Dwight,
  Right you are!  The DSMSERV EXTEND LOG command requires the size parameter
to be 1 less than the DSMFMT command previously issued. Go figure.

  Any how, I now find that the TSM 3.7.2 log file max might just be 5.5GB
and the 'extend log' command requires the 1mb reduction.

Thanks to all,
John G. Talafous              IS Technical Principal
The Timken Company            Global Software Support
P.O. Box 6927                 Data Management
1835 Dueber Ave. S.W.         Phone: (330)-471-3390
Canton, Ohio USA  44706-0927  Fax  : (330)-471-4034
talafous AT timken DOT com           http://www.timken.com