Why do "Oracle JDK 10 builds" not support AppCDS?

[Volker Simonis]

But -XX:+UnlockCommercialFeatures doesn't work either:

./jre-10-ea+43/bin/java -XX:+UnlockCommercialFeatures -XX:+UseAppCDS -version
Error: Trying to use 'UnlockCommercialFeatures', but commercial
features are not available in this VM.

So the commercial features don't seem to be available in the Oracle JDK 10 build


On Thu, Feb 15, 2018 at 7:44 PM, Jiangli Zhou <jiangli.zhou at oracle.com> wrote:
> Hi Volker,
>
> This is intentional for JDK 10. According to the license of Oracle JDK 10,
> the UseAppCDS option requires -XX:+UnlockCommercialFeatures. For OpenJDK,
> UseAppCDS can be enabled without -XX:+UnlockCommercialFeatures. The
> CDS/AppCDS functionality in both Oracle JDK 10 and OpenJDK 10 are identical.
>
> Thanks,
> Jiangli
>
> On Feb 15, 2018, at 7:48 AM, Volker Simonis <volker.simonis at gmail.com>
> wrote:
>
> Hi,
>
> I know that this is an OpenJDK mailing list but maybe this is still
> interesting for some of us :)
>
> I'm a little surprised to see that the "Oracle JDK 10" early access
> builds from http://jdk.java.net/10 do not support AppCDS:
>
> ./jre-10-ea+43/bin/java -version
> java version "10" 2018-03-20
> Java(TM) SE Runtime Environment 18.3 (build 10+43)
> Java HotSpot(TM) 64-Bit Server VM 18.3 (build 10+43, mixed mode)
>
> ./jre-10-ea+43/bin/java -XX:+UseAppCDS -version
> Error: Trying to use 'UseAppCDS', but commercial features are not
> available in this VM.
>
> while the OpenJDK builds do support it:
>
> ./jdk-10/bin/java -XX:+UseAppCDS -version
> openjdk version "10" 2018-03-20
> OpenJDK Runtime Environment 18.3 (build 10+43)
> OpenJDK 64-Bit Server VM 18.3 (build 10+43, mixed mode)
>
> Is this intentional or a mistake? I thought the goal was that Oracle
> and OpenJDK builds should be the same apart from the license under
> which they are provided. AppCDS is on the list of JEPs included in
> OpenJDK 10 and it seems strange if some of them will not be in Oracle
> JDK 10 (until now it was usually t he other way round :)
>
> Regards,
> Volker
>
>