Use Date Format (-d) to specify the format used to display dates in an application using a three-character string of the letters: d, m, and y in any order. This startup parameter provides the same functionality as the SESSION:DATE-FORMAT attribute..

Operating system and syntax UNIX / Windows -d dateform
Use with Maximum value Minimum value Single-user default Multi-user default
Client Session — — mdy mdy
dateform

The format used to display dates in an application.

Note:
  • The -d sets the display format not the storage format. The storage format is fixed.
  • The date constants entered in procedures, or as initial values in the Data Dictionary, are always specified in month/day/year format.