Thomas,

> jdbcProperties.put ("charSet", "ISO8859_1");

jdbcProperties.put ("lc_ctype", "ISO8859_1");

> jdbcProperties.put ("dialect", "3");

you do not need this one. dialect 3 is by default. dialect 1 is not
supported (at least that was status quo till recently).

> If "lc_ctype" will be used, then another exception occurs, which
> probably has someting to do with the Promomatter connection pool.

Can you paste the stack trace of that exception?

Best regards,
Roman