Description

   To clear (zero) the counters in a node-specific, in-memory
   cache, issue the COUNTERS CLEAR command on that particular node.
   The command creates the node-specific, in-memory section of
   association and channel counters if it does not already exist.
   Then it zeros all fields in the in-memory section. Note that the
   counters will be zeroed without first merging their values into
   the cluster-wide database of channel counters. If a cluster-
   wide, on-disk database does not already exist, a new one will be
   created. Finally, the fields in the on-disk database for numbers
   of stored messages, message recipients, and message volumes are
   set based on the entries in the PMDF queue cache database.

   Either the association counters, or channel counters, or both,
   may be cleared. The default is to clear both association and
   channel counters.

   If you want to update the on-disk database with the old in-memory
   values before clearing them, then you should issue a COUNTERS
   SYNCHRONIZE command before issuing the COUNTERS CLEAR command.