Can't call rollback when autocommit=true

[danwin]

Hello,

I always get warning

2010-08-27 10:28:24,688 WARN  [org.jboss.resource.connectionmanager.TxConnectionManager] (http-127.0.0.1-8080-1) Connection error occured: ... 
MySQLNonTransientConnectionException: Can't call rollback when autocommit=true ...

together with warning

2010-08-27 10:05:31,073 WARN  [org.jboss.resource.connectionmanager.TxConnectionManager] (http-127.0.0.1-8080-1) 
Error during tidyup org.jboss.resource.connectionmanager.TxConnectionManager ...

.

Although I have switched autocommit off at persistence.xml

<?xml version="1.0" encoding="UTF-8"?>
<persistence version="1.0"
    xmlns="http://java.sun.com/xml/ns/persistence">
    <persistence-unit name="Employee-Details">

        <jta-data-source>java:/jdbc/employee</jta-data-source>
        <class>employee.EmployeeEntity</class>

        <properties>
            
            <property name="hibernate.dialect" value="org.hibernate.dialect.HSQLDialect" />
            <property name="hibernate.show_sql" value="true" />
            <property name="hibernate.format_sql" value="true" />    
            
            <property name="hibernate.connection.release_mode" value="after_statement" />
            <property name="hibernate.connection.autocommit" value="false" />
            
        </properties>
    </persistence-unit>
</persistence>

and datasource file:

<?xml version="1.0" encoding="UTF-8"?>
<!-- JBoss Server DataSource -->
<datasources>
    <local-tx-datasource>
        <jndi-name>jdbc/employee</jndi-name>
        
        <connection-url>jdbc:mysql://localhost/employee</connection-url>
        <driver-class>com.mysql.jdbc.Driver</driver-class>
        <user-name>root</user-name>
        <password>root</password>

        <connection-property name="autoCommit">false</connection-property>
        <connection-property name="release_mode">after_statement</connection-property>
        
        <exception-sorter-class-name>org.jboss.resource.adapter.jdbc.vendor.MySQLExceptionSorter</exception-sorter-class-name>
        <metadata>
            <type-mapping>mySQL</type-mapping>
        </metadata>

   </local-tx-datasource>
</datasources>

Why JBOSS is still complaining? Where else I can configure autocommit?

Daniel