5.13 We use IMAGE logging. At some point (at about 180 users) we get the error message "maximum user count per log process reached (-110)". What can we do?

Check the number of users per logging process. This can be found in SYSGEN under LOG.

 SYSGEN> LO
     ** LOG configurator commands **
     show (sh)        slog (sl)       ulog (ul)
     clear (cl)(c)    exit (ex)(e)    help (he)(h)    hold (ho)
     oclose (oc)      redo
  log>SH
        configurable item              max      min    current
        -----------------            -------  -------  -------
        # of user logging processes     128       2      64
        # users per logging process     1140      1      600

You can change this value with a START NORECOVERY.