Release of Daml 2.7.9


This is a maintenance release that addresses several issues.

What’s New

There are several improvements and bug fixes in this release.  

Backported a fix from 2.8 to this release branch which was an issue that occurred when a participant was recovering.  This does not occur with protocol version 5 or higher.

Fixed a JSON API PostgreSQL deadlock that could occur under very heavy load.

Installation or Download

The Daml 2.7.9 SDK has been released. You can install it using the command:  daml install 2.7.9.

The table below lists how you can download Daml Enterprise or individual components.

Daml Enterprise v2.7.9


File download

Docker Image




Canton for Daml Enterprise

Standalone JAR file

Daml Finance

GitHub Page



Standalone JAR file

Trigger Service

Standalone JAR file

OAuth 2.0 middleware (Open-Source)

GitHub Page

Participant Query Store

Standalone JAR file

Trigger Runner

Standalone JAR file

Daml Script

Standalone JAR file

If you are using Oracle JVM and testing security provider signatures, you should note that the provided Canton JAR file embeds the BouncyCastle Provider as a dependency. To enable the JVM to verify the signature, you need to put the “bcprov” JAR on the classpath before the Canton Standalone JAR. For example:

java -cp bcprov-jdk15on-1.70.jar:canton-with-drivers-2.7.9-all.jar com.digitalasset.canton.CantonEnterpriseApp

Note: These Docker images are designed to be minimal in size and attack surface, and are thus suitable for production use. Minimal images can sometimes make debugging difficult (e.g. no shell in the containers). For convenience, we provide “debug” versions of each of the above images, which you can access by appending “-debug” to the image tag (e.g.