Progress
Database Administration
Guide and Reference


Starting and Stopping Background Writers

On shared-memory systems, background writers improve performance by continually performing overhead functions in the background. You must manually start these background writers.

There are three types of background writers: asynchronous page writers (APWs), before-image writers (BIWs), and after-image writers (AIWs). The following sections explain how to start up and shut down background writers. See "Managing Performance," for detailed information about background writers.


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