These release notes relate to Dynatrace Managed specific changes. To learn about general Dynatrace changes included in this Dynatrace Managed release, see:
Suse LES 12.3 operating system is no longer allowed to install new cluster nodes. Dynatrace Managed version 1.258 will be the last one that you can upgrade to this operating system.
Debian 9 operating system is no longer allowed to install new cluster nodes. Dynatrace Managed version 1.260 will be the last one that you can upgrade to this operating system.
New features and enhancements
Cluster resilience improvements
To prevent a data loss in case of a severely undersized disk for Transaction and Session Replay storage, the cluster node will disable OneAgent traffic on itself and will no longer accept incoming data. For example, this might be a result of a disk size misconfiguration. At startup, the cluster node won't be able to start successfully. You'll receive a dedicated cluster event when such a situation happens.
To improve the resilience of cluster nodes replication between DCs, a cluster node will not start if data synchronization hasn't been finished. The procedure of data replication for Premium High Availability deployments has been updated.
Operating systems support
Future Dynatrace Managed operating systems support changes
The following operating systems will no longer be supported starting 01 July 2025
Fixed broken Security Problem (creation/update/resolve) when the QueryTooLargeException occurs due to the default index statistics. (RSA-7178)
Cluster
Fixed an issue where mobile key user actions were not shown on the User action details page. (APM-391209)
Fixed an issue in which RUM JavaScript binaries were not delivered to the OneAgent OS module. (RUM-8441)
Fixed failure of uploading of android symbol files (zip) in some environments. (RUM-8367)
Fixed an issue with manual problem close, which was reopened immediately afterward. (DAVIS-2852)
Resolved an error, where the TopX operation for mobile metrics did not return the correct order of app version. This issue only occurred for app versions that don't contain at least major.minor.revision versioning. (RUM-8550)
Cluster Management Console
Fixed the group list page in case there are thousands of groups and environments/management zones. (APM-391883)
Update 113 (Build 1.256.113)
This cumulative update contains 1 resolved issue and all previously released updates for the 1.256 release.
Application Security
Fixed broken Security Problem (creation/update/resolve) when the QueryTooLargeException occurs due to the default index statistics. (RSA-7178)
Update 115 (Build 1.256.115)
This cumulative update contains 1 resolved issue and all previously released updates for the 1.256 release.
test automation
Updated the required OneAgent version for the OneAgent Response Encoding feature, so the OneAgent version contains the fix for the crash observed on the windows systems running on Intel Core CPUs. (OA-11307)
Update 119 (Build 1.256.119)
This cumulative update contains 1 resolved issue and all previously released updates for the 1.256 release.
Cluster
Fixed a problem where irrelevant tags and MZs are resolved for events and problems. This reduces the spam of false positive notifications. (DAVIS-3011)
Update 125 (Build 1.256.125)
This cumulative update contains 27 resolved issues and all previously released updates for the 1.256 release.
The API response for Kubernetes clusters related entities of third-party vulnerabilities will not return duplicate entities; `HOST` entities have priority over `KUBERNETES_NODE` entities. (CASP-18329)
Cluster
Kubernetes entity pages display tags in the header. (APM-391375)
Improved performance of the Monitoring overview page for hosts by reducing the number of HTTP requests to the server for data. (DMX-2367)
Fixed problem with events possibly losing management zone assignments if the management zones of entities/metrics changed. (DAVIS-2577)
Resolved issue where, in rare cases (when OneAgents were unusually out of sync with server time), process restart events were lost. (DAVIS-2651)
Fixed a missing problem card after it was merged with an unrelated problem card. (DAVIS-2675)
Fixed an issue where mobile key user actions were not shown on the User action details page. (APM-391209)
Fixed an issue in which RUM JavaScript binaries were not delivered to the OneAgent OS module. (RUM-8441)
Fixed a problem causing users with correct permissions to not be able to create calculated service metrics via multidimensional analysis screen. (TI-3922)
Improved formatting/display of log details sidebar for small screens. (APM-389992)
Event properties in the scope `deployment` can now be used. Previously, we exported event properties in the scope `deployment` as writable, but they were not actually writable. This was noticeable mostly when ingesting events via the REST API or via Log events. (DAVIS-2645)
Fixed the Topping algorithm logic where chart data points for threads could be missing on case a thread is not always one of the top threads during analysis iterations. (TI-4074)
For process metrics on AIX hosts, changed default aggregation from average to sum. (HOST-1622)
The Log details panel no longer displays a `Topology` section when related data is unavailable. (APM-389709)
Fixed an issue with manual problem close, which was reopened immediately afterward. (DAVIS-2852)
Updated the command in the "Build and run your app" step of the React Native instrumentation wizard. Now it's `npx instrumentDynatrace`. (RUM-8064)
For process metrics on Windows hosts, changed default aggregation from average to sum. (HOST-1598)
Resolved an error, where the TopX operation for mobile metrics did not return the correct order of app version. This issue only occurred for app versions that don't contain at least major.minor.revision versioning. (RUM-8550)
Fixed problem with security policies for classic role-based permissions for management zones. Resolves issue in which sign-in failed for users with multiple permissions for the same management zone via security policies. (APM-390356)
Fixed problem causing server error (`Application exception` page) when expanding a log record row. (APM-389330)
Fixed fields query parameter for custom devices and generic entities in the GET an entity API request. (APM-390364)
Fixed 500 internal server error in api/v1/problems/feed REST API for some rare entity types within problems. (DAVIS-2579)
Fixed a "You don't have permission to view this page." error when attempting to view the Services page after viewing a Problem card (selected Management zone is not accessible for problem event). (TI-3796)
Cluster Management Console
Fixed the group list page in case there are thousands of groups and environments/management zones. (APM-391883)
oda
Fixed the thread pool used for on-demand analysis and the task framework that made the UI unusable. (CLUSTER-3738)
Fixed an issue where users on the cluster are unable to load the user sessions page. (CLUSTER-3284)
Fixed the thread pool used for on-demand analysis and the task framework that made the UI unusable. (CLUSTER-3738)
Update 141 (Build 1.256.141)
This cumulative update contains 4 resolved issues and all previously released updates for the 1.256 release.
Added configurable limit for the number of top dimensions in multidimensional analysis view. (TI-4678)
Fixed filtering on entity lists and entity details screens. (TI-4624)
Fixed a page crash appearing when a user lacking permission opens the Dynatrace environment page. (DAVIS-3036)
RUM
Fixed single value visualization of USQL. (APM-392812)
Update 144 (Build 1.256.144)
This cumulative update contains 1 resolved issue and all previously released updates for the 1.256 release.
Cluster
Fixed extracting generic entities from event metadata that was unintentionally disabled for Dynatrace Managed deployments. The feature is now available. (DAVIS-3137)
Update 146 (Build 1.256.146)
This is a cumulative update that contains all previously released updates for the 1.256 release.
Update 147 (Build 1.256.147)
This cumulative update contains 1 resolved issue and all previously released updates for the 1.256 release.
Cluster
Fixed an issue with a problem notification tags placeholder not supporting contextual tags. (DAVIS-3207)
Update 163 (Build 1.256.163)
This cumulative update contains 1 resolved issue and all previously released updates for the 1.256 release.
Cluster
We fixed an issue for Managed Multi-DataCenter failover handling where the event/problem handling could get stuck. (DAVIS-3625)