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Last Arcserve Backup Database Backup Information

Every time the Arcserve Backup database is backed up successfully, the backup media information is retained in a series of log files labeled ASDBBackups.txt and ASDBBackups.n.txt. The log files are stored in the Arcserve Backup home directory.

Each of these log files contains the detail information about the complete backup history of the Arcserve Backup database. For example, the log files contain detail information about the following items:

Note: This is not an exhaustive list.

• Tape name, serial number, and sequence number
• Session GUID, session ID, session type
• Backup method (for example, full, incremental, differential)
• Backup date
• Type of database
• Path of the instance

Note: The log files do not contain descriptive text or comments.

Arcserve Backup references the log files when you need to restore the Arcserve Backup database because it is not in a usable state or corrupt. The Arcserve Backup Disaster Recovery Option and Arcserve Database Recovery Wizard reference ASDBBackups.txt to determine the media that contains the latest Arcserve Backup database backup data.

Arcserve Backup manages the log files using the following logic:

1. The information for the most recent full, incremental, and differential backup of the Arcserve Backup database is always stored in the file labeled ASDBBackups.txt.
2. After the second full backup of the Arcserve Backup database is complete, ASDBBackups.txt is renamed ASDBBackups.1.txt and then a new ASDBBackups.txt is created.
3. After the third full backup is complete, ASDBBackups.1.txt is renamed ASDBBackups.2.txt, ASDBBackups.txt is renamed ASDBBackups.1.txt and then a new ASDBBackups.txt is created.
4. The log file renaming and creating process continues until Arcserve Backup creates a log file named ASDBBackups.10.txt.
5. If a log file labeled ASDBBackups.10.txt exists after the full backup is complete, Arcserve Backup deletes ASDBBackups.10.txt, renames the older log files, and then creates a new ASDBBackups.txt log file.

If ASDBBackups.txt is corrupt, you can rename any of the files labeled ASDBBackups.n.txt to ASDBBackups.txt and use the renamed log file to recover the Arcserve Backup database.