File is inconsistent due to a failed media recovery session
此数据文件上的先前介质恢复尝试失败或被取消，使文件处于不一致状态。必须完成恢复或重新恢复文件。
SELECT file#, error, change#, time FROM v$recover_file;SELECT file#, name, status FROM v$datafile;-- RMAN> RESTORE DATAFILE N; RECOVER DATAFILE N;