ORA-01815

Error: ORA-01815: BC/AD conflicts with use of B.C./A.D.

Causa: 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., is specified in the date, the other may not be specified.

Acción: Use one BC/AD indicator format, with or without periods, consistently.