Sometimes when monitoring a program with CA Intertest for CICS the program may receive an AICA abend. The same program can be execute without being monitored and it runs to a successful completion. The problem can be caused by the additional overhead added by CA Intertest for CICS for every instruction being executed by the program being monitored.
CA Intertest for CICS has an ICT parameter that can be used if an AICA abend is encountered during the monitoring of a program.
ICT: Instruction Counter for Preventing AICA Abends
This command instructs CA InterTest for CICS to issue a DFHKC TYPE=WAIT,DCI=CICS macro each time the specified program executes nnnnn instructions. Use this option to prevent incorrect AICA abends in high CPU-utilization programs where overhead was increased by the CA InterTest monitoring activity.
To set the instruction counter to prevent an AICA abend, enter:
ICT=nnnnn Specifies the number of instructions. Replace nnnnn with a decimal number between 1 and 65,534.
The programmer can add the ICT option to their program by using the CNTL command. For example
At a clear screen in CICS enter the following command and press the ENTER key
CNTL=ON,PROG=COBDEMO,ICT=10000
The following messages will be displayed
CAIN4580 ICT option(s) processed
CAIN4513 This request has been processed.
Then to verify that the ICT parameter is active for program COBDEMO please enter the following command at a clear screen in CICS and press the ENTER key
CNTL=INQ,PROG=COBDEMO
The following report will be generated for COBDEMO showing the ICT value specified.
COBDEMO For userid .ANY
Symbolic file is PROTCOM
ICT=10000
* End of Report *