Thread:Talk:MediaWiki/wrong database selected

I tried to install mediawiki today. Currently i am using a debian server with php5 and mysql5.1 and wiki 1.18.1.

After installation an error appeared: "(Can't contact the database server: Access denied for user 'wikiuser'@'localhost' to database 'my_wiki' (localhost))" i never selected 'wikiuser' and 'my_wiki' in the installation process. i created my own database incl. user before and apparently that setting wasn't successful. tried this a few times. wasn't able to find a solution, may you're able to help me? kind regards