Determining the size of the Fast Path buffer pool for DBCTL
If you are not using the Fast Path 64-bit buffer manager,
you can calculate the number of buffers a Fast Path buffer pool must
contain in a DBCTL environment by using the formula DBBF ≥
A + N + LO + DBFX + CN.
The terms in the formula above are described as follows:
- DBBF
- Fast Path buffer pool size as specified
- A
- Number of active areas that have SDEP segments
- N
- Total of all NBAs
- LO
- Largest overflow buffer allocation among active BMPs and CCTL threads
- DBFX
- System buffer allocation
- CN
- Total of all CNBAs