The active Data Guard feature is not something new. It has been on since Oracle Database version 11g, but it is the first time I am writing about it on my blog (I think so!), and I think it is always nice not to miss anything on our career path. So here we go! Before Oracle Database version 11g, it was already possible to open Oracle Data Guard in open mode. Still, there were some complications, e.g., when it was needed to recover the standby database. Thinking on that, Oracle…