Connection could not be allocated because: User id length (0) is outside the range of 1 to 255

Question

I\'m creating a login interface using Netbeans with JSF, EJB and JPA. When I try to deploy the project, it throws the below exception:

Internal Exception: ja         


        

Answer 1

Often the problem occurs due to an empty string as password, so to solve that you've to mention a '()' in the value attribute of the password, for example if the user is APP and there is no password set, the config would be: