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Database backup method capable of guaranteeing data consistency

A database and consistency technology, applied in database management systems, redundancy in computing, data error detection, structured data retrieval, etc., can solve problems such as increased management costs, inconsistent backup management, etc., to reduce management costs , to maintain a consistent effect

Inactive Publication Date: 2014-06-11
LANGCHAO ELECTRONIC INFORMATION IND CO LTD
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Problems solved by technology

This method has a disadvantage. When the data transmission process is interrupted, the task will fail from the perspective of the task, but the backup will be successful from the perspective of the database, which will cause backup management. Inconsistency, if the backup task type is incremental backup, the backup failed from the perspective of the task, but the backup was successful from the perspective of the database. When the next incremental backup is performed, the task will be based on the last successful task Increment, while the database will carry out the increment of the last incremental backup, which requires additional management costs to judge

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Embodiment Construction

[0021] A database backup method for ensuring data consistency, the method comprising: a backup agent end, an atomic operation device, an atomic operation interface, and a backup server;

[0022] The backup agent is installed on the machine that needs to perform backup operations. It is used to control the entire backup process and initiate backup operations. It reads the data being backed up through the atomic operation device and sends it to the backup server for storage.

[0023] The atomic operation device is created by the backup agent. Each atomic operation device has a globally unique name in a database to identify the device. When a backup request is issued, the backup agent will pass the backup parameters and backup device to the database Parameters include device name, block size, buffer size, etc.;

[0024] The atomic operation interface implements the interface of the atomic operation device. When the atomic operation device receives the write data command, it sends...

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Abstract

The invention provides a database backup method capable of guaranteeing data consistency. According to the database backup method, the problem of asynchronous data backup and data transmission in a database backup process is solved through four constituent parts including a backup agent, an atomic operation device, an atomic operation interface and a backup server. According to the database backup method, atomization of data backup and data transmission is implemented, the management cost of the database backup process is greatly reduced, and consistency of the database is guaranteed.

Description

[0001] technical field [0002] The invention relates to the field of database backup, in particular to a database backup method for ensuring data consistency. Background technique [0003] The data backup system is to copy the original data to a special media for storage. In case of a disaster event or the original data is damaged or lost due to a certain reason, the backup data copy is restored to the system through a specific data recovery mechanism. The process, the data backup system is one of the important technical means to promote the harmonious, healthy and orderly development of my country's informatization construction, and has been widely used in core data fields such as national defense, military affairs, education, finance, securities, network, and communication. [0004] However, there is a disadvantage in the traditional database backup process. The general database backup method is divided into two parts. First, the database data needs to be backed up to...

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Application Information

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IPC IPC(8): G06F17/30G06F11/14
CPCG06F16/25G06F11/1464G06F16/2365
Inventor 穆裕王旭张道伟
Owner LANGCHAO ELECTRONIC INFORMATION IND CO LTD
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