To establish the Sybase TCP environment, execute the SYOP transaction or load the SYBOPEN program during phase III initialization at CICS start-up.
SYOP invokes module SYBOPEN, which loads the configuration CSECT (SYLSCFG) and uses the information stored in SYLSCFG to:
Determine the required size of the Task Related User Exit (TRUE) global area
Enable the TRUE exit
Invoke the TRUE exit to establish sessions with the configured IBM TCP address spaces
Start all listeners configured for this region
When the environment is initialized, you should see several messages in the CICS system output. There should be one INITAPI message for each IBM stack.
For example:
SYBOPEN ENABLE OF TRUE EXIT COMPLETED SUCCESSFULLY SYBOPEN STATE TABLE SUCCESSFULLY INITIALIZED SYBOPEN INITAPI COMPLETE FOR SSID TCPIP SYBOPEN LISTENER STARTING ON PORT 7041, THROUGH INTERFACE TCPIP SYBOPEN LISTENER STARTING ON PORT 7043, THROUGH INTERFACE TCPIP SYBOPEN ENVIRONMENT ESTABLISHED AND LISTENERS STARTING SYBOPEN LISTENER STARTED ON PORT 7041 SYBOPEN LISTENER STARTED ON PORT 7043
If the SYOP transaction is executed from a CICS terminal, the following message will also be displayed on the terminal window:
ENVIRONMENT ESTABLISHED AND LISTENERS
STARTED
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