Interface Tasks

Although CICS® runs a number of subtasks (such as journaling and VSAM handling), CICS can be regarded as a single task. All CICS transactions that can generate IBM® Connect:Direct® requests run from this single CICS task. The CICS Interface runs as a set of separate tasks in the CICS address space. At the startup of the CICS Interface, a subtask called CST (controller subtask) is attached by CICS.