Functional subsystem considerations

After performing a DSI, the status of a functional subsystem (FSS) can be affected. All functional subsystems operating on local mains, including the local that becomes the new global, remain active. The status of a functional subsystem operating on the old global depends upon the way JES3 was ended.

If you disable the global using a *CALL DSI command, then any output writer FSSs and C/I FSSs that were active on the old global remain active when the new global attempts to connect to the old global.

If you disable the global with a system reset and the old global is not restarted as a JES3 local, the response to a *INQUIRY,Q,N=ALL command will show the FSS(s) still executing on the old global. Issuing the *START,main,FLUSH command will remove the FSS(s) from the executing state allowing the FSS(s) to be restarted on a main specified in the SYSTEM= parameter of the FSSDEF initialization statement.