Automatic STOP/START of a secondary Control-D monitor according to queue size in GENERIC CLASSes

Control-D can automatically change the number of active Control-D decollation monitors based on the number of JOBs in the JES spool that are waiting for decollation in the generic class.

The following table lists the parameters in CTDPARM that manage this process.

Table 126a Parameters to manage automatic stopping or starting of a secondary Control-D monitor

If the number of JOBs in the spool is low (less than the GENJOBM parameter), the main monitor will stop the last of the secondary decollation monitors. If the number is too high (more than the GENJOBX parameter), the main monitor will activate the next secondary decollation monitor. GENJOBX should be higher than GENJOBM.

Note:

• The main Control-D monitor checks the queue in generic classes defined for the first monitor in the GENCLASS parameter. The same set of generic classes should be defined for each monitor. If not, it is possible that some generic decollation missions will stop working. As a result, the number of SYSOUTs in the GENERIC queue will grow.
• Since decollation monitors can be stopped automatically, ensure that you set the MONITOR parameter correctly in decollation missions running under this Control-D environment:
  • In regular decollation missions, the MONITOR parameter should be set to 1 or empty. This prevents a situation where a mission is not processed because the specified monitor is not active.
  • In all generic decollation missions, the MONITOR parameter should be empty. This prevents a situation where a decollation mission with a specified monitor number is not processed because the corresponding monitor is stopped.