RMAN :: Size Of Level 1 Differential Backup Greater Than Full Backup
Jul 22, 2013
I am trying to practice some RMAN configuration settings.Version 11.2.0.1OS - Linux X86-64 What i wanted to validate is if there is no level 0 backup of database taken, then the level 1 backup will be automatically backing up all the blocks of the database(similar to full backup). RMAN> report schema; Report of database schema for database with db_unique_name DB101 List of Permanent Datafiles
I am not sure what these input bytes are which is not matching with the database size(posted in the beginning of thread)? why it has to show as db full when i actually run a incremental?
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.
I'm running ora 11gr2 on windows environment and I got a doubt on a specific situation.
I have to locations for my rman bkps, A and B, which point to different devices, one local and the other remote.
Imagine I take a LEVEL 0 backup on day 20 pointing to both locations, A and B. On day 21, 22 and 23 I take a level 01 backup pointing just to the local destination A. On day 24 I take another LEVEL 0 backup pointing just to location A again....
Now, I want to take a level 1 backup to location B, just to backup the blocks changed since the backup level 0 taken on day 20, bypassing the blocks already taken on days 21, 22, 23...
Is that possible? To control the levels 01 backup from 02 different destinations?
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.
Can you take an incremental backup level 1 or level 0 without archivelogs?
syntax would bebackup as compressed backupset cummulative level 1 database.
The reason I ask is because when I run backup as compressed backupset cummulative level 1 database plus archivelogs # it runs fine, but when I run backup as compressed backupset cummulative level 1 database it just hangs.
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.
I have Oracle database.I take rman backup everyday.Also I set a scheduled backup script.But scheduled backup size is 166MB,but if I take manual rman backup(rman>backup database) this backup size will 2.8GB.This backup isn't incremental backup.
I wrote 3 batch script.Finally this backup script call
backup script:
run { backup database plus archivelog delete input format 'C:\db_11g_backup\backup\oracle_scheduled_backup\backups\%d_%t_%s.rman';
on our 10.2.0.5 database, when we run full backup, my system performance comes to an halt. we run full backup and then do a validate backup to validate the structure of the database etc. Database performance takes a hit and all of the application connections goes in wait mode: On ASH or AWR - this is the top wait i see:
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:
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?
I started restoring and testing all the backups. So far I did good and I wanted to restore and test in different host. I couldn't find any online documentation regarding restore full back up in a new different server (With same OS and same version of Oracle) without RMAN catalog database.
I configured recovery catalog and started Full online backup using EMC Networker. In EMC Networker I set three months policy to keep Backup.I didn't change redundancy.
CONFIGURE RETENTION POLICY TO REDUNDANCY 1; # default
My question is, if I need to restore Backup of last 15 days then I can ?.
SQL> SELECT * FROM V$VERSION; BANNER ---------------------------------------------------------------- Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Prod PL/SQL Release 10.2.0.1.0 - Production CORE 10.2.0.1.0 Production TNS for Linux: Version 10.2.0.1.0 - Production NLSRTL Version 10.2.0.1.0 - Production
after i backup my database,i check the alert log ,i found the following errror:
Mon May 14 09:19:42 2012 Errors in file /u01/app/oracle/admin/szcargo/udump/szcargo_ora_26967.trc: Mon May 14 09:19:42 2012 Errors in file /u01/app/oracle/admin/szcargo/udump/szcargo_ora_26967.trc: Mon May 14 09:19:42 2012 Errors in file /u01/app/oracle/admin/szcargo/udump/szcargo_ora_26967.trc:
[code]....
the trace number 26967 :
[oracle@shenzhengair archivelog]$ cat /u01/app/oracle/admin/szcargo/udump/szcargo_ora_26967.trc /u01/app/oracle/admin/szcargo/udump/szcargo_ora_26967.trc Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production With the Partitioning, OLAP and Data Mining options ORACLE_HOME = /u01/app/oracle/product/10.2.0/db_1
online backup done thru RMAN.Suppose i am taking online backup of full database. During the backup, user's are inserting/deleting/modifying data. This data is getting stored as online archives. Once the database backup is finished, how these archives are applied to the database to make the database up to date.
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)
I am trying to create my database on a new server using rman incremental hot backups.
I have already restored and recovered my level 0 database on new server, but i am not able to restore/recover the level 1 backup on the new server. I have transported level 1 backup irom the old server to the new one. Do i need to recover lvl 1 bkp only or restore it also.
I am using the following query to determine if my rman backup succeeded for failed. I look for "COMPLETED WITH ERRORS"
col input_type format a10 col bck_hrs format 99.9 heading "Run|Time" col status format a21 col end_dt format a20 heading "End|Time" col mbytes_per_sec format 9,999 heading "Output|Rate|MB/sec"
[code]...
output ======
End Run Output Rate INPUT_TYPE STATUS Time Time Size GB MB/sec ---------- --------------------- -------------------- ----- ---------- ------ ARCHIVELOG COMPLETED 2011-12-24 06:03:54 .5 189.4 106 DB INCR COMPLETED 2011-12-24 05:33:05 9.3 3,392.6 103 ARCHIVELOG COMPLETED 2011-12-23 10:12:27 .2 73.3 105
I know that the DB INCR is an INCR 0 backup but is there some way query I can join with my example above to tell me this is INCR 0 or FULL BKUP?
I was thinking maybe setting "COMMAND_ID" some text like INCR 0 or INCR 1 or FULL BKUP. Does that sound feasible
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?
