It is recommended that customers who have utilized the internal JDBC membership domain from releases prior to MetaMatrix 5.5 migrate those users and groups to an LDAP compliant directory server.  Several free and open source directory servers can be used including:

The Fedora Directory Server http://directory.fedoraproject.org/

Open LDAP http://www.openldap.org/

Apache Directory Server http://directory.apache.org/

See the JBossAS security documentation for using an LDAP directory server. If there are additional questions or the need for guidance in the migration process, please contact technical support.