Officially, Broadcom Support does not support setting up replication for any database other than the SSG database, thus excluding the OTK database. However, there are some recommendations for how to get the OTK database replicating between MySQL database servers.
If MySQL replication is not yet running, consider starting MySQL replication first then create the OTK database so that it is automatically replicated to the other MySQL database server. This is considered to be the best practice / best approach to this concern.
If the OTK database was already created prior to MySQL replication running and replication was initiated afterwards, then it's very likely that only the SSG database is actually replicating and OTK was not included in the initial setup of replication. In such a case, it would be wise to consider dropping the OTK database and recreating it so that it will then automatically be replicated to the other MySQL servers. If there is already data in the OTK database that is production-level, be sure to back it up first before dropping the database. The database can then be dropped, recreated, and the data can be imported back into it once ready.