That one has been asked/answered before. https://lists.apache.org/thread/dcby4gqbt0wm469dowqskmk0y3gcp9mj
You will have to stick with a mysql driver until Guacamole supports tomcat 10 Vincent ________________________________ From: Philippe MARASSE via user Sent: Thursday, June 18, 2026 14:57 To: [email protected] Cc: Philippe MARASSE Subject: 1.6.0 with mariadb database not working after upgrade Folks, I'm upgrading my test platform of guacamole from 1.4.0 to 1.6.0, native installation on Debian trixie with tomcat 9.0. Relevant properties used in guacamole.properties are : #mysql-driver: mariadb <= Inactive or not does not matter mysql-hostname: dbserver.example.com mysql-port: 3306 mysql-database: guac-telem mysql-username: <user> mysql-password: <password> I'm using mariadb-java-client-3.5.9.jar connector/J in lib subdirectory (it was 2.7.0 before, and it seems to work with this version) MariaDB is recognized in the log : 2026-06-18 15:40:49,175 [main] INFO o.a.g.auth.mysql.conf.MySQLEnvironment - Installed JDBC driver for MySQL/MariaDB detected as "MariaDB Connector/J" But JDBC URL is not correct for mariadb anymore : ### Cause: java.sql.SQLException: No suitable driver found for jdbc:mysql://dbserver.example.com:3306/guac-telem I think recent MariaDB Connector/J does not register "mysql" anymore, URL should be jdbc:mariadb://dbserver.example.com:3306/guac-telem instead. (full log attached) Regards. -- Philippe MARASSE Responsable des Infrastructures réseaux, systèmes Linux et RSSI technique Direction des Finances et du Numérique Centre Hospitalier Henri Laborit - Bâtiment Administratif entrée N°20 CS 10587 - 370 avenue Jacques Cœur 86021 Poitiers Cedex Tel : 05.49.44.57.19 IT Solutions Email Disclaimer - The information contained in this email message, including any files transmitted with it, is confidential and may be legally privileged. This e-mail is intended only for the personal attention of the stated addressee(s). Any access to this email, including any files transmitted with it, by any other person is unauthorised. If you are not an addressee, you must not disclose, copy, circulate or in any other way use or rely on the accuracy or completeness of the information contained in this email or any files transmitted with it. If you have received this email in error, please inform the sender immediately and delete it and all copies from your system. You may not forward this email without the permission of the authorised sender. The views expressed in this email are those of the author, and do not necessarily represent the views of IT Solutions or its affiliates. Internet communications are not secure and IT Solutions cannot therefore accept legal responsibility for the contents of this message nor for any damage caused by viruses. This email has been scanned at the originating end. For further information on IT Solutions visit https://www.itsolutions.ie
