Mediawiki installation/Trouble shooting

Cannot access the database

• configuration in Global MediaWikisettings correct? (Version-dependent files like: MediaWikiCommonSettings_REL1_26.php)
• has user wikiuser access? If not execute something like: GRANT SELECT, INSERT, UPDATE, DELETE, CREATE, DROP, INDEX, ALTER, CREATE TEMPORARY TABLES, LOCK TABLES ON `my_database` . * TO 'wikiuser'@'localhost';