  Increasing the number of logins permitted? 
 The Question is:
 
How do I change the default vaule for "login" from 64 to 500?
 
 The Answer is:
 
  Add the following line in SYSTARTUP_VMS.COM:
 
    $ STARTUP$INTERACTIVE_LOGINS == 500
 
  To change the value on a running OpenVMS system, use the command:
 
    $ SET LOGIN/INTERACTIVE=500
 
  Add the following line in MODPARAMS.DAT:
 
    MIN_IJOBLIM = 500
 
  You will also need to examine the BALSETCNT and MAXPROCESSCNT system
  parameter values to ensure sufficient process slots are available for
  the additional logins now permitted.  Add the following lines into
  MODPARAMS.DAT if alterations are required:
 
    MIN_BALSETCNT = nnn
    MIN_MAXPROCESSCNT = nnn + mmm
 
  Adjusting the RJOBLIM setting (MIN_ROBLIM in MODPARAMS.DAT) may also
  be of interest, as this value controls the total number of network
  logins permitted.
 
  With all OpenVMS VAX versions and OpenVMS Alpha versions prior to V7.0,
  you may need to decrease the VIRTUALPAGECNT setting to permit the
  (larger) page table data structures that will result from an increase
  in the maximum number of process -- these data structures must fit into
  the available system space.  With the 64-bit addressing changes available
  in OpenVMS Alpha V7.0 and later (the page tables have been moved out of
  their traditional location in system space and into the newly created
  and dedicated page table space), having large numbers of processes --
  each with large a virtual address space -- is far easier to configure.
 
  Then run AUTOGEN with FEEDBACK and SETPARAMS or REBOOT to generate and
  save the new system parameter settings, and then reboot the system to
  activate the saved parameter settings.
 
  Of course, you will also need to consider other system parameter settings
  and other issues related to available hardware resources as a result of
  increasing the numbers of processes, issues such as the available physical
  memory configured in the system.  The performance management manual in
  the OpenVMS documentation set will be of interest.
 
