Hi..
I tried the below code as INSERT INTO sql statement, it was executed, and added, but the program gave the error below and the DART app had been stopped, and single statement after this line had been executed.

same thing happened when I replaced this statement by "DELETE" SQL statement.

  var resultset = oracleConnection.select("INSERT INTO myVendors (vendor_id, vCode, vName,vEmail) values (6,'205','hasan','hasan@hasan-test.com')");
  resultset.next();

Unhandled exception:
Uncaught Error: ORA-24374: define not done before fetch or execute and fetch

Stack Trace:
#0 _OracleResultset.next (package:oracledart/oracledart_synchronous_extension.dart:103:44)
#1 main. (file:///D:/fonixAgile/production/server/web/insert.dart:16:21)
#2 _RootZone.runUnary (dart:async/zone.dart:1082)
#3 _Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:488)
#4 _Future._propagateToListeners (dart:async/future_impl.dart:571)
#5 _Future._complete (dart:async/future_impl.dart:317)
#6 Future.Future. (dart:async/future.dart:118)
#7 Timer._createTimer. (dart:async-patch/timer_patch.dart:12)
#8 _handleTimeout (dart:io/timer_impl.dart:292)
#9 _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:122)
#0 _rootHandleUncaughtError. (dart:async/zone.dart:820)
#1 _asyncRunCallbackLoop (dart:async/schedule_microtask.dart:41)
#2 _asyncRunCallback (dart:async/schedule_microtask.dart:48)
#3 _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:126)