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A method of implementing oracle RAC without shared storage in a dual-machine system

A shared storage, dual-computer system technology, applied in the field of RAC clusters, can solve problems such as inability to achieve, and achieve the effect of ensuring continuity and good reusability

Active Publication Date: 2019-06-28
HANGZHOU WOQU NETWORK TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of implementation idea is a very novel idea. Many people think it is impossible to realize. The reason is that the voting disk in the usual Oracle RAC needs to be placed in shared storage, which cannot be achieved when there are only two machines. Function

Method used

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  • A method of implementing oracle RAC without shared storage in a dual-machine system

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Embodiment 1

[0025] Such as figure 1 As shown, a method for implementing Oracle RAC without shared storage in a dual-machine system includes a first server and a second server, and includes the following steps:

[0026] (1) allocate a same space respectively from the first server and the second server, and generate the first block device and the second block device respectively by the space allocated by the first server and the second server through a block device driver;

[0027] (2) Give the first piece of equipment and the second piece of equipment to Oracle RAC as the Voting Disk. When the first server requests to write to the Voting Disk, the block device driver sends the write request to the local first piece of equipment, and at the same time through The network sends the write request to the second device on the second server, so that the first device and the second device are always synchronized; when the second server requests to write to the Voting Disk, the block device driver ...

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Abstract

The invention relates to the field of RAC (real application cluster) of an Oracle database and discloses a method for realizing Oracle RAC through shared-nothing storage of a dual system. According to the method, a first server and a second server are adopted, certain spaces are allocated from the insides of the two servers, block devices are generated from the two spaces through a block device drive, then the two block devices are taken as Voting Disks in the Oracle RAC, and when one block device fails, the other block device can work and store and back-up data, so that when a single-point failure problem occurs, the Oracle RAC can continue working, and work continuity is guaranteed. After the failed block device is replaced, normal work can be recovered, and good reusability is realized. The two servers are used for establishing the Oracle RAC under the condition that storage of a third party or a third machine is unavailable, and the method for realizing the Oracle RAC through shared-nothing storage of the dual system is realized. The Oracle RAC scheme avoiding single-point failures can be realized with only two servers, and the economic benefits of enterprises are improved.

Description

technical field [0001] The invention relates to the field of RAC clusters of Oracle databases, in particular to a method for realizing Oracle RAC without shared storage in a two-machine system. Background technique [0002] Oracle RAC is a parallel mode in the database, not the traditional active-standby mode of the database. That is to say, all members of the RAC cluster can receive requests from clients at the same time. Oracle RAC mainly supports Oracle9i, 10g, 11g, and 12c versions , can support 24x 7 effective database application system, build a high-availability database system on a low-cost server, and freely deploy applications without modifying the code. In the Oracle RAC environment, Oracle Corporation provides integrated cluster software and storage management software. When the application scale needs to be expanded, users can expand the system as needed to ensure system performance. It has the following characteristics: [0003] (1) Multi-node load balancing, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F11/20G06F16/27G06F16/28H04L12/26H04L29/08
CPCG06F11/2069G06F11/2082G06F16/27G06F16/284G06F2201/80H04L43/10H04L67/1097
Inventor 唐成李建辉
Owner HANGZHOU WOQU NETWORK TECH
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