Method, System, and Computer Program Product for Ensuring Data Consistency of Asynchronously Replicated Data Following a Master Transaction Server Failover Event

A system for ensuring data consistency during asynchronous replication of data from a master transaction server to a plurality of replica transaction servers, said system comprising:

• a processor;
• a memory coupled to the processor;
• and
• a replication (REPL) utility executing on the processor for providing the functions of:
• responsive to receiving a transaction request at the master transaction server, recording in the plurality of replica transaction servers a set of transaction identifiers, wherein said set of transaction identifiers identify a data operation specified by the received transaction request and enables one of said plurality of replica transaction servers to recover handling requests in response to a failover event;
• responsive to receiving an acknowledgement (ACK) signal from the plurality of replica transaction servers, committing data resulting from the identified data operation within local memory of the master transaction server;
• and
• responsive to completing said committing data within the master transaction server's local memory, sending a post commit signal to the plurality of replica transaction servers, wherein the post commit signal commits data resulting from the identified data operation within local memory of at least one of the plurality of replica transaction servers.

A computer program product comprising:

• a computer readable medium;
• and
• program code on the computer readable medium that when executed by a processor provides the functions of:
• responsive to receiving a transaction request at the master transaction server, recording in the plurality of replica transaction servers a set of transaction identifiers, wherein said set of transaction identifiers identify a data operation specified by the received transaction request and enables one of said plurality of replica transaction servers to recover handling requests in response to a failover event;
• responsive to receiving an acknowledgement (ACK) signal from the plurality of replica transaction servers, committing data resulting from the identified data operation within local memory of the master transaction server;
• and
• responsive to completing said committing data within the master transaction server's local memory, sending a post commit signal to the plurality of replica transaction servers, wherein the post commit signal commits data resulting from the identified data operation within local memory of at least one of the plurality of replica transaction servers.