Storage of dynamic attributes in tango database

I agree with Gwen.
Your stack trace show a timeout during a command_inout (client side)
May be it is a command_inout on the database device ?

As you mentioned, it is correct we have a device server which is connected to another device server. When we tried to create dynamic attribute using command_inout() it is throwing communication timeout.
Additionally we have observed one issue in our code, previously return type of the tango command to create dynamic attribute was Boolean. We tried changing it to void and now we did not observe communication timeout error. So we are continuing with this implementation rather than returning any value from tango command.

Thank you for your extended help.

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