JVM heap size issue in openjdk 8.

[Ben Evans]

On Wed, 18 Sep 2019 at 00:48, Andrew Haley <aph at redhat.com> wrote:
>
> On 9/17/19 3:43 PM, Pandit (EXT), Vijay wrote:
>
> > Due to some change in Siemens policy I need to use Oracle Open JDK 8.
>
> As the leader of the OpenJDK 8 updates project, I advise you not to do
> this.
>
> Even if you could find it, the original Oracle OpenJDK 8 release would
> be too old to use. It is buggy and has security vulnerabilities. For
> the sake of your organization, I urge you to contact whoever is
> responsible for the above policy and encourage them to reconsider.

I suspect that this is more likely to be a confusion over the term
"Oracle OpenJDK 8".

Vijay - Modern releases of Java (from 9 onwards) have been released as
"Oracle OpenJDK <version>".

However, the product that Oracle shipped as Java 8 was not open
source. It was a proprietary binary built from the OpenJDK source
code. So instead of "Oracle OpenJDK 8", it is just called "Oracle JDK
8".

So you have a choice - you can either use Oracle JDK 8 or OpenJDK 8.
If you want to use Oracle JDK 8, you should contact your Oracle rep
(or look for an old, unsupported version online).

For OpenJDK you have a choice of vendors who can supply you with free
binaries that will be updated regularly for the next 4+ years. A
popular choice is AdoptOpenJDK - the binaries can be downloaded from
here: https://adoptopenjdk.net/

Thanks,

Ben
PS: Oracle did produce an open-source binary, the "reference
implementation", but this was part of the original release, back in
2014. It has never been updated and is certainly not suitable for
production use.