<p>MySQL fails to append a record to the internal DDL recovery log, aborting the DDL statement.</p>
<p>MySQL Error 1565: ER_DDL_LOG_ERROR signals that the server could not write to its internal DDL log, so the DDL statement is rolled back. Free disk space, fix file permissions, and restart the server after clearing the corrupted ddl_log file to resolve the issue.</p>
Error in DDL log
MySQL raises ER_DDL_LOG_ERROR when it cannot write metadata about a DDL operation to the ddl_log.ibd file inside the data dictionary. The server cancels the statement to protect consistency.
The error appears during CREATE, ALTER, RENAME, DROP, or TRUNCATE when the internal write fails. Fixing it quickly avoids dictionary corruption and downtime.
Disk space exhaustion prevents MySQL from expanding ddl_log.ibd, so the write request fails and the statement aborts.
Incorrect file or directory permissions on the data directory block MySQL from opening the log file in append mode.
File system corruption or an unclean shutdown leaves ddl_log.ibd in an inconsistent state that cannot accept new writes.
Free disk space on the partition that stores the MySQL data directory, then retry the DDL statement.
Verify ownership and permissions for ddl_log.ibd and the data directory, ensuring the mysqld user has read and write rights.
If ddl_log.ibd is corrupted, back it up, stop MySQL, delete the file, and start the server so it recreates a clean log.
Large ALTER TABLE operations fill the disk; purge old binary logs or increase storage, then rerun the command.
A staging server clone inherits wrong permissions; correct them with chown -R mysql:mysql /var/lib/mysql and restart.
An unexpected crash corrupts ddl_log.ibd; removing the file on restart lets MySQL rebuild it and accept new DDL.
Monitor free disk space and set alerts for the MySQL data partition so space issues are addressed before DDL runs.
Use proper shutdown procedures and enable crash-safe settings to minimize log corruption.
Automate permission checks in deployment scripts to keep ownership consistent.
ER_TABLESPACE_DISCARDED appears when a tablespace is missing; restore or recreate it.
ER_IB_MSG_... indicates InnoDB log file corruption; recover from backup and use innodb_force_recovery.
ER_CANNOT_ADD_LOGFILE is raised when redo log creation fails; ensure disk space and permissions are correct.
The partition hosting ddl_log.ibd is full, blocking additional log entries.
mysqld lacks write rights to ddl_log.ibd or its directory.
An abrupt crash corrupts the DDL log, making it unwritable.
Filesystem is mounted read-only after an error, so writes fail.
Raised when a discarded tablespace is accessed. Restore or import the tablespace to fix.
Indicates redo log file corruption. Start with innodb_force_recovery and restore from backup.
Occurs when InnoDB cannot create or grow redo logs. Free disk or correct permissions.
No user data is lost, but the DDL statement is rolled back to keep metadata consistent.
No. Ignoring it risks future crashes and dictionary mismatch. Always repair or recreate the file.
Restart is needed only if you must delete or move ddl_log.ibd. Permission and space fixes do not require a restart.
Galaxy highlights failed DDL statements in the editor, suggests fixes, and lets teams collaborate on safe schema migrations to prevent repeated errors.
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