FIXED_DATE

Parameter type	String
Syntax	FIXED_DATE = YYYY-MM-DD-HH24:MI:SS (or the default Oracle date format)
Default value	There is no default value.
Parameter class	Dynamic: ALTER SYSTEM

FIXED_DATE enables you to set a constant date that SYSDATE will always return instead of the current date. This parameter is useful primarily for testing. The value can be in the format shown above or in the default Oracle date format, without a time.

Specify the value either without quotation marks or with double quotation marks.