You can get ” ORA-01111: name for data file | ORA-01110: data file | MRP0: Background Media Recovery terminated with error 1111 ” error in you dataguard after adding new datafile to the primary database.   ORA-01111: name for data file | ORA-01110: data file MRP0: Background Media Recovery terminated with error 1111   Details … Continue reading ORA-01111: name for data file | ORA-01110: data file | MRP0: Background Media Recovery terminated with error 1111