The contents of the cluster-wide association and channel counters
    database may be displayed with the PMDF COUNTERS/SHOW command.
    A PMDF COUNTER/SYNCHRONIZE command is implicitly performed by
    this command; the database contents are synchronized with the
    in-memory section(s) before being displayed.

    Note that as part of the implicit PMDFCOUNTERS/SYNCHRONIZE
    operation, if the cluster-wide, on-disk database does not already
    exist, the PMDF COUNTERS/SHOW command will create it. And if
    the node-specific, in-memory cache of counters does not already
    exist, the PMDF COUNTERS/SHOW command will create it too.