How to change the output encoding of Oracle command line tools to UTF8?
Thank you very much - I found the solution.

First, the output encoding of the Oracle command line tools can be controlled by


either the NLS_LANG environment variable (in my situation, a value of GERMAN_GERMANY.AL32UTF8 was needed)
or through the registry by the key HKEY_LOCAL_MACHINE\SOFTWARE\ORACLE\NLS_LANG


Thank you very much for all - I leave this question to make the googlers of the future happier. :-)