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A heterogeneous disaster recovery device and method for oracle Exadata all-in-one machine

An all-in-one machine and disaster recovery technology, which is applied to the generation of response errors, error detection of redundant data in calculations, instruments, etc., can solve the work of limiting data analysis and reuse, and the low utilization rate of remote disaster recovery systems and other issues to achieve the effect of releasing the lock-in of a single manufacturer, saving costs, and improving RTO

Active Publication Date: 2019-07-26
SHANGHAI DRAGONNET TECH
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Problems solved by technology

[0005] The implementation of disaster recovery from Exadata all-in-one machine to Exadata all-in-one machine has resulted in users being locked out of Oracle's business. Not only is the utilization rate of the remote disaster recovery system very low, but Oracle is also restricting system management and capacity expansion.
At the same time, it greatly limits the work of data analysis and reuse in non-Oracle environments

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Embodiment Construction

[0040] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is carried out on the premise of the technical solution of the present invention, and detailed implementation and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

[0041] Such as figure 1 It shows the data storage form when Oracle uses hybrid column compression. Oracle's hybrid column compression technology actually combines the high compression ratio of column compression and the access characteristics of row database, combining the advantages of both. Oracle proposed the concept of Compression Unit (CU). In a CU, it is a column-based storage method that uses column compression, but a CU stores all the field information of a row, so between CU and CU, Oracle still For a row-based database, access to a row is always only in one CU. Each CU is ...

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Abstract

The invention relates to a heterogeneous disaster-tolerance apparatus and method for an Oracle Exadata integrated machine. The apparatus comprises a storage node that reads a data block stored in a disk and transmitted by DataGuard, a CU (Compression Unit) decompression component that analyzes the data block read by the storage node, a calculation node that performs calculation replaying on the processed data to realize disaster tolerance, and a data transmission network that realizes communication between the calculation node and the CU decompression component. The method comprises the steps that the calculation node requests for data from the storage node through the data transmission network; the storage node reads the data block stored in the disk; the CU decompression component judges whether the data block is a compressed data block or not, and performs decompression recovery if yes or directly transmits the data block to the calculation node through the data transmission network if not; and the calculation node performs the calculation replaying on the received data block to realize the disaster tolerance. Compared with the prior art, the apparatus and the method have the advantages of automatic decompression, low hardware platform dependence, flexible use of disaster tolerance data, high RTO (Recover Time Objective) after disaster tolerance, and the like.

Description

technical field [0001] The invention relates to application disaster recovery for Oracle databases, in particular to a heterogeneous disaster recovery device and method for Oracle Exadata all-in-one machines. Background technique [0002] The introduction of the Oracle Data Guard concept is to improve the high availability of Oracle applications, by transferring Oracle's archivelog and redolog to the target machine, and replaying the logs on the target machine to achieve local or remote disaster recovery of the Oracle database. Oracle Exadata appliance integrates Hybrid Columnar Compression (HCC). This compression mechanism has a good balance between space and performance, but it also makes the compressed data must be decompressed through the Exadata platform before it can be accessed. If a non-Exadata architecture is used to implement Exadata Data Guard disaster recovery, the compressed data after the Data Guard role switch must be manually decompressed before it can be acc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F11/14
CPCG06F11/1448G06F11/1464
Inventor 游录金彭俊杰焦圣品叶磊孙洪标钱忠宝
Owner SHANGHAI DRAGONNET TECH
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