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Microsoft: Access Modules (VBA Coding) FAQ

Compacting Databases

How do I compact my Access 97 database from code? by oharab
Posted: 22 May 02 (Edited 14 Jun 02)

The simple answer is "You can't".
You cannot compact the database you are in through code in Access 97. To work round this I created this VBscript.

Copy all the text into a text file and call it CompactDB.vbs or something.


Dim objEngine
Dim objDB
Dim strDb1, strPath

'Path to database: In this case the same as the script location

strDb1 = strpath & "Data.mdb"

Set FSO = CreateObject("Scripting.FileSystemObject")

do while FSO.FileExists(Left(strDb1, len(strDb1)-3) & "ldb")=True
'As long as an ldb file exists, someone is in the database, so just do nothing until it goes.

if msgbox("About to perform some basic self maintenance." & chr(10) & "It is vital you do not exit windows until you receive the confirmation message." & chr(10) & "Press Ok to continue or Cancel to stop the process.",1,"Impact XP")=1 then
'let them know we are about to start

Set objEngine = WScript.CreateObject("DAO.DBEngine.35")

call CompactDB(FSO, objEngine, strDB1, "")

msgbox "File maintenance complete"
end if

Function CompactDB (objFSO, objEngine, strDb, pwd)
   'compact db

   strdbtemp = Left(strDb, len(strDb)-3) & "ldb"
   If FSO.FileExists(strdbTemp)=True then 'if ldb file exists, db is still open.
       msgbox "You have not exited the file. Please close and try again."
       Exit Function
   End if

   if FSO.FileExists(strDb1) = False then
      Exit Function
   End If

   strdbtemp = Left(strDb, len(strDb)-3) & "tmp"
   if pwd="" then
         objEngine.CompactDatabase strDb, strdbtemp
      objEngine.CompactDatabase strDb, strdbtemp, ,  , ";pwd=" & pwd
   end if
   If Err <> 0 Then Exit Function
   fso.deletefile strdb
   fso.copyfile strdbtemp, strdb
   fso.deletefile strdbtemp
End Function


In your database you call the code using the fHandleFile function found here:


It waits until you are out of the database and then compacts it for you.

Easy when you know how!


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