"This section discusses the query language syntax, as defined in the Java Persistence API 2.0 specification available at http://jcp.org/en/jsr/detail?id=317. Much of the following material paraphrases or directly quotes the specification."
"While migrating from Oracle 11g to Oracle 12 c, we are getting below error using UCP(12.1.0.2.0)" "java.sql.SQLException: The connection is closed: The connection is closed", "This issue should be fixed in 12.2.0.1"