Select statement not returning correct data

Question

I'm working on an application and I'm having a weird problem. The application connects to an Oracle database, pulls out some data, and does something with it. In the process of testing I've already read and dealt with some rows. On those rows the UPDATE_FLAG field was changed to a N so they wouldn't be selected again.
I do want to select those rows again, so with SQLPlus I changed the UPDATE_FLAG back to Y. Now here's the strange part. The same select statement run from SQLPlus is returning thoe row I modified, but my application does not.
Here's the select statement:
SELECT * FROM MY_TABLE WHERE UPDATE_FLAG = 'Y' and USER_ID like 'B%';
When I run this I get a row back called Brian.
In my application I do this:
try
               Class.forName("oracle.jdbc.driver.OracleDriver");               
               Connection conn = DriverManager.getConnection("jdbc:oracle:thin:@server:port:sid", "username", "password");
               Statement st = conn.createStatement();
               ResultSet rec = st.executeQuery("SELECT * FROM MY_TABLE WHERE UPDATE_FLAG = 'Y' and USER_ID like 'B%'");
               System.out.println("SELECT * FROM MY_TABLE WHERE UPDATE_FLAG = 'Y' and USER_ID like 'B%'");
               while(rec.next())
                    System.out.println(rec.getString("USER_ID"));
               st.close();
          } catch (Exception e)
               System.out.println("Error -- " + e.toString());
               e.printStackTrace();
            }When this runs it doesn't return Brian and there are no exceptions caught. It's like it does not find it.
Assuming I explained this well enough, anyone have any ideas what the problem could be?
Thanks,
James

Answer 1

I do want to select those rows again, so with SQLPlus I changed the UPDATE_FLAG back to Y. Last time I ran SQLPlus I explicitly had to do a commit after modifications, because it was creating a transaction around the sqlplus session. Of course running a query in that session would work on the modified data rather than the actual data.