Hello Mahesh,
The log you attached have :
Dumping environment at 2013/04/20 11:45:29
PATH=/usr/bin:/etc:/usr/sbin:/usr/ucb:/usr/dt/bin:/usr/bin/X11:/sbin:/usr/java14_64/jre/bin:/usr/java14_64/bin
So I am not sure if it is picked correctly. What is the value of the PATH variable on the command prompt from where you started the upgrade???
Possible causes of this error could be :
1. Access/Permission issues on the directory or file.
2. Environmental variables
Please check it.
Regards,
Gaurav