Update function not working in vb.net - oracle

Question

Currently I'm develop a system using VB.NET. I have the following query for UPDATE. This query is work when I run in SQL Developer
UPDATE CCS2_TBL_INSPECTION_STANDARD SET CCSEQREVITEM = :CCSEQREVITEM,
CCSREVEFFECTIVEDATE = TO_DATE(:CCSREVEFFECTIVEDATE,'DD/MM/YYYY') WHERE
CCSEQID = :CCSEQID
But when I try applied this query in VB.net, its not work. Actually the flow for this update function is work but when I update the data, it is not working. For example, I want update name from 'Ali' to 'Abu', when I click the update button, there popup windows says that "Update success" but the name is not change to 'Abu', it still 'Ali'. There no error when I execute. Anyone know? Below VB.net code:
Protected Sub editInspectionRev(eqid As String)
Dim xSQL As New System.Text.StringBuilder
xSQL.AppendLine("UPDATE CCS2_TBL_INSPECTION_STANDARD")
xSQL.AppendLine("SET")
xSQL.AppendLine("CCSEQREVITEM = :CCSEQREVITEM, CCSREVEFFECTIVEDATE = TO_DATE(:CCSREVEFFECTIVEDATE,'DD/MM/YYYY')")
xSQL.AppendLine("WHERE CCSEQID = :CCSEQID")
Using cn As New OracleConnection(ConString)
cn.Open()
Dim cmd As New OracleCommand(xSQL.ToString, cn)
cmd.Connection = cn
cmd.Parameters.Add(":CCSEQREVITEM", txtRevContent.Text)
cmd.Parameters.Add(":CCSREVEFFECTIVEDATE", txtRevEffDate.Text)
cmd.Parameters.Add(":CCSEQID", eqid)
cmd.ExecuteNonQuery()
cn.Close()
End Using
success3.Visible = True
DisplayRevisionDetails()
End Sub

Answer 1

The problem is that you have executed the transaction but failed to COMMIT it. There is an example of the correct method here, which I will reproduce in part below for posterity
Using connection As New OracleConnection(connectionString)
connection.Open()
Dim command As OracleCommand = connection.CreateCommand()
Dim transaction As OracleTransaction
' Start a local transaction
transaction = connection.BeginTransaction(IsolationLevel.ReadCommitted)
' Assign transaction object for a pending local transaction
command.Transaction = transaction
...
command.ExecuteNonQuery()
transaction.Commit()
Observe that we have begun the transaction, and then committed it after executing.