Re: slow jdbc postgres connection

hi,

just to be sure that it cannot be the intranet-connection i tried to run my java test database application directly on the server. mysql-jdbc answered within 20ms pgsql-jdbc needed 5494ms and i have no idea why?

any advices would be appreciated.

regards. stefan
> hi i have the following problem:
>
> when i execute the following query via pgAdminIII i get a result within 31ms
>
> Select version()
> result: PostgreSQL 8.1
>
> if try to execute the same query using the jdbc-interface from a java-application the same query needs horrible 4756ms.
> my jdbc driver is 8.1-409 JDBC 3
> my postgres version is 8.1.8
> my JRE-Version: 1.5.0_07
>
> Connection pgconnection = null;
>
> // Load the pgSQL JDBC driver
> String pgdriverName = "org.postgresql.Driver";
> Class.forName(pgdriverName);
>
> // Create a connection to the "test" database
> String pgserverName = "10.100.6.245";
> String pgdatabase = "test";
> String url = "jdbc:postgresql://" + pgserverName + "/" + pgdatabase + "?characterEncoding=UTF8&useUnicode=true";
> String username = "user";
> String password = "password";
>
> pgconnection = DriverManager.getConnection(url, username, password);
>
> ResultSet pgresultSet;
> Statement pgstatement;
> pgstatement = pgconnection.createStatement();
>
> String pgquery;
> pgquery="SELECT version()";
>
>
> long start=System.currentTimeMillis();//start time measurement
>
> pgresultSet = pgstatement.executeQuery(pgquery);
>
> long time=System.currentTimeMillis()-start;//end time measurement
>
> //time =4756ms
>
> pgconnection.close();
>
>
> if i do the similar query on our mysql database, which is on the same local server, i get quick results, so the reason probably cannot be a slow intranet-connection
>
>
> any help would be appriciated.
>
>
> regards. stefan
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