Today’s scheduled database backup failed to complete. Upon review, the issue was traced to a PHP execution time limit being exceeded during the process. This was the first time the compressed output exceeded 50MB in size due to a schema update in the customer table.
Cause
Backup method: phpMyBackupPro cron script
Compression: gzip
Error observed:Fatal error: Maximum execution time of 30 seconds exceeded
Resolution
We modified the PHP configuration on the cron runner server:
max_execution_time = 300
And restarted the web server to apply changes. A manual backup test was successful afterward.
Next Steps
Implement automatic notification for timeout errors
Segment large backups or exclude binary data from the default run
Review all scheduled tasks for max_execution_time compatibility
Notes
This entry is archived for future diagnostics. No data loss occurred. The backup was completed manually and stored as clients_backup_manual_20120626.sql.gz.