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Data migration method and device

A data and database technology, applied in the field of data processing, can solve the problems of long downtime of the application system, and achieve the effect of shortening the downtime and shortening the downtime.

Inactive Publication Date: 2016-10-05
SEMICON MFG INT (SHANGHAI) CORP
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Problems solved by technology

[0006] The main purpose of the present invention is to provide a data migration method and device to solve the problem of long application system downtime when migrating large-capacity databases in the prior art

Method used

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Embodiment Construction

[0026] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0027] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0028] It should be noted that the terms "fir...

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Abstract

The invention provides a data migration method and device. The data migration method includes: importing first data of a semiconductor device acquired from a source database into a target database at the first time; synchronizing second data extracted from the source database to the target database at the second time; determining if a time difference between the first time and the preset time is greater than a first preset threshold or not; suspending an application system if the time difference between the second time and the preset time is not greater than the first preset threshold, and importing third data different from the first data and the second data of the source database; and synchronizing the second data extracted from the database to the target database at the second time if the time difference between the second time and the preset time is greater than the first preset threshold. The data migration method and device can solve the problem that when a high-capacity database is migrated, the downtime of the application system is too long in the prior art, and can shorten the downtime of the application system when data of the source database is migrated to a target database.

Description

technical field [0001] The present invention relates to the field of data processing, in particular to a data migration method and device. Background technique [0002] The database in the server in use stores a large amount of data. When the server hardware needs to be updated, the database in the server needs to be migrated to the new hardware platform one after another, so as to obtain long-term and stable maintenance support for the hardware and operating system platform. . [0003] There is only one solution for the migration of databases across hardware platforms: import and export (exp / imp). This solution needs to shut down the server in use before migrating the database. If the database capacity is large (such as, 300G), it takes a long time to import and export (for example, it takes about 40 hours for a database with a capacity of 300G) to complete the migration of the entire database. [0004] For companies that require uninterrupted server operation (such as se...

Claims

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Application Information

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IPC IPC(8): G06F17/30
Inventor 楼冰卉
Owner SEMICON MFG INT (SHANGHAI) CORP
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