HP OpenVMS Guide to System Security > Appendix A Assigning Privileges

SYSLCK Privilege (System)

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The SYSLCK privilege lets the user's process lock systemwide resources with the Enqueue Lock Request ($ENQ) system service or obtain information about a system resource with the Get Lock Information ($GETLKI) system service.

Grant this privilege to users who need to run programs that lock resources in the systemwide resource namespace. However, exercise caution when granting this privilege. Users who hold the SYSLCK privilege can interfere with the synchronization of all system and user software.