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Multiple Singleton Instances in Ear Deployment with WebLogic Server 10.3 (Doc ID 1127439.1)

Last updated on FEBRUARY 12, 2024

Applies to:

Oracle WebLogic Server - Version 10.3 and later
Information in this document applies to any platform.


When you don't specify any custom classloader hierarchy in your 'weblogic-application.xml' descriptor and instead rely on the standard classloader hierarchy you might notice the below issue.
The singleton class is being instantiated multiple times from separate EJB modules despite appropriate synchronization.


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