Backup & Recovery :: Restore From Newer Control File And Archived Redo Log Files?
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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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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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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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 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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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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Dec 2, 2011
I ran the Full database backup as,
RUN {ALLOCATE CHANNEL CH0 TYPE 'sbt_tape';
BACKUP DATABASE FORCE PLUS ARCHIVELOG FORCE NOT BACKED UP DELETE INPUT;
RELEASE CHANNEL CH0;
}
Then I ran the restore, it failed with Quote:RMAN-06054: media recovery requesting unknown archived log....
When I backup archivelogs and choose to delete the input, it does not delete the multiplexed copy, but the specific file being backed up.So, ideally it should find it in Flah Area or at least in the backed up pieces which are there with it.Still why is it failing?
Also, in recovery, it is deleting the archived log after applying, RMAN does this if we use recover... delete archivelog command.I am using only RECOVER, still in output I can see RMAN deleting the log after it has applied it. WHY?
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Jul 2, 2012
In the backup and recovery session i have miss my online redolog files. why the datafiles are recovered.it's possible to recovered to online redo logs?
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May 8, 2013
Is it possible to recover files from backup tapes which are gone obsolete (as per retention policy)?
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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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Jun 6, 2012
I did a hot back up like this :
--check that it is in archivelog mode
SQL> archive log list
-- the data files that will need to be backup by OS command
SQL> select sum(bytes) from dba_data_files;
SQL> select name from v$datafile;
-- note archivelog sequence before starting the hot backup (need to back the archivelog generated during the backup)
SQL> select thread#, max (sequence#) from v$log group by thread# order by thread#;
-- begin the backup
SQL> alter database begin backup;
-- use OS command to copy the datafiles
-- remember to end the backup mode
SQL> alter database end backup;
-- archive the current online redo log files
SQL> alter system archive log current;
-- REMEBER to note the MAXIMM online-redo sequence number
select thread#, max (sequence#)from v$log group by thread# order by thread#;
-- backup the control files
SQL> alter database backup controlfile to '/oradump/hbackup/O11R2/controlbk.ctl' reuse;
-- backup any archive-redo logd generated during the backup
-- select from the v$archived_log mode
-- anything thing that appear under this view is safe to backup as long you don't backup the current archive log file that is being written to.simulated a scenario, if 1 of my multiplex control is damage due to media failure ( i just delete it, seem like i got to shutdown first before i can delete it, using window bases oracle, not too sure linux allow you to delete the control file like this)
To what i understand one can restore a missing control file if you have multiplex it. so I did this :
ORACLE instance shut down.
SQL> startup
ORACLE instance started.
-- while it is being down, i use OS command to copy a good copy of the control file to the missing controlfile location + name.
-- startup
Total System Global Area 535662592 bytes
Fixed Size 1384760 bytes
Variable Size 243273416 bytes
Database Buffers 285212672 bytes
Redo Buffers 5791744 bytes
ORA-00214: control file 'C:ORACLEXEAPPORACLEORADATAXERENAME_CONTROL01.DBF' version 9539
inconsistent with file 'C:ORACLEXEAPPORACLEORADATAXERENAME_CONTROL.DBF' version 9533I google abit and it mention ,
[URL]........
>
You have tried to move one or more copies of control file at the different location when Oracle database was up and running.
You have tried to restore from database backup but your backup has not taken properly. It may taken when database is up and running.
Your database or system got corrupt/damaged during updation was in process.
>
is the error i got because of 1 of the reason above.
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May 31, 2013
I have installed oracle 11.2 on virtual machine and made two copy of this vm i.e vm1 and vm2...i have taken fullbackup with rman on vm1 and autobackup of control file.Now i want to restore this backup on vm2, for this i have configured channel and other setting. run following command
catalog start with '\server3database_backup
manC-3507808503-20130531-00';
"C-3507808503-20130531-00" is the name of control file autobackup.
RESTORE CONTROLFILE ;
it gives me error RMAN-06496: must use the TO clause when the database is mounted or open...then i use following command
RESTORE CONTROLFILE to 'C:oracleAdministratororadataslate';
then it gives me error RMAN-06024: no backup or copy of the control file found to restore...how to restore control file to vm2
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Jul 25, 2012
URL....I'm practicing for the OCP test and one of the questions is that there is a backup from yesterday and the last archived logs are from the day before yesterday not mentioned if it's cold or hot backup.
If its a cold backup - cant we recover it? is it a must to have the archived redo logs also when recovering a cold backup? That sounds not logical since those logs are made only for a hot backup. URL.....
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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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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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Nov 19, 2012
I have Backup File created in Oracle 11 g . How To restore it in Oracle 10g ?
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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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Feb 17, 2011
I have a database "BD001" for example, inside got 90 schemes, each one has two tablespaces, see below script I use to create:
CREATE TABLESPACE TS_F_ORA9_027_DAT NOLOGGING DATAFILE
'E: DataBases ORACLE 92 DAT TS_F_ORA9_027_DAT.ora' SIZE 5M REUSE ON AUTOEXTEND
NEXT 10240K MAXSIZE UNLIMITED EXTENT MANAGEMENT LOCAL SEGMENT SPACE MANAGEMENT
AUTO;
[code]....
I have the dmp this scheme "F_ORA9_027" but have no way to restore it onceI can not connect to the service.
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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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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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Mar 1, 2011
I've been using ASM for a few years now and have always installed a new system with 3 diskgroups
+DATA - for datafiles, control files, redo logs
+FRA - for achive logs, flash recovery. RMAN backup
Those I guess are the standards, but I've always created an extra (very small) diskgroup, called +ONLINE where I keep multiplexed copies of the redo logs and control files.
My reasoning behind this is that if there are any issues with the +DATA diskgroup, the redo logs and control files can still be accessed.
In the olden days (all those 5 years ago!), on local storage, this was important, but is it still important now? With all the striping and mirroring going on (both at ASM and RAID level), am I just being overtly paranoid? Does this additional +ONLINE diskgroup actually hamper performance? (with dual write overheads that are not necessary)
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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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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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