How do you obtain the maximum possible date in Oracle?

Question

Is there a function built into Oracle that will return the highest possible date that may be inserted into a date field?

Answer 1

SELECT  TO_DATE('31.12.9999 23:59:59', 'dd.mm.yyyy hh24:mi:ss')
FROM    dual

Note that minimal date is much more simple:

SELECT  TO_DATE(1, 'J')
FROM    dual

Answer 2

I do not know of a function but according to this article:

Oracle 7: from January 1, 4712 BC to December 31, 4712 AD.
Oracle 8: from January 1, 4712 BC to December 31, 9999 AD.
Oracle 9: from January 1, 4712 BC to December 31, 9999 AD.
PL/SQL: from January 1, 4712 BC to December 31, 9999 AD.

Answer 3

From the 11g docs:

Oracle Database can store dates in the Julian era, ranging from January 1, 4712 BCE through December 31, 9999 CE (Common Era, or 'AD').

http://download.oracle.com/docs/cd/B28359_01/server.111/b28318/datatype.htm#i1847

Answer 4

Another ways, just for fun:

SELECT to_date(5373484, 'J')
  FROM dual;

SELECT date '9999-12-31' + (1 - 1/24/60/60) 
  FROM dual;