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PO"No suitable driver" problem with Hibernate3, PostgreSQL 8.3 and Java 5
 

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  1. PO"No suitable driver" problem with Hibernate3, PostgreSQL 8.3 and Java 5
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    <p>Does anybody know what's going on here:</p> <p>I run hibernate 3.2.6 against a PostgreSQL 8.3 (installed via fink) database on my Mac OS X. The setup works fine when I use Java 6 and the JDBC 4 driver (postgresql-8.3-603.jdbc4). However, I need this stuff to work with Java 5 and (hence) JDBC 3 (postgresql-8.3-603.jdbc3). When I change the jar in the classpath and switch to Java 5 (I do this in eclipse), I get the following error:</p> <pre><code>Exception in thread "main" org.hibernate.exception.JDBCConnectionException: Cannot open connection at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:74) &lt;Rows clipped for readability&gt; Caused by: java.sql.SQLException: No suitable driver at java.sql.DriverManager.getConnection(DriverManager.java:545) at java.sql.DriverManager.getConnection(DriverManager.java:140) at org.hibernate.connection.DriverManagerConnectionProvider.getConnection(DriverManagerConnectionProvider.java:110) at org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:423) </code></pre> <p>What's the problem here? I cannot see it. Here is my hibernate configuration:</p> <pre><code>&lt;hibernate-configuration&gt; &lt;session-factory&gt; &lt;property name="connection.url"&gt;jdbc:postgresql:test&lt;/property&gt; &lt;property name="connection.username"&gt;postgres&lt;/property&gt; &lt;property name="connection.password"&gt;p&lt;/property&gt; &lt;property name="connection.pool_size"&gt;1&lt;/property&gt; &lt;property name="dialect"&gt;org.hibernate.dialect.PostgreSQLDialect&lt;/property&gt; &lt;property name="current_session_context_class"&gt;thread&lt;/property&gt; &lt;property name="show_sql"&gt;true&lt;/property&gt; &lt;mapping resource="com/mydomain/MyClass.hbm.xml"/&gt; &lt;/session-factory&gt; &lt;/hibernate-configuration&gt; </code></pre> <p><strong>EDIT:</strong> The longer, more usual form of the connection URL: <em>jdbc:postgresql://localhost/test</em> has the exact same behaviour.</p> <p>The driver jar is definitely in the classpath, and I also do not manage to get any errors with this direct JDBC test code:</p> <pre><code>public static void main(String[] args) throws Exception { Class.forName("org.postgresql.Driver"); Connection con=DriverManager.getConnection("jdbc:postgresql://localhost/test","postgres", "p"); } </code></pre>
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