A data synchronization method and a data synchronization device
A data synchronization and database technology, applied in the direction of structured data retrieval, database distribution/replication, etc., can solve problems affecting the efficiency of synchronization, transaction loss, increase the amount of data processed by synchronization log data, etc., to reduce the amount of data processing, The effect of improving efficiency
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Embodiment 1
[0065] See figure 2 The method of data synchronization in this embodiment is specifically described. Among them, the data synchronization method of this embodiment explains the data synchronization method of the present invention from the perspective of the source database. The data synchronization method includes the following steps:
[0066] Step 10: The source synchronization tool obtains the backup file generated by the source database.
[0067] Among them, the source database includes either DM6 database or DM7 database, which can be selected according to actual conditions.
[0068] In actual application scenarios, the source database generates database backup files according to the online backup command. Because during the backup process, the source database will still have transactions, the source database also obtains the transaction log corresponding to the backup start time to the backup completion time , Where the transaction log includes the active transaction log and ...
Embodiment 2
[0084] See image 3 The method of data synchronization in this embodiment is specifically described. Among them, the data synchronization method of this embodiment explains the data synchronization method of the present invention from the perspective of the destination database. The method for database synchronization in this embodiment includes the following steps:
[0085] Step 20: The destination synchronization tool receives the backup file sent by the source synchronization tool, and obtains the reference database and the active transaction log according to the backup file.
[0086] In this embodiment, the destination synchronization tool receives the backup file sent by the source synchronization tool, and obtains the reference database according to the backup file. Wherein, the backup file includes a data file and a transaction log corresponding to the source database from the start of the backup to the completion of the backup. The transaction log includes an active transa...
Embodiment 3
[0119] See Image 6 , Image 6 It is a schematic structural diagram of a data synchronization device provided by an embodiment of the present invention. The data synchronization device of this embodiment includes one or more processors 61 and a memory 62. among them, Image 6 Take a processor 61 as an example.
[0120] The processor 61 and the memory 62 may be connected by a bus or other means, Image 6 Take the bus connection as an example.
[0121] The memory 62, as a non-volatile computer-readable storage medium based on data synchronization, can be used to store non-volatile software programs, non-volatile computer-executable programs and modules, such as the data synchronization method in Embodiment 1. And the corresponding program instructions. The processor 61 executes various functional applications and data processing of the data synchronization method by running the non-volatile software programs, instructions, and modules stored in the memory 62 to implement the data s...
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