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Home » Technical Support » DBISAM Technical Support » Incident Reports » Incident Reports Reported for Version 4.29 » View Incident Report

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Minor Minor
Reported By: Jorgen Nim Hansen
Reported On: 11/27/2009
For: Version 4.29 Build 2
# 3160 Upgrading Encrypted Tables from 3.x to 4.x Can Cause CheckSum Errors in Records
I am using Delphi 7 and DBISAM 4.29 Build 2.

After upgrading from ver. 3 to 4 I get the following error in some tables (UpgradeTable):

"Checksum for the physical resord #2 is invalid and the data is likely corrupted)"

Comments Comments and Workarounds
The problem was caused by the upgrade process not taking into account extra padding used to make sure that record lengths fall on even 8-byte boundaries for the 4.x strong crypto. The workaround is to repair the table after the upgrade.

Resolution Resolution
Fixed Problem on 11/29/2009 in version 4.29 build 3

Products Affected Products Affected
DBISAM Additional Software and Utilities
DBISAM ODBC Client-Server
DBISAM ODBC Client-Server with Source
DBISAM ODBC Standard
DBISAM ODBC Standard with Source
DBISAM ODBC Trial
DBISAM VCL Client-Server
DBISAM VCL Client-Server with Source
DBISAM VCL Standard
DBISAM VCL Standard with Source
DBISAM VCL Trial

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