I am informed that this particular case was NOT caused by CA-BAB. (We hav e had other cases.) We don't know what was the cause.
z/OS isn't relevent here, though we have had similar error messages involving sharing with z/OS at other times. We have 3 VM systems, and 10 guests, involved. We issued: QUERY 366 (or QUERY TAPE FREE) on all systems that have access to 366. Every system responded with TAPE 0366 FREE ATTACH 366 * on some systems produced "Tape 0366 not attached; tape assigned elsewhere." Eventually we found a guest that allowed us to attach the tape, so we assune that system had it assigned. We haven't the foggiest why -- that system wasn't running anything special. I gather that CP (or VMTAPE) sends a CCW to the controller to get the "assigned elsewhere" information. Is there any CCW to find out where it IS assigned?
