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Conference pamsrc::decmessageq

Title:NAS Message Queuing Bus
Notice:KITS/DOC, see 4.*; Entering QARs, see 9.1; Register in 10
Moderator:PAMSRC::MARCUSEN
Created:Wed Feb 27 1991
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:2898
Total number of notes:12363

2756.0. "Can future DMQ for U*IX kit installations pls check for existing DMQ on the system ?" by OZROCK::THOMAN (The House Of Script) Tue Feb 04 1997 01:38

	I've found a few systems where 2 versions of DMQ for Digital
	UNIX are installed concurrently. My bet is that is not a
	supported configuration - correct ?

	I surely can't see any advantages for concurrent versions.

	Can future DMQ kits installation procedures please abort if
	any version of DMQ is already installed ? It might only be
	a minor point, but it's still worth enforcing. 

	Thanks,

	Craig.
	
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2756.1yup, it works, and it's not a good idea for my customerWHOS01::ELKINDSteve Elkind, Digital SI @WHOTue Feb 04 1997 10:2618
    Actually, my customer makes use of having several releases installed,
    since he develops/tests/supports for up to three DmQ releases at a
    time, and so do his customers.  Aborting the install upon finding a
    previous release is probably not a good idea.
    
    It works just dandy, with the following two rules observed:
        -  You can only have one DmQ version running for a bus at a time,
           at least if you're running a dmqbcp process (is this still true
           with 4.0? or with 3.x if the dmqgcp is started up directly from
           the command line?).  We typically see v4.0FT, v3.2A, and v3.0B
           running on the same machine at the same time (on different
           busses). 
    	-  either delete the symbolic links created by the install in
           /usr/bin, and /usr/lib, and/or explicitly specify the path in
           your startup scripts and make files.  We do both.
    
    As to whether it is officially supported?  I don't know, but it works
    for us.
2756.2XHOST::SJZRocking the Messaging Desktop !Tue Feb 04 1997 11:5311
    
    there are no plans to change the way installations install
    over top of existing installations.   that is  how  people
    upgrde the software and it is consistent with  most  other
    software  products  in the industry today.   some products
    inform users that there is an existing installation.  this
    is especially true  when the product  installs in the same
    directory for every version.  we  use a separate directory
    for every version so this is not a problem.
    
    _sjz.
2756.3Fair enough...OZROCK::THOMANThe House Of ScriptTue Feb 04 1997 22:5010
	Seems unusual - different nodes for diff versions would of
	course be cleaner - but if it works..

	I was mainly checking to see if it was an oversight by your
	setld kit developer. It appears not.

	Thx
	
	C.
2756.4XHOST::SJZRocking the Messaging Desktop !Wed Feb 05 1997 00:525
    
    that and SQA has its requirements when it comes to
    install ing different versions of the software.
    
    _sjz.