Backup & Recovery :: Corrupt Control File?
Dec 2, 2011
I've recently moved jobs and am doing a lot of the normal things getting familiar with my new company's databases.I was checking through our production backup logs and came across something that looks a little funny. From the last two days backups, I see:
select completion_time, marked_corrupt, media_corrupt, logically_corrupt
from v$backup_datafile
where controlfile_type = 'B'
order by completion_time desc
COMPLETION_TIME MARKED_CORRUPT MEDIA_CORRUPT LOGICALLY_CORRUPT
01/12/2011 11:27:252011 1201 2
01/12/2011 11:26:180 0 0
01/12/2011 11:25:242011 1201 1
01/12/2011 11:15:562011 1201 0
01/12/2011 01:40:100 0 0
30/11/2011 11:23:482011 1130 2
30/11/2011 11:22:440 0 0
30/11/2011 11:21:562011 1130 1
30/11/2011 11:13:002011 1130 0
30/11/2011 01:41:010 0 0
The 01:40 record will come from our nightly command:
BACKUP INCREMENTAL LEVEL=0 FILESPERSET=20 FORMAT 'full_%d_%t_%s_%p'
DATABASE INCLUDE CURRENT CONTROLFILE
The 11AM records will come from the command:
BACKUP INCREMENTAL LEVEL=0 FORMAT 'ctl_%t_%s_%p' CURRENT CONTROLFILE;
(I know backups shouldn't still be running at 11am and we don't need level 0 backups every night, that's a seperate issue I'll be addressing! ) I see there's been a similar entry here in v$backup_datafile for all backups that there's records for. The database is up and running just fine. There are no unusual errors being reported by the database in OEM or the alert log.I tried looking at both our control files (yes, should have 3 - something else I've listed to change!) with dbverify which showed no issues - though I'm not sure if this is designed to work with control files.
If so, how could I confirm whether it's an issue with a specific controlfile (I'm assuming it's not an issue with the backup to tape itself, as it's reporting the same corruption every day)?I'd obviously like to diagnose this now while the db is up and running, rather than at 4am some morning during a crash and finding out my backup control files are no good!
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Jan 25, 2011
i have an error with block corruption
Error: Corrupt block relative dba: 0x01c12a58 (file 7, block 76376)
What all the ,methods I can go for if we are working on a production environment with out any down time.
I can go for dbms repair package and restore and recover
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Sep 27, 2011
Suppose I take a multi stream backup, say 3 streams.
So if a control file is backed up in say backup set 1, so is the whole control file is backed up in one backup piece or it may span multiple pieces?
A backup set may have multiple backup pieces.
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Jul 11, 2012
I want to ask if I restore a control file from backup of say day2 and I recover till day1 using RMAN script, then what will be the state of my database? I mean day2 control file may be having SCN-Day2, and I am instructing RMAN to recover till past point in time that is SCN-Day1.
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Sep 18, 2012
On my stand by DB when I run the following command I get this error:
Is this line really needed based on my run block?
run
{
sql 'ALTER DATABASE BACKUP CONTROLFILE TO TRACE';
allocate channel t1 type 'SBT_TAPE'
[Code]....
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Dec 13, 2011
This is what I run
run {
CONFIGURE CONTROLFILE AUTOBACKUP ON;
CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '/dd_oraback/tkprod/%F';
CONFIGURE RETENTION POLICY TO RECOVERY WINDOW OF 22 DAYS;
sql 'alter system archive log current';
[code]...
So /dd_oraback is a Data Domain mount. Not sure if that makes any difference or not.
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Jan 26, 2012
I have an oracle autoback of controlfile and spfile. I am trying to restore the production database using this backup, into a new server with a different directory structure.
I have completed the following steps in the restore process.
1. Creating a pfile from spfile
2. Changing the the location of cdump, udump, bdump and the control files ( there are three )
3. Then creating a spfile from this pfile
I am stuck on the next step where to rename all the datafiles and tempfile and restore the database. Following is what I did.
After mounting the database in RMAN, tried to run the following.
RMAN> run
2> {
3> allocate channel c1 device type disk
4> ;
5> @/home/oracle/rman_scripts/newloc.rman
6> SET NEWNAME FOR DATAFILE 1 TO '/u02/oradata/dorian/system01.dbf';
7> SET NEWNAME FOR DATAFILE 2 TO '/u02/oradata/dorian/undotbs01.dbf';
8> SET NEWNAME FOR DATAFILE 3 TO '/u02/oradata/dorian/sysaux01.dbf';
9> SET NEWNAME FOR DATAFILE 4 TO '/u02/oradata/dorian/users01.dbf';
[code]....
I am getting the following error message.
Starting restore at 25-JAN-2012 21:26:48
released channel: c1
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of restore command at 01/25/2012 21:26:49
RMAN-06026: some targets not found - aborting restore
RMAN-06100: no channel to restore a backup or copy of datafile 30
RMAN-06100: no channel to restore a backup or copy of datafile 29
RMAN-06100: no channel to restore a backup or copy of datafile 28
[code]....
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Apr 3, 2013
I am trying to backup my control on a STBBY DB(RAC) and I am getting the ollowing error.
ORA-00245: control file backup failed; target is likely on a local file system
what the issue is? Note the FS is ACFS and can see on all my nodes
show all;
using target database control file instead of recovery catalog
RMAN configuration parameters for database with db_unique_name PA01INS_IM3L059B are:
CONFIGURE RETENTION POLICY TO REDUNDANCY 1; # default
CONFIGURE BACKUP OPTIMIZATION OFF; # default
[code]...
ACFS file system
df -h /share/dbbkup/oracle/PA01INS/rman
Filesystem Size Used Avail Use% Mounted on
/dev/asm/pa01ins-33 75G 2.6G 73G 4% /share/dbbkup/oracle/PA01INS
rman cmdfile=control.rman
[code]...
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Feb 10, 2011
I take hot backup of database at 10:00 am.After taking the hot backup 50 archived logs are created.Out of 50 i have backed up first 25 of them and at 5:00pm i lose complete database including control,data and the last 25 archived log files that were not backed up.So I am using latest hot backup to recover
I restore the control file backup and datafile backup taken during ho tbackup(10 am) and i issue the command
.......startup mount
>>>>>>>Recover database until cancel
!!!!!!! Apply the available 25 archive logs
then i give "cancel" since I dont have the next redo log .Now in which mode will the database open(Reset logs or no reset logs)
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Dec 9, 2011
I want to restore control file from backup set,just as the flowing command,where location does the control file be restored to? how can i specify the location when restore control file?
restore controlfile from '/u01/rman_backup/mybak/df_768589733_7_1.bak';
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May 28, 2012
taking the backup of a control file, as i am taking online backup, archive mode.
At first i have executed the statement
sql> alter database backup control file to trace;
then i have removed the control files and enterd some data in a table and committed it.As my oracle is not shutting down, so i shut aborted it. Now after saving the last file from the udump as obkp.sql i am unable to edit this file and use.
how to edit and use this file, so that i can startup my database normally.
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Jan 5, 2012
When i issue this command ,how many times to backup controlfile?
RMAN> BACKUP CURRENT CONTROLFILE INCLUDE CURRENT CONTROLFILE;
Is there difference between 'BACKUP CURRENT CONTROLFILE INCLUDE CURRENT CONTROLFILE' and 'BACKUP CURRENT CONTROLFILE'?
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Jul 14, 2011
have a repeatable technique for damaging a datafile block?
I need to demonstrate and contrast various recovery techniques, such as dbms_repair, RMAN block recovery, and Data Guard automatic block repair.
I'll end up with a shell script (or batch file) where I can enter a file number and block number, and wipe out that block.
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Dec 7, 2012
We're running 10.2.0.4 Database on AIX with no catalog Database.We keep all the backup info in controlfiles only.When we do that backup, we're able to successfully back it up (including archivelogs). But I'm unable to find any records in the controlfiles.
SQL> select * from V$BACKUP_SET;
no rows selected
and
SQL> sho parameter control
NAME TYPE VALUE
------------------------------------ ------------------------------
control_file_record_keep_time integer 14
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Jun 26, 2012
I've pasted some of the results of an RMAN backup that I ran. It says that it's backing up both the Control File and the SPFILE, but it appears that only one file is being created. Is this correct? How does this work? Are both files combined into the C-3843121877-20120619-00 file?
Starting Control File and SPFILE Autobackup at 19-JUN-12
piece handle=C:ORACLEPRODUCT10.2.0DATABASEC-3843121877-20120619-00 comment=NONE
Finished Control File and SPFILE Autobackup at 19-JUN-12
Also, regarding the below configuration of RMAN - I can change this directory to whatever I want, correct? In other words, is it just the directory where I am putting the backup?
CONFIGURE SNAPSHOT CONTROLFILE NAME TO 'C:ORACLEPRODUCT10.2.0DATABASESNCFPLDG.ORA'; # default
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Aug 3, 2011
Im trying to restore my spfile and (later controlfile) to a new location:
RMAN> connect catalog rman11cv/pwd@metarep
Connected...
RMAN> connect target
ansluten till msldatabasen: DATABASE (DBID=510270843)
RMAN> run
2> {
3> allocate channel ch1 type 'sbt_tape'
4> PARMS="BLKSIZE=262144,ENV=(CV_mmsApiVsn=2,CV_channelPar=ch1)"
5> TRACE 0;
6> Restore spfile to pfile 'y:
estorepfile.ora';
7> }
tilldelad kanal: ch1
kanal ch1: sid=537 devtype=SBT_TAPE
kanal ch1: CommVault Systems for Oracle: Version 9.0.0(BUILD84)
Starting restore at 2011-08-03
frigjord kanal: ch1
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: restore-command failed at 08/03/2011 11:39:26
ORA-27191: sbtinfo2 returned an error
The spfile and control file exists.
RMAN>list backup of spfile
BS-nyckel Typ N Storlek Enhetstyp Tidsσtgσng Slutf÷randetid
------- ---- -- ---------- ----------- ------------ --------------
736698 Full 256.00K SBT_TAPE 00:00:04 2011-08-02
BP-nyckel: 736705 Status: AVAILABLE Komprimerad: NO Tagg: TAG2011080
2T181240
Handtag: dkmj0i8p_1_1 Media: V_73870
SPFILE har inkluderats: Σndringstid: 2011-08-02
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May 17, 2012
In order for the following command to work:
> recover database using backup control file until cancel;
what command must precede it, is it:
> alter database backup control file to trace;
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Oct 22, 2013
I want to create binary copy of control file every time I do backup. I am using sql "alter database backup controlfile to ''+FRADG/TESTDB/controlfile/controlfile.ctl'' "; in my rman backup script. If I run it second time I got errors as it does does not allow to overwrite existing one.
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Oct 3, 2011
I have restored all datafile to new location (that is ASM) earlier it was on file system using set new name command (RMAN). Now when i'm trying to update control file with swicth command it is prompting error. Version is 11g R2.
RMAN> SWITCH DATAFILE ALL;
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-00558: error encountered while parsing input commands
RMAN-01009: syntax error: found "all": expecting one of: "double-quoted-string, integer, single-quoted-string"
RMAN-01007: at line 1 column 17 file: standard input
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May 9, 2011
We are trying to restore a database to a cold backup DBID.However while our datafiles were backuped up for 6 months retention we found out subsequent delete obsolete command wiped out the Control file related to this backup piece..Now what is left with this backup piece is just datafiles..
Can we still recover the database with a subsequent controlfile autobackup for the same DBID.?
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May 12, 2011
Can the control file be used to store scripts which are used to perform backups? I know the RMAN recovery catalog can.
Does the SHOW command display detailed reporting on the RMAN catalog contents other than configuration information?
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Mar 29, 2011
I've got a legacy SAP system with oracle 8i on Tru64. No changes at all are made but for legal reasons we have to keep it up and running.
we currently do a full backup monthly by shutting down oracle and doing a backup of all the files to tape and that takes around 12 hours.
If I stop doing the full backup and I only backup the control file and the archived redo log files every month and I had to restore the full database years from now, would I be able to restore the database using the last full monthly backup and use the latest control file and archived redo log files?
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Oct 23, 2012
I'm using database 11g & restore backup from another location.
RMAN> RESTORE CONTROLFILE FROM '/u01/RMAN/forstandby_0acekubq_1_1';
RMAN> catalog start with '/u01/RMAN/';
RMAN> restore database;
channel ORA_DISK_1: reading from backup piece /u01/RMAN/forstandby_09ceku8r_1_1
channel ORA_DISK_1: ORA-19870: error while restoring backup piece /u01/RMAN/forstandby_09ceku8r_1_1
ORA-19599: block number 782 is corrupt in backup piece /u01/RMAN/forstandby_09ceku8r_1_1
failover to previous backup
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of restore command at 10/23/2012 19:24:11
RMAN-06026: some targets not found - aborting restore
RMAN-06023: no backup or copy of datafile 4 found to restore
RMAN-06023: no backup or copy of datafile 3 found to restore
RMAN-06023: no backup or copy of datafile 2 found to restore
RMAN-06023: no backup or copy of datafile 1 found to restore
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Mar 14, 2012
How one should know whether RMAN is using target database control file or using separate catalog database. Also what one should do if he dont have catalog users credentials.
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Jun 10, 2013
I am having a issue, we are trying to restore our db from control files using Symantec Backup exec, but job fails giving me error go to table spaces select all table spaces and unchecked roll forward.
i am unable to find way to uncheck the table spaces. Here is the complete description.
Cause
The system catalog tablespace "syscatspace" contains all of the system catalog information for the tables. Syscatspace needs to be rolled forward first, and then the other tablespaces must be rolled forward.
Solution
Workaround:
When the restore operation is run from a tablespace level backup, perform the rollforward for the syscatspace tablespace first and then for other tablespaces.
Execute the rollforward operation as a DBA operation. The sequence of the recovery process should be as follows:
1. Select all tablespaces, uncheck the rollforward option and run the restore job.
2. Run the rollforward operation as a DBA initiated operation:
rollforward syscatspace to point in time / end of logs. e.g. db2 => rollforward database UEXIT to end of logs and complete Tablespace (SYSCATSPACE) online
3. Perform rollforward of all other tablespaces.
e.g. db2 => rollforward database UEXIT to end of logs and complete tablespace (SYSTOO LSPACE,USERSPACE1) online
Refer to IBM DB2 documentation for more information on DBA-initiated operations.
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Mar 9, 2011
My management is asking me to find the best way to migrate our 3.3 TB data warehouse to a new server. I currently use RMAN to back up the database. This is done offline on Sundays, and it takes about 9 hours, compressed backups to disk. Archived log backups are done online, not in conjuction with the db backup.
I have read a number of documents detailing step to use OEM Db Control (aka dbconsole) to clone the database to the new server.
I have a few questions:
1. I need to clone the Oracle SW first, as our current install has patches, so it should take less time.
2. Do you think just restoring from the last RMAN backup and doing recovery would be faster than cloning?
3. On the new server, I have assumed that the root user (not me) would have to pre-create the OFA structure, e.g.; we have some mount points like /f01/oracle/DBNAME or /g01/oracle/DBNAME. I cannot imagine that the Db control Gui or Rman could create that structure on the target server. Is that correct?
4. There seems to be an attitude in my shop that the storage array mount points and OFA would not have to be identical on the target server. Any opinions?
Back in 1995, I successfully manually cloned a database to a new server in an HP environment, but it was only about 70G!!
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Feb 13, 2012
I had a database on an old P4 running but the motherboard got fried. I was able to recover all the data files (.ctl and *.dbf) plus the redo logs (.log). There is no export or backup taken - I have old ones, but I need to recover the latest which only existed in the data files.
I now have Oracle installed on a new P5 machine and was wondering if it is possible to use these data files in the new database? If so, how do I go by restoring the data files?
Both the P4 and P5 where running Red Hat Linux.
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Aug 29, 2010
I want to use rman to restore all my control files, I just did a level 0 incremental backup and ran the following script.
rman <<EOF
connect target sys/sys@GOLD_AUX
connect catalog rman/rman@GOLD_CAT
RUN
{
STARTUP FORCE NOMOUNT;
RESTORE CONTROLFILE;
ALTER DATABASE MOUNT;
ALTER DATABASE OPEN RESETLOGS;
}
EOF
My control files seem to be put back in the correct spot and suggest a way I can restore only my control files and have everything in sync with my datafiles.
end of out from rman script
====================
channel ORA_DISK_1: restore complete, elapsed time: 00:00:04
output filename=/oracle/data/aux/control01.ctl
output filename=/oracle/data/aux/control02.ctl
output filename=/oracle/data/aux/control03.ctl
Finished restore at 29-AUG-10
[code]...
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Sep 27, 2013
I took database backup without "change the controlfile configuration autobackup on".. and unfortunately i deleted my controlfile. Then I tried to restore my controlfile but it gives error,now how can i restore controlfile is there any other way to restore controlfile with aautobackup..
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Sep 11, 2011
I have a problem with my control file [URL].........
What I did, I have a duplicate of the database with the invalid control file, let's call it DUMDB. I am using my control file and no recovery-catalog-db.
I recreated the control file. Now everything is working fine, new backups can be taken, restores can be made. I just need to restore a backup tagged with "LASTDEV". The control file for this backup is the invalid one. So I need a restore WITHOUT restoring the control file.
I did:
CODERMAN> catalog backuppiece '/u03/flash_recovery_area/DUMDB/backupset/o1_mf_nnndf_LASTDEV_75fmkllw_.bkp';
cataloged backup piece
backup piece handle=/u03/flash_recovery_area/DUMDB/backupset/o1_mf_nnndf_LASTDEV_75fmkllw_.bkp RECID=1 STAMP=761604017
CODERMAN> list backup;
using target database control file instead of recovery catalog
List of Backup Sets
===================
BS Key Type LV Size Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ ---------------
1 Full 2.77G DISK 00:00:00 26-AUG-11
BP Key: 1 Status: AVAILABLE Compressed: YES Tag: LASTDEV
Piece Name: /u03/flash_recovery_area/DUMDB/backupset/o1_mf_nnndf_LASTDEV_75fmkllw_.bkp
List of Datafiles in backup set 1
===========================
File LV Type Ckp SCN Ckp Time Name
---- -- ---- ---------- --------- ----
1 Full 63166185 26-AUG-11 /u02/oradata/dumdb/system01.dbf
2 Full 63166185 26-AUG-11 /u02/oradata/dumdb/sysaux01.dbf
3 Full 63166185 26-AUG-11 /u02/oradata/dumdb/undotbs01.dbf
5 Full 63166185 26-AUG-11 /u02/oradata/dumdb/stdtbs01.dbf
6 Full 63166185 26-AUG-11 /u02/oradata/dumdb/users.dbf
CODERMAN> crosscheck backupset 1;
using channel ORA_DISK_1
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=/u03/flash_recovery_area/DUMDB/backupset/o1_mf_nnndf_LASTDEV_75fmkllw_.bkp RECID=1 STAMP=761603187
Crosschecked 1 objects
CODERMAN> RESTORE DATABASE FROM TAG='LASTDEV';
Starting restore at 11-SEP-11
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=130 device type=DISK
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of restore command at 09/11/2011 20:32:25
RMAN-06026: some targets not found - aborting restore
RMAN-06023: no backup or copy of datafile 6 found to restore
RMAN-06023: no backup or copy of datafile 5 found to restore
RMAN-06023: no backup or copy of datafile 3 found to restore
RMAN-06023: no backup or copy of datafile 2 found to restore
RMAN-06023: no backup or copy of datafile 1 found to restore
This is exactly the same message if you do "RESTORE DATABASE FROM TAG='NONEXISTENTDUMMYTAGXXXX'"
Why can the data files not be found even if they are listed in the backup?
I am on 11.2.0.2.0 on Linux64.
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