System.OverflowException:Arithmetic operation resulted in an overflow

[Shalex]

Could you provide any information on what is the root cause of the exception and how did solve the issue?

There was a bug in the provider. We have fixed it.

JIC
When oracleCommand.FetchSize=0, a value of FetchSize will be determined automatically (for better performance) and it will be changed dynamically when executing read operations. The least amount of memory consumed with oracleCommand.FetchSize=1. For more information about the FetchSize property, refer to https://www.devart.com/dotconnect/oracl ... hSize.html.