Normal buffer allocation for CCTL regions and threads

You must specify the normal buffer allocation for both CCTL regions and CCTL threads when CCTL (coordinator control) regions require fast path resources.

To specify the normal buffer allocation, use the following parameters specified in the database resource adapter (DRA) startup table:

CNBA: Specifies the normal buffer allocation of each active CCTL region
FPB: Specifies the normal buffer allocation for CCTL threads

When the CCTL connects to DBCTL, the number of CNBA buffers is page fixed in the fast path buffer pool. However, if CNBA buffers are not available, the connect fails.

Each CCTL thread that requires DEDB buffers is assigned its fast path buffers (FPB) out of the total number of CNBA buffers.

For more information about the CCTLNBA parameter, refer to IMS Version 15.3 System Administration.