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log4net:ERROR [AdoNetAppender] ErrorCode: GenericFailure. Exception while writing to database
System.NullReferenceException: Object reference not set to an instance of an object.
at Devart.Data.Oracle.c9.a(aq A_0, Int32 A_1)
at Devart.Data.Oracle.c9.a(Int32 A_0, eu A_1)
at Devart.Data.Oracle.OracleCommand.InternalExecute(CommandBehavior behavior, IDisposable disposable, Int32 startRecord, Int32 maxRecords, Boolean nonQuery)
at Devart.Common.DbCommandBase.ExecuteDbDataReader(CommandBehavior behavior, Boolean nonQuery)
at Devart.Data.Oracle.OracleCommand.ExecuteNonQuery()
at log4net.Appender.AdoNetAppender.SendBuffer(IDbTransaction dbTran, LoggingEvent[] events)
at log4net.Appender.AdoNetAppender.SendBuffer(LoggingEvent[] events)