Article ID: 167906
Article Last Modified on 6/2/2005
APPLIES TO
- The DAO SDK, when used with:
- Microsoft Visual C++ 4.0 Standard Edition
- Microsoft Visual C++ 4.1 Subscription
- Microsoft Visual C++ 4.2 Enterprise Edition
- Microsoft Visual C++ 4.2 Professional Edition
- Microsoft Visual C++ 5.0 Enterprise Edition
- Microsoft Visual C++ 5.0 Professional Edition
- Microsoft Visual C++ 6.0 Enterprise Edition
- Microsoft Visual C++ 6.0 Professional Edition
- Microsoft Visual C++ 6.0 Standard Edition
- Microsoft Foundation Class Library 4.2
This article was previously published under Q167906
SYMPTOMS
If you call CDaoWorkspace::RepairDatabase() or CdbDbEngine::RepairDatabase on a corrupt Access 7.0 database, it may result in a database that is so corrupt that it cannot be recovered.
NOTE: This same behavior may occur in Microsoft Access 97 with databases That are converted from Microsoft Access 7.0. If this happens, you should either:
Create a new database in Microsoft Access 97 and import all the objects from a backup copy of the Microsoft Access 7.0 database.
- or -
Use Jetcomp.exe, a stand-alone utility, to compact the database.
CAUSE
The MSysObjects system table is corrupted.
RESOLUTION
You should always call CDaoWorkspace::CompactDatabase() before calling CDaoWorkspace::RepairDatabase() on an Access 7.0 database. It is a good idea to compact, repair, and backup your database frequently.
MORE INFORMATION
Sample Code
/* Compile options needed: none
*/
// The following code will repair the database C:\DB1.MDB
// using the MFC DAO classes
try
{
CDaoWorkspace::CompactDatabase( _T( "C:\\DB1.MDB" ),
_T( "C:\\DB2.MDB" ) );
CDaoWorkspace::RepairDatabase( _T( "C:\\DB2.MDB" ) );
}
catch( CDaoException* e )
{
AfxMessageBox( e->m_pErrorInfo->m_strDescription );
e->Delete();
}
REFERENCES
For more information, click the following article numbers to view the articles in the Microsoft Knowledge Base:
109953 How to troubleshoot/repair damaged Jet 3.0 and prior databases
158933 Error message: <Database name> isn't an index in this table
Additional query words: Jet 3.0
Keywords: kbtshoot kbdatabase kbprogramming kbprb kbcode KB167906
