Comments for a Hursley view on WebSphere MQ

Comment on Some rambling thoughts on the two full repositories in your WebSphere MQ cluster… by peterpotkay

peterpotkay — Sun, 10 Aug 2008 01:14:28 +0000

“Some years after working at a new place we have 4 FRs (v6 mq) and i just havent had any problems.”

I think its more likely that because you are at MQ 6.0 at the new place you have less cluster problems. It wasn’t until the later fix packs of 5.3 that MQ clustering was stable.

Always use 2 and only Full Repositories. If you want to use more, there should be a technical reason why.

Comment on Using WebSphere MQ Explorer as a read-only viewer by tschne1

tschne1 — Fri, 06 Jun 2008 14:07:30 +0000

Hi Dale,

I’ve found your article to be very useful. For the record, here are steps I’ve taken to set up display only Explorer access on z/OS:

1) Define a new userid to be the MCAUSER for the SVRCONN channel that will get display only access (make sure the userid is not connected to a RACF group which has any access beyond that listed in the following bullets).

2) Grant the userid UPDATE access to the MQQUEUE class profile that controls access for each of these three queues (if these queues are currently protected by GENERIC profiles that provide access to many queues, you might need to define less GENERIC or fully qualified profiles so that access is limited to the queues listed here):
- SYSTEM.MQEXPLORER.REPLY.MODEL
- AMQ.* (the prefix of a temporary dynamic queue built from the previous queue)
- SYSTEM.COMMAND.INPUT (not sure, but the SYSTEM.ADMIN.COMMAND.QUEUE qalias might sometimes be used instead depending on the maintenance level).

3) Grant the userid READ access to the MQCMDS profiles that protect the DISPLAY commands

Regards,

Tom

Comment on Custom SSLSocketFactory with WMQ Base Java by protocol7 » Blog Archive » Custom SSL factory

protocol7 » Blog Archive » Custom SSL factory — Sat, 31 May 2008 12:01:23 +0000

[...] providing a custom SSL socket factory. WebSphere MQ is an example of such an API. As described in this post by Peter Broadhurst, you can quite easily provide such a custom socket factory with the benefit of getting much [...]

Comment on Simplest sample applications using WebSphere MQ JMS by hananafci

hananafci — Mon, 26 May 2008 11:00:28 +0000

hello ,
i have a task to make java program (jms) that will listen to mq queue and whenever a new message is added to the queue the program should print it so as long as the program is running ,any message added to the queue must be printed by the program and now am searching for any one to help me how to make this .
thanks alot

Comment on We’re moving! by jeffgrandfield

jeffgrandfield — Thu, 10 Apr 2008 12:09:08 +0000

The new blog is awful! bring back this one!!

Comment on Using WebSphere MQ Explorer as a read-only viewer by Dale Lane

Dale Lane — Thu, 03 Apr 2008 09:07:04 +0000

@Jim
Technically speaking, I imagine that it might be possible - I’m not aware of any dependencies on other plugins included in the WMQ Eclipse distribution.

I don’t know whether this would be a supported configuration if you ran into problems, though.

Comment on Some rambling thoughts on the two full repositories in your WebSphere MQ cluster… by mq

mq — Wed, 02 Apr 2008 11:43:24 +0000

Nope,
I have worked in a system where we had 2 FR (v 5.3) and we use to get cluster problems 1 or twice a year. Normally related to network problems.

Some years after working at a new place we have 4 FRs (v6 mq) and i just havent had any problems.

Comment on Using WebSphere MQ Explorer as a read-only viewer by Jim

Jim — Tue, 01 Apr 2008 18:40:51 +0000

Hi Dale,

If we have a workstation that has v6.0.2.3 of the MQ client and the Eclipse software running on it , is there a way we can copy the MQExplorer plugins and use MQExplorer on the workstation rather than installing MQExplorer on it?

Comment on Simplest WebSphere MQ Publish/Subscribe…ever! by Kivanc

Kivanc — Thu, 20 Mar 2008 16:06:45 +0000

@Saket Rungta
I have MQ 5.3 and I have installed IA9H: IBM Message Service Client for .NET. But I am receiving an error message while connecting:
The type initializer for ‘IBM.XMS.WMQ.WmqConnectionFactory’ threw an exception.

at System.Runtime.CompilerServices.RuntimeHelpers._RunClassConstructor(IntPtr type)
at System.Runtime.CompilerServices.RuntimeHelpers.RunClassConstructor(RuntimeTypeHandle type)
at System.Reflection.RuntimeConstructorInfo.Invoke(BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
at System.Reflection.ConstructorInfo.Invoke(Object[] parameters)
at IBM.XMS.Impl.XMSFactoryFactoryImpl.CreateConnectionFactory()
at ConsoleApplication1.Program.Main(String[] args) in C:\Documents and Settings\Administrator\Desktop\ConsoleApplication1\ConsoleApplication1\Program.cs:line 22

Do you have any idea why it could be?

Comment on What topics would you like us to cover? by jcv

jcv — Tue, 18 Mar 2008 17:27:54 +0000

I would like to see a review of preferred or recommended uses of STOP CONN vs STOP CHL on svrconn channel. If I understand well, STOP CHL command has to main functions: to stop channel activity leading to termination of appropriate threads or processes, and to disable automatic resume of its activity by using STATUS(STOPPED), where applicable (not with QMNAME or CONNAME parameters specified). Hence, I see clear preference in favour of STOP CHL when channel has to be disabled, or where addressing multiple instances of channel for termination is desirable, with or without QMNAME or CONNAME parameters specified. On the other hand, when shutting down one particular instance of svrconn channel is needed, and this is not feasable via STOP CHL, then I guess STOP CONN should be used. Another recommendation was to use it when STOP CHL fails in QUIESCE or FORCE mode. Would you add please some comment on it?

Comment on Creating a new Performance Queue Manager by Sudhir M

Sudhir M — Sun, 09 Mar 2008 21:04:06 +0000

I am interested in the DefaultPQBufferSize paramater

Wondering are there any comparative stats on an average how much % performance would be gain by setting DefaultPQBufferSize when compare with just using the default.

Comment on Using PowerShell with remote queue managers by Dale Lane

Dale Lane — Tue, 04 Mar 2008 23:26:29 +0000

@Reg - I’ve sent you a copy of the modified SupportPac by email. Thanks again for highlighting the issue.

And many thanks for the congratulations

Comment on Using PowerShell with remote queue managers by Reg Danford-Cordingley

Reg Danford-Cordingley — Tue, 04 Mar 2008 12:38:19 +0000

Hi Dale,

Many congratulations on the recent addition to your family which I saw on your other blog.

I saw your last post on the Powershell for MQ forum so if you could send me the new version of the Powershell Pac when you have a chance that would be great. Once I have it installed, I will let you know how I get on.

I have also taken the liberty of adding a link here to my tech blog site (www.tech-crm.com).

Regards,

Regdc

Comment on Disclaimer by Hector Soto

Hector Soto — Tue, 19 Feb 2008 00:35:46 +0000

I have a question, We need to update MQ v5.3 to v6.0 in an AIX 5, and we use NIM and SOE in our box,
Do we need to consider some topics in addition that instruction`s manual “Quick Beghinnning for AIX”?

Comment on WebSphere MQ SSL “gotchas”: common mistakes and how to avoid them by John Manning

John Manning — Mon, 18 Feb 2008 15:22:05 +0000

Yes I have refreshed the security (refresh security (*)) and the channel is only running when the client is active; therefore it has also been restarted… Just to answer the next possible question… I am running MQ ver. 6.0.2.3 and the client is connecting with a java implementation.