The Check  One Job command checks  for a single  job that is  active at
the  current   workstation.    The   command  is  intended   for  those
situations  where you want to  ensure that only a  single job is active
before  performing  some  task  that  will  not  operate  correctly  if
multiple jobs are active.

The command has no parameters and would be entered as:

             CHKONEJOB

If  more than  one job  is active  (System Request  or Group  Jobs), an
escape message is sent.

PCs  with  multiple  sessions  and  non-programmable  workstations with
'jump' key jobs  are considered  to be different  workstations and  are
not checked by CHKONEJOB.

Command parameters                                    *CMD
------------------

None.

Restrictions
------------

The command can only be entered interactively or in a CL program.

PCs  with  multiple  sessions and  non-programmable  workstations  with
'jump'  key jobs are  considered to  be different workstations  and are
not checked by CHKONEJOB.

Prerequisites
-------------

The following TAA Tools must be on your system:

     CVTWRKUSR       Convert work user
     EDTVAR          Edit variable
     SNDCOMPMSG      Send completion message
     SNDESCMSG       Send escape message

Implementation
--------------

None, the tool is ready to use.

Objects used by the tool
------------------------

   Object        Type    Attribute      Src member    Src file
   ------        ----    ---------      ----------    ----------

   CHKONEJOB     *CMD                   TAAJOCC       QATTCMD
   TAAJOCCC      *PGM       CLP         TAAJOCCC      QATTCL