About connecting to a database

Hello everybody,

I have the following problem. When I execute my application to query a
PostgresSQL database, the PGsetdb function gives me the following error:

FATAL: PQsetdb: Unable to determine a Postgres username!

and the application can't connect to the database.


Could anyone say me what the reason can be ? Thanks in advance !!

Regards,

    Mariano

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 Mariano Herrero                   office: F2.315
 University of  Paderborn          voice:  +49 5251 60-6693
 Dept. of Computer Science         fax:    +49 5251 60-6697
 Fuerstenallee 11                  mailto:mariano@uni-paderborn.de
 33102 Paderborn, Germany

 http://www.uni-paderborn.de/fachbereich/AG/monien/PERSONAL/MARIANO/
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