Hi all, I'm having trouble opening a database connection to a test database on a fresh PostGreSQL 7.1.3 installation on RedHat 7.1 from the RPMs. I have a simple test class TestPostGreSQL that opens a connection, queries for all the rows in a table and prints the results to standard output. The driver file is in the same directory as the java class, which I execute using java -classpath .:jdbc7.1-1.2.jar TestPostGreSQL I get the following error message: Something unusual has occured to cause the driver to fail. Please report this exception: Exception: java.lang.NullPointerException Stack Trace: java.lang.NullPointerException at org.postgresql.Connection.openConnection(Connection.java:148) at org.postgresql.Driver.connect(Driver.java:122) at java.sql.DriverManager.getConnection(DriverManager.java:517) at java.sql.DriverManager.getConnection(DriverManager.java:177) at TestPostGreSQL.main(TestPostGreSQL.java:17) End of Stack Trace I created the database using createdb testdb and from psql created the table as create table Person ( FirstName char(30) not null, LastName char(30) not null); then created the user and password and granted all permissions on the Person table. I start the server with postmaster -i to get TCP/IP support. The code for the test class is at the end of this message. Note that everything is commented out except for loading the driver and opening a connection. I have used JDBC successfully for months with Microsoft SQL Server, but I'm anxious to switch over to PostGreSQL! Thanks in advance for any help! Larry Rogers ***************************** import java.sql.*; import java.util.Date; public class TestPostGreSQL { public static void main(String[] args) { final String driver = "org.postgresql.Driver"; final String url = "jdbc:postgresql://localhost:5432?database=testdb"; final String login = "TestUser"; final String password = "TestPass"; String sql = "SELECT * FROM Person"; try { Class.forName(driver); Connection connection = DriverManager.getConnection(url, login, password); /* Statement statement = connection.createStatement(); ResultSet result = statement.executeQuery(sql); while (result.next()) { System.out.println(result.getString("FirstName") + " " + result.getString("LastName")); } result.close(); statement.close(); */ connection.close(); } catch(SQLException e) { System.out.println(e); } catch(ClassNotFoundException e) { System.out.println(e); } } } ---------------------------(end of broadcast)--------------------------- TIP 6: Have you searched our list archives? http://www.postgresql.org/search.mpl