_LEVEL_0_FULL_BACKUP_bd rz0vhq_.bkp channel ORA_DISK_1: piece handle=/u02/app/oracle/flash_recovery_area/CRMS/backupset/2015_01_31/o1_mf_annnn_LEVEL_0_FULL_BA CKUP_bdrz0vhq_.bkp tag=LEVEL-0-FULL-BACKUP channel ORA_DISK_1: restored backup piece 1 channel ORA_DISK_1: restore complete, elapsed time: 00:00:01 archived log file name=/u02/app/oracle/flash_recovery_area/CRMS/archivelog/2015_01_31/o1_mf_1_54_bds0gp0f_.arc thread=1 sequence=54
Exploring the Oracle DBA Technology by Gunasekaran ,Thiyagu
LOSS OF FULL DATABASE AND DATABASE RECOVERY | ORACLE 11g
archived log file name=/u02/app/oracle/flash_recovery_area/CRMS/archivelog/2015_01_31/o1_mf_1_55_bds0gxhk_.arc thread=1 sequence=55 archived log file name=/u02/app/oracle/flash_recovery_area/CRMS/archivelog/2015_01_31/o1_mf_1_56_bds0jyq5_.arc thread=1 sequence=56 archived log file name=/u02/app/oracle/flash_recovery_area/CRMS/archivelog/2015_01_31/o1_mf_1_57_bds0k8ms_.arc thread=1 sequence=57 archived log file name=/u02/app/oracle/flash_recovery_area/CRMS/archivelog/2015_01_31/o1_mf_1_58_bds0knfm_.arc thread=1 sequence=58 archived log file name=/u02/app/oracle/flash_recovery_area/CRMS/archivelog/2015_01_31/o1_mf_1_59_bds0m4nd_.arc thread=1 sequence=59 archived log file name=/u02/app/oracle/flash_recovery_area/CRMS/archivelog/2015_01_31/o1_mf_1_60_bds0mjgx_.arc thread=1 sequence=60 archived log file name=/u02/app/oracle/flash_recovery_area/CRMS/archivelog/2015_01_31/o1_mf_1_61_bds0mwor_.arc thread=1 sequence=61 archived log file name=/u02/app/oracle/flash_recovery_area/CRMS/archivelog/2015_01_31/o1_mf_1_62_bds0o13m_.arc thread=1 sequence=62 archived log file name=/u02/app/oracle/flash_recovery_area/CRMS/archivelog/2015_01_31/o1_mf_1_63_bds0p5ph_.arc thread=1 sequence=63 archived log file name=/u02/app/oracle/flash_recovery_area/CRMS/archivelog/2015_01_31/o1_mf_1_64_bds0zjvq_.arc thread=1 sequence=64 archived log file name=/u02/app/oracle/flash_recovery_area/CRMS/archivelog/2015_01_31/o1_mf_1_65_bds0zm3d_.arc thread=1 sequence=65 media recovery complete, elapsed time: 00:00:43 Finished recover at 01-FEB-15 database opened repair failure complete archived log file name=/u02/app/oracle/flash_recovery_area/CRMS/archivelog/2015_02_01/o1_mf_1_53_bdvk30dq_.arc thread=1 sequence=53 channel default: deleting archived log(s) archived log file name=/u02/app/oracle/flash_recovery_area/CRMS/archivelog/2015_02_01/o1_mf_1_53_bdvk30dq_.arc RECID=373 STAMP=870522296 $ tail -f /u02/app/oracle/diag/rdbms/crms/crms/trace/alert_crms.log .. ...
[Trimmed] Media Recovery Log
Exploring the Oracle DBA Technology by Gunasekaran ,Thiyagu
LOSS OF FULL DATABASE AND DATABASE RECOVERY | ORACLE 11g
/u02/app/oracle/flash_recovery_area/CRMS/archivelog/2015_01_31/o1_mf_1_65_bds0zm3d_.arc Incomplete Recovery applied until change 3281792 time 01/31/2015 12:57:47 Media Recovery Complete (crms) Completed: alter database recover logfile '/u02/app/oracle/flash_recovery_area/CRMS/archivelog/2015_01_31/o1_mf_1_65_bds0zm3d_.arc' alter database open resetlogs CONNECT TARGET DATABASE $ rlsqlplus "/as sysdba" SQL*Plus: Release 11.2.0.1.0 Production on Sun Feb 1 11:57:52 2015 Copyright (c) 1982, 2009, Oracle.
All rights reserved.
Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production With the Partitioning, OLAP, Data Mining and Real Application Testing options SYS> select status from v$instance; STATUS -----------OPEN SYS> archive log list; Database log mode
Archive Mode
Automatic archival
Enabled
Archive destination
USE_DB_RECOVERY_FILE_DEST
Oldest online log sequence
1
Next log sequence to archive
2
Current log sequence
2
SYS> conn scott/tiger Connected. SCOTT> select count(*) from tab1; COUNT(*) -------200000 SCOTT> select count(*) from tab2; select count(*) from tab2 * ERROR at line 1: ORA-00942: table or view does not exist
WHY WE HAVE PERFORMED INCOMPLETE RECOVERY? After level 1 incremental backup (3rd - tag name is LEVEL-1-BACKUP-3), i made some transactions in the target database but NOT committed. While performing database recovery Oracle never allowed uncommitted transactions in the database. So we cannot perform complete recovery.
Exploring the Oracle DBA Technology by Gunasekaran ,Thiyagu
LOSS OF FULL DATABASE AND DATABASE RECOVERY | ORACLE 11g
HOW TO FIND DBID ? Sometimes you need to SET DBID before you RESTORE CONTROLFILE because Oracle uses the DBID to verify if the controlfile is for the same database. Let’s try how to find DBID? If the target database backup as compressed then following method NOT able to find DBID and backup is NOT compressed one, you can use this method. File name should contain system data file. $ strings backup_piece_file_name | grep MAXVALUE RMAN> list backup summary; using target database control file instead of recovery catalog List of Backups =============== Key
TY LV S Device Type Completion Time #Pieces #Copies Compressed Tag
------- -- -- - ----------- --------------- ------- ------- ---------- --655
B
A
A DISK
01-FEB-15
1
1
NO
LEVEL-0-FULL-BKP
656
B
0
A DISK
01-FEB-15
1
1
NO
TAG20150201T211333
657
B
1
A DISK
01-FEB-15
1
1
NO
LEVEL-1-BACKUP-I
658
B
A
A DISK
01-FEB-15
1
1
NO
LEVEL-0-FULL-BKP
659
B
1
A DISK
01-FEB-15
1
1
NO
LEVEL-1-BACKUP-II
660
B
1
A DISK
01-FEB-15
1
1
NO
LEVEL-1-BACKUP-I
661
B
1
A DISK
01-FEB-15
1
1
NO
LEVEL-1-BACKUP-II
662
B
1
A DISK
01-FEB-15
1
1
NO
LEVEL-1-CUMULATIVE-I
663
B
0
A DISK
01-FEB-15
1
1
NO
TAG20150201T211333
664
B
1
A DISK
01-FEB-15
1
1
NO
LEVEL-1-CUMULATIVE-I
$ ls -l /u02/app/oracle/flash_recovery_area/HRMS/backupset/2015_02_01/ total 1160884 -rw-r-----
1 oracle oinstall
2560 Feb
1 21:13 o1_mf_annnn_LEVEL_0_FULL_BKP_bdwlf4nt_.bkp
-rw-r-----
1 oracle oinstall
6656 Feb
1 21:14 o1_mf_annnn_LEVEL_0_FULL_BKP_bdwlg20n_.bkp
-rw-r-----
1 oracle oinstall
-rw-r-----
1 oracle oinstall
13828096 Feb
1 21:20 o1_mf_ncsn1_LEVEL_1_BACKUP_I_bdwlt3dl_.bkp
-rw-r-----
1 oracle oinstall
13828096 Feb
1 21:24 o1_mf_ncsn1_LEVEL_1_BACKUP_II_bdwm1pd7_.bkp
-rw-r----- 1 oracle oinstall
13828096 Feb
1 21:14 o1_mf_ncsn0_TAG20150201T211333_bdwlg0g9_.bkp
13828096 Feb 1 21:27 o1_mf_ncsn1_LEVEL_1_CUMULATIVE_I_bdwm7tvc_.bkp
-rw-r-----
1 oracle oinstall 1123893248 Feb
-rw-r-----
1 oracle oinstall
2088960 Feb
1 21:20 o1_mf_nnnd1_LEVEL_1_BACKUP_I_bdwlt1jz_.bkp
-rw-r-----
1 oracle oinstall
1687552 Feb
1 21:24 o1_mf_nnnd1_LEVEL_1_BACKUP_II_bdwm1n70_.bkp
-rw-r----- 1 oracle oinstall
1 21:13 o1_mf_nnnd0_TAG20150201T211333_bdwlf661_.bkp
4546560 Feb 1 21:27 o1_mf_nnnd1_LEVEL_1_CUMULATIVE_I_bdwm7rwl_.bkp
$ strings o1_mf_nnnd0_TAG20150201T211333_bdwlf661_.bkp | grep
MAXVALUE
.. ... [Trimmed] MAXVALUE, MAXVALUE, 917071677, MAXVALUE< 917071677, MAXVALUE< 917071677, MAXVALUE, 917071677, MAXVALUE< 917071677, MAXVALUE,
Exploring the Oracle DBA Technology by Gunasekaran ,Thiyagu
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