The BIW improves database performance by performing before-image overhead operations in the background. For more information on the BIW, see
Managing Performance.
The BIW process counts as one user. You might have to increment the value of the Number of Users (
-n) parameter to allow for the BIW. However, the BIW does not count as a licensed user.
You can increase the number of before-image buffers with the Before-image Buffers (
-bibufs) parameter. Increasing the number of buffers increases the availability of empty buffers to client and server processes.