How to limit the number of instances of an MDB?

Hi,
I am using jboss 4.0.5 AS, and we have an mdb which listens to the jboss's jms queue. We are using ejb 3.
we are configuring MDB like this
@MessageDriven(name="LongProcessMessageBean", activationConfig = {
@ActivationConfigProperty(propertyName="destinationType", propertyValue="javax.jms.Queue"),
@ActivationConfigProperty(propertyName="destination", propertyValue="queue/examples/OurSampleQueue")
@ActivationConfigProperty(propertyName="maxSession", propertyValue="1")
When there are multiple messages to the queue at the same time, it is creating multiple instances of the MDB, i want to limit the MDB instances to 1 ( I used maxSession=1, but it is not working).
When the messages to the JMS queue are increasing, after certain point it is saying that the unable to allocate memory....threadpool is full.
any suggestion would be appreciated............
thanks.

Hmmmm... I found the cause of the problem. The onMessage() method of the MDB is using some DB backend. This backend was catching an exception and continuing normally, but for some reason, the MDB executed six more times. Something like

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Limit the number of instances

Hello all,
I have been reading a lot of articles on the internet the last days on how to limit the number of instances for an asynchronous ftp process. I connect to an FTP every hour and transfer all the .xml file that are available. After FTP there is some more processing that has to be done.
For the moment when the customer uploads 20 files to his FTP, 20 instances of the same process are started. I want to limit this number to 5. I have been playing with all the possible parameters found on the internet and have been applying all the rules (like sum of workerbean and invokerbean ... sum of dspMaxThreads of all domains), but none of them worked !
I have put this process out of my production environment for the moment until I know how to control the number of instances.
The version I'm using is 10.1.3.3.0
If I don't get this solved I will be upgrading to 10.1.3.5 but I have no guarantee that the upgrade will do the trick ....
Home someone can help ...
Thanks,
Best regards,
Tom.

Hmmmm... I found the cause of the problem. The onMessage() method of the MDB is using some DB backend. This backend was catching an exception and continuing normally, but for some reason, the MDB executed six more times. Something like

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ZA
zzzSharePoint

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Hi,
I am using a Flex3 List control for one of my projects.
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How to limit the number of items that a list control can hold / can be dropped in a list control ?
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1. Listen for the dragdrop event on the control you are dragging onto.
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Thank you Steeve
But my problem is that i don't know which boxes the client will want to tick so all boxes have to be available at the beginning.
When the client will have ticked 5 boxes in this case and only in this case, all others boxes must become unavailable so it is very difficult to set up
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Date: Fri, 15 May 2009 09:44:33 -0600
From: [email protected]
To: [email protected]
Subject: How to limit the number of boxes to tick in LC
This is a form validation issue. For example, you may have a text field and the value entered into that field determines which checkboxes must be completed to satisfy a validation or business rule. The attached sample requests the value "foobar" to be entered into a text field. If you enter "foobar" and exit the field, 2 of 3 checkboxes have the access property changed to "protected", meaning a user cannot no longer select those checkboxes.
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>

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Hello All,
I am running an oracle text search which returned the following error to my java program.
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DRG-51030: wildcard query expansion resulted in too many terms
#### ORA-29902: Fehler bei der AusfÃ¼hrung von Routine ODCIIndexStart()
ORA-20000: Oracle Text error:
DRG-51030: wildcard query expansion resulted in too many terms
java.sql.SQLException: ORA-29902: Fehler bei der AusfÃ¼hrung von Routine ODCIIndexStart()
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Also remember that full terms do not need a wildcard. Search for "car %" is not necessary and will give you the error you mentioned. A search for "car" will yield the results you need even if it is only part of a bigger sentence because everything is based on the token. You may already know all of this, but without an example query I figured I'd mention it to be sure.
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suppose at any point of time, if i would like to have 5 instances at the maximum, how can i disable the further requests?
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write a factory method that controls the number of instances for you:
import java.util.List;
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DB version : 11.2.0.3
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Hi,
According your post, I know you would like to set the item display limit in Status List web part.
In the web part, the number of items to display is based on the view which you selected when configuring the web part. The default view for status list is status list view.
However, I am not able to limit the items’ display number of the status list view. After changing the items limit, the list item displayed would not match the number specified by Item Limit. Thus, it is not possible to limit the number
of items in the Status list web part.
It could be a potential issue in SharePoint 2010.
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Appreciate your time and efforts.
Thanks.
Tracy Cai
TechNet Community Support

How to limit the number of instances of an MDB?

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