6.1.2.1.11. Does MySQL have limitation affecting on eXo JCR features?

Index's key length of JCR_SITEM (JCR_MITEM) table for mysql-utf8 dialect is reduced to 765 bytes (or 255 chars).

6.1.2.1.10. How to setup eXo JCR for mutilingial content on MySQL?
6.1.2.1.12. Does use of Sybase database need special options in eXo JCR configuration?