The PSWAPM privilege lets the user's process control whetherit can be swapped out of the balance set by executing the Set ProcessSwap Mode ($SETSWM) system service. A process must have this privilegeto lock itself in the balance set (to disable swapping) or to unlockitself from the balance set (to enable swapping).
With this privilege, a process can create a process that islocked in the balance set (swap mode is disabled) by using an optionalargument to the Create Process ($CREPRC) system service or, whenthe DCL command RUN is used to create a process, by using the /NOSWAPPINGqualifier of the RUN command. Furthermore, a process can lock apage or range of pages in physical memory using the Lock Pages inMemory ($LCKPAG) system service.
Grant this privilege only to users who need to lock a processin memory for performance reasons. Typically, this will be a real-timeprocess. If unqualified processes have the unrestricted abilityto lock processes in the balance set, physical memory can be heldunnecessarily and thereby degrade system performance.
HP OpenVMS Guide to System Security
Security for the System Administrator
