Backup & Recovery :: RMAN Restore / Recovery To Previous Cold Backups
Aug 13, 2013
My scenario is: database is in archivelog mode.
I run DLY cold backups including controlfile & archivelogs and keep 3 gens of backups and archivelogs to 3 days also. What is the correct procedure to restore back to an old cold backup. Database is backed up Mon,Tue,Wed on Thur we require to bring database back to Tuesday DLY security.
I have tried:
startup mount
restore database from tag 'DLYTUE'
recover database
( this just rolls forward on all archive logs once it restores datafiles, not getting to point to alter database open resetlogs.)
Next tried to :
recover database archivelog tag 'DLYTUE'
( same outcome )
What is the correct rman procedure including should I remove old archive logs from working OS directory ? Also need to know once I restore back and open database to TUE security how do you tidy up the archive logs and dumps which are no longer require i.e. : weds..
I have read about using the set until time option but how to I get absolute time from when cold backup completed if this is the correct procedure.
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Feb 7, 2011
I have a doubt regarding the process the RMAN follows for restore and recovery of the database.
My Level 0 full backup completes on Saturdays at around 11 am after taking 8 hours (It starts at 3am).On Sunday, I ask RMAN to restore (on a different box) till Saturday 11:30 am.Then, after the restore is successful, I recover it till 11:45 am.
The recovery also goes fine and Iam able to clone to test box.
Till what time is the database restored? I assume its till 11 am since the L0 backup finishes at 11 am though I have asked it to restore till 11:30 am
During the recovery, ONLY the archives generated between Saturday 3 am and till the time i asked for recovery (Saturday 11:45 am ) are required. But, checking the recovery log file, i was surprised to see that RMAN has restored archive files starting from Friday 9:30 pm (Much before the time the Level 0 backup even started).
why does RMAN require the old archive log files.
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Mar 13, 2012
1. My RAC (old RAC) had got a failures from one node, then there was only one existing node now.
2. I configured a RAC (new RAC) on 2 other servers, both of them (old-RAC and new-RAC) has got same OS version, platform and Oracle version release.
3. I took a full backup yesterday plus archivelog in the node of old-Rac, configure NFS in new-Rac to make the backup within remote-share NFS.
The only problem still now that I've restore/recovery/duplicated single instance, not Rac. So, may you guide me to do it?
Information:
Old-Rac & New-Rac:
+ Cluster 11g: CFS
+ Database: 2 nodes with same instance name (cbs1-cbs2)
+ Location for CRS_HOME and ORACLE_HOME: Same to be.
+ Location of archivelog: Same to be (+ARCHIVE)
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Jan 8, 2013
Does the full cold backup of rman include online redologs?
So that at the time of recovery when i restore the database the online redologs also restored to that point?
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Sep 10, 2012
RMAN is not removing obsolete backups and now the backup directory is nearly full.Retention policy is 1, however, there are backups more than 6 weeks old still in the backup directory.crosscheck and delete obsolete commands run every night, and I have also run these manually, yet the backup files still remain.It is like RMAN is not aware of their existance.How can I confirm that RMAN does not need them and therefore delete them manually using OS commands.
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Nov 9, 2011
Environment:
oracle 10.2.0.1.0
Windows XP
I have taken the RMAN Full database backup through the following command.My database is in no archivelog mode.
AT RMAN prompt
Shutdown immediate;
Startup mount;
run
{
allocate channel c01 device type disk format 'd:
man_bkp est_%U';
allocate channel c02 device type disk format 'd:
man_bkp est_%U';
backup full database tag 'full_bkup_test_081111';
backup current controlfile;
backup spfile;
release channel c01;
release channel c02;
}
Now i have deleted my all controlfile and spfile/Pfile from the database.So how can i recover my SPfile and controlfile? i do not have autobackup on of SPfile/Controlfile.
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May 10, 2011
I have a live server on which Oracle 10g Database is running. We take full RMAN Backups everyday. Now we want to restore the RMAN Backup file from the Live server to another machine (which is going to be a test system). I want to restore the latest RMAN backup on the test machine (which is not on network).
When I copy the RMAN backup set in the flash recovery area of the test machine and then use "list backup", the backup set is not listed. I also tried "crosscheck backup" and then "list backup" but still the backup set does not appear. how can I register the backup set from live server into test machine and then restore it.
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Jul 4, 2011
I have a problem in running delete obsolete or report obsolete using rman. Although the retention policy is set to "CONFIGURE RETENTION POLICY TO RECOVERY WINDOW OF 60 DAYS;", when running delete obsolete or report obsolete it deletes or returns all the backupsets till sysdate. What should I do to solve this issue?
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Jun 8, 2012
is it possible to have a vss snapshot backup on the top of an RMAN backup. Because the link [URL] says that we can have an incremental level 1 backup on the vss snapshot backup.
So I need to know if interoperability between RMAN and VSS exists or not.
Also is it possible to have mixed backups meaning vss snapshot backups and rman backups. Whenever we take snapshot backup, is it updated in the control file?
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Jan 20, 2013
I am trying to learn about RMAN Incrementally Updated Backups. I created a database on Server A with the parameters and configurations as shown in image attached. I would like to restore full database on Server B (Test DB).The Server B is exactly same in directory structure as the Server A
e.g. ('E:archive','E:incr_backup'). I would like to automate this process so that it updates the Server B on daily basis for R&D purpose.
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Nov 13, 2013
Any procedure which we can initiate an incremental backup without Level 0 backup.
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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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Feb 14, 2011
I have to test a hot rman backup on testing environment and I have some doubts.
STAGE
Server 1
production database (linux)
backup folder on cifs share windows server
Server 2
testing database (linux)
First I installed linux on same network, I gave it access to cifs backup resource, then I installed the same database version than production environment, then I create a typical database with only same database production name. Also the Linux partitions between linux servers are different.
What oracle procedure must I apply?
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Nov 1, 2013
I want to restore my database from server x to server y.
The control files on server x are named [$ORACLE_SID]_control01.ctl and [$ORACLE_SID]_control02.ctl.
We have an auto backup of the control files.
When I restore the control files on host y, (from autobackup) the restored controle files have other names: control01.ctl and control02.ctl. After the restore and recover (which goes well) the database does not start correctly.
SQL> ORACLE instance started.
Total System Global Area 626327552 bytes
Fixed Size 2224088 bytes
Variable Size 411041832 bytes
Database Buffers 205520896 bytes
Redo Buffers 7540736 bytes
Database mounted.
ORA-01122: database file 1 failed verification check
ORA-01110: data file 1: '/data/coda/coda_system01.dbf'
ORA-01202: wrong incarnation of this file - wrong creation time
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Mar 7, 2012
I have on PC running Windows Server 2003 named "Host A" and another Windows Server 2003 named "Host B".I made a Backup from Host A and want to restore this on Host B with following procedure.
Prepare & Backup:
SQLPLUS SYS AS SYSDBA
SQL>SHUTDOWN IMMEDIATE
SQL>STARTUP MOUNT
SQL>ALTER DATABASE ARCHIVELOG;
SQL>ALTER DATABASE OPEN;
SQL>ARCHIVE LOG LIST;
SQL>ALTER SYSTEM ARCHIVE LOG START;
SQL>QUIT
[code]...
But when i now try to access the Database Control i got following Error:„503 Service Unavailable: Servlet error an exception occurred the current application deployment descriptor do not allow for including it in this response" and the restored Datas are not included.
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Feb 26, 2012
We are doing RMAN Duplicate set until time to refresh daily our test database for our developers and it taking long time to finish. We noticed on the restore log that RMAN was using a day old old backup pieces to refresh the test database and don't immediately use the latest backup pieces instead.
For additional details here's the rman duplicate command we are using which we run daily(mon-sat) at 4am once daily full backup on production completed.
RMAN Duplicate commands:
run
{
set until time "to_date(to_char(sysdate,'Mon DD YYYY') || ' 04:00:00', 'Mon DD YYYY HH24:MI:SS')";
allocate auxiliary channel ch1 type disk;
duplicate target database to testdb;
}
exit
Is there a way on how to let RMAN use the latest backup pieces instead?
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Feb 9, 2011
Is it possible to restore dropped table OR wrongly updated table using RMAN backup.
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Jun 21, 2011
We are using Oracle 10g R2 in Windows Server 2003. I'm trying to restore a database in a new server, using RMAN backups.
Our external consultant configured RMAN scripts for full and incremental backups but never tested them . Since he just doesn't show up, I'm forced to tested them, restoring the whole database in a new server.
My instance is named MTDPROD, and I will create all from scratch.
At current server, RMAN files are generated in:
//192.168.1.149/g$/XXXSRV4-ArcLogs/MTDPROD/RMAN
At new server, I run all these commands:
C:>oradim -new -sid MTDPROD -intpwd mtdprod
Instance created
-- I created the relevant folder hierarchy under <ORACLE_BASE>
directory
-- Then, I created the relevant directories for Oracle Database, as
follows:
--a. Create BDUMP, CDUMP, and UDUMP directories under '<ORACLE_ BASE>
[code]....
By instance, I see a lot of this kind of files:
- FULL_MTDPROD_20110529_386_1.BAK
- INCR_MTDPROD_20110621_480_7.BAK
And only see these two files:
- C-2169285856-20110527-03
- C-2169285856-20110527-04
It seems that this C-2169285856-.... files only were on 27/05/2011 and then no more. However, the FULL_... and INCR_.. files are generated every day. The FULL is generated at the end of each month and INCR is generated every day.
This is the backfull.sql:
run {
allocate channel c1 type disk maxpiecesize=4G;
CROSSCHECK archivelog all;
backup
incremental level 0
format '\192.168.1.149g$XXXSRV4-arclogsMTDPRODRMANFULL_
[code]....
This is the backincr.sql:
run {
allocate channel c1 type disk maxpiecesize=4G;
CROSSCHECK archivelog all;
backup
incremental level 1 cumulative
format '\192.168.1.149g$XXXSRV4-arclogsMTDPRODRMANINCR_
%d_%T_%s_%p.bak'
[code]....
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Nov 7, 2010
We have the requirement of performance testing of our proposed production platform, for this i am asked to take RMAN backup of clean position (Say Day0 or baseline backup) and restore it multiple times for few rounds of testing. My question is after 1st restore (with set until time of day0 position) if i open the database with resetlogs, would i be able to restore same clean backup again? I am using control file in the environment instead of RMAN catalog database. What i can do to make this scenario work? I am already in preperation of setting rman catalog database.
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Feb 13, 2012
I am attempting to use an rman backup form our live server to restore live data over an existing dev database with a different name. I cant use the duplicate command as the versions of oracle are different (10.2.0.4 EE on live, 10.2.0.5 SE on dev) So I copied the backup sets including an autobackup control file onto the dev server. I set the ORACLE_SID to the DEV version (SUN43DEV) and startup nomount and restore controlfile from the backup location. This works and restored the live controlfile. However, I then wanted to mount the database and catalog the backupsets before making a note of the last archivelog etc and restoring the backup with set newname options. But when I try to mount the database I am told that the database has a different name (SUN43 is not SUN43DEV). I read somewhere that I need to set the ORACLE_SID to the live value (SUN43) and restore as that, then use nid TO RESET THE DBID and DATABASE NAME. However, my tnsnames on DEV has no entry for the live database, and we do not have any service defined through ORADIM for the live instance on the dev server. Should I be creating an entry in DEV tnsnames that actually looks at the LIVE server? or do I need to create a service and tns entry etc for SUN43 on my DEV server pointing at the DEV server I have not seen any mention in instructions of creating a service or adding the entry to tnsnames, or indeed adding an entry to the listener for the original live sid. I am worried that if I actually point to the live server then the restore would be attempted on the live server not dev even though I am running it from Dev.
Also, do I need to drop the existing database on DEV before I restore or will RMAN just restore over the top of it?
Finally, if I try to add an entry to the LISTENER.ORA for the new sid, when I stop and start the listener, or reload, the entry is not recognised. I also noticed that the existing SUN43DEV entry is not in there either, yet I can still use that SID - I am assuming that is because the listener is not being used and the sid is recognised from the existence of the service in windows services instead?
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Dec 13, 2011
can we restore database from obsolete backup using rman
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Mar 27, 2012
I have been updating data in my database by adding numerous rows and assume the insertion of rows started from 1st date of january month.
I have been entering somehow or the other part of data every day.And now the date is 25th of january.
How can i take a partial backup of my database of the transactions done between 15th of January to 20th of January Month
How to take Backup of a particular date say it be 12th of january month.
How to take backup of first 10 days i.e., 1st-10th of january.
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Jul 20, 2011
I have taken the backup of a tablespace using the below mentioned command.
run
{
allocate channel c1 device type disk;
backup tablespace tcs_tbs;
}
Now I after even after one month or one year I want to restore the backup on my same database to bring the tablespace to the previous position.
Is it possible to restore even after one year, Is retention period gonna play its role in this?
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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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Oct 13, 2011
I have no backup taken in my oracle server.Today morning i created a data file and unknowingly deleted it. Now i need to restore the datafile with its contents without using RMAN.
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Sep 7, 2012
i want to clone the test db to dev db but i dont want default users and tablespaces(SYS,SYSAUX,...) in the test db datapump and exp are not working, then contacted ORACLE support and they concluded that test db sysaux was corrupted.i took RMAN all tablespace bkup except default tablespaces. then created new database using DBCA and now i want to restore and recover all those test db tablesapces but while i'm doing restore its saying
RMAN> restore tablespace MAIN_DATA;
Starting restore at 07-SEP-12
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=129 device type=DISK
creating datafile file number=20 name=/opt/oracle/oradata/DEV71/main_data01.dbf
restore not done; all files read only, offline, or already restored
Finished restore at 07-SEP-12
i created all tablespaces in dev same as test db,
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Sep 10, 2012
7 of days ago Full backup has been taken to disk due to issues with tape devices.3 days ago tape devices have been fixed and we switched to CommVault managed tape backups. CommVault calls RMAN with following command:
run {
allocate channel ch1 type 'sbt_tape'
PARMS="SBT_LIBRARY=/usr/local/bin/simpana/Base/libobk.so,BLKSIZE=1048576,ENV=(CV_mmsApiVsn=2,CV_channelPar=ch1,ThreadCommandLine=BACKUP -jm 45 -a 2:71 -cl 9 -ins 9 -at 22 -j 294321 -jt 294321:4:1 -bal 1 -rcp 0 -ms 1 -data -ma 89 -cn oraclehost -vm Instance001)"
TRACE 0;
setlimit channel ch1 maxopenfiles 8;
backup
incremental level = 0
filesperset = 32
database
include current controlfile spfile ;
}
exit;
These backups done successfully.Then archivelog backup taken similar way.But when I issue RESTORE DATABASE PREVIEW SUMMARY; RMAN starts with Full backup set, though newer Incremental Level 0 ones are available.Why it does not use these newer ones?
Oracle 10.2.0.5 for Linux on IBM POWER
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Feb 14, 2012
I am trying to restore a backup from a live server to a dev server. Have moved nackup sets. Created a windows service to match the old sid on live system. copied the pfile from live and changed the locations of the folders to suit dev. set oracle_sid to the new sid(as created to match live)
connected to rman
startup nomount
set dbid to the live number
restore controlfile
alter database mount
catalog'd all the backupsets
[code]....
but it fails when it tries the restore .. see below ..The path it is showing is the old path from the live server, so it appears to eb ignoring my set newname statements even though they succeeded earlier - should be restoring them to d:oracleoradatasun43dev ? Does the whole thing have to be put inside one run block or can I put bits in one run block and other bits outside of it etc?
RMAN> restore database;
Starting restore at 14-FEB-12
using channel ORA_DISK_1
using channel ORA_DISK_2
channel ORA_DISK_1: starting datafile backupset restore
channel ORA_DISK_1: specifying datafile(s) to restore from backup set
[code]....
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Jun 27, 2012
How i can manually allocate channel for my backups going to tape?
For disk backups i can do and it work...
RUN
{
ALLOCATE CHANNEL disk1 DEVICE TYPE DISK FORMAT 'J:dbname\%U';
restore database preview;
}
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Apr 28, 2011
How can i take a cancel based recovery and time based recovery using rman. ?
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