Oracle_报错_ORA

SQL> select TO_DATE('29-MAR-2007 20:14:33','DD-MON-YYYY HH24:MI:SS') from dual;
select TO_DATE('29-MAR-2007 20:14:33','DD-MON-YYYY HH24:MI:SS') from dual
ORA-01843: 无效的月份

SQL> alter session set nls_date_language='american'     --以英语显示日期
  2  ;
Session altered

SQL> alter session set NLS_DATE_FORMAT='DD-MON-YY'; 
Session altered