JPA error in java stored procedure with Oracle 19

User_751MB

We've been using JPA in java stored procedures (using loadjava) for a long time now. The code works in Oracle 12.1 and 12.2 DBs, it works when it's tested in the IDE. In Oracle 19 however we're getting errors whenever the EntityManager tries to access an entity class. The errors are

Unknown entity bean class: class <classname>, please verify that this class has been marked with the @Entity annotation.

or

An exception occurred while creating a query in EntityManager:

Exception Description: Error compiling the query [SELECT f FROM LpsDllparamfile f WHERE f.dllId = ?1]. Unknown entity type [LpsDllparamfile].

It seems, that the entity classes can't be found at runtime. Checking sys.all_objects, the classes are there and they're valid. I would be grateful for any hints about what could cause this problem and how to solve it.

dvohra21

Unknown entity type [LpsDllparamfile].

Is the class name qualified by a package name?

User_751MB

No it's not. What kind of package are you referring to? The classpath? I mean, they're java classes, they don't belong to a PL/SQL package. The class name is addressed by LpsDllparamfile.class.getSimpleName(), which returns LpsDllparamfile.

User_751MB

Using the full classpath to qualify the entity class doesn't solve the issue.