Data mining method for remaking log file for Oracle database

The invention discloses a data mining method for remaking a log file for an Oracle database, which comprises the following steps of: tracking log change by quickly analyzing a log, mining the log at the first time of the change to obtain a data change fragment, caching log change data in a local file system, and then transmitting the log change data to a standby end through a transmission process;enabling the standby end synthesis process to synthesize the log fragments into a log file; finally, enabling the application process to analyze and register the log, and writting the log file into adisaster recovery backup database after verification and registration are passed, so as to achieve database data replication. According to the invention, a heterogeneous operating system and a database management system are supported, so that data synchronization between different database management systems and operating system platforms is facilitated for customers; compared with the transmission of the whole log file,