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| shodel |
 Posted: Thu May 10, 2007 12:45 am Post subject: Does MQ client 6.0 work with QM 5.3? |
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Newbie
Joined: 10 May 2007
Posts: 2
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Hello,
our data center will sometime this summer upgrade the MQ servers from 5.3 to 6.0. I have an java server application that uses JMS to connect to some of those servers. Right now, we're using the MQ 5.3 java libs, but I am thinking about decoupling our upgrade to 6.0 libs from the data center's server upgrade.
Thus, my question is:
Can I use the Java client libs of version 6.0 to connect to MQ 5.3 servers?
We're using transport type Client.
I am quite sure that IBM, Google and even this fine forum has the answer to this already, but I seem unable to pose the right question. So, feel free to just answer by dropping an URL.
Thanks,
Andreas |
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| Vitor |
| Posted: Thu May 10, 2007 12:50 am Post subject: |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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Yes they can.
_________________
Honesty is the best policy.
Insanity is the best defence. |
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| shodel |
| Posted: Thu May 10, 2007 12:56 am Post subject: |
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Newbie
Joined: 10 May 2007
Posts: 2
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| Good Lord, you're fast! Thanks a million! |
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| zpat |
| Posted: Thu May 10, 2007 1:15 am Post subject: |
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Jedi Council
Joined: 19 May 2001
Posts: 5866
Location: UK
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| Upgrade the clients first because older JMS clients can fail on MQV6 queue mangers due to a maintenance change that can make JMS clients fail to connect. |
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| Vitor |
| Posted: Thu May 10, 2007 1:18 am Post subject: |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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| zpat wrote: |
| Upgrade the clients first because older JMS clients can fail on MQV6 queue mangers due to a maintenance change that can make JMS clients fail to connect. |
Really? I'm looking at some v5.3 clients connected to some v6 queue managers at the moment..... 
(Time to reconsider the upgrade timetable perhaps.....)
_________________
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Insanity is the best defence. |
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| zpat |
| Posted: Thu May 10, 2007 1:56 am Post subject: |
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Jedi Council
Joined: 19 May 2001
Posts: 5866
Location: UK
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| Vitor |
| Posted: Thu May 10, 2007 2:08 am Post subject: |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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So you're ok if the clients are v5.3.10 or later?
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| zpat |
| Posted: Thu May 10, 2007 4:14 am Post subject: |
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Jedi Council
Joined: 19 May 2001
Posts: 5866
Location: UK
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| Yes, but make sure the actual JMS and MQ JAR files being used are the ones you have installed, and not a downlevel copy deployed with the application. |
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| Vitor |
| Posted: Thu May 10, 2007 4:16 am Post subject: |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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| zpat wrote: |
| Yes, but make sure the actual JMS and MQ JAR files being used are the ones you have installed, and not a downlevel copy deployed with the application. |
We rebuild the application for each new release. Paranoia is only a problem if they're not really out to get you. 
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| marcin.kasinski |
| Posted: Thu May 10, 2007 4:28 am Post subject: |
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Sentinel
Joined: 21 Dec 2004
Posts: 850
Location: Poland / Warsaw
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I remember situation...
Long time ago a few times some developers placed MQ jars into ear.
Sometimes this jars was from WIN and PRD server was on AIX.
We had lots of problems because of it.
We had to explain them that it is not a good idea.
People can do strange things 
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Marcin |
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| Vitor |
| Posted: Thu May 10, 2007 4:36 am Post subject: |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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| marcin.kasinski wrote: |
I remember situation...
Long time ago a few times some developers placed MQ jars into ear.
Sometimes this jars was from WIN and PRD server was on AIX.
We had lots of problems because of it.
We had to explain them that it is not a good idea.
People can do strange things |
That's why WE build the application, not the developers. Source code control is the only way to fly in a large, multi-platform environment.
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Insanity is the best defence. |
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