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h5. 404 Not Found

The requested resource does not exist

It can occur that after restarting your system, although you see that the J2EE instance is running:

you are not able to access any webdynpro or portal application, receiving the error message:

404 Not Found

The requested resource does not exist 

If you then check the status of the application you will see that the application you want to access is stopped. 

The status of the application can be checked the following way:

list_app   grep  <application name>

If you try to start the application you will see that it is not possible because the application has hard reference to tcwddispwda which is not active on the server. You can see it in the server defaulttrace:

+#Operation startApp over application sap.com/XXXXXXX  finished with errors on server ++sap.com/XXXX..deploy.exceptions.ServerDeploymentException:  (ERROR CODE DPL.DS.5035)  +Application sap.com/XXXX  cannot be started

+,…                                                                    </p><p>Caused by:</p><p>com.sap.engine.services.deploy.exceptions.ServerDeploymentException:</p><p>* (ERROR CODE DPL.DS.5035)* Application sap.com/tcwdapi cannot be started. Reason: it has hard reference to resource tcwddispwda with type application, which is not active on the server.        </p><p>             +                                                                       

The WD-RUNTIME contains the core webdynpro components. These seem to be missing in the landscape.  Therefore, in order to solve this situation it is necessary to redeploy the latest patches of WD-RUNTIME. After that tcwddispwda should be active on the server and the applications should start.     

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