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Trying to Import an Application MDS Data: TypeError: unsupported operand type(s) for +: 'NoneType' and 'str' (Doc ID 1556978.1)

Last updated on JANUARY 07, 2021

Applies to:

Oracle WebCenter Portal - Version and later
Information in this document applies to any platform.


Trying to import MDS data to an application using Enterprise Manager (EM) or WLST importMetadata function fails.

a) From Enterprise Manager, the following java.lang.Exception occurs:

at oracle.sysman.emas.model.j2eeApplication.admin.ConfigureMDSConnectionsModel.doImportTransfer(

Caused by: weblogic.rmi.extensions.RequestTimeoutException: RJVM response from 'weblogic.rjvm.RJVMImpl@6e08e0ca - id: '<ID>:<IP_ADDR>:[<PORT>,<PORT>,-1,-1,-1,-1,-1]:<DOMAIN>:<MANAGED_SERVER>' connect time: '<TIMESTAMP>'' for 'invoke(;Ljava.lang.String;Ljava.rmi.MarshalledObject;[Ljava.lang.String;;)' timed out after: 30000ms.

b) Using WLST, the following error message occurs:

wls:/<DOMAIN>/serverConfig> importMetadata(application='<APP_NAME>',server='<MANAGED_SERVER>',fromLocation='/tmp/exportMDS/test_MDS')
Location changed to domainRuntime tree. This is a read-only tree with DomainMBean as the root.

For more help, use help(domainRuntime)

Executing operation: importMetadata.

Traceback (innermost last):
 File "", line 1, in ?.
 File "/software/middleware/product/11.1.1/oracle_common/common/wlst/", line 268, in importMetadata
 File "/software/middleware/product/11.1.1/oracle_common/common/wlst/", line 733, in executeAppRuntimeMBeanOpe ration
 File "/software/middleware/product/11.1.1/oracle_common/common/wlst/", line 995, in saveStackAndRaiseExceptio n
TypeError: unsupported operand type(s) for +: 'NoneType' and 'str'




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