Error: The client has been disconnected from the server

David_Wells

We are getting the following intermittent error when migrating - The client has been disconnected from the server. Please call ManagementGroup.Reconnect() to reestablish the connection. The server did not provide a meaningful reply; this might be a contract mismatch, a premature session shutdown or internal server error.

Is this just our flaky infrastructure or has anyone else hit this error?

The workaround is just to run the migration again, it just picks up from where the failure first starts.

Tony_Collett

That kind of error can point to different issues.
Perhaps your network speed is not enough, so you may need to perform migration in chunks instead of all at once. 
Or the server you are migrating from or to was disconnected briefly due to networking issues (or it simply got shutdown) causing the same interrupt. 

You could try running the migration on a different server that has better performance, or unchecking the Multithreading option and only using Single Core (multithreading is very resource intensive)

Tony_Collett

That kind of error can point to different issues.
Perhaps your network speed is not enough, so you may need to perform migration in chunks instead of all at once. 
Or the server you are migrating from or to was disconnected briefly due to networking issues (or it simply got shutdown) causing the same interrupt. 

You could try running the migration on a different server that has better performance, or unchecking the Multithreading option and only using Single Core (multithreading is very resource intensive)

David_Wells

We put this down to "Network Issues". 

Any news on advancing this as a workaround: https://community.cireson.com/discussion/2025/intermediate-stand-alone-machine-readable-migration-package

Tony_Collett

No updates yet on that. Sorry david