I have encountered this error from one of the many servers hosting my application. Other servers didn't encounter errors of this kind and running without problems.
My system provider said that nearly all of the servers are VM-based including this one which encountered this error. It is the 'youngest' server in deployment. I can get more information as you require.
As the application developer, I am perplexed as I have use JPA and ObjectDB for years now. I could use your assistance in overcoming this problem. Thank you.