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Oracle Data Source, WebSphere 5 ClassCastException WSJdbcResultSet
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Gennadiy Civil
Greenhorn
Joined: Feb 09, 2005
Posts: 1
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Hello: I have a query that causes classCast Exception when executed using Oracle data surce. Same query runs fine with straight JDBC. I should mention that this query gets the image from Oracle using the following code: import oracle.ord.im.OrdImage; import oracle.jdbc.OracleResultSet; import oracle.jdbc.OraclePreparedStatement; ..... conn = //getConnection stat = conn.createStatement(); OracleResultSet rset = (OracleResultSet) stat.executeQuery(sql); rset.next(); OrdImage.getORADataFactory()); OrdImage imageProxy =(OrdImage) rset.getCustomDatum("PROPERTY_PHOTO", OrdImage.getFactory()); rset.close(); Here is the exception java.lang.ClassCastException: com.ibm.ws.rsadapter.jdbc.WSJdbcResultSet Any ideas? Thanks
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Carl Trusiak
Sheriff
Joined: Jun 13, 2000
Posts: 3340
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The problem lies here: conn = //getConnection You are getting a connection from WebSpheres connection Pool. This wraps the underlying jdbc objects with it's own. You will need to do some investigation and determine if the WebSphere ResultSet object has any access methods to get the wrapped resultset (Oracles) and get that. Second try configuring a different Provider for the DataSource (Oracles) check your server documentation for this. Finally you may need to do a direct connection instead of getting it out of the pool to do this.
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I Hope This Helps
Carl Trusiak, SCJP2, SCWCD
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Ronnie Ho
Ranch Hand
Joined: Aug 10, 2005
Posts: 47
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Hi Gennadiy, Do you have a solution to the ClassCastException, I am doing exactly the same thing and getting the exact error when trying to typecast the resultSet. Thanks.
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Jeanne Boyarsky
internet detective
Marshal
Joined: May 26, 2003
Posts: 26184
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Ronnie, Welcome to JavaRanch! Note that the question was from six months ago and the original poster may not still be around. Can you post the code snippet throwing the exception so we can take a look at it?
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subject: Oracle Data Source, WebSphere 5 ClassCastException WSJdbcResultSet
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