|  
 Parameter type 
 | 
 
 String 
 | 
|  
 Syntax 
 | 
 
 NLS_DATE_FORMAT = "format" 
 | 
|  
 Default value 
 | 
 
 Derived from NLS_TERRITORY 
 | 
|  
 Parameter class 
 | 
 
 Dynamic: ALTER SESSION 
 | 
|  
 Range of values 
 | 
 
 Any valid date format mask but not exceeding a fixed length 
 | 
 
NLS_DATE_FORMAT specifies the default date format to use with the TO_CHAR and TO_DATE functions. The default value of this parameter is determined by NLS_TERRITORY.
 
The value of this parameter can be any valid date format mask, and the value must be surrounded by double quotation marks. For example:
NLS_DATE_FORMAT = "MM/DD/YYYY"