I am running the following application:

// You need to import the java.sql package to use JDBC
import java.sql.*;

class Employee
{
  public static void main (String args [])
       throws SQLException, ClassNotFoundException
  {
    // Load the Oracle JDBC driver
    Class.forName ("sun.jdbc.odbc.JdbcOdbcDriver");

    // Connect to the database
    // You must put a database name after the @ sign in the connection URL.
    // You can use either the fully specified SQL*net syntax or a short cut
    // syntax as <host>:<port>:<sid>. The example uses the short cut syntax.

    String driverURL = "jdbc:odbc:az1";
    if(args.length > 0)
        driverURL = args[0];

    DriverManager.setLogStream(System.out);
    Connection conn =
      DriverManager.getConnection (driverURL, "ajay", "ajay09");

    // Create a Statement
    Statement stmt = conn.createStatement ();

    // Select the ENAME column from the EMP table
    // ResultSet rset = stmt.executeQuery ("select ENAME from EMP");

    // Iterate through the result and print the employee names
    // while (rset.next ())
      // System.out.println (rset.getString (1));

    conn.close();

  }
}


in JDK 1.1.5, using Intersolv's data direct ODBC drivers.

The ODBC drivers can be found at /net/greatlakes.central/export/home/avohra/odbc.

When I run the above application, I get a java core dump.
The core dump and truss output can be found in
/net/greatlakes.central/export/home/avohra/java-core.

I have submitted a bug against the ODBC driver as well, but
I can't be sure if it is a ODBC driver bug, or a Java bug.

I can't get hold of type 4 JDBC drivers for Informix, hence I am forced
to consider using JDBC-ODBC bridge. I am testing this bridge
on Oracle, later to be used on Informix at an ISV site.