In the case of a true foreign tape whose ownership is never "obtained" by any system, the tape is left the "insert pending" category and every time that OAM is recycled on any system that OAM will be re-polled to see if it wants it. If you are running in this situation (were two systems with unique TMS systems are sharinga robot AND you want foreign tapes to be inserted into the robot) then I would recommend the following. Change the SAMPLE CBRUXENT source distributed and add code so that tapes owned by CPU-1 are ignored by CPU-2 and tapes owned by CPU-2 are ignored by CPU-1. The downside is that anytime that new volumes are added to either system the CBRUXENT exit on the other system will need to be modified.
Another option would be to add a WTOR to ask the operator. But then, the operator will be asked on CPU-1 for every tape owned by CPU-2 that is inserted; and the operator on CPU-2 will be asked for every tape owned by CPU-1 inserted. So the next question is, if the robot is shared is there any reason why you would not want to create a shared TMC? Russell Witt CA-1 Level-2 Support Manager -----Original Message----- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] Behalf Of Robert A. Rosenberg Sent: Wednesday, March 14, 2007 1:54 PM To: IBM-MAIN@BAMA.UA.EDU Subject: Re: 2 LPARS Sharing 3494 ATL - Why does SY1 always update TCDB ? At 23:34 -0500 on 03/11/2007, Russell Witt wrote about Re: 2 LPARS Sharing 3494 ATL - Why does SY1 always update T: >So many years ago (5+ I believe) we changed the CBRUXENT sample >source so that a foreign tape was left in the "insert pending" >category (and therefore other systems would be polled). A (possibly) stupid question on this process - I can see how this will work when the "foreign" tape is really one whose serial number is owned by the 2nd (or subsequent) system to be polled but what happens when a REAL foreign tape gets inserted? Since your code will no longer automatically accept ownership of the tape when it is first offered (under the assumption that it is a local tape owned by one of the other systems) each system polled will pass it on expecting that there is still another system who needs to be polled and offered the tape. Once it is thus rejected by all systems, what happens? Is is re-offered to the systems (possibly with a flag saying that this is a second offer so that it will be accepted by the first system to get the 2nd offer) or does it just hang in "insert pending" status due to no system being willing to take responsibility for "owning" it? ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
