Release 10.1A: OpenEdge Data Management:
Database Administration

After-imaging

The after-imaging feature lets you recover a database that was damaged when a failure caused the loss of the database or primary recovery (before image) area. When you enable after-imaging, the database engine writes notes containing a description of all database changes to the after-image (AI) files. You can use the AI files with the roll-forward recovery process to restore the database to the condition it was in before you lost the database, without losing completed transactions that occurred since the last backup. This chapter details how to use after-imaging and contains the following sections:

After-image areas and extents
Estimating after-imaging disk space requirements
Creating after-image areas
Enabling after-imaging
Managing after-imaging files
AI File Management Utility
Add and reorder AI extents
Performing roll-forward recovery
Disabling after-imaging