Release 10.1A: OpenEdge Data Management:
Database Administration

> ## Making an AI file available for reuse

> Marking an AI File as empty

> After you back up a file, you must mark the file as empty so that the database engine can reuse the file. To mark a file as empty, use the AIMAGE EXTENT EMPTY qualifier of the RFUTIL utility. After you mark the file as empty, the database engine overwrites the contents of the file.

> Use the following command to mark the AI file as empty:

>     rfutil db-name -C aimage extent empty [ extent-number | extent-path ]

> If you do not specify an `extent-number` or `extent-path`, RFUTIL automatically marks the oldest full extent as empty.

> Note: Use the RFUTIL AIMAGE EXTENT LIST or RFUTIL AIMAGE EXTENT FULL utility to determine the `extent-number` or `extent-path`.

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