GBLPAGFIL

   GBLPAGFIL defines the maximum number of systemwide pages allowed
   for global page-file sections (scratch global sections that can
   be used without being mapped to a file). These global page-
   file sections can be temporary, permanent, system, or group,
   and are allocated from the page file specified in the system
   process header at bootstrap time. When you allow pages for
   global page-file sections, you must increase the size of the
   page file accordingly. Users with CMKRNL privilege can change
   this parameter value on a running system.

   Global page-file sections are created with the Create and Map
   Section system services ($CREATE_GPFILE, $CRMPSC, and $CRMPSC_
   GPFILE_64) without an explicit disk file. These sections are used
   for the RMS global buffers required for shared files. Users of
   shared files should note that global page-file sections cause
   both the global page table and the default system page file
   (PAGEFILE.SYS) to be used. If the value of GBLPAGFIL is too
   small, $CRMPSC issues an error message when you attempt to create
   global page-file sections.

   You must have scratch global sections if you use RMS global
   buffers. Each file using global buffers requires, in the system
   page file, the file's bucket size multiplied by the number of
   global buffers for that file. If the file's bucket size varies,
   as with RMS indexed files, use the maximum bucket size. For
   shared sequential files, use the multiblock count of the first
   stream to perform the $CONNECT service in place of the file's
   bucket size.

   The default value for this parameter is adequate for most
   systems. However, if your site uses RMS global buffering to a
   significant extent, you may need to raise the value of GBLPAGFIL.
   Use the /GLOBAL qualifier of the Install utility to examine
   the number of pages consumed by RMS global buffers. The global
   sections used by RMS for global buffers have the prefix RMS$
   followed by 8 hexadecimal digits.

   Global buffers are enabled with the DCL command SET
   FILE/GLOBAL_BUFFERS, which is described in the VSI OpenVMS DCL
   Dictionary.

   GBLPAGFIL is an AUTOGEN-altered and a DYNAMIC parameter.