Invention Grant
- Patent Title: Mode switching in high availability disaster recovery (HADR) systems
-
Application No.: US15268651Application Date: 2016-09-19
-
Publication No.: US10255341B2Publication Date: 2019-04-09
- Inventor: Rene Quakkelaar , Elena I. Lora Gallardo
- Applicant: SAP SE
- Applicant Address: DE Walldorf
- Assignee: SAP SE
- Current Assignee: SAP SE
- Current Assignee Address: DE Walldorf
- Agency: Buckley, Maschoff & Talwalkar LLC
- Main IPC: G06F17/30
- IPC: G06F17/30 ; G06F11/14

Abstract:
Various embodiments of systems, computer program products, and methods to provide mode switching in high availability disaster recovery (HADR) systems are described herein. In an aspect, an average commit wait time associated with replicating data from a primary database to a replication database is determined based on a previous average commit wait time and a current commit wait time. A counter is incremented when the average commit wait time is greater than or equal to the predefined maximum commit wait time. Further, a check is made to determine whether the counter is greater than or equal to a predefined threshold and whether a predefined timer associated with the counter is expired. When the counter is greater than or equal to the predefined threshold and the predefined timer is running, the primary database is switched from a synchronous mode to an asynchronous mode for replicating the data.
Public/Granted literature
- US20180081931A1 MODE SWITCHING IN HIGH AVAILABILITY DISASTER RECOVERY (HADR) SYSTEMS Public/Granted day:2018-03-22
Information query