Database load unit for replication log replay

US12282494B1 · kind B1 · utility

Assignee

• SAP SE · DE

Inventors

• Janardhan Hungund · Pune, IN
• Neha Shikha Kachhap · Ranchi, IN
• Jagadeesha Kanihal · Bengaluru, IN
• Sebastian Seifert · Heidelberg, DE
• Bernhard Scheirle · Leimen, DE
• Amit Pathak · Pune, IN
• Werner Thesing · Herbstein, DE
• Thomas Peh · Bukit Mertajam, MY

Key dates

• Filing date: Dec 5, 2023
• Grant date: Apr 22, 2025
• Expiry date: Dec 5, 2043

Classification

• Technology area (CPC G): Physics
• CPC primary: G06F2201/80
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

A primary database system loads database objects into a primary in-memory store according to a given format. The primary database captures, in replay logs, the loading of the database objects according to the given format. The primary database sends the replay logs to a secondary database system. In response to receiving a replay log, the secondary database checks the value of a log replay configuration parameter. If the configuration parameter is a first value, the secondary database replays the replay log to load the corresponding database objects into a secondary in-memory store according to a first format. If the configuration parameter is a second value, the secondary database replays the log to load the objects according to a second format, and if the configuration parameter is a third value, the secondary database replays the log to load the objects in a same format which was used by the primary database.