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*SYSDFN will still reach multiple checkpoints during the course of the
save. Thanks for your input, Sue. I went through the entire thread again trying to understand it and I think I'm pretty much there. Rob's initial post talked about not doing journalling. We intentionally don't kill jobs in MSGW for fear of permanent data corruption. We have a process to gracefully kill non-MSGW jobs and ALCOBJ *EXCL to thwart the out of sync data saved. This works fine. The one or two jobs in MSGW are the only ones that cause a couple files to not get saved every so often due to no SWA. That is the entire reason for looking into save while active *SYSDFN so we don't lose entire files. In my tests, with SAVLIB *SYSDFN, the waiting only occurred on files set for update. Of course, with *SYSDFN it saved the file after the wait whereas *NO left the object out. I didn't notice much of a time difference but you said the quantity of objects could also determine checkpoint processing. We have many objects saved in a library but we never list more than one library on the SAVLIB. Do you think we will notice our backups taking longer with *SYSDFN than *NO? I have never seen *SYSDFN on a SAVLIB skip any objects, even ones in use. If the *SYSDFN were to skip some objects for some reason, it would be logged, right? Most of our data libraries are only a couple thousand objects. One of our software packages has its data library with about 146,000 objects. That logs some messages to QSYSOPR in the backup job (job hold large number of objects). Anything we should watch out for especially with V5R4? Thanks in advance! Craig
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