VMS Help SET, PROCESS, Qualifiers, /RESOURCE_WAIT  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /RESOURCE_WAIT
       /NORESOURCE_WAIT

    Enables resource wait mode so that the process waits for
    resources to become available. If you specify the /NORESOURCE_
    WAIT qualifier, the process receives an error status code when
    system dynamic memory is not available or when the process
    exceeds one of the following resource quotas: direct I/O limit,
    buffered I/O limit, or buffered I/O byte count (buffer space)
    quota.

                                 CAUTION

       Disabling resource waiting should be performed with caution,
       as doing so can have unexpected effects on constituent
       sharable images and runtime libraries. Refer to the $SETRWM
       service in the OpenVMS System Services Reference Manual for
       additional information.