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Method and system for improving availability of DB2 DPF

An availability, one-to-one correspondence technology, applied in the database field, can solve problems such as inability to access partitioned data, low availability, and reduced user experience

Inactive Publication Date: 2015-12-02
INSPUR BEIJING ELECTRONICS INFORMATION IND
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Problems solved by technology

[0003] However, when any node in DPF fails, because DPF adopts a non-shared architecture mode, the application of the client cannot access the partition data under the failed node, which is the single point of failure in DPF question
It can be seen that the single point of failure of DPF itself makes its availability low and reduces user experience

Method used

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  • Method and system for improving availability of DB2 DPF
  • Method and system for improving availability of DB2 DPF

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Embodiment Construction

[0038] Below will combine the embodiment of the present invention Attached picture , clearly and completely describe the technical solutions in the embodiments of the present invention, obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0039] The embodiment of the present invention discloses a method for improving the usability of DB2DPF, which is applied to DB2DPF. DB2DPF includes N nodes, where N is an integer not less than 2; see figure 1 As shown, the method includes:

[0040] Step S101: Allocate NAS network storage to N nodes, so as to use NAS network storage to store the sqllib control file in DB2DPF.

[0041] It should be noted that in the existing DB2DPF, the sqllib control file is stored on a...

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Abstract

The invention discloses a method for improving the availability of a DB2 DPF. The method is used for the DPF including N nodes and comprises steps of: allocating NAS network storage to the N nodes in order that a sqllib control file in the DPF is stored in the NAS network storage; creating M failed resource sets; dividing the N nodes into M groups; configuring partition resources corresponding to M groups of nodes to the M failed resource sets one to one; and when any one of the N nodes is faulted, transferring the failed resource set corresponding to the faulted node to any other normally-operating node. An application of a client may acquire the partition resource corresponding to the faulted node by accessing the node provided with the failed resource set corresponding to the faulted node, thereby guaranteeing that data service can be still normally provided for an external unit when a single node is faulted and improving the availability of DPF.

Description

Technical field [0001] The invention involves the field of database technology, which especially involves a method and system for improving the availability of DB2DPF. Background technique [0002] DB2 is a set of relational database management system developed by IBM, which can be applied to a variety of operating systems.DPF (DPF, that is, DataBasePartitation Feature, database partition characteristics) is a multi -zone database of DB2. It can divide a large database into multiple database partitions. Different database partitions can run under different nodes and use the non -shared architecture mode., Enable multiple database partitions of DPF to use parallel work loads to handle workloads. [0003] However, when any node in DPF fails, because the DPF uses a non -shared architecture mode, the client's application cannot access the partition data under the fault node.question.It can be seen that the problem of single -point failure in DPF itself makes it lower available and re...

Claims

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Application Information

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IPC IPC(8): H04L12/24H04L1/22
Inventor 段利宁
Owner INSPUR BEIJING ELECTRONICS INFORMATION IND
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