There are a few issues with VMS V8.3. However, the issues are very minor. Solutions for these issues are present in JAMS V4.2K (and later).If it’s not convenient to upgrade JAMS, these issued can be avoided by doing two things:

First, make sure that the SYSUAF file does not have global buffers enabled.  Check this by doing the following:

$ SET DEFAULT SYS$SYSTEM
$ DIR/FULL SYSUAF
Look at “File attributes:”, the last item is the number of global buffers.  If that value is greater than 0, set it to zero with:
$ SET FILE/NOGLOBAL SYSUAF

The second action to perform is:

Check the value of the CTLPAGES setting by doing the following:

$ WRITE SYS$OUTPUT F$GETSYI(“CTLPAGES”)
Define the JAMS_SPARE_CTLPAGES logical name to be 40% of the value of CTLPAGES so, if CTLPAGES was 1056, you would do:
$ DEFINE/SYSTEM/EXEC JAMS_SPARE_CTLPAGES 422