J2C Authentication data
The J2C Authentication data entries configure the access to external resources, for example: database, messaging oriented middleware and other J2C adapters.
When the application accesses an external resource, it happens through a J2C adapter. The application doesn't authenticate itself for the external resources by providing an user ID and password. The user ID and password for the J2C adapter is defined under the J2C Authentication data. When the J2C adapter requests a login, it uses a JAAS login module in WebSphere. The login module simply looks up the J2C Authentication data entry from the WebSphere configuration during the login process and uses the retrieved data with the callback methods.
You will find JAAS authentication entries under the Administrative Console at...
Security | Global security | JAAS Configuration | J2C Authentication dataWe can create new entries or remove entries here.