Considerations for MSDB buffers

When calculating buffer requirements for an MSDB database, you should be aware of a few considerations.

The following considerations apply during execution:

• Fast Path buffer requirements vary with the type of call to the MSDB.
• With a GHx/REPL call sequence, an entire segment is kept in the Fast Path buffer until a sync point is reached. If the total size of a series of segments exceeds the NBA (normal buffer allocation), the NBA parameter needs to be adjusted rather than using the OBA (overflow buffer) on a regular basis. You should accommodate the total number of segments used between sync points.
• When using a FLD call, the VERIFY and CHANGE logic reside in the Fast Path buffer.