ResetTrans Method

Applies To

Description

Unconditionally rolls back all transactions and clears the transaction mode initiated by BeginTrans method.

Usage

oraconnection.ResetTransorasession.ResetTrans

Remarks

This method does not generate events or produce errors. Because the ResetTrans method does not generate events, you cannot cancel the ResetTrans method in a Validate event, as you can with a rollback or commit operation.

Note: If an OraDatabase object has been enlisted with Microsoft Transaction Server (MTS) and is part of a global MTS transaction, this method has no effect.

Examples

This example demonstrates the use of the BeginTrans and ResetTrans methods to group a set of dynaset edits into a single transaction. Copy and paste this code into the definition section of a form. Then, press F5.

Sub Form_Load ()
 
'Declare variables 
 Dim OraSession As OraSession 
 Dim OraDatabase As OraDatabase 
 Dim OraDynaset As OraDynaset 
 
'Create the OraSession Object.
Set OraSession = CreateObject("OracleInProcServer.XOraSession")
 
'Create the OraDatabase Object by opening a connection to Oracle.
Set OraDatabase = OraSession.OpenDatabase("ExampleDb", "scott/tiger", 0&)
'Create the OraDynaset Object.
Set OraDynaset = OraDatabase.CreateDynaset("select * from emp", 0&)
 
 'Start Transaction processing.
 OraDynaset.Session.BeginTrans
 
 'Traverse until EOF is reached, setting each employee's salary to zero.
 Do Until OraDynaset.EOF
   OraDynaset.Edit
   OraDynaset.Fields("sal").value = 0
   OraDynaset.Update
   OraDynaset.MoveNext
 Loop
 MsgBox "All salaries set to ZERO."
 
 'Currently, the changes have NOT been committed to the database.
 'End Transaction processing.
 'Using ResetTrans means the rollback cannot be canceled in the Validate event.
 OraDynaset.Session.ResetTrans
 MsgBox "Salary changes rolled back."
 
End Sub