/sys$common/syshlp/helplib.hlb RPCGEN, Qualifiers, /TIMEOUT_SECONDS  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /TIMEOUT_SECONDS=seconds

    Optional.
    DIGITAL UNIX equivalent: -K
    Default: 120 seconds.

    If INETd starts the server, this option specifies the time (in
    seconds) after which the server should exit if there is no
    further activity. By default, if there are no pending client
    requests, INETd servers exit after 120 seconds. This option is
    useful for customization. If seconds is 0, the server exits after
    serving a request. If seconds is -1, the server never exits after
    being started by INETd.