HP OpenVMS Systems

Replacing/upgrading installed application images?

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The Question is:

 
If I have an image installed in memory (like
version 69) and I need to install a new version
of that code (version 70) while the users
are on the system, how can I distribute
the new image?
 
Can I remove the installed version 69 while
users are running it?  Can I install version
70 while users are using version 69 or do I
have to wait for all the users to sign off
the system?
 
Thanks.
 
 

The Answer is :

 
  What is possible depends greatly on the design of the
  application and of the particular image itself.
 
  If the image is compatible across adjacent application
  versions, then you can likely replace the existing image
  and roll the users to the new version.  If the application
  is not compatible, you will have to cause the users to
  exit the image, replace the image, and then restart the
  user applications.
 
  OpenVMS V6.2 and later can have two images of the same
  file name installed entirely in parallel.

  

     

     
answer written or last revised on ( 26-APR-1999 )
     
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