"Kakoli Sen" <kakolis(at)cdacb(dot)ernet(dot)in> writes:
> I install PostgreSQL 7.3.21 successfully with sudo and could start
> the postmaster as sudo.
What platform is that? How exactly did you install Postgres --- build
from source, install someone's package (whose?), ...?
Why are you intent on making a fresh installation of 7.3.x anyway?
Seems like it'd be better to take the opportunity to move to a
non-obsolete release.
regards, tom lane