Error
Error Code:
1020
MariaDB Error 1020: Stale Data Update Attempt
Description
MariaDB Error 1020, 'Record has changed since last read', occurs when a transaction attempts to update a record that has been modified by another transaction after the current transaction initially read it. This indicates a concurrency conflict where the data your operation is based on is no longer current, preventing the update to maintain data integrity.
Error Message
Record has changed since last read in table '%s'
Known Causes
4 known causesConcurrent Data Modification
Another transaction successfully updated or deleted the target record after your transaction initially read it, invalidating your subsequent update attempt.
Optimistic Locking Mismatch
If using optimistic locking, the version, timestamp, or checksum used for validation no longer matches the current state of the record, indicating a prior modification.
Long-Running Transactions
Transactions that read data and then attempt to update it much later increase the likelihood of other transactions modifying the same data in the interim period.
Application Logic Flaw
The application logic attempts to update stale data without re-reading the latest state immediately before the write operation, leading to conflicts in highly concurrent environments.
Solutions
Coming SoonDetailed step-by-step solutions for this error are being prepared. In the meantime, try these general troubleshooting tips:
General Troubleshooting Tips
- Check the error message carefully for specific details
- Review recent changes that might have caused the error
- Search for the exact error code in the official documentation
- Check log files for additional context
- Try restarting the application or service