Error creating Oracle DataSource on WebLogic 10.3x

I'm unable to create a DataSource on WebLogic 10.3.

When Cargo tries to create the DataSource I get an ORA-01005 error. Even so, the DataSource seems to be created when I check on the WebLogic admin console, but it's not working, as it does not use a password (even if I tell Cargo to so, as you can see in the attached pom.xml).

Here is the error:

[INFO] [talledLocalContainer] <08-jun-2009 22H30' CEST> <Warning> <JDBC> <BEA-001129> <Received exception while creating connectio
n for pool "w13DataSource": ORA-01005: null password given; logon denied
[INFO] [talledLocalContainer] >
[INFO] [talledLocalContainer] <08-jun-2009 22H30' CEST> <Error> <Deployer> <BEA-149205> <Failed to initialize the application 'w13
DataSource' due to error weblogic.application.ModuleException: .
[INFO] [talledLocalContainer] weblogic.application.ModuleException:
[INFO] [talledLocalContainer] at weblogic.jdbc.module.JDBCModule.prepare(JDBCModule.java:289)
[INFO] [talledLocalContainer] at weblogic.application.internal.flow.ModuleListenerInvoker.prepare(ModuleListenerInvoker.java:93)

[INFO] [talledLocalContainer] at weblogic.application.internal.flow.DeploymentCallbackFlow$1.next(DeploymentCallbackFlow.java:38
7)
[INFO] [talledLocalContainer] at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:37)
[INFO] [talledLocalContainer] at weblogic.application.internal.flow.DeploymentCallbackFlow.prepare(DeploymentCallbackFlow.java:5
8)
[INFO] [talledLocalContainer] Truncated. see log file for complete stacktrace
[INFO] [talledLocalContainer] weblogic.common.ResourceException: weblogic.common.ResourceException: Could not create pool connecti
on. The DBMS driver exception was: ORA-01005: null password given; logon denied
[INFO] [talledLocalContainer]
[INFO] [talledLocalContainer] at weblogic.jdbc.common.internal.ConnectionEnvFactory.createResource(ConnectionEnvFactory.java:253
)
[INFO] [talledLocalContainer] at weblogic.common.resourcepool.ResourcePoolImpl.makeResources(ResourcePoolImpl.java:1109)
[INFO] [talledLocalContainer] at weblogic.common.resourcepool.ResourcePoolImpl.makeResources(ResourcePoolImpl.java:1033)
[INFO] [talledLocalContainer] at weblogic.common.resourcepool.ResourcePoolImpl.start(ResourcePoolImpl.java:214)
[INFO] [talledLocalContainer] at weblogic.jdbc.common.internal.ConnectionPool.doStart(ConnectionPool.java:1051)
[INFO] [talledLocalContainer] Truncated. see log file for complete stacktrace