ORA-01815
        BC/AD conflicts with use of B.C./A.D.
        
        
        Cause
        Both types of BC/AD indicators were listed in a date specification. If one of the BC/AD indicator format masks, such as BC or B.C., was specified in the date, the other may not be specified.
        Action
        Use one BC/AD indicator format, with or without periods, consistently.
        
     
    
    
        ORA-01815
        BC/AD conflicts with use of B.C./A.D.
        
        
        Cause
        Both types of BC/AD indicators were listed in a date specification. If one of the BC/AD indicator format masks, such as BC or B.C., was specified in the date, the other may not be specified.
        Action
        Use one BC/AD indicator format, with or without periods, consistently.
        
     
    
    
        ORA-01815
        BC/AD conflicts with use of B.C./A.D.
        
        
        Cause
        Both types of BC/AD indicators were listed in a date specification. If one of the BC/AD indicator format masks, such as BC or B.C., was specified in the date, the other may not be specified.
        Action
        Use one BC/AD indicator format, with or without periods, consistently.