TNS-02506
        Authentication: no type string
        
        
        Cause
        An authentication context structure does not contain a string that describes the authentication service being used.
        Action
        If it is possible, enable tracing and attempt to reproduce the problem. In any event, contact Oracle Customer Support.
        
     
    
    
        TNS-02506
        Authentication: no type string
        
        
        Cause
        An authentication context structure does not contain a string that describes the authentication service being used.
        Action
        If it is possible, enable tracing and attempt to reproduce the problem. In any event, contact Oracle Customer Support.
        
     
    
    
        TNS-02506
        Authentication: no type string
        
        
        Cause
        An authentication context structure does not contain a string that describes the authentication service being used.
        Action
        If it is possible, enable tracing and attempt to reproduce the problem. In any event, contact Oracle Customer Support.