Invention Grant
- Patent Title: Parallel load of mapping containers for database system start and restart operations
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Application No.: US16883241Application Date: 2020-05-26
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Publication No.: US11429388B2Publication Date: 2022-08-30
- Inventor: Dirk Thomsen , Thorsten Glebe , Tobias Scheuer , Werner Thesing , Johannes Gloeckle
- Applicant: SAP SE
- Applicant Address: DE Walldorf
- Assignee: SAP SE
- Current Assignee: SAP SE
- Current Assignee Address: DE Walldorf
- Agency: Mintz Levin Cohn Ferris Glovsky and Popeo, P.C.
- Main IPC: G06F9/30
- IPC: G06F9/30 ; G06F16/28 ; G06F9/38 ; G06F9/54

Abstract:
Aspects of the current subject matter are directed to an approach in which a parallel load operation of file ID mapping containers is accomplished at start and/or restart of a database system. Parallel load operation of file ID mapping and/or large binary object (LOB) file ID mapping is done among a plurality of scanning engines into a plurality of data buffers that are associated with each of the plurality of scanning engines. Each scanning engine operates on a certain path of a page chain of a page structure including the mapping, causing the page chain to be split among scanning engines to process maps. Contents of the data buffers are pushed to mapping engines via a queue. The mapping engines load the file ID mapping and the LOB file ID mapping into maps for in-system access.
Public/Granted literature
- US20210373893A1 PARALLEL LOAD OF MAPPING CONTAINERS FOR DATABASE SYSTEM START AND RESTART OPERATIONS Public/Granted day:2021-12-02
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