GetGeneratedKeys() functionality in 10G

Question

Hello,
The getGeneratedKeys() function on Statement or PreparedStatement class does not seems to be supported? Also not when using Oracle 10g JDBC driver (version 10.1.0.2.0) when connecting to 9I database (9.2.0.5)? When trying it I get SQLException: Unsupported feature.
Is the getGeneratedKeys() function supported when connecting to a 10g database?
I'm migrating from another database platform (Informix), and found the use of serial keys handy. What I have done now on Oracle is created a sequence and "before insert" trigger which automatically inserts new value for key field. I had hoped that the getGeneratedKeys() function should have worked...
In case it is not supported, what is the advised way to retrieve new key value?
Thanks!
Kristof Adriaenssens

Answer 1

Thanks for the tip Avi.
In the meanwhile I already found that getGeneratedKeys() is indeed not supported: http://www.oracle.com/technology/tech/java/sqlj_jdbc/htdocs/jdbc_faq.htm#02_04
I however found a solution which requires some more code then I hoped for, but it works. Here an example:
PreparedStatement statement=con.prepareStatement("INSERT INTO autoinc_test (NAME) VALUES (?)");
statement.setString(1,"Test");
statement.executeUpdate();
Statement getAutoGenValueStatment=con.createStatement();
ResultSet rs=getAutoGenValueStatment.executeQuery("select autoinc_test_seq.currval from dual");
if (rs.next())
System.out.println("Serial value: "+rs.getInt(1));
rs.close();
getAutoGenValueStatement.close();
statement.close();
The retrieval of currval on a sequence returns correct value as it is session dependent. So even when another session inserts a record in same table after our session inserted a record and before retrieving the currval, we are sure that we will get correct value.