Hi almut,

Thanks again for your reply on this. To explain properly...below is what happening:

Actually it supposed to do 1.redirect to test.html 2.execute the function call in chile thread 3. Write down the final result to a tmp file 4. rename the tmp file to test.html

Instead of this it's behaving like 1.*Not* redirecting to test.html 2.executing the function call successfully. 3.creating and writing the final result to tmop file properly 4.*Not renaming* the tmp file and after some time getting expired.

any clue what I am doping wrong again?Thanks