Are you running within a managed environment? We seem to be getting a
similar exception when we use the Oracle9i platform support class, I suspect it's caused by
WebLogic wrapping the Oracle connection object.
Generic unwrapping of both Connection and PreparedStatement have been added to the PlatformOracle9iImpl. Current implementation knows about Oracle10g, BEA WebLogic, Apache Commons DBCP and P6spy wrappers.
The PlatformWLOracle9iImpl has been marked as deprecated, as the standard platform should work also in BEA WebLogic.
If unwrapping fails, the 9i platform is still usable (but has the 2k/4k BLOB/CLOB limits and no ORA performance-extensions activated).
This is in CVS now and should be available with the upcoming OJB 1.0.2 release.
Please re-test if possible.
Regards, Martin
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