No.. This is not mentioned in rules and engagement that you have to give points..
But at least you have to close your thread.. If you didn't find sufficient answer, then you can make the discussion as "assume answer"..
As I can see you have written "Thanks a lot prompt replying.. now issue closed.. finally loss all data."
So it seems you have solved your issue...
And it is in rules and engagement The SCN Rules of Engagement | SCN
Read option 8.
Its not for the points, just for other members to find the correct answer.