While Recovery Manager (RMAN) is highly recommended for database backup and recovery operations your organization may require you to perform backups using a custom process or you might have an interest in knowing what is […]
Category: Backup and Recovery
Remove a Database from a RMAN Recovery Catalog
There will come a time that you will need to remove a database from the recovery catalog. Removing a database from the recovery catalog removes all metadata for the database from the catalog.
Registering a Database with a Recovery Catalog
Registering a database with a recovery catalog records the existence of the database with the recovery catalog. Once the database is registered metadata about the database and its backups will be stored in the recovery […]
Creating an RMAN Recovery Catalog
The RMAN Recovery Catalog is a database schema that holds the metadata detailing the RMAN backup operations performed on the target database. The metadata include the following information from about the target database: database structure, […]
Archival Backups RMAN Backups for Long-Term Retention
RMAN has the ability to make an archival backup that is exempt from the configured retention policy. An archival backup is an all inclusive self-contained backup of the database at specific point in time. Archival […]
Dropping a Database via RMAN
In Oracle Database 10gR1 Oracle introduced the RMAN command DROP DATABSE. This one simple statement has the ability to completely remove a database including all RMAN backups with the optional INCLUDING BACKUPS clause.
Backup Duplexing with RMAN
RMAN has the ability to write duplexed backup sets creating up to four identical copies of each backup piece in a backup set to different destinations. Duplexing provides an extra layer of protection against disaster, […]
Creating Image File Copy Backups with RMAN
When using RMAN to back up to disk you have two options in how to write the backups. The default is a backup set which uses unused block compression and is in an RMAN-specific format. […]
User Managed Consistent Database Backup (Cold Backup)
While Recovery Manager (RMAN) is highly recommended for database backup and recovery operations your organization may require you to perform backups using a custom process or you might have an interest in knowing what is […]
Backup Does Not Run When Scheduled in CRON
You have created a script to perform the backup and have tested it to verify that it works as expected. However when the script is executed in CRON it either appears to not run or […]
Quick RMAN configuration for disk based backups
This document will detail a quick set up of RMAN for disk based backups using Oracle Database 11gR2 base.
Restore database to another host using RMAN
This document will detail the steps to restore a database on a new host using RMAN. For this demonstration we will be using Oracle Database 11gR2 on Linux and disk based backup.
Recover from a corrupt or missing control file
This document will detail recovery scenarios dealing with missing or corrupted control files using RMAN disk based backups.
Recover from a missing data file
This document will detail two recovery scenarios dealing with a missing datafile using a RMAN disk based backup.
Block Media Recovery with RMAN
This document will detail a block media recovery scenario using a RMAN disk based backup. If you need a document for configuring RMAN see the post Setting up RMAN for backup and recovery using Database […]
Multiplexing the Redo Log Files
To protect against failure of the redo logs, Oracle allows redo logs to be multiplexed. With multiplexed redo logs two or more identical copies can be placed in separate locations. The log writer process (LGWR) […]
Configure Flashback Database
As your database grows larger the length of time required to recover to a point in time grows. In some cases time required to restore all files to perform a point in time recovery becomes […]
Setting up RMAN for backup and recovery using Database Control
Using Database Control you can configure RMAN to back up you database to disk or tape with relative ease. This document will detail how to configure RMAN for disk based backups and perform a backup.
Enable/Disable Archive Log Mode 10g/11g using Database Control
Database Control makes a lot normal administrative tasks easier. You can enable and disable Archive Log Mode with a few mouse clicks as this document will detail. If you would like to do this through […]
Enable/Disable Archive Log Mode 10g/11g
Note: It is recommended to perform a backup of the database (after a shutdown normal or immediate) prior to changing the archive status of a database. If you would like to perform these tasks using […]