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From Fredrik Jonson <>
Subject Re: Change the MDB instance limit
Date Mon, 06 Apr 2009 15:18:34 GMT
Hi again,

Here's some additional info. First, the InstanceLimit configuration change
I mentioned in the original mail was to change config.xml and replace:

  <module name="org.apache.geronimo.configs/j2ee-server/2.1.4/car"/>


  <module name="org.apache.geronimo.configs/j2ee-server/2.1.4/car">
    <gbean name="org.apache.geronimo.configs/j2ee-server/2.1.4/car?
      <attribute name="systemProperties">
        Default\ MDB\ Container.InstanceLimit=50</attribute>

As mentioned the above does nothing. After changing config.xml I still
get the "Only 10 instances..." exception.

Secondly, I have worked out a b*tt ugly brute force hack that actually solves
the problem. Nothing for the faint of heart, but here we go:

 1. Dive into $GERONIMO_HOME/repository/org/apache/openejb/openejb-core/3.0.1

 2. Unpack the file below from openejb-core-3.0.1.jar (unzip...)

 3. Edit it and change InstanceLimit from 10 to 0 (unlimited). The parameter
    is only specified in one place so it is easy to find. 

 4. Update the openejb-core-3.0.1.jar (zip -u ...) replacing the original
    service.xml files with the edited one.

 5. Restart G.

Obviously I really hope someone can help and put the above hack out of it's
misery and guide me back on the path of proper G configuration. Thanks!

Fredrik Jonson

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