"Naming cache checkpoint interval?"

    A CDI naming cache is used to improve the performance of nodename
    address resolution.  This cache supersedes the DECdns cache and is
    used when looking for addresses in the Domain and Local services, in
    addition to DECdns.  Note that other applications that use DECdns
    directly continue to utilize the DECdns cache.

    Periodically, DECnet-Plus saves a snapshot of the in-memory naming cache
    to disk.  This allows systems, during startup, to have a naming cache
    that is already populated with entries.  In other words, the contents
    of the naming cache are preserved across system reboots.

    The frequency of this checkpoint operation can be changed.  For example,

    $ MCR NCL Set Session Control Naming Cache Checkpoint Interval 12:00:00

    changes this interval to every 12 hours.

    You have the option of setting the naming cache checkpoint interval.
    Enter any legal OpenVMS delta time value (the default is 8 hours).