o  This command requires exclusive database access (the database
       cannot be open or accessed by other users).

    o  The Enabled and Disabled qualifiers are mutually exclusive.

    o  The Large_Memory=Enabled and Large_Memory=Disabled qualifiers
       are mutually exclusive.

    o  Changes made by the RMU Set Global_Buffers command are not
       journaled. You should make a subsequent full database backup
       to ensure recovery.

    o  When global buffers are set to reside in large memory
       (Large_Memory=Enabled), the process that opens the database
       must be granted the VMS$MEM_RESIDENT_USER rights identifier.
       Oracle Corporation recommends that you use the RMU Open
       command when you utilize this feature.