jenkins@ip-172-31-4-164:~$ (jvmSelect openjdk 8; java -Xshare:on -version)
Java home: /usr/lib/jvm/java-1.8.0-openjdk-amd64
openjdk version "1.8.0_111"
OpenJDK Runtime Environment (build 1.8.0_111-8u111-b14-2ubuntu0.16.04.2-b14)
OpenJDK 64-Bit Server VM (build 25.111-b14, mixed mode, sharing)
jenkins@ip-172-31-4-164:~$ (jvmSelect oracle 6; java -Xshare:on -version)
Java home: /usr/lib/jvm/java-6-oracle-amd64
An error has occurred while processing the shared archive file.
Specified shared archive not found.
Error occurred during initialization of VM
Unable to use shared archive.
jenkins@ip-172-31-4-164:~$ (jvmSelect oracle 6; java -Xshare:dump -version)
Java home: /usr/lib/jvm/java-6-oracle-amd64
Loading classes to share ... done.
Rewriting and unlinking classes ... done.
Calculating hash values for String objects .. done.
Calculating fingerprints ... done.
Removing unshareable information ... done.
Moving pre-ordered read-only objects to shared space at 0x00007f862b000000 ... done.
Moving read-only objects to shared space at 0x00007f862b53bd58 ... done.
Moving common symbols to shared space at 0x00007f862b53e2e0 ... done.
Moving remaining symbols to shared space at 0x00007f862b644520 ... done.
Moving string char arrays to shared space at 0x00007f862b645d58 ... done.
Moving additional symbols to shared space at 0x00007f862b703eb8 ... done.
Read-only space ends at 0x00007f862b784790, 7882640 bytes.
Moving pre-ordered read-write objects to shared space at 0x00007f862ba00000 ... done.
Moving read-write objects to shared space at 0x00007f862c610208 ... done.
Moving String objects to shared space at 0x00007f862c688540 ... done.
Read-write space ends at 0x00007f862c6fd638, 13620792 bytes.
Updating references to shared objects ... done.

An error has occurred while processing the shared archive file.
Unable to create shared archive file /usr/lib/jvm/jdk1.6.0_45/jre/lib/amd64/server/classes.jsa.
Error occurred during initialization of VM
Unable to use shared archive.
jenkins@ip-172-31-4-164:~$ Connection to jenkins-worker-behemoth-1 closed by remote host.
Shared connection to jenkins-worker-behemoth-1 closed.