All WSO2 Carbon-based products are Java applications that can be run on any platform that is Oracle JDK 1.6.*/1.7.* compliant. JDK 1.8 is not supported yet. Also, we do not recommend or support OpenJDK.
All WSO2 Carbon-based products are generally compatible with most common DBMSs.For more information, see Working with Databases.
It is not recommended to use Apache DS in a production environment due to issues with scalability. Instead, it is recommended to use an LDAP like OpenLDAP for user management.