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Asked: 2026-05-13T12:57:58+00:00

Im getting a weird error when running my spring2.5.6,jpa(hibernate3.4) webapp in weblogic 10.3 [ERROR]

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Im getting a weird error when running my spring2.5.6,jpa(hibernate3.4) webapp in weblogic 10.3

[ERROR] Javassist Enhancement failed: com.xxx.domain.model.Scheme
java.lang.NoSuchMethodError: pcGetManagedFieldCount
        at com.xxx.domain.model.Fund.<clinit>(Fund.java)
        at sun.misc.Unsafe.ensureClassInitialized(Native Method)
        at sun.reflect.UnsafeFieldAccessorFactory.newFieldAccessor(UnsafeFieldAc
cessorFactory.java:25)

The com.xxx.domain.model.Scheme class is a mapped subclass entity of the abstract fund entity on a single_table inheritance hierarchy, and I’m getting this error for all entities on the hierarchy. I’m using both annotated classes and xml metadata to define the mappings for my persistence classes.

I only get this error when the app is deployed to weblogic, so everything runs fine using junit. I have tried upgrading to the latest version on javaassit.jar.

Problem Looks to me like an issue with classloading order, but I cant figure it out.

PS. As suggested by bea I have added the following to the weblogic.xml 

<container-descriptor>
  <prefer-web-inf-classes>true</prefer-web-inf-classes>
</container-descriptor>

Anyone got any ideas, other config tips, or directions I should take my investigation?

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1 Answer

  1. Editorial Team

    I had the same problem.

    My entities extended a class (@MappedSuperClass) which lived inside a jar dependency. I had to move that class from the jar into my project. Only then it would work and deployed fine.

    Also another way to solve this is to specify your entities explicitly in the persistence.xml

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