I have two replicas in availability group. Also I have additional instance instance3, with dummy databases that are not in availability group.
As time has passed, some new things started to be stored on that dummy database and now I have to add it to Availability group.
I followed user guide as described here: https://docs.microsoft.com/en-us/sql/database-engine/availability-groups/windows/availability-group-add-a-database but when I get to specify new database, in wizard, that I want to add to availability group, I don't see that database in the list.
Did I miss some step in the middle or I am doing it completely wrong?
Additional note is that there is a database with same name but from another instance in availability group. Will that maybe create problem? I guess there can't be two DB with same name and now is little late to change name of DB.