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The After-Image Writer (AIW) is an optional background process that continually writes filled AI buffers to disk. The AIW enhances database performance because it ensures a steady supply of empty AI buffers.

As a best practice, after you start up an AI-enabled database, you should start the AIW.

The command to start the AIW for a running database is:
proaiw db-name
Note: The AIW is available only with the OpenEdge Enterprise RDBMS license. You can run only one AIW per database.