Warning
Error Code:
1684
MariaDB Error 1684: Table Skipped Due to Concurrent DDL
Description
This error is a warning indicating that a specific table was skipped during an operation because its definition was actively being modified by another concurrent DDL (Data Definition Language) statement. MariaDB issues this warning to prevent data inconsistency or corruption when multiple schema changes occur simultaneously on the same table.
Error Message
Table '%s'.'%s' was skipped since its definition is being modified by concurrent DDL statement
Known Causes
3 known causesMultiple Concurrent DDL Statements
Two or more DDL operations (e.g., ALTER TABLE, CREATE INDEX) are attempting to modify the same table's schema simultaneously.
Unsynchronized Automated Scripts
Automated maintenance or deployment scripts are executing DDL commands without proper coordination or locking mechanisms.
Extended DDL Lock Times
A DDL operation is holding a schema lock on a table for an extended period, allowing other DDL statements to attempt concurrent modifications.
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