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| scar |
 Posted: Wed Jan 07, 2009 10:11 am Post subject: Regarding migration from MQ 5.3 to 6.0 |
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Centurion
Joined: 23 Jun 2004
Posts: 145
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We are currently using MQ 5.3 on AIX 5.2
We are migrating to V6 over the next week end.
We have to uninstall 5.3 and install 6.0
I have a question regarding the messages that will be in the Queues during migration.
During uninstallation and installation the messages in the queues will be retained right ?
After installing V6, and starting the queue manager the messages will sill be in the queues right ?
Do i need to take any precautionary measures to retain the messages ?
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| Vitor |
| Posted: Wed Jan 07, 2009 10:38 am Post subject: Re: Regarding migration from MQ 5.3 to 6.0 |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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| scar wrote: |
| We have to uninstall 5.3 and install 6.0 |
Why? It's recommended to upgrade in place.
| scar wrote: |
| During uninstallation and installation the messages in the queues will be retained right ? |
Possibly. It depends if the uninstallation process removes/unmounts the file system. I'd hate to rely on it personally.
| scar wrote: |
| After installing V6, and starting the queue manager the messages will sill be in the queues right ? |
Again, I'd hate to rely on it. The first time you start a v6 queue manager it will perform a one-time conversion of logs and messages, but I've never actually done an uninstall/reinstall myself; it's not the recommended course.
| scar wrote: |
| Do i need to take any precautionary measures to retain the messages ? |
It's always best practice to take a system level backup before major work. I'd also unload the queues if you insist on uninstalling first.
_________________
Honesty is the best policy.
Insanity is the best defence. |
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| scar |
| Posted: Wed Jan 07, 2009 10:49 am Post subject: |
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Centurion
Joined: 23 Jun 2004
Posts: 145
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In the MQ V6 info center under Quick Beginnings for AIX, Migrating to V6
| Quote: |
Uninstall WebSphere MQ and any WebSphere MQ service updates.
Install WebSphere MQ Version 6.0 by following the tasks set out in the book |
To upgrade to V6 we have to uninstall the previous versions. |
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| mqjeff |
| Posted: Wed Jan 07, 2009 10:50 am Post subject: |
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Grand Master
Joined: 25 Jun 2008
Posts: 17447
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| Uninstalling the product code does not delete the queue managers. |
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| bruce2359 |
| Posted: Wed Jan 07, 2009 11:04 am Post subject: |
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Poobah
Joined: 05 Jan 2008
Posts: 9469
Location: US: west coast, almost. Otherwise, enroute.
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Take backups of your messages and object definitions before you do any upgrades.
Have a recovery plan in case your messages and/of object definitions are lost. Test the plan. Test the plan.
_________________
I like deadlines. I like to wave as they pass by.
ב''ה
Lex Orandi, Lex Credendi, Lex Vivendi. As we Worship, So we Believe, So we Live. |
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| Vitor |
| Posted: Wed Jan 07, 2009 11:05 am Post subject: |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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| scar wrote: |
In the MQ V6 info center under Quick Beginnings for AIX, Migrating to V6
| Quote: |
Uninstall WebSphere MQ and any WebSphere MQ service updates.
Install WebSphere MQ Version 6.0 by following the tasks set out in the book |
To upgrade to V6 we have to uninstall the previous versions. |
So it does! 
Shows the last time I looked in the documentation before I did an upgrade... 
On the plus side, at least I'm right from v7 as the v7 infocentre says:
| Quote: |
| You do not have to uninstall your current version before installing WebSphere MQ Version 7.0. |
I'm just ahead of the curve 
_________________
Honesty is the best policy.
Insanity is the best defence. |
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| PeterPotkay |
| Posted: Wed Jan 07, 2009 11:15 am Post subject: |
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Poobah
Joined: 15 May 2001
Posts: 7722
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Only on Windows can you upgrade in place from 5.3 to 6.0. On all the UNIXs you have to uninstall first.
Admit it Vitor, you run everything on Windows.
_________________
Peter Potkay
Keep Calm and MQ On |
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| Vitor |
| Posted: Wed Jan 07, 2009 12:52 pm Post subject: |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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| PeterPotkay wrote: |
| Admit it Vitor, you run everything on Windows. |
My guilty secret, revealed at last
_________________
Honesty is the best policy.
Insanity is the best defence. |
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| SAFraser |
| Posted: Wed Jan 07, 2009 2:00 pm Post subject: |
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Shaman
Joined: 22 Oct 2003
Posts: 742
Location: Austin, Texas, USA
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When we upgraded from 5.3 to 6.0 on Solaris in development, I had no trouble with damage to messages.
For production, to be completely safe, our plan called for PUTting applications to be quiesced. We waited until all messages were consumed and queues were empty before proceeding with the upgrade.
As mentioned, a backup strategy is essential. There are several threads on the forum that might help you. Here is an example of one:
http://www.mqseries.net/phpBB2/viewtopic.php?t=40218&highlight=
PS I'm glad Vitor is out of the Windows closet. |
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| bruce2359 |
| Posted: Wed Jan 07, 2009 2:17 pm Post subject: |
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Poobah
Joined: 05 Jan 2008
Posts: 9469
Location: US: west coast, almost. Otherwise, enroute.
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| Quote: |
| ...until all messages were consumed and queues were empty before proceeding... |
For some sites, for some applications, this might not be possible.
_________________
I like deadlines. I like to wave as they pass by.
ב''ה
Lex Orandi, Lex Credendi, Lex Vivendi. As we Worship, So we Believe, So we Live. |
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| belchman |
| Posted: Thu Jan 08, 2009 6:42 am Post subject: |
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Partisan
Joined: 31 Mar 2006
Posts: 386
Location: Ohio, USA
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RE: "Admit it Vitor, you run everything on Windows."
Ouchie!!
_________________
Make three correct guesses consecutively and you will establish a reputation as an expert. ~ Laurence J. Peter |
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| Vitor |
| Posted: Thu Jan 08, 2009 6:48 am Post subject: |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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_________________
Honesty is the best policy.
Insanity is the best defence. |
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