IMS facilities affected by ISC

The following topics explain how IMS facilities are affected by ISC processing.

Editing messages
Within IMS, the communication interface is transparent to application programs.
Issuing IMS commands from an ISC session
Although available to the ISC session, IMS operator commands are primarily intended for use by appropriately authorized operators of IMS master terminals and remote terminals that are directly attached to an IMS system.
Effects on parallel sessions
Include the USER keyword when using authorized IMS commands with the NODE keyword.
Using IMS test mode for ISC VTAM sessions
You can test ISC VTAM® communication protocols and editing facilities by putting a back-end IMS system into test mode.
IMS control block storage on ISC parallel sessions
The storage required for the IMS control block structure representing potential sessions is greater than the storage required for control blocks representing input and output message queues.
Relationship of ISC and IMS execution modes
Because the terms synchronous and asynchronous have slightly different connotations within IMS and ISC, the following topics explain the relationship of these execution modes.

Parent topic: Intersystem Communication (ISC)