Affinity factor example one


This example assumes that these parameter settings are in effect:


  • All BBI-SS PASs are running with ACONCICS=YES set in their respective BBISSP00 parameter members.
  • All BBI-SS PASs are running with DYNTGT=NO set in their respective BBISSP00 parameter members (indicating that TGTDEFs will have no affect on the systems).
  • The UBBPARM data set for PASA and PASB contains:
    • A BBIJNT00 member with no IBM CICS entries
    • A CMRDTL00 member with an entry for each of the production CICS regions (CICS01-CICS60) only
  • The UBBPARM data set for PASC contains:
    • A BBIJNT00 member with no CICS entries
    • A CMRDTL00 member with an entry for each of the test CICS regions (CICS61-CICS72) only
  • None of the CICS regions use either the INITPARM SIT parameter or a BBIJNT00/BMCICS00 to indicate to the region which PAS it is to use.

Case 1.A—a new production CICS region (CICS52) becomes active

Because the CICS region does not have a directive to use a specific BBI-SS PAS, it places a request into the common communications request queue. This element is picked up by one of the three BBI-SS PASs, which determines that it should connect to PASB based upon the following accumulated affinity weights:

PAS

Weights

Description

PASA

 1024
 -270
 3072
 3826

Initial weight

Weight for each connected CICS region (negative)

Weight for BBI-SS PAS having CMRDTL00 entry for the region

Total weight for BBI-SS PAS

PASB

 1024
 -240
 3072
  3856

Initial weight

Weight for each connected CICS region (negative)

Weight for BBI-SS PAS having CMRDTL00 entry for the region

Total weight for BBI-SS PAS

PASC

 1024
  -50
 974

Initial weight

Weight for each connected CICS region (negative)

Total weight for BBI-SS PAS

Case 1.B—a new test CICS region (CICS66) becomes active

Because the CICS region does not have a directive to use a specific BBI-SS PAS, it places a request into the common communications request queue. This element is picked up by one of the three BBI-SS PASs, which determines that it should connect to PASC based upon the following accumulated affinity weights:

PAS

Weights

Description

PASA

 1024
 -270
 754

Initial weight

Weight for each connected CICS region (negative)

Total weight for BBI-SS PAS

PASB

 1024
 -240
784

Initial weight

Weight for each connected CICS region (negative)

Total weight for PAS

PASC

 1024
  -50
3072
 4046

Initial weight

Weight for each connected CICS region (negative)

Weight for BBI-SS PAS having CMRDTL00 entry for the region

Total weight for BBI-SS PAS


 

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