To ensure that the replicated statements are applied in the correct order, the Guaranteed Message Delivery System uses the transaction log offsets of the publisher and subscriber databases. Each COMMIT is marked in the transaction log by a well-defined offset. The order of transactions can be determined by comparing their transaction log offset values.
Each message includes the following transaction log offsets:
The transaction log offset of the last COMMIT in the previous message. If a transaction spans several messages, there is a sequence number within the transaction to order the messages correctly.
The transaction log offset of the last COMMIT in the message.
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