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Join Date: Mar 2005
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Here is one that is stumping me.
I have an Access 2000 database backend. It got corrupted. It is a large database. I compacted and repaired it and a record came up corrupted. There was a compact error table created that has a binary column in it. The binary column points to a bookmark that tells which row was corrupted. I am trying use vb .net to retrieve that row using the binary column to show me which record is corrupted, however, I cannot get it to work right. I have found VBA for Access code that does something similar, but I need it in VB .net. Here is the VBA code that I have:
Any ideas?
Thanks, Chester
I have an Access 2000 database backend. It got corrupted. It is a large database. I compacted and repaired it and a record came up corrupted. There was a compact error table created that has a binary column in it. The binary column points to a bookmark that tells which row was corrupted. I am trying use vb .net to retrieve that row using the binary column to show me which record is corrupted, however, I cannot get it to work right. I have found VBA for Access code that does something similar, but I need it in VB .net. Here is the VBA code that I have:
Sub main()
On Error GoTo ErrorHandler
Dim db As DAO.Database, vBookMark As Variant, _
rsMSysCompactError As DAO.Recordset, strErrorTable As String, _
rsErrorTable As DAO.Recordset, fldErrorField As DAO.Field, _
strSQLSEL As String, strColumnValue As Variant, _
qdTemp As QueryDef, strSQLINS As String, intLoop As Integer, _
lngTableNameLength As Long, _
colErrorCollection As New Collection, intErrorCount As Integer
Set db = CurrentDb()
' Walk through the MSysCompactError table to find rows that reflect
' lost data values.
Set rsMSysCompactError = db.OpenRecordset("SELECT * FROM MSysCompactError WHERE ErrorRecId IS NOT NULL", dbOpenDynaset)
intErrorCount = 0
While Not rsMSysCompactError.EOF
' Get the name of the table that had column data missing.
strErrorTable = rsMSysCompactError!ErrorTable
' Check to see that tablename is not greater than 48 characters
' to stay under 64 character tablename limit.
lngTableNameLength = Len(strErrorTable)
If lngTableNameLength > 48 Then
strErrorTable = Mid(strErrorTable, 1, 48)
' See if this truncated table name already exists.
On Error Resume Next
colErrorCollection.Add strErrorTable, strErrorTable
' If this already exists in the collection, then there is a
' duplicate table name.
If Err = 457 Then
' Truncate one more digit to append on the intErrorCount
' number to eliminate the duplicate table name.
strErrorTable = Mid(strErrorTable, 1, 47)
strErrorTable = strErrorTable & Mid((Str(intErrorCount)), 2, 1)
intErrorCount = (intErrorCount + 1)
End If
End If
' Get the bookmark value of the row that had lost column data.
vBookMark = rsMSysCompactError!ErrorRecId
' Open table that has lost column data.
Set rsErrorTable = db.OpenRecordset(strErrorTable, dbOpenTable, dbReadOnly)
' Move to row that has lost column data.
rsErrorTable.Bookmark = vBookMark
' Start to build SQL string to call up in a table window.
strSQLSEL = "SELECT * INTO MSysCompactError" & strErrorTable & " FROM " & strErrorTable & " WHERE "
strSQLINS = "INSERT INTO MSysCompactError" & strErrorTable & " SELECT * FROM " & strErrorTable & " WHERE "
intLoop = 0
For Each fldErrorField In rsErrorTable.Fields
strColumnValue = fldErrorField.Value
' Logic to build predicate based on various data types.
If Not IsNull(strColumnValue) Then
' Can't use ordinal as no guarantee of first column
' being zero.
' Check to see if this is the first column or not to
' build SQL statement.
If intLoop = 0 Then
If fldErrorField.Type = dbDate Then
strSQLSEL = strSQLSEL & "[" & fldErrorField.Name & "] = " & "#" & strColumnValue & "#"
strSQLINS = strSQLINS & "[" & fldErrorField.Name & "] = " & "#" & strColumnValue & "#"
Else
If fldErrorField.Type = dbText Or fldErrorField.Type = dbChar Or fldErrorField.Type = dbMemo Then
strSQLSEL = strSQLSEL & "[" & fldErrorField.Name & "] = " & "'" & strColumnValue & "'"
strSQLINS = strSQLINS & "[" & fldErrorField.Name & "] = " & "'" & strColumnValue & "'"
Else
strSQLSEL = strSQLSEL & "[" & fldErrorField.Name & "] = " & strColumnValue
strSQLINS = strSQLINS & "[" & fldErrorField.Name & "] = " & strColumnValue
End If
End If
Else
If fldErrorField.Type = dbDate Then
strSQLSEL = strSQLSEL & " AND " & "[" & fldErrorField.Name & "] = " & "#" & strColumnValue & "#"
strSQLINS = strSQLINS & " AND " & "[" & fldErrorField.Name & "] = " & "#" & strColumnValue & "#"
Else
If fldErrorField.Type = dbText Or fldErrorField.Type = dbChar Or fldErrorField.Type = dbMemo Then
strSQLSEL = strSQLSEL & " AND " & "[" & fldErrorField.Name & "] = " & "'" & strColumnValue & "'"
strSQLINS = strSQLINS & " AND " & "[" & fldErrorField.Name & "] = " & "'" & strColumnValue & "'"
Else
strSQLSEL = strSQLSEL & " AND " & "[" & fldErrorField.Name & "] = " & strColumnValue
strSQLINS = strSQLINS & " AND " & "[" & fldErrorField.Name & "] = " & strColumnValue
End If
End If
End If
End If
intLoop = (intLoop + 1)
' QJet limitation for maximum conditions is reached.
If intLoop = 39 Then
Exit For
End If
Next fldErrorField
On Error Resume Next
' Create error table if it does not exist.
db.Execute strSQLSEL, dbFailOnError
If Err = 3010 Then
On Error GoTo ErrorHandler
' Add rows to error table if it already exists.
db.Execute strSQLINS, dbFailOnError
End If
rsErrorTable.Close
rsMSysCompactError.MoveNext
Wend
rsMSysCompactError.Close
MsgBox "Done!"
Exit Sub
ErrorHandler:
MsgBox "An error has occurred " & Err & " " & Error
Resume Next
End Sub
Any ideas?
Thanks, Chester
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Join Date: Aug 2006
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If you access database gets corrupted try easy ways to repair rather using long codes. You can use Kernel Access Repair Software as it repair corrupted access database
http://www.nucleustechnologies.com/A...r-Software.php
http://www.nucleustechnologies.com/A...r-Software.php
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Join Date: Apr 2008
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Hi,
There is a tool called Advanced Access Repair. I have used it to repair many corrupt Access MDB files on my damaged disks successfully.
Hope this helps.
Alan
There is a tool called Advanced Access Repair. I have used it to repair many corrupt Access MDB files on my damaged disks successfully.
Hope this helps.
Alan
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Join Date: Apr 2008
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In case of database corruption you can import your corrupted databse to a new blank database or you can repair it using compact and repair utility provided by MS office. This tool will repair your damaged database. In case its not able to repair database then you search for access repair utility.
Last edited by Narue : May 30th, 2008 at 11:59 am. Reason: Snipped advertising
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