Contents
How do I resolve an archive gap in standby database?
1. Resolve Huge GAP between Primary and Standby 2. Resolve GAP when archivelogs Missing/corrupted.
- Verify GAP.
- Stop Redo Transfer (On Primary)
- Find current SCN from Standby.
- Take RMAN Incremental from SCN (On Primary)
- Create Standby Control file.
- Transfer Backup to standby.
- List Control file location on standby.
How do I check my archive log gap in standby database?
Step by Step Process to Resolve gap on the Standby database.
- Check the name and status of database.
- Check for GAP on standby.
- Check redo received on standby.
- Check redo applied on standby.
- Identify missing archive log files.
- Copy archive log files.
- Register archive log files with standby.
How do I use archive logs in standby database?
Copy the archive logs from primary to standby (Dbvisit ARCHDEST location), rename the files and then run dbvisit to apply logs. Copy the archive logs from primary to standby (Dbvisit ARCHDEST location), use RMAN to catalog the files and then apply them using RMAN.
What happens in automatic gap resolution?
Automatic Gap Resolution will take care of such scenarios by following below action plan: 1) ARCH process on the primary database continuously ping the standby database during the outage to determine its status.
How do I fix a gap in data guard?
How to Resolve Gaps in Data Guard Apply Using Incremental RMAN Backup
- Step-1: Check the SCN of Standby ( Dataguard ) database and Find the lowest SCN from the following Queries.
- Step-2: Stop the Dataguard MRP ( Apply ) Process and shutdown Standby database.
How to resolve archive gap between primary and standby databases?
To Check the below query to confirm ARCHIVE GAP Primary and Standby servers. A Physical Standby database syncs with Primary by continuous apply of archive logs from a Primary Database. When the logs are missing on standby difference is huge (Suppose more than 600 logs), you have to rebuild the standby database from scratch.
How does Fal gap resolution work with logical standby databases?
As of 9.2.0 FAL Gap Resolution only works with Physical Standby databases as the process is tied to MRP. Gap recovery on a logical standby database is handled through the heartbeat mechanism. The follow steps can be used to illustrate and verify both automatic and FAL gap recovery.
Where to copy archive logs for gap resolution?
Once the archived logs required for gap resolution have been identified, the logs should be copied into the directory specified by the standby_archive_dest initialization parameter on the standby site.
How to resolve gaps in Data Guard apply?
Step-6: Startup Standby database in nomount mode. Step-7: Restore new standby controlfile on Standby database. Step-8: mount the standby database. SQL> alter database mount standby database; Database altered. Step-9: Catalog the new Incremental backups on Standby Server as follows. Step-10: start Recover database on Standby database.
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