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java.sql.SQLException: Unknown connection type. at oracle.xdb.XMLType.initConn( at oracle.xdb.XMLType.<init>( at oracle.xdb.XMLType.createXML( at oracle.xdb.XMLTypeFactory.create( at oracle.sql.OPAQUE.toClass( at oracle.sql.OPAQUE.toJdbc( at oracle.jdbc.driver.OracleStatement.getObjectValue( at oracle.jdbc.driver.OracleStatement.getObjectValue( at oracle.jdbc.driver.OracleResultSetImpl.getObject( at oracle.jdbc.driver.OracleResultSet.getObject( at at