Hi ,
Thanks for suggestion. But Problem is a little bit complicated.
As the permission for file is OK. We take this backup Daily. And this kind of problem comes after 40 to 50 days Gap. And every time we get the same error. All other time it completed successfully. So the problem is that we don't know why the Problem repeats after 40 or 50 days. (While the permission for files are OK, No change in password or user's permissions)
With Regards:
Jasvir Singh.