stmt.execute(sql);
SQLWarning wrn = stmt.getWarnings();
 while  (wrn!= null ) {
     System.out.println("Thread " + threadNumber + ". SQLState= "+wrn.getSQLState()+", SQLWarning: " + wrn.getMessage());
}
 while  (readNext) {
      boolean  moreResults = stmt.getMoreResults();
      if  (moreResults) {
          ResultSet rs = stmt.getResultSet();
           while  (rs.next());
     }
      int  updateCount = stmt.getUpdateCount();
      if  (!moreResults && updateCount==- 1 ) {
          readNext=false;
     }
}
stmt.close();