DBACLASS.COM is a knowledgebase for Oracle Database administrators, Shell script to delete old archives using RMAN. I am 11g OCP and OCE(RAC and GRID Infrastructure). #!/bin/bashexport ORACLE_HOME=/oracle/app/oracle/product/12.1.0.2.0export ORACLE_SID=PARIS12Cexport PATH=$ORACLE_HOME/bin:$PATHif(typeof ez_ad_units!='undefined'){ez_ad_units.push([[728,90],'dbaclass_com-medrectangle-3','ezslot_1',105,'0','0'])};if(typeof __ez_fad_position!='undefined'){__ez_fad_position('div-gpt-ad-dbaclass_com-medrectangle-3-0')}; delBackup () {rman log=/home/oracle/arch_del.log << EOFconnect target /DELETE noprompt ARCHIVELOG ALL COMPLETED BEFORE sysdate-1;CROSSCHECK ARCHIVELOG ALL;DELETE EXPIRED ARCHIVELOG ALL;exitEOF}# Main. Following this policy you will receive an error if some archivelog has not been backed up at least twice, then they are automatically deleted when more open disk space is required (~70%). delBackupif(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'dbaclass_com-medrectangle-4','ezslot_2',108,'0','0'])};if(typeof __ez_fad_position!='undefined'){__ez_fad_position('div-gpt-ad-dbaclass_com-medrectangle-4-0')}; 00 22 * * * /u01/app/oracle/rman_arch_del.sh > /tmp/rmanarch.log, Your email address will not be published. Thank you for your answer.

Upgrade database from 11g to 12c manually, How to run SQL tuning advisor for a sql_id, Upgrade database from 12.1.0.2 to 12.2.0.1, ORA-04036: PGA memory used by the instance exceeds PGA_AGGREGATE_LIMIT, Transparent Data Encryption (TDE) in oracle 12c, How to drop and recreate temp tablespace in oracle, Prerequisite check CheckActiveFilesAndExecutables failed, Steps to Apply PSU patch on oracle 11g database. Right? CONFIGURE DEVICE TYPE DISK BACKUP TYPE TO COMPRESSED BACKUPSET PARALLELISM 4; 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 LOAD TRUE ; # default, CONFIGURE ARCHIVELOG DELETION POLICY TO NONE; # default. Well it's not a surprise that FRA is filled by archivelogs when they are not deleted . Configure RMAN with the following policy: Execute the archivelog deletion at backup time (in this case archivelogs older than 7 days) Archive log files which are used by SQL apply process at Logical Standby database is said to be Foreign Archive LogsorRemote Archived Logs. I'd suggest you to create a script to make backup of archivelogs with "delete input" clause (if you have a physical backup), but you've said that "Loosing ability to recover database is acceptable". One configuration can be when you have configured the ARCHIVELOG DELETION POLICY to something else --- e.g. even if its many days older: If you have a DataGuard environment you need to be careful before removing archivelogs as they are the If you have an isolated database but it is in archive mode, you need to: Delete until it has been backed up n times. This site uses Akismet to reduce spam. As this is an Oracle setting, best to check and discuss this with your DBA. If you are overriding the default automatic log deletion capability, periodically perform the following steps to identify and delete archived redo log files that are no longer needed by SQL Apply: To purge the logical standby session of metadata that is no longer needed, enter the following PL/SQL statement: This statement also updates the DBA_LOGMNR_PURGED_LOG view that displays the archived redo log files that are no longer needed.

It seems that if the Oracle setting "Backup Optimization" is set to ON, then your symptoms can occur. After all the redo entries of Archive log files are applied using SQL apply process, these files are kept for a specific amount of time, a time set for LOG_AUTO_DEL_RETENTION_TARGET or for 1440 minutes if LOG_AUTO_DEL_RETENTION_TARGET is not specified. including the. Key skills : RMAN , GG , DG , RAC , Virtualization in OVMM.I have experience in Banking and Telecom domain. >CONFIGURE ARCHIVELOG DELETION POLICY TO NONE; # default. So you need to: Delete when it has been applied into the Standby. I don't know of no bugs or other issues about it. Archivelogs continue to grow until DB_RECOVERY_FILE_ DEST_SIZE is reached and at some point DB will hung. so its recommended to execute a scheduled manual deletion. Then the space occupied. FRA has a static size, that can be altered (DB_RECOVERY_FILE_DEST_SIZE) and you need to purge the olders archivelogs. (Loosing ability to recover database is acceptable) or the only way is to create RMAN script that will for example forcefully remove archive logs older then a week.? Following this policy you will receive an error if some archivelog has not yet been applied to all the Standby databases From below documentation:Configuring the RMAN Environment, "Archived redo logs can be deleted automatically by the database or by user-initiated RMAN commands. I've had a bit of a search and wonder if your issue might be related to the following: https://www.veritas.com/support/en_US/article.000125398. According to the documentation it is the Retention Policy that determines whether archivelogs are not needed any more. The backup policy runs every 12 hours daily, Master server Netbackup 8.1.1 redhat 6.3Version of AIX 7.1. Configure RMAN with one of the following options: Execute the archivelog deletion at backup time in the Primary instance (in this case archivelogs older than 7 days (4726), Deleting files from the destination folder when backup completed. "Loosing ability to recover database is acceptable". Users are notified by the application that backups are failing, but since data itself are not critical users often ignore it. I have one more question. For archived redo log files in the fast recovery area, the database retains them as long as possible and automatically deletes eligible logs when additional disk space is required.". This site uses Akismet to reduce spam. I though that this setting determine when archivelogs become obsolete and space can be reclaimed (not 15% rule). Delete when it has been sent to the Standby although it has not been applied. Is it possible to modify above RMAN settings so the archive logs are cleared automatically in above scenario? Application availability is more important then the data it stores (this is what I meant by the sentence you quoted). Learn how your comment data is processed. CONFIGURE RETENTION POLICY TO REDUNDANCY 1; # default, CONFIGURE BACKUP OPTIMIZATION OFF; # default, CONFIGURE DEFAULT DEVICE TYPE TO DISK; # default, CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '%F'; # default. The only reference to 15% in regards to FRA I found in the documentation is: "If, for instance, the RMAN retention policy requires keeping a set of backups larger than the flash recovery area disk quota, or if the retention policy is set to NONE, then the flash recovery area can fill completely with no reclaimable space. including the. making the database to fail with an ORA-00257: Archiver error, Without going into discussion about app design I would appretiate if you could answer my question. Required fields are marked *. by that archivelog will be marked as reclaimable. Please correct if I'm wrong until this point. If the archivelogs have been backed up (either to the Flash Recovery Area itself, or to another destination) and the archivelog not deleted. What about Retention Policy setting? The space occupied by archivelogs created in the Flash Recovery Area would become reclaimable in 2 circumstances: A) If the free space becomes less then 15% in the Flash Recovery Area then all, the archivelogs in the Flash Recovery Area which are not needed for recovery, by the current backups in the FRA will become obsolete and the space occupied. Note: If you are using a flash recovery area, auto-deletion is based on the flash recovery areas space pressure. You didn't have problem before, because your FRA size was enough. When application is installed local weekly backups are configured by default. I don't know if I understood your enviroment, but answering to your question, you can make a RMAN script with something like this "DELETE NOPROMPT ARCHIVELOG ALL;" programmed to run hourly, daily (The best option for your). Let's say that we have an application that is storing it's data in Oracle 11gR2 database. No object matched the specified predicate. Why bother with archivelog mode at all? Once the timer exceeds this limit, Archive log files are automatically deleted. However you may face issues if you receive a unexpected workload that may fill up the FRA Save my name, email, and website in this browser for the next time I comment. To warn the DBA of this condition, an entry is added to the alert log and to the DBA_OUTSTANDING_ALERTS table (used by Enterprise Manager). NBU Continuous data protection gateway Unable to create a snapshot of the specified VM. 1. What can be the causes (including bugs/known issues) of archivelogs filling FRA space with following assumptions: - configuration is valid (I mean that with the same config it was working and at some point it stop to work), The only "cause" of archivelogs "filling" the FRA is a combination of, a. I understand that there is no "CONFIGURE " RMAN clause that can be used to force automatic archivelog deletion in my scenario. By default, the auto-delete feature is enabled. Your email address will not be published. Reach me at : https://www.linkedin.com/in/jagruti-jasleniya, If you want to be updated with all our articles s, Column Mapping and Transformation in Oracle Golden Gate, Oracle 19c Preupgrade Log Warns Oracle Streams, Infrastructure Identity and Access Management(IAM), Terminating an Autonomous Transaction Processing (ATP) Instance, Import Data Dump File into Oracle Autonomous Data Warehouse Cloud (ADWC) Using Data Pump, OutOfMemoryError:Java Heap Space on OEM 12c Agent, Difference Between Local Listener and Remote Listener, Oracle HCM Cloud Concepts Part 1 (Colored E-Book). You do not have permission to remove this product association. I was hoping that I could get some hints about why archivelogs stop to be deleted in scenario where config is good, backups are successful, retention is configured and it is standalone 11gR2 database. even if its old and has been already backed up: or an error if it has not been sent to all the Standby databases: Switchover and Failover with DataGuard Broker on Oracle 19c, Access RMAN Backups of Old Oracle Incarnations. When you have a database with Archive Mode enabled or a DataGuard environment you need to take care According to RMAN documentation if archived logs are in a fast recovery area, Thank you for giving your valuable time to read the above information. You can enable and disable the auto-delete feature for archived redo logs by using the DBMS_LOGSTDBY.APPLY_SET procedure. Archivelogs will be growing and will not be purged as Oracle will not mark any of them as obsolete (all archivelogs will be needed to perform recovery since last successful backup). It's exactly what Hemant K Chitale answered. but at the same time to keep enough archivelogs available in case of a database recovery scenario. The application is triggering backups through RMAN script once a week which also purges obsolete backups and archivelogs. I have experience of handling planned and unplanned DB role switchover and failovers and monitoring and troubleshooting Database Performance. Applications and Infrastructure Community. Netbackup Status Code 241 (the specified schedule is the wrong type for this request). Since in the above scenario archive logs are not eligible for deletion (they are needed for recovery since last backup) they will not be deleted automatically. of the archive logs to maintain enough space on the Fast Recovery Area for the database to be able to work, The database issues a warning alert when reclaimable space is less than 15% and a critical alert when reclaimable space is less than 3%. to "APPLIED ON STANDBY". will be shown in the SPACE RECLAIMABLE column of V$RECOVERY_FILE_DEST. Can you point me to official documentation that confirms yours A) and ? And the immediate follow-on question is why is a potential failure of the backup not detected in a timely manner? If the requirement is to delete archive log backups automatically (without taking backup), then below shell script can be configured in crontab. The application data are not critical (for most of the users).

input for the Standby recovery. In that case, with a Dataguard Standby database present, archivelogs on the Primary would not be deleted until and unless they have been applied on the Standby database. Let's say that at some point (for any reason) backups start to fail. If you want to be updated with all our articles send us the Invitation or Follow us: Telegram Channel:https://t.me/helporacle, Skant GuptasLinkedIn:www.linkedin.com/in/skantali/, Joel PerezsLinkedIn:Joel Perezs Profile. Only logs in the fast recovery area can be deleted automatically by the database. So why bother with a backup at all? Query the DBA_LOGMNR_PURGED_LOG view to list the archived redo log files that can be removed: Stay tuned forMore articles on Oracle DataGuard. Same as above.

I'm looking for possible ways to prevent DB hung due to archive logs filling FRA. However, the database continues to consume space in the flash recovery area until there is no reclaimable space left.". Users have possibility to alter default backup policy. I would be grateful if someone could confirm if my understanding of the below is correct. I'm trying to find solution that will be suitable for both type of users, those who care about backups and those who don't. My first question is why is the database backup only occurring once a week? Previously I worked with Acute Informatics pvt ltd. and Mobile Tornado where I handled Banking Data Migration , created DR using log shipping , Golden Gate and Data Guard. Low FRA space in relation to volume of redo-archive being generated. So you need to configure a Deletion Policy and schedule a manual archivelog purge. Learn how your comment data is processed. Foreign Archive log files are managed by SQL Apply process. Hello everyone.I have a problem with a policy, Oracle does not automatically delete the archived logs.In the policy it is set up to make 3 copies and delete, but it does.This will cause the filesystem to fill up. Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. that had been already backed up twice) Currently working as Oracle Database Administrator at _VOIS and Blogger (Freelancer) at Oracle-help . To disable automatic deletion of archive logs we can use the following command.