When thinking of high availability for the Oracle Database, RAC and DataGuard come into our mind. But when thinking about high availability for the Standard Edition 2 (SE2) of the Oracle Database, we think about … ? Until Oracle Database 18c, we thought about RAC, too. But since Oracle 19c, there’s SEHA - “Standard Edition High Availability”. What is this feature about, what are the restrictions and how to configure a database for SEHA? Beside that, we’ll see how the Multitenant feature “Refreshable PDB” can serve as a “poor man’s DataGuard alternative for SE2".