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BMCLINK
BMCLINK is an inter-region control facility that is provided with DELTA IMS to allow DELTA IMS users to communicate with IMS systems. The BMCLINK task must run on each CPU that has an IMS system that DELTA IMS will access.
You can start and stop BMCLINK asynchronously with IMS. A BMCLINK BMP is associated with each IMS system that DELTA IMS services. SMU security must authorize these BMPs to issue at least the IMS /CHANGE command. For DBCTL regions, the DELTA IMS LOADLIB that is specified in the BMCLINK JCL STEPLIB must be APF authorized.
BMCLINK maintains an internal trace of all important activities. The trace is always active and you can print it on demand. The trace also appears in the SYSUDUMP. The trace table minimum size is 16 KB, but you can expand it if necessary.
After the main BMCLINK task starts, a BMCLINK primary logical unit (PLU) task is attached. A VTAM ACB is required for the DELTA IMS TSO session to communicate with BMCLINK. Parameter data specifies the ACBNAME that is used. BMCLINK opens the VTAM ACB and permits logons, then waits for input from a DELTA IMS TSO user. When BMCLINK receives input, the PLU notifies the main BMCLINK task of the input and waits for a response to be queued.
