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Guide for New Developers
Configuring OpenEdge : Understanding the RDBMS architecture : Background processes

Background processes

Background processes are database processes running in the background. The processes enhance database performance and maintain data integrity in the event of a system crash or media failure.
There are four background processes:
*Before-image Writer (BIW): Writes full BI buffers to the BI files on disk.
*After-image Writer (AIW): Writes full AI buffers to the AI files on disk.
*Asynchronous Page Writer (APW): Writes modified database blocks to disk.
*Watchdog (PROWDOG): Cleans up after improperly terminated self-service clients as well as the remote clients of lost servers.