Enabling DFF with the value set

Step 1:

Navigate to System AdministratoràApplicationàvalidationàset to create a new value set  name called "TEST_DFF"

Step 2: 

Navigate to  System AdministratoràApplicationàFlexfieldàDescriptiveàSegments

Uncheck Freeze Flexfield Definition to add value set name under Context Filed values  and title is Flexfield Segment values

Under segments add DFF fields(Attribute1,Attribute2,Attribute3) 

Note : if we want we can  add upto 50 Attributes

Check Freeze Flexfield Definition and then compile the flex field definition

Step 3:

Check the DFF fields under the below navigation

Navigate to System AdministratoràApplicationàvalidationàvalues

DFF fields will come under values,Effective as shown below:

 Get the values from database.

SELECT ffv.flex_value, attribute1 AS "Host Name", attribute2 AS "User Name",
       attribute3 AS "Password"
  FROM apps.fnd_flex_value_sets ffvs, apps.fnd_flex_values ffv
 WHERE ffvs.flex_value_set_id = ffv.flex_value_set_id
   AND ffv.enabled_flag = 'Y'
   AND ffvs.flex_value_set_name = 'TEST_DFF'