Best way of deleting archive logs on standby when backup taken on primary

Hello,
I have a 11gr2 dataguard configuration without the broker.
main problem in my particular situation arises from my FRA size on primary much more than on standby (90Gb vs 30Gb) and in some situations I'm constrained with FRA space on standby.... I'm going to align the FRAs but in the mean time....
can anyone confirm that if I have configuration as in subject with maximum performance mode and I'm not using the broker I should consider a sort of "external" way for archive log deletion on the physical standby?
In fact I'm setting on primary
- retention policy = redundancy 1
- archivelog deletion = applied on standby (without using any "backed up...." option)
Considering the standby it seems from docs that:
- retention policy always wins over deletion policy (so no archive eligible for deletion is deleted if retention is not satisfied)
- I can set on standby archivelog deletion = applied on standby (without using any "backed up...." option)
But it is not clear to me the effect of this config in case this is a standby itself and without any other cascade standby databases
The manual says this has to be met:
1) The archived redo log files have been applied to the required standby databases.
---> what does this mean in case the db is a standby.. met or not met as I have no other cascade standby dependant on this one?
2) The logs are not needed by the BACKED UP ... TIMES TO DEVICE TYPE deletion policy. If the BACKED UP policy is not set, then this condition is always met.
---> I should be ok
So the last question for standby is
- what to set retention policy to?
I have not understood if I set it to "NONE", this means no retention at all or retention for ever....
sometimes I read that there is no policy; in other examples that files will be retained forever (because no file considered as obsolete).... or at least so I understood...
I would like to have a sort of policy on standby where the archive logs can be deleted as soon as they are applied during the continuous media recovery phase...
It seems I can't find a self contained set of configurations across the dataguard....
Thanks in advance.
Gianluca

I agree with you.... It is a temporary contingency....
I already stressed the fact that sizes between sites must be quite identical...
we are going towards a production dataguard, migrating from a windows config (without it) to a Linux based config....
but this contingency made me think about these considerations regarding policies and automatic dataguard operations
I also stressed on equal size grow capability for both sites file systems, also for data tablespaces, so that for example in case of high fragmentation we have to avoid a limit situation where
1) a file system full for DR datafiles causes abend of automatic media recovery
2) this generates FRA growth in DR because archive logs are shipped but not applied any more
3) FRA goes 100% in DR and primary cannot ship any more
4) archive logs cannot be automatically deleted on primary because not already shipped
5) FRA full on primary and DB hangs....
Thanks anyway for input

Similar Messages

How to delete archive log on standby site

hi
i configured dataguard on 10g. could anyone suggest how to delete archived log on standby site..

Hi,
There is no automatic feature out-of-the-box but you have the following views:
1) Shows archive logs transfered:
select sequence#, first_time, next_time from v$archived_log order by sequence#;
2) Shows archive logs applied:
select sequence#, archived, applied from v$archived_log order by sequence#;
If you see your archivelogs applied you can safely remove archive log files from your disk. It is your decision if you keep or delete them completely.

Procedure to delete archive log from standby server

Hi
We are using oracle10g(10.2.0.3) and we configured dataguard .
I want to know procedure to delete applied archive log from standby server?
Thanks
With Regards
umair

[Delete Applied Archivelogs on Standby Database |http://emrebaransel.blogspot.com/2009/03/delete-applied-archivelogs-on-standby.html]
http://tinyurl.com/p2krga
Kamran Agayev A. (10g OCP)
http://kamranagayev.wordpress.com
[Step by Step install Oracle on Linux and Automate the installation using Shell Script |http://kamranagayev.wordpress.com/2009/05/01/step-by-step-installing-oracle-database-10g-release-2-on-linux-centos-and-automate-the-installation-using-linux-shell-script/]

Is RMAN only way to take backup and delete Archive Logs?

On primary db:
===============
OS: Windows 2003 server 32-bit
Oracle: Oracle 10g (10.2.0.1.0) R2 32-bit
On Physical standby db:
===============
OS: Windows 2003 server 32-bit
Oracle: Oracle 10g (10.2.0.1.0) R2 32-bit
Data Guard just configured. Archive Logs are properly being shipped to standby db. Is RMAN only way to take backup and delete Archive Logs from both primary and standby db? What other command can be used?
Thanks

No, but anything else is way more work. Without using RMAN you would have to find another way to keep track of applied logs.
RMAN make this very simple :
RMAN> CONFIGURE ARCHIVELOG DELETION POLICY TO APPLIED ON ALL STANDBY;Using another method would be like using the handle of your screwdriver as a hammer.
See "RMAN Recipes for Oracle Database 11g" ISBN 978-1-5959-851-1
Best Regards
mseberg

How to delete archive logs on the standby database....in 9i

Hello,
We are planning to setup a data guard (Maximum performance configuration ) between two Oracle 9i databases on two different servers.
The archive logs on the primary servers are deleted via a RMAN job bases on a policy , just wondering how I should delete the archive logs that are shipped to the standby.
Is putting a cron job on the standby to delete archive logs that are say 2 days old the proper approach or is there a built in data guard option that would some how allow archive logs that are no longer needed or are two days old deleted automatically.
thanks,
C.

We are planning to setup a data guard (Maximum performance configuration ) between two Oracle 9i databases on two different servers.
The archive logs on the primary servers are deleted via a RMAN job bases on a policy , just wondering how I should delete the archive logs that are shipped to the standby.
Is putting a cron job on the standby to delete archive logs that are say 2 days old the proper approach or is there a built in data guard option that would some how allow archive logs that are no longer needed or are two days old deleted automatically.From 10g there is option to purge on deletion policy when archives were applied. Check this note.
*Configure RMAN to purge archivelogs after applied on standby [ID 728053.1]*
Still it is on 9i, So you need to schedule RMAN job or Shell script file to delete archives.
Before deleting archives
1) you need to check is all the archives are applied or not
2) then you can remove all the archives completed before 'sysdate-2';
RMAN> delete archvielog all completed before 'sysdate-2';
As per your requirement.

Delete archive log files on physical standby

I want to delete the archive log files on the phsical standby database when they were applied. The archive log files are in the flash recovery area. So i used
CONFIGURE ARCHIVELOG DELETION POLICY TO APPLIED ON STANDBY;
in rman.
My question:
Does rman delete the archive log files immediately when they are applied or when the disk space becomes scarce?

Hi,
They're marked as reclaimable when applied, so they're still on the disk but when the flah recovery area will become full they'll be deleted to give space to the new one, and so...
Loïc

Is there a way to apply archive logs, standby DB is opened with 'resetlogs'

Hi All,
I have setup a standby database (Oracle 10g SE). I applied hot backup and archive logs to the standby database till yesterday. I have opened the standby database using 'alter database open resetlogs;" and validated the application functionality using the standby database.
Now I want to regularly apply logs from the Primary database to the standby database, but today I have opened the standby database using 'alter database open resetlogs;"
Need assistance to know the way to apply archive logs, once the standby database is opened with 'resetlogs' option to keep it in sync with the Primary database.
Thanks
Kunal

Welcome to OTN,
I have setup a standby database (Oracle 10g SE). I applied hot backup and archive logs to the standby database till yesterday. I have opened the standby database using 'alter database open resetlogs;" and validated the application functionality using the standby database.Standby opened with *resetlogs* ? What you did? have you performed failover of standby database?
Now I want to regularly apply logs from the Primary database to the standby database, but today I have opened the standby database using 'alter database open resetlogs;"
Need assistance to know the way to apply archive logs, once the standby database is opened with 'resetlogs' option to keep it in sync with the Primary database.Have you enabled Flashback & created Restore point? If so you can do it.. If not rebuild standby again.
Check this scenario How To Open Physical Standby For Read Write Testing and Flashback [ID 805438.1]

How do I setup RMAN not to delete archive log files on the source database so GoldenGate can process DDL/DML changes?

I want to setup RMAN not to delete any archive log files that will be used by GoldenGate.   Once GoldenGate is completed with the archive log file, the archive log file can be backup and deleted by RMAN.   It's my understanding that I can issue the following command "REGISTER EXTRACT <ext_name>, LOGRETENTION" to enable to functionally.   Is this the only thing I need to do to execute to enable this functionally?

Hello,
Yes this is the rigth way using clasic capture.
Using the command : REGISTER EXTRACT Extract_name LOGRETENTION.
Create a Oracle Streams Group Capture (Artificial) that prevent RMAN archive deletion if these are pending to process for Golden Gate capture process.
You can see this integration doing a SELECT * FROM DBA_CAPTURE; after execute the register command.
Then, when RMAN try to delete a archive file pending to process for GG this warning appear AT RMAN logs:
Error:     RMAN 8317 (RMAN-08317 RMAN-8317)
Text:     WARNING: archived log not deleted, needed for standby or upstream capture process.
Then , this is a good manageability feature. I think is a 11.1 GG new feature.
Tip. To avoid RMAN backup multiples times a archive pending to process, there is a option called BACKUP archivelog not backed 1 times.
If you remove a Capture process that is registered with the database you need to use this comand to remove the streams capture group:
unREGISTER EXTRACT extract_name LOGRETENTION;
Then if you query dba_capture, the artificial Streams group is deleted.
I hope help.
Regards
Arturo

When to delete Archive Log files ? and is safe to delete ?

Hi all,
I have a question, my DB is running in Archive Log mode and is growing day by day, so should I delete archive log files and where i find that my which files are old and how to delete theses files, for info I also take full RMAN and export backup regularly .
abbas

Well, if you're not comfortable with Backup and Recovery principles, i'd advise you to first read TFM: Backup and Recovery Concept(click) for you data safety's sake.
Anyway, just to give you a glance at what could happen, immagine suche a situation where your database is made of 5 different datafiles (whatever they are - SYSTEM, SYSAUX, UNDO, ...), controlfiles and online redo logs. If, for example your backup is done in a timeline such as:T0 : Backup datafile F1 and F2
T1 : Backup datafile F2 and controlfile
T2 : Backup datafile F3, F4
T3 : Backup datafile F5
T0' : Backup datafile F1 and F2
T1' : Backup datafile F2 and controlfile
T2' : Backup datafile F3, F4
T3' : Backup datafile F5
...If your server crashes (for example is thrown though the 5th floor window..) in order to make a full recovery, you could proceed multiple ways.
. Restore files from Tx' backups. Then you'd need every archived redo logs created from T0' to now in order to be able to do a full recovery.
. Restore files from backups; T3, T0', T2' and rectreate controlfile. Then you'd need every archived redo log created from T3 (inclusive).
. Restore Tx backup, ...
. Restore ...
and so on.
What's important is that you're at least able to resynch a full-set backup. What I mean is: if you restored "T3, T0', T2' and rectreate controlfile", in order to open the database you'll absolutely need every archived redo log created between T3 and T2' inclusive. If one is missions, you won't be able to open it.
That is the principle. Read the concept book I linked to get more infos.
Regards,
Yoann.

Delete archive log file

hello,
I am using oracle 10g on linux i want to delete archive log file automaticaly there is any way to do this.or anyone can tell me scripts for do this.ur help regarding this is highly appreciated
Regard,s
Umair Iqbal

Hi,
Can you please let us know why you want to delete the archive log file?
BTW, you can use RMAN to achieve this by taking the backup of archive log and delete the original file using the following command:
Backup archivelog all delete input;Regards

Recovery window retention policy deletes archive logs before a backup?

Hi All,
Oracle 11G on Windows 2008 R2
This afternoon, I changed my RMAN retention policy from 'RETENTION POLICY REDUNDANCY 3' to RETENTION POLICY RECOVERY WINDOW OF 3 DAYS'
However, i checked tonight and after my daily backup ran, all the archive logs prior to the backup had been deleted! Thus meaning i dont think i can restore to any point in time, prior to my daily backup. All the .arc logs were there after the backup. So i tried another test and kicked off the daily backup again. During the backup process, the archive logs got deleted again! Now i don't have any archive logs..
Is this proper behaviour of RETENTION POLICY RECOVERY WINDOW?? I thought it would keep all the files needed for me to restore to any point in time for the previous 3 days. When i used REDUNDANCY, with my daily backups, it kept 3 days worth of backups+ archive logs so i could restore point-in-time to any point. How can i use RECOVERY WINDOW so that i can actually restore to any point-in-time for the 3 days??
I wanted to change to RECOVERY WINDOW since i read that by using REDUNDANCY it only keeps X copies of a backup (so if i ran the backup 3 times in a day, i would only have those 3).
Thanks in advance.

Hi All,
Here is the SHOW ALL output:
RMAN> show all;
RMAN configuration parameters for database with db_unique_name MMSPRD7 are:
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 PARALLELISM 1 BACKUP TYPE TO BACKUPSET; # default
CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default
CONFIGURE ARCHIVELOG BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default
CONFIGURE MAXSETSIZE TO UNLIMITED; # default
CONFIGURE ENCRYPTION FOR DATABASE OFF; # default
CONFIGURE ENCRYPTION ALGORITHM 'AES128'; # default
CONFIGURE COMPRESSION ALGORITHM 'BASIC' AS OF RELEASE 'DEFAULT' OPTIMIZE FOR LOA
D TRUE ; # default
CONFIGURE ARCHIVELOG DELETION POLICY TO NONE; # default
CONFIGURE SNAPSHOT CONTROLFILE NAME TO 'D:\ORACLE\DATABASE\ORA11G\DATABASE\SNCFM
MSPRD7.ORA'; # default
Here is the RMAN script:
Recovery Manager: Release 11.2.0.3.0 - Production on Mon Jan 20 23:03:12 2014
Copyright (c) 1982, 2011, Oracle and/or its affiliates. All rights reserved.
connected to target database: XXX (DBID=)
RMAN> CROSSCHECK ARCHIVELOG ALL;
2> CROSSCHECK BACKUPSET;
3> CROSSCHECK BACKUP;
4> CROSSCHECK COPY;
5> DELETE NOPROMPT EXPIRED ARCHIVELOG ALL;
6> DELETE NOPROMPT EXPIRED BACKUPSET;
7> DELETE NOPROMPT OBSOLETE;
8> BACKUP CURRENT CONTROLFILE;
9> BACKUP AS COMPRESSED BACKUPSET DATABASE PLUS ARCHIVELOG DELETE INPUT;
Also, not sure if you needed the whole RMAN output, but here is the deletion part:
RMAN retention policy will be applied to the command
RMAN retention policy is set to recovery window of 3 days
using channel ORA_DISK_1
Deleting the following obsolete backups and copies:
Type                 Key    Completion Time    Filename/Handle
Backup Set           1392   15-JAN-14
Backup Piece       1392   15-JAN-14          F:\ORAFRA\MMSPRD7\BACKUPSET\2014_01_15\O1_MF_NNNDF_TAG20140115T190054_9FG89R8N_.BKP
Backup Set           1393   15-JAN-14
Backup Piece       1393   15-JAN-14          F:\ORAFRA\MMSPRD7\BACKUPSET\2014_01_15\O1_MF_ANNNN_TAG20140115T192204_9FG9KDHX_.BKP
Backup Set           1397   16-JAN-14
Backup Piece       1397   16-JAN-14          F:\ORAFRA\MMSPRD7\BACKUPSET\2014_01_16\O1_MF_ANNNN_TAG20140116T190027_9FJWNW6L_.BKP
Backup Set           1400   17-JAN-14
Backup Piece       1400   17-JAN-14          F:\ORAFRA\MMSPRD7\BACKUPSET\2014_01_17\O1_MF_ANNNN_TAG20140117T190138_9FMK349M_.BKP
deleted backup piece
backup piece handle=F:\ORAFRA\MMSPRD7\BACKUPSET\2014_01_15\O1_MF_NNNDF_TAG20140115T190054_9FG89R8N_.BKP RECID=1392 STAMP=836938856
deleted backup piece
backup piece handle=F:\ORAFRA\MMSPRD7\BACKUPSET\2014_01_15\O1_MF_ANNNN_TAG20140115T192204_9FG9KDHX_.BKP RECID=1393 STAMP=836940124
deleted backup piece
backup piece handle=F:\ORAFRA\MMSPRD7\BACKUPSET\2014_01_16\O1_MF_ANNNN_TAG20140116T190027_9FJWNW6L_.BKP RECID=1397 STAMP=837025228
deleted backup piece
backup piece handle=F:\ORAFRA\MMSPRD7\BACKUPSET\2014_01_17\O1_MF_ANNNN_TAG20140117T190138_9FMK349M_.BKP RECID=1400 STAMP=837111700
Deleted 4 objects

How to delete archive log files from ASM through Grid Control

Hi
Anybody suggest me how to delete archive log files from ASM through Grid Control.
Thanks

It is important to specify both, the oracle version and os version when posting, so confusions can be avoided.
In this particular case, since you are referring to asm and grid control you could be talking about either 10gR1, 10gR2 or 11gR1; but I strongly suggest you to avoid us to be guessing. In either case, you sould go to the maintenance tab of the target database and program a scheduled 'delete noprompt obsolete;' procedure. This will purge the information stored at the Flash recovery area, which I assume you have declared inside the ASM.
~ Madrid
http://hrivera99.blogspot.com/

Best way to delete transcoded and proxy media?

Hello,
I am trying to free up some disc space and am curious what is the best way to delete transcoded and proxy media in fcpx? I know I can open up a library bundle and delete the folder, but is this safe? There must be a better option...
Thanks,
Austin

Austin Samuel wrote:
Hello,
I am trying to free up some disc space and am curious what is the best way to delete transcoded and proxy media in fcpx? I know I can open up a library bundle and delete the folder, but is this safe? There must be a better option...
Thanks,
Austin
I don't know of any other way.
Proxy and Transcoded media can always be re-generated if the original files are in place.
If this question refers to your system drive then a BIG suggestion is to aquire a fast dedicated media drive.
Al

Manual delete archived log files

Because we don't have RMAN in our development server, I need to use manual operation to delete all archived logs. Is my procedure correct and safe?
SHUTDOWN IMMEDIATE
STARTUP MOUNT
ALTER DATABASE NOARCHIVELOG;
EXITRun OS command to manually delete archived log files:
rm /oradata/arch/*
Login to sqlplus
SHUTDOWN IMMEDIATE
STARTUP MOUNT
ALTER DATABASE ARCHIVELOG;
STARTUP OPENThanks!

linuxos wrote:
Oh I suppose RMAN need to be configured somthing before use. I tried it, and find no pre-requisite is required. Thanks!
If the archives are deleted manually in open mode, how can Oracle match the archived logs' retention policy? Does Oracle store the archived logs in data dictionary?While you can delete archivelogs manually any time you want, you should let rman manage them with appropriate rman commands, preferably in a script that you schedule for regular execution.
Some of your questions lead me to question if you understand that archivelogs are not actively open by the database, and they technically are not part of the database. They are simply a series of "offline" copies of the online redo logs. They are written to once, when an online redo is being archived, then they just sit there until needed for a recovery.

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Best way of deleting archive logs on standby when backup taken on primary

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