INSERTING DATA INTO ORACLE DATABASE

Question

Hi, i have a simple query to insert data from windows form to oracle database. connection is correct and select and delete queries are working. but problem is with insert query Help me plz. Dim conn_obj As New OleDbConnection(conn_str) conn_obj.Open() Dim qur As String = "INSERT INTO EMP(EMPNO, ENAME, JOB, HIREDATE, SAL, SEX) VALUES(@EMPNO, @ENAME, @JOB, @HIREDATE, @SAL, @SEX)" Dim comm_obj As New OleDbCommand(qur, conn_obj) Dim p1 As OleDbParameter Dim p2 As OleDbParameter Dim p3 As OleDbParameter Dim p4 As OleDbParameter Dim p5 As OleDbParameter Dim p6 As OleDbParameter Dim p7 As OleDbParameter Dim p8 As OleDbParameter p1 = comm_obj.Parameters.Add("@EMPNO", OleDbType.Numeric, 4) p1.SourceColumn = "EMPNO" p1.Value = CType(txtId.Text, Integer) p2 = comm_obj.Parameters.Add("@ENAME", OleDbType.VarChar, 10) p2.SourceColumn = "ENAME" p2.Value = txtNam.Text p3 = comm_obj.Parameters.Add("@JOB", OleDbType.VarChar, 9) p3.SourceColumn = "JOB" p3.Value = txtJob.Text p4 = comm_obj.Parameters.Add("@HIREDATE", OleDbType.Date) p4.SourceColumn = "HIREDATE" p4.Value = CType(txtHirDat.Text, Date) p5 = comm_obj.Parameters.Add("@SAL", OleDbType.Decimal, 7) p5.SourceColumn = "SAL" p5.Value = CType(txtSal.Text, Decimal) If radMal.Checked = True Then p6 = comm_obj.Parameters.Add("@SEX", OleDbType.VarChar, 2) p6.SourceColumn = "SEX" p6.Value = "M" ElseIf radFem.Checked = True Then p6 = comm_obj.Parameters.Add("@SEX", OleDbType.VarChar, 2) p6.SourceColumn = "SEX" p6.Value = "F" End If comm_obj.ExecuteNonQuery() conn_obj.Close()