RMAN / TSM - Missing Arch Logs Backups?
Aug 26, 2013
I have an environment in which backup is performed of Oracle 10/11 databases with the use of RMAN and Tivoli Storage Manager (Data Protection for Oracle).There are several databases and for every one there is a daily full backup and hourly archive logs backup.
Sometimes when full db backup takes longer (up to 4 hours) archive logs backups are missed - as TSM node cannot perform two backups at a time. I would like not to have those missed backups.
Option A was to delete association of the arch log scheduler during full backup. But when removing association we lose historical data about backup. And we need historical data to be able to create weekly / monthly / quarterly statistics of completed backups. We need to have 99% completed.
Option B was to create two nodes in TSM (TDPO) and one will do full backup only and another one only arch logs backup. So the problem is moved to RMAN. But from RMAN specialist I heard that this may cause problems with full backup. During full backup also archive logs are backed up (at the start and end) so there might be a problem with accessing the file that is used by another process. And this may cause problem with full backup - which we want to avoid especially.
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Oct 7, 2012
We have a nightly rman backup that was complete and clean.The backup contains a Data File, Control File and a backup Archive Log file.The database server crashed with all the subsequent archive logs lost.
We are trying to recover from the three backup files.We are bumping into the backup piece missing as all the archive logs are done. how to restore with the exising backup files. the lost archive logs are probably salvageable.
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May 29, 2013
I have RMAN arch backup setup for every 5 hours, it seems running perfect and taking archives backup, but it not removing from archive log location, I have DR setup for this environment, how RMAN removes archives in DR environment.
Here is the information.
skipping inaccessible file /PRD1/arch02/arch/PRD1_1_8349_790425892.arc
RMAN-06061: WARNING: skipping archived log compromises recoverability
skipping archived logs of thread 1 from sequence 8440 to 8478; already backed up
skipping archived logs of thread 1 from sequence 8440 to 8478; already backed up
channel disk1: starting compressed archived log backup set
channel disk1: specifying archived log(s) in backup set
input archived log thread=1 sequence=8479 RECID=151073 STAMP=816692206
input archived log thread=1 sequence=8480 RECID=151076 STAMP=816695235
[code]....
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Dec 9, 2012
We are using the following commands to take hot backup of our RAC database. Hot backup is fired by "backup" user on Linux system.
=======================
rman target / nocatalog <<EOF
CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '$backup_dir/$date/%F';
run {
allocate channel oem_backup_disk1 type disk format '$backup_dir/$date/%U';
#--Switch archive logs for all threads
[code]......
=======================
Due to which after command (used 2 times) "sql 'alter system archive log current';" I see the following lines in alert log 2 times. Because of this all the online logs are not getting archived (Missing 2 logs per day), the backup taken is unusable when restoring. I am worried about this. I there any to avoid this situation.
=======================
Errors in file /u01/oracle/admin/rac/udump/rac1_ora_3546.trc:
ORA-19504: failed to create file "+DATA/rac/1_32309_632680691.dbf"
ORA-17502: ksfdcre:4 Failed to create file +DATA/rac/1_32309_632680691.dbf
ORA-15055: unable to connect to ASM instance
ORA-01031: insufficient privileges
=======================
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Apr 23, 2013
While Configuring Data Guard for ORacle 10g (10.2.0.4) 64 bits on Windows 2007 Server 64 bits.I got few questions
1. What is the Default mode of Standby Database?
2. Should we Always Start Physical Standby Database to Recover Missing Redo Archive Log?
SQL> startup mount;
ORACLE instance started.
Total System Global Area 591396864 bytes
Fixed Size 2067496 bytes
Variable Size 163578840 bytes
Database Buffers 419430400 bytes
Redo Buffers 6320128 bytes
Database mounted.
SQL> alter database recover managed standby database disconnect from session;
Database altered.
3. When there are missing Redo Log Archives e.g.
----On Standby Database--------
SQL> SELECT RESETLOGS_ID,SEQUENCE#,STATUS,ARCHIVED FROM V$ARCHIVED_LOG
2 ORDER BY RESETLOGS_ID,SEQUENCE#;
RESETLOGS_ID SEQUENCE# S ARC
------------ ---------- - ---
812980008 15 A YES
812980008 16 A YES
812980008 17 A YES
812980008 18 A YES
[code]....
65 rows selected. Log 8, 9, 10, 11, 12, 13, 14, 15 are missing.
How to Apply / Recover These Logs on Standby Database?
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Sep 3, 2010
"If no level 0 backup is available, then the behavior depends upon the compatibility mode setting. If compatibility is >=10.0.0, RMAN copies all blocks changed since the file was created, and stores the results as a level 1 backup. In other words, the SCN at the time the incremental backup is taken is the file creation SCN. If compatibility <10.0.0, RMAN generates a level 0 backup of the file contents at the time of the backup, to be consistent with the behavior in previous releases."
So yes, that's it. Even in the Oracle 11g OCP course and exam, the information given is for Oracle 9 (pre 10g). Seems like a major functional regression.
------------------------------------------------------------------------------------------------------------------------------------------------
Original problem.
Am I not understanding something about rman????
Using oracle 10g standard edition and rman.
No existing backups.
When I run repeated level 1 cumulative incrementals, the appear to back up everything (like a level 0 would).
My understanding is that if a level 1 is run w/o an existing level 0 backup, it will generate a level 0 backup.
All subsequent level 1 backups should be level 1's as expected.
If I explicitly generate an level 0, followed by level 1's it all works as expected.
I am determining what got backed up by the size of the resulting save sets.
Do I have to do an explicit level 0 and then explicit level 1's? I thought not.
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Sep 4, 2012
I would like to know when I should to use the MD_BACKUP and MD_RESTORE commands. Whats the advantage over the RMAN backups?
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Sep 5, 2012
if I run below rman command lines in 10g and 11g RMAN, it works well, but NOT in RMAN (Release 8.1.7.4.0), so which commandlines I should use to get to the same pursposes in RMAN 8.1.7.4?
run {
ALLOCATE CHANNEL c1 TYPE 'sbt_tape';
ALLOCATE CHANNEL c2 TYPE 'sbt_tape';
ALLOCATE CHANNEL c3 TYPE 'sbt_tape';
[Code]...
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Mar 7, 2010
I have some client RMAN backups from an AIX machine, a set of .bkp files including the control file, that I have been asked to restore on a Windows 2003 server. My first question is if such a restore is possible?Also, the backups are from Oracle 10.2.0.3, and I need to restore them to 11g, will this cause any complications?
how to carry out such a restore procedure from scratch.
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Feb 15, 2013
We just purchased NAS (Raid5) unit to manage our data storage. I am planning to create a virtual partition on this nas device and use one partition for oracle data storage and another virtual partition will be used by other data (files and may be sqlserver data files....etc..)
We will have oracle installed on seperate oracle server. Can we use RMAN to manage incremental backups in this environment? May main worry point is that our data storage device will have many different type of datas and will we be able to tell RMAN to make backups only from certain virtual drives?
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Jun 7, 2012
I have two questions with this script
RUN
{
RECOVER COPY OF DATABASE
WITH TAG 'incr_update';
BACKUP
INCREMENTAL LEVEL 1
FOR RECOVER OF COPY WITH TAG 'incr_update'
DATABASE;
}
taken from here [URL]....
1) Does it backup archivers? If not, how to add them?
2) Can this script be run daily for ever?
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Mar 11, 2013
We have EM (Cloud 12c) initiated scheduled backup jobs that perform (all below are online backups, obviously archivelog mode)
- level 0 Incremental 3AM on Sunday - with options backup all archive logs, delete input, delete obsolete
- level 1 Incremental (non cumulative) 3AM every other day - same options
Recovery window is set to 3 days, other options below:
CONFIGURE RETENTION POLICY TO RECOVERY WINDOW OF 3 DAYS;
CONFIGURE BACKUP OPTIMIZATION OFF; # default
CONFIGURE DEFAULT DEVICE TYPE TO DISK; # default
CONFIGURE CONTROLFILE AUTOBACKUP ON;
CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '%F'; # default
CONFIGURE DEVICE TYPE DISK BACKUP TYPE TO COMPRESSED BACKUPSET PARALLELISM 2;
[code]....
Everything appears to be working normally (archive logs are being backed up and once they are the archive logs themselves are being deleted from the FRA), but I'm having some trouble understanding the behavior of the delete obsolete.
With a recovery window of 3 days, on Monday at 11AM my expectation would be that I would find in backups the following:
- level 0s from day before (Sunday) and the previous Sunday (8 days prior)
- all level 1s from previous Sunday on (so Mon-Sat and this morning)
- archivelog backups from Friday until this morning
What I'm not understanding is that I'm seeing archivelog backups from last Monday, Tuesday, etc. - i would have thought these would have gone obsolete based on my recovery window, yet when I run report obsolete in RMAN nothing is showing up.
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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 25, 2011
I receive errors when trying to backup my database (version 9.2.0.2.0) to an NFS device.
I mounted the NFS device in the HP-UX 11.11 server with the folowing comand :
CODEmount -F nfs -o hard,rw,rsize=32768,wsize=32768,suid,proto=tcp ip_adress:/nfs/RMAN_BACKUPS /rman_backups
the device is succefully mounted.
drwxrwxrwx 2 99 100 17 Nov 25 16:17 rman_backups
When i begin a backup with rman i receive the folwing error :
CODEcanal ORA_DISK_1 : dM-imarrage de l'M-ilM-iment 1 dans 25/11/11
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03009: failure of backup command on ORA_DISK_1 channel at 11/25/2011 16:35:00
ORA-19504: Echec de crM-iation du fichier "/rman_backups/DB_6jmsi811_1_1.bkupset"
ORA-27041: ouverture du fichier impossible
HP-UX Error: 13: Permission denied
Additional information: 2
Gestionnaire de rM-icupM-iration (Recovery Manager) terminM-i.
It say permission denied but it is set to drwxrwxrwx and i can create and change any file in the directory.
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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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Sep 3, 2013
Oracle 10gR2 on 64-bit RHEL.Backup Strategy:There will be a level-0 backup of the database every Sunday and level-1 every weekday.Archivelogs will be backed up up every 30 minutes.
Q: How can I delete ALL the archivelog backups that were taken that day (every 30 minutes) right after successful completion of level-0 or level-1 backup?
I want to delete them because they may not be of any use after the level-0 or level-1 backup (am I right)?
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Aug 24, 2012
Here we have a dataguard environment with db1 as primary and db2 as physical standby database. We configured dataguard in 10g environments and we are not using grid control. What are the steps for configuring rman for incremental backups in this environment?
We want to schedule the backups to be taken in standby db, (that is applicable in case of switchover too). In the case of switchover to db2 what all do we need to do in rman manually to resume backups in db1?
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Nov 13, 2013
Any procedure which we can initiate an incremental backup without Level 0 backup.
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Apr 5, 2013
Dataguard and RMAN.
Got Active DataGuard on a primary database, quite nicely sending its archive logs to its secondary. I can quite happily use the Broker and switchover between them.
Now if I take RMAN backups of the primary database, if I have to failover to the secondary, I'm gonna loose all those backups.
Well, I can restore the whole database to the backup, cos I can restore the control file, from the backuip and therefore I can restore the whole db.
But if I want to restore to a tablespace, I wont be able to , cos the db_unique_names names are different, and the DB ID's will be different.
Same goes if I use a recovery catalog....
so how do I failover/switchover without loosing my previous rman backups ??
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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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Jun 19, 2013
why can not we resize online redolog files instead of re-creating the same with large size and remove the older onces.2. How can we make RMAN obsolute backups as usable ?
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Jul 28, 2013
Assuming you have a 9i database . where you have it enabled in archive mode , yet constantly deleting the archived redo logs , due to space constraints .
Will you be able to perform a full level 0 backup , and the following incremental backups , in the absence of the archived redo logs ? And are these incremental backups enough to recover the database or particular data files , to the point of the backup itself at least ?
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Aug 30, 2012
My oracle database is 11.2.0.2 RAC RDBMS on RHEL 5.6
We recently created physical standby database. How do we delete standby archive logs from physical standby?
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Aug 29, 2012
the rman backup script for weekly full backup and daily incremental backups with configure commands for oracle 11g database.
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Nov 15, 2013
I trying to backup archive logs using rman in standby database. I'm able to backup archive logs using simple command it get's successfully completed. rman > BACKUP ARCHIVELOG ALL When i'm trying to do with keep command it's getting failed.I'm trying to do on physical standby databaseBACKUP ARCHIVELOG ALL KEEP UNTIL TIME 'SYSDATE+100' TAG = 'TEST'.
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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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