Required data

To calculate the space allocation requirements, estimate some values for the environment in which you want to run CICS® IA.

Refer to the worksheet supplied in Table 1 and Table 2. These values are used in later calculations.
Table 1. Values required for each CICS region
Required Data Description Value
PROG_TRAN_RATIO Estimate of the number of transactions and program associations. For example, program PROGA can be associated with more than one transaction.  
NUM_CICS_PROG Number of programs that contain EXEC CICS commands.  
AVG_EXEC_LONG Average number of EXEC CICS calls, per program, that have a data space key greater than 32. These commands are the EXEC CICS ENQ and EXEC CICS DEQ.  
AVG_EXEC_SHORT Average number of EXEC CICS calls, per program, that have a data space key less than or equal to 32. These commands are all EXEC CICS commands apart from EXEC CICS ENQ and EXEC CICS DEQ commands.  
AVG_DTP Average number of EXEC CICS DTP calls, ALLOCATE, CONNECT, SEND, CONVERSE, and FREE commands.  
NUM_DB2_PROG Number of programs that contain EXEC SQL commands.  
AVG_DB2 Average number of EXEC SQL calls per program.  
NUM_IMS_PROG Number of programs that contain EXEC IMS™ commands.  
AVG_IMS Average number of EXEC IMS calls per program.  
NUM_MQ_PROG Number of programs that contain EXEC MQ commands.  
AVG_MQ Average number of EXEC MQ calls per program.  
NUM_AFF_PROG Number of programs that contain EXEC AFF commands.  
AVG_AFF Average number of EXEC AFF calls per program.  
NUM_NATURAL_PROG Number of Natural programs that contain ADABAS or PROGRAM calls.  
AVG_NATURAL Average number of ADABAS or PROGRAM calls per Natural program.  
Table 2. Values required for VSAM and DB2 calculations
Required Data Description Value
NUM_REGION_V Number of CICS regions sharing the VSAM file. This value is required to calculate the VSAM file space allocation.  
NUM_REGION_D Total number of CICS regions in which CICS IA is collecting. This value is required to calculate the DB2® table and index sizes. The CICS IA DB2 database can contain data from more than one set of VSAM files.