What's new in Dynatrace OneAgent 1.333

Release notes
7-min read
Rollout start on Mar 10, 2026

This page showcases new features, changes, and bug fixes in Dynatrace OneAgent version 1.333. It contains:

Feature updates: 12
Breaking changes: 1
Fixes and maintenance: 24 (vulnerabilities: 1)

Application Observability | Log Analytics

Monitor state and health of Log modules using self-monitoring events

The Dynatrace Log module now provides environment-wide self-monitoring features. You get:

Faster detection and resolution of Log module issues across distributed environments.
Centralized visibility for OneAgent and Kubernetes Log modules in a single view.
Self-service troubleshooting for common issues, which reduces support effort.

For details, see Implement Log module self-monitoring.

To use self-monitoring features, you need:

A Dynatrace SaaS environment with Grail.
Log Analytics on your rate card.
Log ingestion: Ingest logs via OneAgent or Dynatrace Operator.

New features include:

Environment-wide self-monitoring for OneAgent and Kubernetes log modules.
New event categories for log source status and health-related events.
Events are stored in Grail and can be queried via DQL.
A pre-made dashboard that lets you monitor module health and detected log source status, and provides links to troubleshooting guides.

Log module self-monitoring events dashboard

For assistance during any phase of the release, open a support ticket or consult the troubleshooting guide linked in the dashboard.

The functionality requires Log Management and Analytics powered by Grail, with support for OneAgent and Dynatrace Operator deployment modes enabled by the schema ID builtin:logmonitoring.log-sfm-settings. It is disabled by default and can be manually activated via the Settings API.

Oldest supported versions

With this release, the following are the oldest supported OneAgent versions.

Support level	Oldest supported version
Standard Support	1.315
Enterprise Success and Support	1.309

For details, see How long are versions supported following rollout?.

Feature updates

Application Observability | Distributed Tracing

New automatic instrumentation for AWS Lambda in Go

We added new AWS Lambda layers for automatic Go instrumentation (tracing, log correlation). The new support includes the generic AWS SDK and SNS.

Application Observability | Distributed Tracing

Support for Spring Boot 4.0 and Spring Framework 7.0

OneAgent now supports Spring Boot 4.0 and Spring Framework 7.0 versions.

Application Observability | Distributed Tracing

Automatic span suppression for OpenTelemetry in Node.js code module

We have introduced automatic suppression of OpenTelemetry spans based on the OpenTelemetry instrumentation library name. If a OneAgent sensor is available that instruments the same library as the OpenTelemetry instrumentation, OpenTelemetry spans are automatically suppressed to avoid double tracing. For a list of OpenTelemetry instrumentation libraries affected by this behavior, see Prevention of span duplication in Node.js.

Application Observability | Log Analytics

Added detection of a plain IIS configuration

We've introduced the Detection of a plain IIS configuration feature that enables OneAgent to assign logs to the appropriate IIS application pools unambiguously.

When the feature is activated, OneAgent verifies whether the IIS setup is complex or plain. A plain configuration means that a single application pool is assigned to a single site, and there is no central log shared across the entire IIS instance.

The plain configuration assigns logs to the processes of individual pools instead of assigning all logs to a single IIS process.

To activate the Detection of a plain IIS configuration feature:

Latest Dynatrace: Go to Settings > Collect and capture > Log monitoring > Log module feature flags, and turn on Detection of a plain IIS configuration.
Classic Dynatrace: Go to Settings > Log monitoring > Log module feature flags, and turn on Detection of a plain IIS configuration.

Digital Experience | RUM Web

RUM JavaScript Classic allows you to resume automatic page detection

You can now call dtrum.enableAutomaticPageDetection to restore automatic page detection after using manual page detection.

Infrastructure Observability | Azure

OneAgent integration for Azure App Service on Linux via sidecar pattern

We have added a new integration option to monitor Azure App Service on Linux using the sidecar pattern. This provides a simplified integration with code-only and custom container deployments.

Platform

Added support for Fedora 43

We have added support for Fedora 43.

Platform

Added support for Debian 13

We added support for Debian 13, where /etc/sysctl.conf is no longer used and has been replaced with /usr/lib/sysctl.d/50-default.conf (from the linux-sysctl-defaults package) and local snippets in /etc/sysctl.d/*.conf. Other distributions may follow this pattern. For more details, see Debian 13 release notes, section 5.1.15.

Platform | OneAgent

Support for Redisson Tracing

Tracing support for Redisson is now available, including support for tracing queries and batched queries. To enable this, turn on Java Redisson Redis client. This instrumentation can optionally distinguish between batch operations (turned off by default).

Platform | OneAgent

Support for ES6 modules in Node.js

ES6 modules are now supported in Node.js.

Platform | OneAgent

Support for Vert.x HttpClient and Vert.x WebClient

Tracing support is now available for Vert.x WebClient and HttpClient for versions 3.6+, 4.X, and 5.X.

Platform | OneAgent

Added Python 3.14 distribution for extensions

We have added the Python 3.14 distribution to the OneAgent deployment for extensions.

Breaking changes

Infrastructure Observability | Extensions

Run your extensions with Python runtime version 3.14

Python extensions can now be run with Python 3.14. To enable this, rebuild the extension with the newest Python SDK.

Fixes and maintenance

General Availability (1.333.55.20260317-092136)

Fixed an issue that resulted in incorrectly high alert numbers in certain Process metrics (IO Read/Writes per second, IO Requested Reads/Writes per second, page faults per second). (OA-62263)
The Single Middleware Injection feature now works for .NET 7 and later. In rare cases, this feature is needed to work with certain authenticators. (OA-61437)
Fixed an issue that occasionally triggered availability alerts for non‑existing PGIs. (OA-61378)
Fixed case sensitivity when searching for log level or timestamp attributes in JSON documents. (OA-60996)
Fixed attribute sourcing from SMBIOS System Information (product_serial and sys_vendor) for OneAgent on Linux, ensuring accurate and consistent system metadata reporting. Previously, it used chassis metadata for system.serial and system.vendor, leading to inaccurate system identification. (OA-60568)
Fixed an issue with log inline enrichment not allowing slashes in the attribute names. (OA-60504)
Fixed Go Business Events to take the content length limit into account when capturing plain-text HTTP response bodies. (OA-60131)
Fixed the failure issue in Live Debugger auto source fetching caused by the environment variables. (OA-60121)
The comparison of executable names and paths is now case sensitive. It now allows matching executables with different casing on Linux systems. (OA-60035)
Back and front slashes are now supported for the Process Availability exe path matcher on Windows. (OA-59805)
Fixed retrieval of IIB/ACE message flow node names when node names exceeded 256 characters, which previously resulted in incorrect values. (OA-59765)
The Cloud Detection task now has more time to complete and collect attributes from REST endpoints with the implementation of lazy initialization for the immutable list of resource attributes. Previously, Cloud resource attributes (for example, aws.account.it and aws.region) were missing on spans. (OA-59686)
Fixed zRemote timezone parsing issue when configured for log ingestion. (OA-59582)
Fixed the indefinite growth of the Cassandra PGI name when deployed in Kubernetes pods in certain scenarios. (OA-59467)
We now support detection and tracing for @RestController methods with @PreAuthorize or/and @PostAuthorize annotations for spring-boot-starter-securityversions 2.5+. (OA-59449)
Updated MINTv2 metrics sent from OneAgent to the December 2025 MINTv2 specification update. That update relaxed the requirements for the first character of the dimensions key from ('a'..'z' | 'A'..'Z' | '') to the regex [\x21-\x7E]. Characters previously converted to _ will now remain unchanged. (OA-59395)
Postgres child processes are no longer grouped under the Postgres parent when it's grouped declaratively. (OA-59147)
Fixed the issue with the custom configuration of BizEvents sensor. (OA-59134)
Fixed HTTP request timeouts in Apache Server monitored by OneAgent when a 100‑Continue response was expected and the request body was captured as a Business event. (OA-58446)
Vulnerability: Fixed a vulnerability for OneAgent and ActiveGate Windows installers that could lead to privilege escalation in certain situations. (OA-58439)
Enabled functionality to improve resource attribute enrichment in classicFullStack. (OA-57123)
Fixed possible stack overflow during Go code module crash handling in Go >= 1.21. (OA-56021)
Added support for handling user‑specific settings in RemotePluginModule. (DAQ-21395)
Fixed an issue in SNMP extensions where metrics were reported even when their filtered dimension data was not collected. Metrics are now emitted only when all filtered dimensions are present and meet their defined filter criteria. For details on SNMP filter behavior, see SNMP data source reference. (DAQ-19103)