Systems and methods include reception of a workload statement, determination of whether the workload statement is a read statement or write statement, and, if the workload statement is a read statement, execution of the read statement to generate a first result set and transmission of the read statement for execution by a second database system to generate a second result set. If the workload statement is a write statement, the write statement is executed to change data of the first database system and the changed data is replicated to the second database system.