Dynatrace Hub - Tomcat (JMX) latest releases

Tomcat (JMX) 3.1.0

Tue, 11 Aug 2026 07:45:06 +0000

This version requires a minimum Dynatrace version and minimum EEC version of 1.343.0.
This version includes a breaking change for Dynatrace on Grail.
- With the inclusion of OpenPipeline processing rules, any metrics ingested from the extension will be processed by a dedicated OpenPipeline pipeline.
- This means that any dynamic route configured to process any metrics from the extension will be dropped in favor of the dedicated pipeline. Please, refer to pipeline groups to continue using dynamic routes.
- Additionally, some field names are handled differently in OpenPipeline, e.g. capitalization. Please double-check any custom dashboards and alerts you have created for this extension.
- You must opt-in to OpenPipeline configuration via Settings API – see the documentation.

Smartscape on Grail.
Added feature set metadata for recommended metrics.
This extension is now using all rich visualization features of Grail within Infrastructure & Operations App.
Added 13 new metrics for the session manager:
- tomcat.session.activeSessions
- tomcat.session.duplicates
- tomcat.session.expiredSessions.count
- tomcat.session.maxActive
- tomcat.session.maxActiveSessions
- tomcat.session.processExpiresFrequency
- tomcat.session.processingTime.count
- tomcat.session.rejectedSessions
- tomcat.session.sessionAverageAliveTime
- tomcat.session.sessionCounter.count
- tomcat.session.sessionCreateRate
- tomcat.session.sessionExpireRate
- tomcat.session.sessionMaxAliveTime

Wed, 17 Dec 2025 14:29:37 +0000

New in this version:

Thu, 31 Jul 2025 18:47:46 +0000

Fri, 26 Jul 2024 15:30:07 +0000

Includes feature sets and changes for App Server metrics
- Thread pools
- Web requests

Fri, 22 Mar 2024 11:41:00 +0000

Added metrics:
- tomcat.connectionPool.numWaiters
- tomcat.connectionPool.maxTotal
- func:tomcat.connectionPool.currentUsage
Added new charts in UA screens for these metrics

Fri, 01 Mar 2024 14:08:40 +0000

Fix a bug which prevented the extension from being imported in some environments.

Tue, 20 Feb 2024 15:04:39 +0000

Includes support for 'global' data source resources (i.e. Mbeans with no 'host' or 'context' attribute)

Tue, 30 Jan 2024 13:18:01 +0000

Solved a bug where the name dimension was not being ingested correctly, which prevented custom topology entities from being created.

Thu, 24 Aug 2023 13:26:34 +0000

EF1 to EF2 Tomcat Connection Pool conversion:

Add Tomcat connection pool entity and its relation to the tomcat process
Custom unified analysis screen for Tomcat connection pools
Metric chart injection into Process Group Instance screen
Overview dashboard for Tomcat connection pools
Add feature sets to control included metrics
New metric func:tomcat.connectionPool.availableConnections that shows the current available connections
All metrics have changed key from the EF1 version. The prefix builtin:tech.tomcat has been removed. This is a breaking change for any configuration you had which used the metric key, such as metric events.