Ed Jaffe's append is correct: >Program object pages might be fetched and relocated in real-time when a >page fault occurs for a not-yet-fetched page of the module.
Loading upon page-fault is a characteristic (depending on your options) of PDSEs that does not exist for PDS's. Peter Relson z/OS Core Technology Design ---------------------------------------------------------------------- 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