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Attempting to Start Nodemanager Returns Message: The Node Manager cannot run as there is no topology. (Doc ID 2014881.1)

Last updated on OCTOBER 07, 2022

Applies to:

Oracle API Gateway - Version and later
Information in this document applies to any platform.


There is a need to restore the file system for OAG.  After doing this successfully, it is possible to start the Gateway instances as well as OAG Analytics.

$OAG_HOME/apigateway/posix/bin/startinstance -n "<GATEWAY NAME>" -g "<GROUP NAME>" -d
$OAG_HOME/oaganalytics/posix/bin/oaganalytics -d

However, Node Manager will not start.

On executing $OAG_HOME/apigateway/posix/bin/nodemanager -d following error was encountered:

$> $OAG_HOME/apigateway/posix/bin/nodemanager -d

com.vordel.dwe.NonRecoverableException: The Node Manager cannot run as there is no topology. Run managedomain to initialize topology.
at com.vordel.nm.NodeManager.load(
at com.vordel.precipitate.SolutionPack.loadModule(
at com.vordel.precipitate.SolutionPack.loadModules(
at com.vordel.dwe.Service.refresh(
at com.vordel.dwe.Service.(


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