Which ojdbc14.jar JDBC driver to use for Oracle 10g database

When ODI is installed there seems to be an Oralce JDBC driver in place in the drivers folder (ojdbc14.jar).
When we connect to an Oracle datastore and point to a table and use the 'reverse' function to populate the columns - it sort of works OK but does not bring back the datatypes properly. This is found to be when the Oracle table has UNICODE character datatypes NCHAR and NVARCHAR. If a table has CHAR and VARCHAR it is all OK but any table that has UNICODE datatyoe has a problem.
Is this likely to be the JDBC driver ?
We have tried replacing this ojdbc14.jar with the older classes12 and this, as expected, did not resolve the issue.
We then tried replacing it with the latest 10.2.0.4 ojdbc14.jar but again no difference.
Does anyone have any experience with Oracle JDBC drivers and what release level to use - and using against UNICODE datatypes in tables ?
Regards

Our problem is that when we use 'reverse' to populate the columns from a physicla table in an Oracle database - ODI is obviously 'seeing' the ORacle table and is correctly understanding the columns in the table and defining them in it's model - but wherever there is a column with a datatype in the ORacle database of NCHAR or NVARCHAR it fails to populate the datatype or the 'length' of these columns. If I manually try to specify the datatype these 2 unicode data types do NOT exist in the pull down list of datatypes.
I see what you are asking - if these datatypes are actually defined as datatypes within the actual technology - I cant access my lab right now but will check as soon as I can. Thanks for the suggestion.

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right click ur project and select properties. In Java Build Path add the ojdbc14.jar in the librariies tab.
http://www.oracle.com/technology/tech/java/sqlj_jdbc/htdocs/jdbc_faq.html
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Database, I get the error message:
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>
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Which ojdbc14.jar JDBC driver to use for Oracle 10g database

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