Invention Application
- Patent Title: Delayed Snapshot Isolation for Read Service at a Database
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Application No.: US16576498Application Date: 2019-09-19
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Publication No.: US20200012633A1Publication Date: 2020-01-09
- Inventor: Kyu Hwan Kim , Juchang Lee , Beomsoo Kim , Chang Gyoo Park , Reiner Singer , Christoph Roterring , Werner Thesing , Michael Muehle
- Applicant: SAP SE
- Main IPC: G06F16/23
- IPC: G06F16/23 ; G06F16/245

Abstract:
A computer implemented method is provided comprising receiving a group of transaction logs from a first database, allocating transaction logs from the group of transaction logs to a first queue and to a second queue, generating an end-of-group transaction log indicative of an end of the group of transaction logs, allocating the end-of-group log to the first queue and the second queue; replaying transaction logs from the first queue including the end-of-group transaction log allocated to the first queue, replaying transaction logs from the second queue including the end-of-group transaction log allocated to the second queue; and changing visibility of one or more transactions in response to replaying the end-of-group transaction log allocated to the first queue and the end-of-group transaction log allocated to the second queue. Related apparatus, systems, techniques and articles are also described.
Public/Granted literature
- US11200221B2 Delayed snapshot isolation for read service at a database Public/Granted day:2021-12-14
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