以下是通過Excel 的VBA連接Oracle并操作Oracle相關數據的示例
Excel 通過VBA連接數據庫需要安裝相應的Oracle客戶端工具并引用ADO的相關組件，引用ADO相關組件可按如下步驟操作： 
　　1、打開VBA編輯器，在菜單中點選“工具”，“引用”； 
　　2、確保“Microsoft ActiviteX Data Objects 2.8 Library”和“Microsoft ActiviteX Data ObjectS Recordset 2.8 Library”被勾選上。 
　　建立連接過程，代碼如下： 

復制代碼代碼如下:

Public Sub ConOra() 
On Error GoTo ErrMsg: 
Dim ConnDB As ADODB.Connection 
Set ConnDB = New ADODB.Connection 
Dim ConnStr As String 
Dim DBRst As ADODB.Recordset 
Set DBRst = New ADODB.Recordset 
Dim SQLRst As String 
Dim OraOpen As Boolean 
OraOpen = False 
OraID="Orcl" 'Oracle數據庫的相關配置 
OraUsr="user" 
OraPwd="password" 
ConnStr = "Provider = MSDAORA.1;Password=" & OraPwd & _ 
";User ID=" & OraUsr & _ 
";Data Source=" & OraID & _ 
";Persist Security Info=True" 
ConnDB.CursorLocation = adUseServer 
ConnDB.Open ConnStr 
OraOpen = True '成功執行后，數據庫即被打開 
'MsgBox "Connect to the oracle database Successful!", vbInformation, "Connect Successful" 
DBRst.ActiveConnection = ConnDB 
DBRst.CursorLocation = adUseServer 
DBRst.LockType = adLockBatchOptimistic 
SQLRst = "Select * From TstTab" 
DBRst.Open SQLRst, ConnDB, adOpenStatic, adLockBatchOptimistic 
DBRst.MoveFirst 
Exit Function 
ErrMsg: 
OraOpen = False 
MsgBox "Connect to the oracle database fail ,please check!", vbCritical, "Connect fail!" 
End Function 
Public Sub ConOra() 
On Error GoTo ErrMsg: 
Dim ConnDB As ADODB.Connection 
Set ConnDB = New ADODB.Connection 
Dim ConnStr As String 
Dim DBRst As ADODB.Recordset 
Set DBRst = New ADODB.Recordset 
Dim SQLRst As String 
Dim OraOpen As Boolean 
OraOpen = False 
OraID="Orcl" 'Oracle數據庫的相關配置 
OraUsr="user" 
OraPwd="password" 
ConnStr = "Provider = MSDAORA.1;Password=" & OraPwd & _ 
";User ID=" & OraUsr & _ 
";Data Source=" & OraID & _ 
";Persist Security Info=True" 
ConnDB.CursorLocation = adUseServer 
ConnDB.Open ConnStr 
OraOpen = True '成功執行后，數據庫即被打開 
'MsgBox "Connect to the oracle database Successful!", vbInformation, "Connect Successful" 
DBRst.ActiveConnection = ConnDB 
DBRst.CursorLocation = adUseServer 
DBRst.LockType = adLockBatchOptimistic 
SQLRst = "Select * From TstTab" 
DBRst.Open SQLRst, ConnDB, adOpenStatic, adLockBatchOptimistic 
DBRst.MoveFirst 
Exit Function 
ErrMsg: 
OraOpen = False 
MsgBox "Connect to the oracle database fail ,please check!", vbCritical, "Connect fail!" 
End Function 

可以根據需要調整SQL語句，獲取相關數據，并輸出到Excel完成數據處理 
上述代碼在Windows XP SP3/2003 SP2 + Office2003下測試通過.