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MQSeries.net Forum Index » IBM MQ Java / JMS » Unexplained delay in posting and reading messages

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fjb_saper
PostPosted: Tue Feb 22, 2011 8:49 am    Post subject: Reply with quote

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Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY

mqjeff wrote:

FJ -
The PrintStream is being called from the channel. It is an SSL enabled channel and clearly a client channel. This is from the call stack posted above.

And yes, I've pointed out SHARECNV. Are you aware of whether the JMS property CONNOPTS controls that or is there a different way (again, perhaps with the CCDT).

Thanks for the clarification Jeff.

AFAIK the default of shareconv (10) is not yet recommended, as there are quite a few APARs in that area, still for the next fixpack. I would want to control it at the SVRCONN end of the channel and set the value to 1.

The OP states he is using a V6.0.2.5 client, he did not say whether he was connecting to a V6 or V7 server...
The other possibility, I'm thinking of, would be poor connectivity and renegotiating the SSL protocol too often... Of course during SSL negotiation the Channel's stream would be blocked and waiting....
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mqjeff
PostPosted: Tue Feb 22, 2011 8:51 am    Post subject: Reply with quote

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Joined: 25 Jun 2008
Posts: 17447

fjb_saper wrote:
The OP states he is using a V6.0.2.5 client,


Okay... I guess I missed that....

SHARECNV doesn't apply then.
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fjb_saper
PostPosted: Tue Feb 22, 2011 8:57 am    Post subject: Reply with quote

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Joined: 18 Nov 2003
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Last but not least the OP should check his use of the connection.
If he tries to use a connection locked by a getwait... i.e. receive(long) I would not expect him to be able to use the same connection for a put i.e. send()
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imeh
PostPosted: Tue Feb 22, 2011 9:52 pm    Post subject: Reply with quote

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Joined: 21 Feb 2011
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We are connecting to V6 server.

Is it that every time every request is negotiating with the channel for SSL protocol, all the threads working on the channel might get blocked?
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fjb_saper
PostPosted: Wed Feb 23, 2011 6:18 am    Post subject: Reply with quote

Grand High Poobah

Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY

fjb_saper wrote:
Last but not least the OP should check his use of the connection.
If he tries to use a connection locked by a getwait... i.e. receive(long) I would not expect him to be able to use the same connection for a put i.e. send()

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