April 27, 2004 - Cache' Backup, failure during restore of large archive
InterSystems has corrected a defect in Cache' backup that could result in inability to restore from a backup archive. This defect exists in all Cache' 4.1.x and later versions and for all platforms and operating systems.
This problem can only occur in backup archives with 16 or more databases. The likelihood of encountering this problem is low but increases with the number of databases in an archive. Existing backup archives can be checked with the following procedure without actually restoring any databases:
Use option 3 of the ^BACKUP utility "Restore Selected or Renamed Directories" and mark every database with an "X" to be skipped. If the restore reads through the entire archive without a "missing blocks" error then the archive is not affected by this defect.
Please note that a clean check of one archive with the above procedure does not guarantee that the next backup will not encounter the problem.
The correction for this defect is identified as LRS757 and is targeted for release in maintenance kit Cache' 5.0.8. It can also be delivered as an adhoc.
If you have any questions regarding this, please contact the InterSystems Worldwide Response Center at [EMAIL PROTECTED]
