some date in <jta-data-source> cause the persistence unit to silently fail without any meanfull Exception

Sometimes and usually when redeploy application that application can not locate persistent unit.

if have <jta-data-source>java:VeryLongNameWith22Characters</jta-data-source>, cause the persistence unit deployment to silently fail without any meanfull Exception.
The same with <jta-data-source>java:/VeryLongNameWith22Characters</jta-data-source>.

Also problem appear when application is redeploing. Can work before deploy, can not work after deploy.

Solve: restart full server, application and datasource should be placed before restart.

Real solve: use sorter names.