problem with the resultset

[kiran kumar]

Hi, see the bellow code . i am not able to execute updateString() method.

Connection cn;
  Statement stmt;
  ResultSet rs;
       cn = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521","scott","tiger");
      stmt = cn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE);
 rs = stmt.executeQuery("select * from emp");
  rs.absolute(5);
  rs.updateString(2,"ramesh");

In the above statement iam getting some error like
readable resultset can not be updatable
i am using oracle 9i

please reply to the above problem

[edited to disable smilies and add code tags]
[ February 07, 2005: Message edited by: Jeanne Boyarsky ]

[Jeanne Boyarsky]

Sree,
Welcome to JavaRanch!

I'm just curious what you are trying to do here. Is there something significant about the fifth row? It tends to be dangerous to rely on the data returning in a specific order.

The problem might be due to using absolute(). Try the following and see if it still fails:

Connection cn = DriverManager.getConnection(
   "jdbc:oracle:thin:@localhost:1521","scott","tiger");;
Statement stmt = cn.createStatement(
   ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE);;
ResultSet rs = stmt.executeQuery("select * from emp");
 
// if you really want to do this five times
rs.next();
rs.next();
rs.next();
rs.next();
rs.next();
 
rs.updateString(2,"ramesh");

[This time I forgot to disable smilies!]
[ February 07, 2005: Message edited by: Jeanne Boyarsky ]

[Avi Abrami]

Sree,
If you haven't already done so, please refer to the section entitled ResultSet Limitations in Oracle's JDBC User's Guide and Reference. Not all queries can produce updatable "ResultSet"s. As stated in the Oracle documentation, the Oracle JDBC driver will silently convert updatabale "ResultSet"s to read-only "ResultSet"s for such queries.

In your case, it looks like "select * from EMP" cannot produce an updatable "ResultSet".

By the way, the Oracle documentation also states that there may be problems in using "select *", and recommends using explicit column lists instead.

Perhaps you shoud [re?] read the Oracle documentation?

Good Luck,
Avi.