When connecting to an external Oracle database with Integration Runtime (5.9.7949.2) the following error pops up after trying to copy data in the Azure Data Factory:
ErrorCode=UserErrorFailedToConnectOdbcSource,'Type=Microsoft.DataTransfer.Common.Shared.HybridDeliveryException,Message=ERROR [08S01] [Microsoft][ODBC Oracle Wire Protocol driver]Socket closed.
ERROR  [Microsoft][ODBC Oracle Wire Protocol driver][Oracle]Connection Dead.,Source=Microsoft.DataTransfer.ClientLibrary.Odbc.OdbcConnector,''Type=System.Data.Odbc.OdbcException,Message=ERROR [08S01]
This Integration Runtime worked perfectly before and suddenly stopped working. At the Oracle database side, no settings were changed. At our side, we did not change settings either. The Integration Runtime is still running in the Data Factory.