Joined: 03 Oct 2009 Posts: 1786 Location: Bloomington, IL
I presume that you are attempting to refer to $AVRS. If so, a job archived in $AVRS has been removed from the spool and can no longer be manipulated through SDSF or similar product. $AVRS provides other ways to manipulate archived sysouts; if you are licensed for the product, the manuals are free for the asking.
That said, there are better ways to get the start and end times of a job. An easy way is through your job scheduler, if your shop uses one; a hard way is from SMF.