Microsoft SQL Server: SQL Server 2016 or later, Always On Availability Groups, Failover Cluster Instances, replication, backup and restore, SQL Server Agent, SSIS, SSRS, T-SQL, execution-plan analysis, indexing, and performance monitoring. Oracle: Oracle Database 12c/19c or later, RAC, Data Guard, RMAN, ASM, GoldenGate, multitenant architecture, Enterprise Manager, SQL, PL/SQL, performance diagnostics, patching, backup, and recovery.