In the left pane of the Admin Console, open the Application Server instance for the JNDI configuration to be modified.
Open JNDI and select External Resources.
If any external resources have been created already, they are listed in the right pane.
To edit an external resource, click on the file name in the right pane.
Edit the Resource Type field, the JNDI Lookup field, the Factory Class field, or the Description field.
Mark the External Resource Enabled checkbox, to enable the external resource.
Click Save to save the changes to the external resource.