<< Click to Display Table of Contents >> Navigation:  Technical Informations > Database - Dual Database Partial Cross Synchronisation > Purpose of the documentation

When designing a Radio-Assist system, several architectures are possible to provide redundancy and increase system availability.

One of which is the NETIA proprietary dual database model (also referred sometimes as “Double ODBC”).

RadioAssist Systems using NETIA proprietary dual database architecture have a fast and rather seamless failover, however both database servers are subject to content desynchronisation, meaning that the content in one DB will partially differ from the other. This can have several causes, planned or unplanned server outage, network fault, client misconfiguration etc. On large systems it is amplified by the fact that data synchronisation relies on each client to keep the data it interacts with in synch on both servers.

This document describes the method required to implement a partial cross synchronisation between the two databases, working around the most impacting side effect of the desynchronisations.