When Starting Confluence, ConfluenceTrackbackStore Errors are Thrown in Logs
Platform Notice: Data Center Only - This article only applies to Atlassian products on the Data Center platform.
Note that this KB was created for the Data Center version of the product. Data Center KBs for non-Data-Center-specific features may also work for Server versions of the product, however they have not been tested. Support for Server* products ended on February 15th 2024. If you are running a Server product, you can visit the Atlassian Server end of support announcement to review your migration options.
*Except Fisheye and Crucible
Summary
When Starting Confluence, ConfluenceTrackbackStore Errors are thrown in Logs
Environment
Confluence 7.0 and newer
Diagnosis
The following error is found in atlassian-confluence.log during startup.
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2020-09-02 23:51:27,698 ERROR [Catalina-utility-2] [com.atlassian.trackback.TrackbackListenerServlet] init Could not find or create class: com.atlassian.confluence.links.persistence.ConfluenceTrackbackStore from init-param named trackbackStore
java.lang.ClassNotFoundException: com.atlassian.confluence.links.persistence.ConfluenceTrackbackStore
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1365)
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1188)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:264)
at com.atlassian.trackback.TrackbackListenerServlet.init(TrackbackListenerServlet.java:82)Cause
The Trackback feature has been removed starting with Confluence 7.0, per Confluence 7.0 Release Notes.
There is a customization in <confluence-install>/confluence/confluence-WEB-INF/web.xml that is attempting to load Trackback.
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<servlet>
<servlet-name>trackback</servlet-name>
<servlet-class>com.atlassian.trackback.TrackbackListenerServlet</servlet-class>
<init-param>
<param-name>trackbackStore</param-name>
<param-value>com.atlassian.confluence.links.persistence.ConfluenceTrackbackStore</param-value>
</init-param>
<load-on-startup>7</load-on-startup>
</servlet>
...
<servlet-mapping>
<servlet-name>trackback</servlet-name>
<url-pattern>/rpc/trackback/*</url-pattern>
</servlet-mapping>Solution
Remove the trackback lines above from <confluence-install>/confluence/confluence-WEB-INF/web.xml and restart Confluence
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