Process, device and system for EMS memory data-base remote disaster tolerance

A database and memory technology, which is applied in the field of memory database, can solve the problems that data loss cannot be recovered, and there is no remote disaster recovery scheme for memory database.

Active Publication Date: 2008-02-06
HUAWEI TECH CO LTD
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  • Abstract
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  • Claims
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Problems solved by technology

[0006] With the improvement of application requirements and performance requirements, the data storage body of the memory database will be gradually converted from the disk to the memory itself. However, due to the data volatility of the memory, if the system where the memory database is located fails, all the data i...

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  • Process, device and system for EMS memory data-base remote disaster tolerance
  • Process, device and system for EMS memory data-base remote disaster tolerance
  • Process, device and system for EMS memory data-base remote disaster tolerance

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Embodiment Construction

[0035] In order to make the purpose and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0036] First, the device for remote disaster recovery of an in-memory database according to the embodiment of the present invention is introduced, including a local device and a remote device.

[0037] Figure 1 is a schematic structural diagram of a device on the remote side of an in-memory database for remote disaster recovery according to an embodiment of the present invention. The device on the remote side includes:

[0038] The logical log processing module is used for receiving and backing up the logical log from the local device; executing the received logical log and updating the data in the disaster recovery memory database module.

[0039] The disaster recovery memory database module is used to store data.

[0040] The disk mirroring m...

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Abstract

The present invention discloses a long-distance disaster tolerating method for an EMS memory database, and the method includes receiving the logic log generated by the main EMS memory database executing the business operation and making a backup; executing the logic log and refreshing the date in the disaster tolerating database, and backup the data in the disaster tolerating database. When the main EMS memory data is wrong but the disaster tolerating database is normal, the disaster tolerating database can be used; when the disaster tolerating database is wrong, the disaster database can be retrieved by using the backup data and the logic log, and then the disaster tolerating database can be used again. The present invention also discloses a long-distance disaster tolerating remote side device of the EMS memory database, a long-distance disaster tolerating local side device of the EMS memory database, and a long-distance disaster tolerating system of the EMS memory database. The present invention can use the EMS memory as the main data storing body, and can realize the long-distance disaster tolerating of the EMS memory database.

Description

technical field [0001] The invention relates to memory database technology, in particular to a method, device and system for remote disaster recovery of memory databases. Background technique [0002] Database disaster recovery is based on the database. It establishes a disaster recovery database that is the same as the main database in a logical way and updates it in real time. It is used to take over the business system in time to ensure business continuity when a disaster occurs in the main database. [0003] There are many reasons for the disaster, which can be caused by factors of the computer system where the database is located, such as damage to the storage medium, or by factors other than the computer system, such as natural disasters. Using remote disaster recovery, the geographical location is divided into local and remote, and the main database is established locally, while the disaster recovery database is established in other places, which is equivalent to geog...

Claims

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Application Information

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IPC IPC(8): G06F11/14G06F17/30
Inventor 周丹弟
Owner HUAWEI TECH CO LTD
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