Backup & Recovery :: RMAN Optimization Parameter
Jul 29, 2011
I have a Tablespace DP_TS_LOBS and i stores only secure file blobs in it. DP_TS_LOBS has only one datafile "LOB1.dbf" . I have RAMN optimization parameter on. I also have the backup of DP_TS_LOBS tablespace.
RMAN> backup tablespace dp_ts_lobs;
after storing few blobs the data file "LOB1.DBF" got full and added a new data file "LOB2.DBF". Few more BLOB's were stored to DP_TS_LOBS tablespace. Then I tried to backup the DP_TS_LOBS table space again, as expected both the data file were backed up as there were changes to both the datafile since last backup.
I was expecting with Optimization Parameter on, if RMAN has a datafile with same DBID, checkpoint SCN, creation SCN,RESETLOGS SCN,time already in the backup and data file is offline RMAN wont backup that data file again.
After few minutes with out performing any activities in the database, I put the "LOB1.DBF" to offline and executed the DP_TS_LOBS table space backup again but I still see RMAN backing up the both the data files.
I was closely monitoring the "CHECKPOINT_CHANGE#" and "CHECKPOINT_TIME" columns of v$datafile, the values for those columns changes for data files "LOB1.DBF" and "LOB2.DBF" when I execute backup tablespace command on DP_TS_LOBS even thought there was not any activity in the database to add or update or delete blob that are stored in DP_TS_LOBS table space.
Initially I thought it can be due to some unwritten committed blocks of dp_ts_lobs table space in the memory that got written to the datafiles while executing backup tablespace command and that why i saw the change in checkpoint scn and checkpoint time , but it keeps happening every time when I tried multiple times.
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Feb 28, 2013
I would like to know that if I enable backup Optimization on then incremental full backup skip any files which was earlier backup? Because we may know that backup Optimization on ensure skip those files which are already taken backup.
Database : oracle 10g 10.2.0.3 .
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Feb 10, 2011
We are trying to restore a database on the different server using RAM incremental level 0 and 1 backups. We have weekly Incremental level 0 backups along with incremental backups on daily basis. During recovery of Incremental level 0 backup, RMAN is expecting/looking for Incremental Level 0 backup of prior week as well. Is this the usual process for RMAN to look for prior level 0 backup though we need to restore from the current level 0 backup and roll forward by a week with subsequent Level 1 backup.?
We intend to restore from the Level 0 of 1/16 and roll forward with daily incrementals till 1/22. RMAN is expecting level 0 backupsets from 1/9 backup as well and keep failing since those backups are not available. quick inputs since we are in middle of recovery and trying to resolve if this is even doable.
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Oct 18, 2011
I have problem on using "delete obsolete" in RMAN.
First, let describe my backup configuration.
1. Full backup every Monday (17-Oct, 10-Oct, 3-Oct, 26-Sep)
2. Incremental backup for other days
3. Enable autobackup of control file
4. Backup archive log every day
5. RETENTION POLICY TO RECOVERY WINDOW OF 30 DAYS
6. Execute "Delete obsolete" every day
7. control file is used instead of catalog
The results observed:
1. Backup of control files older than 30 days will be deleted
2. Backup of archive log files older than 30 days will be deleted.
3. Backup of datafiles older than ~14 days but before 30 days are also DELETED.
In my example, the backup of datafiles created at 26-Sep is deleted at 16-Oct.
I tried "restore database validate until time "sysdate-22"" at 17-Oct. And RMAN reported "datafile xx will be created automatically during restore operation". It seems that RMAN failed to do restoration up to 22 days ago. The retention policy I set seems not effective on datafile backups.
I checked view v$backup_set and the "Keep" is "No" and "Keep until" is empty.
The only thing I can think of, is the settings of "CONTROL_FILE_RECORD_KEEP_TIME". It is marked "7" in the Oracle, which is less than the retention. But I suppose this only causes the backup not deleted, but NOT be deleted earlier.
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Oct 18, 2012
understanding rman scn based Backup Algorithm .. In SCN based backup do rman generate backup from archivelogs ???
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Jan 24, 2011
I have 2 seperate rman backup one backup is of only datafile ,spfile and controlfile which i am able to restore and recover without any problem say bkp1 taken at 10 am
other set of backup is of only archive log files of same day but later time than datafile backup say bkp2 taken at 8pm...if i restore and recover bkp1 and try to restore bkp2 it gives error datafile exist (possibly due to fact both backup have control file)
if i just restore bkp1 and try to restore bkp2 so that i can do one recover at time
it gives error datafile permission issue (possibly due to fact both backup have control file)
I want to restore database upto 8pm time how can i use both bkp1 and bkp2 to do it(restore datafiles and apply all archive logs on it)
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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 11, 2011
I have recently patched my catalog home to 9208 from 9204; the target database is still on 9204 but now I cannot connect to the catalog database.
oracle@mogw:TES1:/u01/app/oracle/admin/TES1/bdump
rman rcvcat rman/rman@RMANDB
Recovery Manager: Release 9.2.0.4.0 - 64bit Production
Copyright (c) 1995, 2002, Oracle Corporation. All rights reserved.
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
[code]...
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Jun 25, 2013
While connecting to target database from stand database. I am getting below error.
calhost dbs]$ sqlplus system/oracle@proddb
SQL*Plus: Release 10.2.0.1.0 - Production on Sat Jun 22 00:18:10 2013
Copyright (c) 1982, 2005, Oracle. All rights reserved.
Connected to: Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production With the Partitioning, OLAP and Data Mining options
SQL> exit
Disconnected from Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production
With the Partitioning, OLAP and Data Mining options
[standdb@localhost dbs]$ rman target system/oracle@proddb auxiliary system/oracle@standdb
Recovery Manager: Release 10.2.0.1.0 - Production on Sat Jun 22 00:18:22 2013
Copyright (c) 1982, 2005, Oracle. All rights reserved.
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-00554: initialization of internal recovery manager package failed
RMAN-04005: error from target database:
ORA-01031: insufficient privileges
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Sep 30, 2012
how to duplicate it on oracle 11g xe windows 2003
i have read from documentation but getting some error.
in last
E:Documents and SettingsAdministrator>rman
Recovery Manager: Release 11.2.0.2.0 - Production on Sun Sep 30 03:03:09 2012
Copyright (c) 1982, 2009, Oracle and/or its affiliates. All rights reserved.
RMAN> connect auxiliary sys/12
connected to auxiliary database: XE (not mounted)
RMAN>
RMAN> DUPLICATE DATABASE TO xe
[code]...
Backup-Based Duplication Without a Target and a Recovery Catalog Connection?
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Jan 4, 2012
when i performed incomplete recovery i try to set until time but it shows RMAN-20207:until time or recovery window shoubld be before resetlogs.
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Jan 1, 2012
REGISTER DATABASE;
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of register command at 01/01/2012 11:02:40
RMAN-06428: recovery catalog is not installed
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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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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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Dec 22, 2012
I created a tablespace named 'data'.During create a new user with default tablespace 'data',I got following error message:
SQL> create user rman identified by rman default tablespace data
temporary tablespace temp
ERROR at line 1:
ORA-00604: error occurred at recursive SQL level 1
ORA-01655: unable to extend cluster SYS.C_USER# by 2 in tablespace
OS:Windows XP
Oracle 10g
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Jan 28, 2011
I am tryign to run a split onlike full backup from the os useign the sap command which is linked to rman..Command that i am useing is ...
brbackup -u / -c force -t online_split -m full -p initBR1_onlinefull.sap
The backup goes thru but i get this erro on the end...
BR0522I 57 of 57 files/save sets processed by RMAN
BR0280I BRBACKUP time stamp: 2011-01-26 12.23.26
BR0505I Full database backup (level 0) using RMAN successful
BR0280I BRBACKUP time stamp: 2011-01-26 12.23.28
[code]...
Copyright (c) 1982, 2007, Oracle. All rights reserved.
RMAN>
connected to target database: BR1 (DBID=2250873886)
using target database control file instead of recovery catalog
RMAN> 2> 3> 4> 5> 6> 7> 8> 9> 10> 11> 12> 13> 14> 15> 16> 17> 18> 19> 20> 21> 22> 23> 24> 25> 26> 27> 28>
29> 30> 31> 32> 33> 34> 35> 36> 37> 38> 39> 40> 41> 42
[code]...
Recovery Manager complete.
ERR_RC: 1
BR0280I BRBACKUP time stamp: 2011-01-26 12.23.32
BR0279E Return code from 'brtools -f printcmd -U /oracle/BR1/sapbackup/..befcdgxn..cmd -C
/oracle/BR1/sapbackup/.befcdgxn.cmd | rsh scrbdefrmr207 /bin/sh -c "'LANG=C SHELL=/bin/sh/oracle/BR1/102_64/bin/rman
[code]...
I have check on the system .. There is not file like that but thwre on on the db i,e
eshtsm20:orabr1 88> pwd
/oracle/BR1/sapdata1/perfman_1
eshtsm20:orabr1 89> ls -ltr
total 102408
-rw-r----- 1 orabr1 dba 104865792 Aug 30 09:05 perfman.data1
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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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Jan 8, 2013
Is this script is enough to delete the backup pieces older than 2 days.
CONFIGURE RETENTION POLICY TO RECOVERY WINDOW OF 2 DAYS;
configure device type disk parallelism 1 backup type to compressed backupset;
run
{
allocate channel d1 type disk ;
backup filesperset 5 format '/u06/backup/EBSDEV/EBSDEV_data_t%t_s%s_p%p' database ;
sql 'alter system archive log current' ;
backup filesperset 20 format '/u06/backup/EBSDV3/EBSDV3_arch_t%t_s%s_p%p' archivelog all delete input ;
[Code]....
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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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Mar 19, 2009
Would like to check how do we check the current value for limit channel in rman backup..
eg set limit channel d1 kbytes 2024800;
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Nov 17, 2012
We have configured tivoli and getting the below error while execute rman backup.
> rman target / catalog rman/*****@CATLOGDB
Recovery Manager: Release 11.2.0.3.0 - Production on Sat Nov 17 13:35:03 2012
Copyright (c) 1982, 2011, Oracle and/or its affiliates. All rights reserved.
connected to target database: AMTMXPRD (DBID=534215973)
connected to recovery catalog database
[code]....
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May 3, 2011
I am trying to setup incremental backup on my windows OS based server using RMAN command in batch file. When I use batch file in OS scheduler it is working fine, when I am calling same batch file from my LOCAL desktop PC it throws errors as below.
D:> \3.193.211.19sgdba
mankp_acressit.bat
D:>rman catalog rman/******@acressit target / cmd
file=E:sgdba
mankp_arch.rcv log E:sgdba
mansit_arch_rman_backup.log
RMAN-00557: could not open MSGLOG "E:sgdba
[code]....
Both single and double quotes (' or ") are accepted for a quoted-string.
Quotes are not required unless the string contains embedded white-space.
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-00556: could not open CMDFILE "E:sgdba
mankp_arch.rcv"
[code]....
* on my DB server I am login using my administrator account, on my PC I dont have admin account.
* I have checked remote execution using local user as well as admin user.
* I have checked the permission and my local ID & EVERYONE has all permission in that folder.
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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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Oct 29, 2011
Tape streaming is not happening while performing RMAN tape backup. On investigation, you find that it is not because of the incremental backup or the empty file backup and that RMAN is sending data blocks to the tape drive fast enough.What could be a solution to make tape streaming happen during the backup?
A.Configure backup optimization
B.Configure the channel to increase MAXOPENFILES
C.Configure the channel to increase the capacity with the RATE parameter
D.Configure the channel to adjust the tape buffer size with the BLKSIZE option
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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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May 30, 2012
How can be identify a particular archive-log file have backup or not from rman catalog?
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May 22, 2012
database size is 30GB is it recommended for RMAN backup
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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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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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May 5, 2011
I was trying to backup my database via RMAN and I had deleted a datafile from the database while it was still in open mode.Since I can't return back to mount stage again,I tried to bring the tablespace pertaining to that datafile offline and then restore backup of the tablespace but it's falshing error during recovery.
When I try to restore entire database,it is not even able to restore.
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