Oracle Connection - java.lang.ClassCastException

Question

Hi there,
I am trying to connect to Oeacle database from Java application( Webdynpro from SAP).
I have created a datasource in J2EE Engine, and trying to connect with ffolowing code:
InitialContext ctx = new InitialContext();
DataSource ds = (DataSource)ctx.lookup("jdbc/COGNOS_DATA_SOURCE");
I am getting classcast exeption at DataSource ds = (DataSource)ctx.lookup("jdbc/COGNOS_DATA_SOURCE");
Any clue?
Thanks
Deepti

Answer 1

With the new Oracle drivers there is no need to do it that complicated.
Finally Oracle has implemented the standard JDBC calls, and inserting a CLOB is really easy now:
String clobContent  = populateClobData(); // whatever...
stmt = con.prepareStatement("INSERT INTO clob_table (id, clob_col) VALUES (?,?)";
stmt.setInt(1, 42);
Reader r = new StringReader(clobContent);
stmt.setCharacterStream(2, r, clobContent.length());
stmt.executeUpdate();
con.commit();This works with UPDATE as well. If you need to deal with BLOBs simply use setBinaryStream().
Reading is done using getCharacterStream() or getBinaryStream()
This actually works across all (or at leas all major) database systems