JDBC Drivers compatability between Oracle and IBM WSAD 5.1.1

Question

I am using a DataAccessObject pattern. I discovered you can speed up your procesing with SELECT statments us using an OraclePreparedStatment and setting defineColumnType; thereby reducing the number of trips the SQL is sent to the database.
Here is the code:
((OraclePreparedStatement)ps).defineColumnType(1, Types.BIGINT);'ps' is a PreparedStatement.
However, at runtime, I am getting a class cast exception for the below reason. I am using WASD version 5.1.1. I was not aware IBM was using any specific classes in the JDBC drivers.
[2005-05-23 15:36:59,855][Servlet.Engine.Transports : 2][ERROR][{TDAO}{getTWebInfos}{APP0000}{Unknown Contained Application Exception}{External Message:com/ibm/ws/rsadapter/jdbc/WSJdbcPreparedStatement incompatible with oracle/jdbc/OraclePreparedStatement}]
{TDAO}{getTWebInfos}{APP0000}{Unknown Contained Application Exception}{External Message:com/ibm/ws/rsadapter/jdbc/WSJdbcPreparedStatement incompatible with oracle/jdbc/OraclePreparedStatement}
     at java.lang.Throwable.(Throwable.java)Could someone please explain this to me? Any help would be greatly appreciated.

Answer 1

I'm not an WSAD expert to be honest, but it's quite possible they are using their own wrappers. Check out what calls you can make on their ps wrapper or more likely conn wrapper - they may have some type of getWrappedConnection functionality as other vendor(s) do in which case you can, eg, cast the connection to OracleConnection and go from there.