An application program must "associate" itself with a generic resource name before establishing LU-LU sessions. This association is accomplished when an application program identifies itself as a generic resource member by issuing SETLOGON OPTCD=GNAMEADD after OPEN ACB, but before SETLOGON OPTCD=START.

An application program can terminate the association with a generic resource name by issuing SETLOGON OPTCD=GNAMEDEL. Termination of the association can occur even after the application program establishes LU-LU sessions. GNAMEDEL indicates to VTAM® to stop using this generic resource member when distributing new LU-LU session initiations.

An application that is enabled for persistence in a sysplex that supports multinode persistent sessions will have its association with its generic resource name terminated during recovery of that application from a node failure. In this case, the application must issue the SETLOGON OPTCD=GNAMEADD macroinstruction to be associated with a generic resource name.