Oracle 11 drivers don't accept NVARCHAR type -------------------------------------------- Key: TEIID-5587 URL: https://issues.jboss.org/browse/TEIID-5587 Project: Teiid Issue Type: Bug Components: JDBC Connector Reporter: Steven Hawkins Assignee: Steven Hawkins Priority: Major Fix For: 12.0, 11.2.2 Older oracle drivers, such as 11.2.0.1.0 do not accept the sql type NVARCHAR as an argument to set object, which results in an exception like: {code} Caused by: java.sql.SQLException: Invalid column type at oracle.jdbc.driver.OraclePreparedStatement.setObjectCritical(OraclePreparedStatement.java:12187) at oracle.jdbc.driver.OraclePreparedStatement.setObjectInternal(OraclePreparedStatement.java:11577) at oracle.jdbc.driver.OraclePreparedStatement.setObject(OraclePreparedStatement.java:12286) at oracle.jdbc.driver.OraclePreparedStatementWrapper.setObject(OraclePreparedStatementWrapper.java:548) at org.teiid.translator.jdbc.JDBCExecutionFactory.bindValue(JDBCExecutionFactory.java:1145) {code} We can also safely narrow our usage of the n types with oracle as anything in the latin 1 supplement is still allowed in varchar values.