media/image5.png

The Before-Image Writer (BIW) is an optional background process that continually writes modified BI buffers to disk. The BIW enhances database performance because it ensures a steady supply of empty BI buffers.

As a best practice, after you start up a database, you should start the BIW.

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