Invention Grant
- Patent Title: Planned cluster node maintenance with low impact on application throughput
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Application No.: US14337067Application Date: 2014-07-21
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Publication No.: US09679004B2Publication Date: 2017-06-13
- Inventor: Wilson Wai Shun Chan , Tolga Yurek , Tak Fung Wang
- Applicant: Oracle International Corporation
- Applicant Address: US CA Redwood Shores
- Assignee: Oracle International Corporation
- Current Assignee: Oracle International Corporation
- Current Assignee Address: US CA Redwood Shores
- Agency: Hickman Palermo Becker Bingham LLP
- Agent Daniel D. Ledesma
- Main IPC: G06F17/30
- IPC: G06F17/30

Abstract:
Techniques for taking one or more nodes of a multi-node database system offline are provided. Initially, the multi-node database system uses a first data access management system (e.g., a distributed lock management system) to manage access to data stored in a database. In response to determining that one or more nodes need to be taken offline or otherwise become unavailable, the remaining nodes implement a second data access management system (e.g., an affinity-based access system) to manage access to data stored in the database. After the offline nodes are brought back online, all the nodes in the multi-node database system implement the first data access management system again. The transitions between the two data access management system may involve multiple phases that involve communicating different types of information between nodes that are taken offline and nodes that are not taken offline.
Public/Granted literature
- US20160019253A1 PLANNED CLUSTER NODE MAINTENANCE WITH LOW IMPACT ON APPLICATION THROUGHPUT Public/Granted day:2016-01-21
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