Daemon Privilege and Priority

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Chapter 4 VMS : Daemon Privilege and Priority

Daemon Privilege and Priority

OPER

To send multicast and broadcast messages, the Rendezvous daemon must have OPER privilege. Without this privilege, Rendezvous programs will not be able to create transport objects.

The best way to ensure this privilege is to install the Rendezvous daemon with OPER privilege. The file TIBRV_STARTUP.COM does this automatically.

ALTPRI

The Rendezvous daemon process is as an extension of the operating system’s network device driver. To avoid data loss, it must respond immediately to network I/O. To ensure immediate response, the daemon must run at elevated priority—preempting interactive users and the processes that support them.

The daemon executable always runs with ALTPRI privilege, which enables elevated priority. This privilege is in effect whether the daemon starts automatically or explicitly. You do not need to configure anything to set this privilege.