Describe the transaction initiation process of CICS?

Describe the transaction initiation process of CICS?

Following is the sequence of steps to perform the transaction initiation.

- Data in TIOA is placed by TCP.

- The corresponding entry is placed into TCT.

- Transaction identifier is taken from TIOA by KCP and verifies it with the presence in PCT.

- SCP will acquire the TCA, where KCP prepares the task’s control data.

- The application programs are loaded by KCP that are mentioned in PCT.

- When the real storage memory location is not present in PPT, PCP receives the control which loads the application program.

- Later the LOAD module will receive the control.