---
title: "Multiple OneSpan Authentication Server instances using ODBC"
slug: "oas-pg-multiple-onespan-authentication-server-instances-using-odbc-3-28"
updated: 2025-07-04T10:04:33Z
published: 2025-07-07T13:57:58Z
canonical: "docs.onespan.com/oas-pg-multiple-onespan-authentication-server-instances-using-odbc-3-28"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.onespan.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Multiple OneSpan Authentication Server instances using ODBC

If more than one OneSpan Authentication Server instance are installed on the system, some additional setup may be required.

If more than one OneSpan Authentication Server instance are using the same ODBC database, no additional setup is required. A backup database should be considered.

![Multiple OneSpan Authentication Server instances using a single database](https://cdn.document360.io/038f59a7-abd0-4c14-9de7-3434d28b49fd/Images/Documentation/Multiple_SRV_Single_DB.png)

Figure: Multiple OneSpan Authentication Server instances using a single database