EvaluationException + ApplicationPoolException: JBO-30003

With JDeveloper and ADF 10.1.3 I often see the following runtime error in the browser (summary):

javax.faces.FacesException: #{...an expression...}: 
javax.faces.el.EvaluationException:
oracle.jbo.common.ampool.ApplicationPoolException:
JBO-30003: The application pool (...name...)
failed to checkout an application module
due to the following exception:
at ...
Caused by: javax.faces.el.EvaluationException:
oracle.jbo.common.ampool.ApplicationPoolException:
JBO-30003: The application pool (...name...)
failed to checkout an application module
due to the following exception:
at ...
... 26 more
Caused by: oracle.jbo.common.ampool.ApplicationPoolException:
JBO-30003: The application pool (...name...)
failed to checkout an application module
due to the following exception:
at ...
... 27 more
Experience
so far has taught me that this error can have many causes, but they are
all related to problems with the ADF Business Components or the JDBC
Connection / Data Source to access the database.

If
you
encounter such an error, the first thing you should try is run the ADF
BC Tester: right-click your Application Module and choose Test. You
cannot use a Configuration that uses a Data Source, if necessary copy
the existing Configuration and change it to use a straight JDBC
Connection. Then use that Configuration for running the tester (from
the dropdown list in the upper right corner of the tester startup page).

Often
the tester will also give an error, and give you a more meaningful
detail message to indicate the cause of the problem. If the tester
works fine, and you use Data Sources to get to the database, check your
data source definitions.

Comments:

hi, i have a problem with jdeveloper and adf ... i use cvs for control project and now when i test my appmodule i see a ApplicationPoolException .. plz help me, i'm new in adf and jdeveloper user

Posted by saghi on September 12, 2006 at 08:53 PM PDT #

You can ask these questions in the Oracle JDeveloper Discussion Forum or log a Service Request in Oracle MetaLink.

kind regards,

Posted by Sandra Muller on September 12, 2006 at 09:21 PM PDT #

In a similar error that occured to me, the problem was the connection between database and oc4j listener. It seemed that my oc4j server lost the communication with the backend database server and so no connection was available for data retrieval. Oc4j reported the same error. We resolved the issue which was due to a misconfiguration on the firewall and the problem was solved.

Posted by jGaL on November 09, 2006 at 07:27 PM PST #

That's a good addition to the list of possible causes. Thanks!

Posted by Sandra Muller on November 09, 2006 at 10:51 PM PST #

Hi I receive the following oracle.jbo.common.ampool.ApplicationPoolException When viewed the full trace i found the root cause of the exception is : java.lang.NoClassDefFoundError: oracle/sql/CharacterSet I am using JDeveloper 10.1.2 g Please help on how i can solve this issue and mail at Khaledinho@yahoo.com 2Khaledinho@gmail.com

Posted by Khaled Mahmoud on June 18, 2007 at 10:05 PM PDT #

Khaled,

Please post this question on the JDeveloper OTN discussion forum at http://forums.oracle.com/forums/forum.jspa?forumID=83. There you can be helped by more experts.

kind regards,

Posted by Sandra Muller on June 18, 2007 at 10:19 PM PDT #

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