Thanks for all of the good discussions. What I am reading here is that the only need to size the PLPA and COMMON is to save DASD space. If you have the DASD space, then just allocate a 2GB (combined PLPA and COMMON) page datasets and be done with it, until 64 bit addressing arrives.
One other point of interest that I have read about is the different between the PLPA and the COMMON page dataset when it comes to storage protection. PLPA is READ and COMMON is READ/WRITE. Can this lead to potential storage overlays? For example, the 1 cylinder PLPA situation where the PLPA overflows to the COMMON page dataset. Those PLPA pages that reside in the COMMON page dataset are no longer storage protected. ---------------------------------------------------------------------- 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
