SapMachine

This project contains a downstream version of the OpenJDK project. It is used to build and maintain a SAP supported version of OpenJDK for SAP customers and partners who wish to use OpenJDK to run their applications.

We want to stress that this is clearly a “friendly fork”. SAP is committed to ensuring the continued success of the Java platform. SAP is:

• A member of the JCP Executive committee since 2001 and recently served in the JSR 379 (Java SE 9), JSR 383 (Java SE 18.3), JSR 384 (Java SE 11), JSR 386 (Java SE 12), JSR 388 (Java SE 13), JSR 389 (Java SE 14), JSR 390 (Java SE 15), JSR 391 (Java SE 16), JSR 392 (Java SE 17), JSR 393 (Java SE 18), JSR 394 (Java SE 19), JSR 395 (Java SE 20), JSR 396 (Java SE 21) and JSR 397 (Java SE 22) Expert Groups.

• Among the biggest external contributors to the OpenJDK project (see fix ratio for OpenJDK 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22).

• Leading the OpenJDK 17 updates project and heavily supporting the OpenJDK 11 and OpenJDK 21 updates projects.

• Leading the PowerPC/AIX porting project.

• Contributing many new features inspired by Java stakeholders within SAP to the OpenJDK project. This ensures such features are available in long reach and for everybody. Rarely we add such features to SapMachine directly to keep the diff of this project as small as possible.

• Creating tools for developers

  • JFR Event Collection: Information on all JFR events for a specific JDK
  • AP-Loader: AsyncProfiler in a single cross-platform JAR

Downloads

Check out the Download section on https://sapmachine.io.

Documentation

Check out our FAQs and wikipages for information about:

• Installation and Docker Images
• Certifications and Java Compatibility
• SapMachine Development Process

Have an issue?

If it’s SapMachine specific please let us know by filing a new issue.

Please notice that the SapMachine issue tracker is mainly used internally by the SapMachine team to organize its work (i.e. sync with upstream, downporting fixes, add SapMachine specific features, etc.).

General VM/JDK bugs are maintained directly in the OpenJDK Bug System. You can open a SapMachine issue with a reference to an open or resolved OpenJDK bug if you want us to resolve the issue or downport the fix to a specific SapMachine version. If you find a general VM/JDK bug in SapMachine and don’t have write access to the OpenJDK Bug System you can open an issue here and we’ll take care to open a corresponding OpenJDK bug for it.

Every SapMachine release contains at least all the fixes of the corresponding OpenJDK release it is based on. You can easily find the OpenJDK base version by looking at the SapMachine version string.

You can find the Differences between SapMachine and OpenJDK and the Features Contributed by SAP in the SapMachine Wiki.

Contributing

We currently do not accept external contributions for this project. If you want to improve the code or fix a bug please consider contributing directly to the upstream OpenJDK project. Our repositories will be regularly synced with the upstream project so any improvements in the upstream OpenJDK project will directly become visible in our project as well.

License

This project is run under the same licensing terms as the upstream OpenJDK project. Please see the LICENSE file in the top-level directory for more information.