"☆Pumu :-D ☆ " <paricharts@gmail.com> writes:
> I have a fuction that uploading data.
> if DB session time-out has happen while data is uploading,
> I wonder that data in my database have been rollback or not.

You are not very clear about what you mean by "uploading", but in
general a PG backend will never commit a command that it hasn't fully
received from the client.

                       regards, tom lane