Hi Shiva,
Your upgrade is failing due to wrong Java environment variable set up
10/27/15 7:15 AM (SetupUtil) J2SDK 1.8 Home Directory [C:\Java\jdk1.7.0_25] :
And it fails
10/27/15 7:19 AM (Echo) C:\V14_3\install-packages\14.1.0\upgrade-repack.14.1.0.431tpexcludes\gateway.xml:24: FAILURE: INCORRECT JAVA VERSION
10/27/15 7:19 AM (Echo) ------------------------------------------------------
10/27/15 7:19 AM (Echo) You are running with Java version 25.40-b25.
10/27/15 7:19 AM (Echo) Niku requires JDK 1.7 (Java 7.0). Please update
10/27/15 7:19 AM (Echo) your JAVA_HOME setting to point to the correct j2sdk
10/27/15 7:19 AM (Echo) directory and try again.
10/27/15 7:19 AM (Echo) --------------------------------
Please correct the Java and then install again.
Regards
Suman Pramanik