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Recently some of our projects started hanging when publishing to WebSphere 8.0 (tested with 8.0.0.5, 8.0.0.6 and 8.0.0.9), but this doesn't happen all the times.

This is a normal installation details

Installing...
If there are enterprise beans in the application, the EJB deployment process can take several minutes. Do not save the configuration until the process completes.
Check the SystemOut.log on the deployment manager or server where the application is deployed for specific information about the EJB deployment process as it occurs.
ADMA5016I: Installation of ImagesServerEAR started.
ADMA5067I: Resource validation for application ImagesServerEAR completed successfully.
ADMA5058I: Application and module versions are validated with versions of deployment targets.
ADMA5005I: The application ImagesServerEAR is configured in the WebSphere Application Server repository.
ADMA5005I: The application ImagesServerEAR is configured in the WebSphere Application Server repository.
ADMA5081I: The bootstrap address for client module is configured in the WebSphere Application Server repository.
ADMA5053I: The library references for the installed optional package are created.
ADMA5005I: The application ImagesServerEAR is configured in the WebSphere Application Server repository.
ADMA5001I: The application binaries are saved in C:\IBM\WebSphere\AppServer\profiles\AppSrv11\wstemp\92668751\workspace\cells\SRV-CLI-DEVNode11Cell\applications\ImagesServerEAR.ear\ImagesServerEAR.ear
ADMA5005I: The application ImagesServerEAR is configured in the WebSphere Application Server repository.
SECJ0400I: Successfully updated the application ImagesServerEAR with the appContextIDForSecurity information.
ADMA5005I: The application ImagesServerEAR is configured in the WebSphere Application Server repository.
ADMA5005I: The application ImagesServerEAR is configured in the WebSphere Application Server repository.
ADMA5113I: Activation plan created successfully.
ADMA5011I: The cleanup of the temp directory for application ImagesServerEAR is complete.
ADMA5013I: Application ImagesServerEAR installed successfully.
Application ImagesServerEAR installed successfully.
To start the application, first save changes to the master configuration.
Changes have been made to your local configuration. You can: 
•  Save directly to the master configuration. 
•  Review changes before saving or discarding.

But when the deploy hangs, the logs only show this

Installing...
If there are enterprise beans in the application, the EJB deployment process can take several minutes. Do not save the configuration until the process completes.
Check the SystemOut.log on the deployment manager or server where the application is deployed for specific information about the EJB deployment process as it occurs.
ADMA5016I: Installation of ImagesServerEAR started.
ADMA5067I: Resource validation for application ImagesServerEAR completed successfully.

and the CPU goes to 100% on 4 out of the 8 cores.

There isn't anything else logged anywhere.

Any ideas on what can be causing this?

Gonçalo Cardoso
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2 Answers2

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This can be caused by the socalled annotation scanning. WebSphere scans the code for annotations. Depending on the framework you used (and your hardware setup) this can take a while. You could try to speed up annotation scanning. http://wasdynacache.blogspot.de/2012/05/how-to-speed-up-annotation-processing.html

For more log details look in the dmgr logs or in the ffdc logs.

Marcel Friedmann
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Solved this problem by increasing the amount of the HEAP size.

Gonçalo Cardoso
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  • 6