HOURS OF AVAILABILITY OF MVS/TSO AT SIUC

Mainframe services will no longer be available as of December 15, 2009.

Note:  the CMS programming environment was removed from service on June 30, 2005.  In its 
place, SIUC mainframe computer users have the TSO environment in which to submit programs.  
Former CMS users requiring assistance with the change to TSO should contact Information 
Technology's Adam Floro (adam@siu.edu).  Adam has put together a document which covers many 
of the details of this process, and which serves as an introduction to features of TSO.

You may normally submit Mark IV, SAS, COBOL, and other types of mainframe computer programs 
for execution from your TSO account at almost any time.

However, if your program will require the mounting of a tape by the Operations staff, you 
cannot submit the program during third shift on the weekends (that is, 12:01am to 8:00am 
on Saturday and Sunday).

Also, on approved SIUC University holidays, the Network Control Center is normally staffed 
no more than between 9:00am and 5:00pm.  You normally can't submit scheduled programs via 
JobTrac during the hours when NCC is not staffed, but you may be able to submit ad hoc 
programs from your own TSO library during such times (if they do not require tape mounts 
or other intervention by the Operations staff).  For more information, including 
announcements of service outages, NCC's Web site is https://itmfs1.it.siu.edu/ncc/php/.

Other than these restrictions on the submission of programs, you should normally be able 
to access and use your TSO account 24/7/365.