On Wed, Jul 24, 2013 at 11:15 AM, Sachit Adhikari
<sachit.technerves@gmail.com> wrote:
> Yes, but unfortunately that didn't work too. I have already tried the
> solution you provided. I could edit the tags and annotations but it won't
> change the file name in my file system. The file is still named as
> "dataset_43649.dat".

You *cannot* rename the file on disk (without bypassing Galaxy
and editing the database and renaming the file directly). This is
by design - unless you are an administrator debugging something
or a tool author you don't need to know the actual filename on disk.

You *can* rename the description of the file as shown within the
Galaxy interface (via edit attributes).

Peter