On Linux? Try setting these variables before starting.
I've heard the -Dfile.encoding parameters are not always reliable.
Rick, Thanks for replying. Just tried your suggestion. Still, in boot.log it shows file.encoding is ISO-8859-1.
My post is a bit late However, you posting helped me to solve the german "Umlaut" problem (e.g. ä, ö,...) by adding the variables in my user profile. My boot.log shows the file.encoding was changed and those letters are saved correctly in my mysql database.