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Hibernate version:3.1.2

Mapping documents:

Code between sessionFactory.openSession() and session.close():
Transaction tx = session.beginTransaction();
Query q = session.getNamedQuery("getOperations");
q.list();
tx.commit();
Full stack trace of any exception that occurs:
org.hibernate.exception.GenericJDBCException: could not execute query
at org.hibernate.exception.SQLStateConverter.handledNonSpecificException(SQLStateConverter.java:91)
at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:79)
at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43)
at org.hibernate.loader.Loader.doList(Loader.java:2148)
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2029)
at org.hibernate.loader.Loader.list(Loader.java:2024)
at org.hibernate.loader.custom.CustomLoader.list(CustomLoader.java:111)
at org.hibernate.impl.SessionImpl.listCustomQuery(SessionImpl.java:1674)
at org.hibernate.impl.AbstractSessionImpl.list(AbstractSessionImpl.java:147)
at org.hibernate.impl.SQLQueryImpl.list(SQLQueryImpl.java:164)
at de.gloegl.road2hibernate.EventManager.listOperations(EventManager.java:63)
at de.gloegl.road2hibernate.EventManager.main(EventManager.java:29)
Caused by: java.sql.SQLException: Missing IN or OUT parameter at index:: 1
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:125)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:162)
at oracle.jdbc.driver.OraclePreparedStatement.processCompletedBindRow(OraclePreparedStatement.java:1536)
at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:2880)
at oracle.jdbc.driver.OraclePreparedStatement.executeQuery(OraclePreparedStatement.java:2926)
at org.hibernate.jdbc.AbstractBatcher.getResultSet(AbstractBatcher.java:139)
at org.hibernate.loader.Loader.getResultSet(Loader.java:1669)
at org.hibernate.loader.Loader.doQuery(Loader.java:662)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:224)
at org.hibernate.loader.Loader.doList(Loader.java:2145)
... 8 more
Name and version of the database you are using: Oracle 9i

The generated SQL (show_sql=true):
FUNCTION getOperations RETURN results_cursor IS
cur results_cursor;
BEGIN
OPEN cur FOR
SELECT idtran ,idoper ,timeini ,oper ,success FROM oper_log;
RETURN cur;
END;
Debug level Hibernate log excerpt:
INFO

I can't see what is wrong.. Please help me.