no tiago u missed what i said sure firstly you have to create openser database using openser_mysql.sh but what i intended to say , when you run serMyAdmin it will attempt to create tables that aren't installed by defualt during openser database creation this happens during the first time you run serMyAdmin and another thing after applyin the openser.sql file from sermyadmin it will modify others i think you can follow these steps : 1-drop your openser databases e.g openser_mysql.sh drop and create it again substitue drop with create 2- make sure you installed tomcat correctly and you can see the greeting page of it 3- copy the mysql driver to tomcat shared libraries directory 4- configure the context.xml file at /dir/tomcat/conf/context.xml and edit it with the information supplied by sermyadmin.org tutorial 5- apply the openser.sql to your database e.g mysql -u root -p openser <openser.sql i think if you follow the tutorial at sermyadmin.org step by step you will get everything works fine note : the default username and password for serMyAdmin login page is admin@setup and secret respectivley