@Test
 public void testCreateSequence() {
   try {
     dbUtils.createSequence("TEST_SEQ1", 0); // $NON-NLS-1$
     dbUtils.dropSequence("TEST_SEQ1"); // $NON-NLS-1$
   } catch (SQLException e) {
     assertTrue(e.getMessage(), false);
     e.printStackTrace();
   }
 }
 @Test
 public void testExistSequence() {
   try {
     dbUtils.dropSequence("TEST_SEQ3"); // $NON-NLS-1$
     boolean value = dbUtils.existSequence("TEST_SEQ3"); // $NON-NLS-1$
     assertEquals(false, value);
     dbUtils.createSequence("TEST_SEQ3", 0); // $NON-NLS-1$
     value = dbUtils.existSequence("TEST_SEQ3"); // $NON-NLS-1$
     assertEquals(true, value);
   } catch (SQLException e) {
     assertTrue(e.getMessage(), false);
     e.printStackTrace();
   }
 }