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I can create a connection to the database in qgis and the test connection is successful. However when I actually connect to the database to export shape files I get the following error:

the connection is failed, check the configuration.

Thanks, Paulo Pra├ža

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can you import the vector to qgis layout? –  nickves Apr 17 '13 at 11:30
    
Do you see any error/ more information in Postgresql's logs? –  Devdatta Tengshe Apr 17 '13 at 11:50
    
Yes I can Import vector to qgis layout. –  Paulo Praca Apr 17 '13 at 12:54
    
I'm new (2 days) on Postgresql, but i can connect without problems the database with pgAdimin III. I have edit the pg_hba.conf and put this line: host all all 0.0.0.0/0 md5. –  Paulo Praca Apr 17 '13 at 12:59
    
If I test connection I get this:Conexão com PG:dbname='Teste_03' host='localhost' port='5432' user='postgres' password='pp2198' foi completada If I try to connect I get this get This:PG:dbname='Teste_03' host='localhost' port='5432' user='postgres' password='pp2198' não é uma fonte de dados reconhecida –  Paulo Praca Apr 17 '13 at 13:03

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