I found that when the following is set in the standalone.xml of JBoss-7.1.1.Final, it will have a fatal error:

<xa-datasource....>
....
<xa-datasource-property name="ConnectionProperties">SetBigStringTryClob=true</xa-datasource-property>
....
</xa-datasource>

The error is:

Caused by: javax.resource.ResourceException: No property editor found for type: class java.util.Properties
at org.jboss.jca.adapters.jdbc.xa.XAManagedConnectionFactory.getXADataSource(XAManagedConnectionFactory.java:601)
at org.jboss.jca.adapters.jdbc.xa.XAManagedConnectionFactory.getXAManagedConnection(XAManagedConnectionFactory.java:430)

When I don't define the SetBigStringTryClob setting, all is fine. However, the SetBigStringTryClob is really important for the application to work correctly. Hope there's at least a workaround.

This worked without problems in JBoss 4.2.3.