Backup & Recovery :: Why Oracle Generates One More Backup Piece On One Backupset
Nov 11, 2011
I set 'maxopenfiles 4' when allocating channel to sbt in my products env, I got 2 backup pieces in one backup set because that tablespace has 7 datafiles. Other configuration is kept as default, such as no maxsize, no MAXPIECESIZE, and etc setting.
I read document from Oracle. It says:"By default a backup set contains one backup piece. To restrict the size of each backup piece, specify the MAXPIECESIZE option of the CONFIGURE CHANNEL or ALLOCATE CHANNEL commands. " And also, maxopenfiles configure does not force another backup piece generated. So, why do I get another backup piece?
BTW, I tried this on another testing environment. I only get one backup piece even there are more than 2 times maxopnefiles datafiles.
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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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Mar 15, 2011
I am trying to clone a database on another server with different direcory structure. So that path on the source db server are /u04 whereas on on target db server it would be /u03.
Since this I am testing it on small database initially I have kept all datafiles, backup and archivelogs at /u04 and /u03 on the source and target db servers respectively Now I have copied the backups from source db server to target and since path is changed, I cataloged it
However during restore I am getting
Quote:ORA-19870: error reading backup
Here are the session details
RMAN> catalog start with '/u03/oradata/db7fra';
searching for all files that match the pattern /u03/oradata/db7fra
List of Files Unknown to the Database
=====================================
File Name: /u03/oradata/db7fra/DB7/archivelog/2011_03_15/o1_mf_1_16_6qyvpb3w_.arc
File Name: /u03/oradata/db7fra/DB7/backupset/2011_03_15/o1_mf_annnn_TAG20110315T123018_6qypyv5v_.bkp
[code].....
I have altered permissions on the backup files as well but of no use
oracle@dev-biz:/u03/oradata/db7fra/DB7/backupset/2011_03_15 $ls -ltr
total 545260
-rwxrwxrwx 1 oracle dba 12419072 Mar 15 13:52 o1_mf_ncsnf_TAG20110315T123008_6qypyrz2_.bkp
-rwxrwxrwx 1 oracle dba 3072 Mar 15 13:52 o1_mf_annnn_TAG20110315T125043_6qyr54to_.bkp
-rwxrwxrwx 1 oracle dba 426496 Mar 15 13:52 o1_mf_annnn_TAG20110315T125006_6qyr3zk4_.bkp
-rwxrwxrwx 1 oracle dba 14336 Mar 15 13:52 o1_mf_annnn_TAG20110315T123018_6qypyv5v_.bkp
[code].....
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Nov 8, 2008
Is there any way I can get all the archive log files present in a backup piece. I tried following but it always gives me all the log files for each piece:
****
SQL> select s.set_stamp, s.set_count, s.PIECES, s.backup_type,
s.controlfile_included from v$backup_set s, v$backup_piece p where
s.set_stamp=p.set_stamp and s.set_count=p.set_count and
p.handle='5mjv4do0_1_1';
[code]....
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Jun 5, 2012
I want to delete a backupset and get the flowing prompt,i want to delete it directly and no prompt,how can i do?
Do you really want to delete the above objects (enter YES or NO)? YES
RMAN> delete backupset tag 'TAG20120306T211654';
using channel ORA_DISK_1
List of Backup Pieces
BP Key BS Key Pc# Cp# Status Device Type Piece Name
------- ------- --- --- ----------- ----------- ----------
111 101 1 1 UNAVAILABLE DISK /u01/app/oracle/duplicate/al_t777244616_s111_p1
Do you really want to delete the above objects (enter YES or NO)? YES deleted backup piece
backup piece handle=/u01/app/oracle/duplicate/al_t777244616_s111_p1 recid=111 stamp=777244617 Deleted 1 objects
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Aug 2, 2013
I'm running the following and getting access denied errors.What do I need to do to make the recovery files available of the duplicate host?I cataloged the backupsets at the network path of where they are, I don't have space on the drive for the backupset and the restored database once it's done.
*Results filtered for length on duplicate lines
RMAN> DUPLICATE TARGET DATABASE TO Test
2> DEVICE TYPE DISK PFILE='D:ORACLEORA102DATABASEINITTEST.ORA';
Starting Duplicate Db at 02-AUG-13
released channel: ORA_AUX_DISK_1
allocated channel: ORA_AUX_DISK_1
channel ORA_AUX_DISK_1: sid=155 devtype=DISK
contents of Memory Script:
{
set until scn 2875467028;
set newname for clone datafile 1 to new;
set newname for clone datafile 2 to new;
...TRIMMED
[code].....
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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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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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May 2, 2011
I have facing problem while taking backup on Windows 7 client of Oracle 11g R2 database. I have installed oracle 11gR2 for windows on windows 7 machine. I have created a directory like below in database.
On Database Server
SQL> create directory win_expdp_dir as 'd:expimp';
Directory created.
SQL> grant read, write on directory win_expdp_dir to lab;
Grant succeeded.
On Windows 7 machine (client machine)
D:appproduct11.2.0client_1BIN>expdp lab/lab@wbdata.wbh-db11g DIRECTORY=win_expdp_dir DUMPFILE=lab.dmp LOGFILE=lab.log
Export: Release 11.2.0.1.0 - Production on Mon May 2 12:51:44 2011
Copyright (c) 1982, 2009, Oracle and/or its affiliates. All rights reserved.
Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
ORA-39002: invalid operation
ORA-39070: Unable to open the log file.
I have give all sharing rights on d:expimp directory. My main question is why i'm getting this error. Is there any thing missing in setup. how to take export on windows 7 client.
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Aug 7, 2012
I've read a lot about the different types of backup available with Oracle (hot and cold backup). However, I was thinking of a different way of performing this task. I'm currently using Windows Server 2008 R2 and Oracle 11g Standard Edition. I'd like to schedule an entire backup of my server via the utility "Windows Server Backup" (available for free).That way, I could recover my entire server with all the programs and files in case the latter crashes.I'm wondering if this solution could be used as a way of backing up (and recovering) the Oracle database. Should I still set up a regular hot backup with the Archivelog mode enabled in case some operations/transactions were being done at the time of the crash (for the data integrity)?
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Jul 31, 2012
I have the RMAN full database backup of oracle 10g (10.2.0.3) on Sun Solaris OS which i want to restore on oracle 11g (11.2.0.3) on Linux OS. The backup pieces was transferred to oracle 11g server manually in binary mode.
-rwxrwxr-x 1 mepc dba 36356096 Jul 16 14:49 snapcf_MEPC.f
-rwxrwxr-x 1 mepc dba 166028800 Jul 16 15:29 MEPC_full_backup_MEPC_nnnbkn9f_1_1
-rwxrwxr-x 1 mepc dba 169567744 Jul 16 15:29 MEPC_full_backup_MEPC_nmnbkn9f_1_1
-rwxrwxr-x 1 mepc dba 164813824 Jul 16 15:39 MEPC_full_backup_MEPC_nonbkn9f_1_1
-rwxrwxr-x 1 mepc dba 144025600 Jul 16 16:06 MEPC_full_backup_MEPC_nqnbkn9f_1_1
-rwxrwxr-x 1 mepc dba 168576512 Jul 16 16:09 MEPC_full_backup_MEPC_npnbkn9f_1_1
-rwxrwxr-x 1 mepc dba 168649216 Jul 16 17:33 MEPC_full_backup_MEPC_o5nbkpvv_1_1
[code]....
the backup is taken in above format. I know the ORACLE_SID and dbid of the database from which the backup has been taken. whenever i tried the following command
mepc@tcstctmatson:/mepc_backup/May22fullbkp$ rman target /
Recovery Manager: Release 11.2.0.3.0 - Production on Tue Jul 31 12:14:54 2012
Copyright (c) 1982, 2011, Oracle and/or its affiliates. All rights reserved.
connected to target database: MEPC (DBID=1595278680)
RMAN> shutdown;
using target database control file instead of recovery catalog
database closed
database dismounted
Oracle instance shut down
RMAN> startup nomount;
connected to target database (not started) Oracle instance started
Total System Global Area 1071333376 bytes
Fixed Size 1349732 bytes
Variable Size 620758940 bytes
Database Buffers 444596224 bytes
Redo Buffers 4628480 bytes
[code]....
the file is not corrupted as i checked the checksum on both the servers and it is same.how can i restore the RMAN oracle 10g backup in Oracle 11g.
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Nov 7, 2011
When you create a backup in SQL Server, whether the backup is on disk or on tape, SQL Server writes the letters TAPE to the first four bytes of the backup. Does Oracle write any specify value to the front of every backup, and if so, what are the first four bytes?
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May 23, 2012
what is %N determines in Oracle RMAN HOT Backup. In some documentation it says it gives you backup with respect to tablespace. Is it a version specific ..bcos when tried in above version it failed....
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May 24, 2012
I have a scenario like while taking the hot backup i forgot put end backup mode,at the same time one of user u1 updating some lacks of recordsinto the T1 table.at some time he wants rollback.and my redolog file size is very less.is it possible to rollback? if yes how?
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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 28, 2013
Oracle 10.2.0.5Linux 5I am creating a duplicate database using RMAN based on Oracle's documentation. I was successful up to running the duplicate command.Here is my command:DUPLICATE TARGET DATABASE vlab pfile='/<complete path of pfile>'; When I run the command, it tries to read from the backup files on production database - which is on anotehr node.Before then, I had backup piece copied to the node with the duplicate database.I ran this command to catalog the backup piece:catalog start with '/<complete path to backuppiece>'Error: no files to be unknown to the database On the other hand, when I run the command without cataloging the backuppiece, I get this error:
Partial view of error- restoring datafile 00021 to /oraappl/pca/vptch/vlabdata/staff101.dbf restoring datafile 00022 to /oraappl/pca/vptch/vlabdata/staff201.dbf restoring datafile 00023 to /oraappl/pca/vptch/vlabdata/tools01.dbf restoring datafile 00024 to /oraappl/pca/vptch/vlabdata/vol01.dbf restoring datafile 00025 to /oraappl/pca/vptch/vlabdata/volsup101.dbf restoring datafile 00026 to /oraappl/pca/vptch/vlabdata/volsup201.dbf channel ORA_AUX_DISK_1: reading from backup piece /oraappl/pca/backups/weekly/vproddat ackupset/2013_08_27/o1_mf_nnndf_TAG20130827T083750_91s7dz0r_.bkp ORA-19870: error reading backup piece /oraappl/pca/backups/weekly/vproddata/rman/VPROD 3_08_27/o1_mf_nnndf_TAG20130827T083750_91s7dz0r_.bkp ORA-19505: failed to identify file "/oraappl/pca/backups/weekly/vproddata/rman/VPROD/b
[code]....
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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 20, 2011
Here is the details
[oracle@localhost dbs]$ export ORACLE_SID=stby
[oracle@localhost dbs]$ sqlplus '/as sysdba'
SQL*Plus: Release 10.2.0.1.0 - Production on Thu Oct 20 09:47:34 2011
Copyright (c) 1982, 2005, Oracle. All rights reserved.
Connected to an idle instance.
SQL> !
[oracle@localhost dbs]$ pwd
/oraeng/app/oracle/product/10.2.0/dbs
[oracle@localhost dbs]$ exit
exit
[code].....
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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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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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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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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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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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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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