IBM Mainframe Discussion List <IBM-MAIN@BAMA.UA.EDU> wrote on 04/21/2006 09:37:14 PM:
> > > > To shut down, we VARY XCF OFF. The HMC beeps and turns red. We move on. No > > system reset. > The VARY XCF OFF puts the system in a wait state, thus the red icon. > But it does not do a system reset. Obviously you can get away without > it, but I recommend it APAR OY36587 on SP4.1.0 (around 1991) added support for a System Control Program Initiated Reset. When MVS loads a disabled wait state (for example, the 0A2 wait state which results from VARY XCF OFF), MVS issues a Diagnose instruction to initiate the reset and load the disabled wait (assuming the processor environment supports this function, which is indicated by SCCBIRIN in IHASCCB). Jim Mulder z/OS System Test IBM Corp. Poughkeepsie, NY ---------------------------------------------------------------------- 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
