It is not possible to fetch data using a multithreaded application to connect via Intersolv ODBC Driver v2.11 to a DBF data file. The problem occurs only with 1.1.6 Production Pre-Release on Solaris 2.6 (native_thread) with or without jit enabled (-Djava.compiler=NONE). No problems using green_threads (Reference Implementation) on Solaris 2.6
See the following example:
 
import java.sql.*;

import java.util.*;
import java.lang.System;
import java.net.*;

public class Test1
{
    public static void main(String args[])
    {
    TestRun1 pp = new TestRun1();
    pp.start();
    }
  }
   
  
  class TestRun1 extends Thread
 {
 public TestRun1()
 {}
 
 public void run()
 {
    String driver = null;
    String dbInfo = null;
    String user=new String("test");
    String passwd=new String("test");
   
    DriverManager.setLogStream(System.out);
 
    driver="sun.jdbc.odbc.JdbcOdbcDriver";
    dbInfo=new String("jdbc:odbc:demo");
  
    try{
    Class.forName(driver);
    }
    catch(Exception exc){exc.printStackTrace();}
    Connection conn=null;
 
    try{
    System.out.println("trying....." + dbInfo);
    conn=DriverManager.getConnection(dbInfo,user,passwd);
    }catch(Exception exc){exc.printStackTrace();}
    if(conn!=null) System.out.println("Connection opened");
    else System.out.println("Error Connection not opened");
    
    Enumeration ss = DriverManager.getDrivers();
    while(ss.hasMoreElements())
    System.out.println(ss.nextElement());
    }
 }


This is the error generated:

Fetching (SQLFetch), hStmt=1431136
RETCODE = -1
ERROR - Generating SQLException...
SQLException: SQLState(S1000) vendor code(30041)
java.sql.SQLException: [INTERSOLV][ODBC dBase driver]Error on input or output to a file.Error 0 Additional Information QEODBC.LIC.
at java.lang.Throwable.<init>(Compiled Code)
at java.lang.Exception.<init>(Compiled Code)
at java.sql.SQLException.<init>(Compiled Code)
at sun.jdbc.odbc.JdbcOdbc.createSQLException(Compiled Code)
at sun.jdbc.odbc.JdbcOdbc.standardError(Compiled Code)
at sun.jdbc.odbc.JdbcOdbc.SQLFetch(Compiled Code)
at sun.jdbc.odbc.JdbcOdbcResultSet.next(Compiled Code)
at sun.jdbc.odbc.JdbcOdbcConnection.buildTypeInfo(Compiled Code)
at sun.jdbc.odbc.JdbcOdbcConnection.initialize(Compiled Code)