解决方法
您可以随时尝试：
sql> select to_timestamp( '9999-12-31 23:59:59','yyyy-mm-dd hh24:mi:ss' ) from dual; TO_TIMESTAMP('9999-12-3123:59:59','YYYY-MM-DDHH24:MI:SS') --------------------------------------------------------------------------- 31-DEC-99 11.59.59.000000000 PM
和：
sql> select to_timestamp( '9999-12-31 23:59:59','yyyy-mm-dd hh24:mi:ss' )+1 from dual; select to_timestamp( '9999-12-31 23:59:59','yyyy-mm-dd hh24:mi:ss' )+1 from dual * ERROR at line 1: ORA-01841: (full) year must be between -4713 and +9999,and not be 0
