How Does a CICS or VTAM Transaction Connect to a View Database, Utilizing XMS?
CICS or VTAM transactions connect to a View database, via a cross-memory services (XMS) task, based on a match of the SUBSYS=... parameter defined for the transaction in the EBCXMCTR table.
A sample transaction would contain:
Correspondingly, the XMS task parameters would contain the same SUBSYS=xxxx value.
When the EBCXMCTR table is assembled, and there are no SUBSYS=xxxx fields in the transactions, then the default of SUBSYS=XMC2 (for View/Deliver 12.2) would be used.
Similarly, if there is no SUBSYS=... parameter defined in the XMS task, then the default of SUBSYS=XMC2 (for View/Deliver 12.2) would be used.