Hi Vineet, there is already a utility that does this. (Refer to Case 12706).

See script in figure below:

Figure 1 - Data Randomize Script
EXEC LT_SAA_UTILITY_RandomizeData
    @Username = ''
      ,@Password = ''

1. The change will be available in version: 15.70

2. The following changes were made (Include Database object names, Program classes, and any other relevant information):

1. Added parameter so we can recognize some data for the purpose of Diagnostics.
2. See figure 1 below for Ful Randomize.
3. Figure 2 does the same except it does not randomize "FIRST Names" and Company name so we can perform diagnostics with some data recognition.

3. Affected Areas:

1. Existing Utility

4. The issue was caused by:

1. Improvement

5. Other Relevant Notes: 
6. Next Step (Review and System Test (Developer) -> UAT (Quality) -> Documentation): Closure

Figure 1 - Randomise data Including FirstName

EXEC LT_SAA_UTILITY_RandomizeData

    @Username = ''

   ,@Password = ''

   ,@RandomiseName = 0

Figure 2 - Randomise data Excluding FirstName

EXEC LT_SAA_UTILITY_RandomizeData

    @Username = ''

   ,@Password = ''

   ,@RandomiseName = 1