KB-1762 Plugin fails after upgrade to 18.3 with "Unable to find [jdbc]" error in application server log


A plugin that was previously working fails after an upgrade to Appian 18.3, and the following error appears in the Tomcat log:

javax.naming.NameNotFoundException: Name [jdbc/Appian] is not bound in this Context. Unable to find [jdbc].


The plugin is configured to connect to the database using a format that is no longer accepted by Tomcat. For example:


Tomcat does not accept the java:/ prefix in datasource context property.


  1. Unzip the plugin JAR file. 
  2. Search the unzipped plugin files for the problematic datasource context string, java:/jdbc/<DB_Name>. This is often defined in a properties file and referenced in the Java source code.
  3. Remove the java:/ prefix from the property. This change can be made from within archival software, so the JAR does not have to be rebuilt.
  4. Redeploy the plugin. 

Affected Versions

This article applies to Appian 18.3  and later.

Last Reviewed: October 2018