Describes IMS database recovery using database image copies and forward recovery log files to restore the most recent database updates.
The process includes:
- Preparing for Forward Recovery
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- Run the Image Copy utility to make backups of all databases.
- Establish backup procedures to back up all databases at specified intervals moving forward.
- Enable forward recovery log files and set a location for generated log files.
- Establish backup procedures to back up all forward recovery log files at specified intervals moving forward.
- Recovering IMS Databases
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- Do one of the following:
- Run the Image Restore utility to restore selected databases; then run the Recovery utility without specifying any image copy databases. This applies the updates from forward recovery log files to the databases found in the current location.
- Run the Recovery utility specifying image copy databases. This restores the image copies and then applies the updates from forward recovery log files to the specified databases.
- Following each recovery done using the Recovery utility, always run the Image Copy utility to back up the recovered databases.
