I have a db, that I use since FB 1 and currently I work with FB 2.0 and
the ODS of the db is 11. When I backup the db and restore it with fb
2.1, so that the ODS is 11.1, I can't run the following query:

SELECT RDB$DESCRIPTION
, RDB$VIEW_SOURCE
, RDB$RELATION_NAME
, RDB$RELATIONS.RDB$DB_KEY
FROM RDB$RELATIONS
WHERE RDB$RELATION_NAME NOT STARTING WITH 'RDB$'
ORDER BY RDB$RELATION_NAME ASC

I get the error:

ISC ERROR CODE:335544565
ISC ERROR MESSAGE:
Cannot transliterate character between character sets

I have looked at RDB$RELATIONS with ODS 11 and 11.1, but I can't find
any difference. Please can someone give a hint, what has changed in FB
2.1, that causes the problem.

Regards

Guido