Ensuring consistent replication of updates in databases

A computer system comprising:

• a memory;
• and
• a processor system communicatively coupled to the memory;
• the processor system configured to perform a method comprising:
• reading log data, wherein the log data comprises a hardware-replicated set of log data, and the log data reflects that an update was started for a database of a first site, and wherein the processor system corresponds to a processor system of a second site;
• identifying the update;
• determining whether the update was committed to the database of the first site;
• and
• replicating the update to a database of the second site based on the determining, wherein the update is replicated to the database of the second site based on a determination that the update was committed to the database of the first site, and the committed update corresponds to a consistent replication of updates across two or more databases.

A computer program product comprising:

• a computer-readable storage medium having program instructions embodied therewith, wherein the computer-readable storage medium is not a transitory signal per se, the program instructions readable by a processor system to cause the processor system to perform a method comprising:
• reading, by a capture engine, log data, wherein the log data comprises a hardware-replicated set of log data, and the log data reflects that an update was started for a database of a first site, and wherein the capture engine corresponds to a capture engine of a second site;
• identifying, by the capture engine, the update;
• determining whether the update was committed to the database of the first site;
• and
• replicating, by an apply engine, the update to a database of the second site based on the determining, wherein the update is replicated to the database of the second site based on a determination that the update was committed to the database of the first site, and the committed update corresponds to a consistent replication of updates across two or more databases.