International Business Machines Corporation
CLEANING COMPENSATED CHANGE RECORDS IN TRANSACTION LOGS

Abstract:

Disclosed is a method of operating a computer implemented database. The method comprises: receiving log records descriptive of database transactions from a source database; writing the log records to a transaction log; reading at least a portion of the log records to a temporary log record buffer; searching the temporary log record buffer to identify compensated log entries; and modifying the transaction log using the compensated log entries.