WebLogic ERROR: No credential mapper entry found for password indirection

To solve this error follow the steps bellow..

1. Disable following flag form JDev -> application property -> deployment

Uncheck "Auto Generate and Synchronize weblogic-jdbc.xml..."

2. Carefully put the jta-data-source name in your persistence.xml.

<jta-data-source>jdbc/hello_ds</jta-data-source>

<properties>
      <property name="eclipselink.target-server" value="WebLogic_10"/>
      <property name="javax.persistence.jtaDataSource"
                value="jdbc/hello_ds"/>
</properties>

Best way to ensure this is by modifying the EAR archive.

3. Create a data source into your server and put the exact JNDI name as your jta-data-source name.