<p>MySQL error 1467 occurs when the server cannot retrieve the next auto-increment value from the storage engine, blocking inserts into tables with AUTO_INCREMENT columns.</p>
<p>MySQL Error 1467: ER_AUTOINC_READ_FAILED appears when the server fails to fetch the next AUTO_INCREMENT value from the storage engine, halting INSERT operations. Check table corruption, verify engine settings, and rebuild or repair the table to restore normal writes.</p>
Failed to read auto-increment value from storage engine
Error 1467 signals that MySQL could not read the next AUTO_INCREMENT value from the underlying storage engine. The server aborts the current INSERT or LOAD DATA statement to prevent duplicate primary keys.
The problem usually appears in InnoDB or MyISAM tables where internal metadata holding the auto-increment counter becomes inaccessible, inconsistent, or corrupted. Fixing it quickly is essential because all writes that rely on automatic key generation will fail.
The error fires during INSERT, REPLACE, LOAD DATA, or ALTER TABLE operations that need a new auto-increment value. It can surface after an unexpected crash, disk issues, or improper replication settings that desynchronize the counter.
Leaving the issue unresolved stalls application workflows, risks data loss, and can cascade into replication lag or secondary errors (e.g., duplicate key violations). Immediate diagnosis preserves data integrity and uptime.
If the internal SYS_TABLES or SYS_COLUMNS records are damaged, InnoDB cannot fetch the auto-increment metadata.
For MyISAM, the counter lives in the .MYI file header. Disk errors or abrupt power loss can corrupt this section.
Replica servers with auto_increment_offset or auto_increment_increment misconfigured may fail to read the correct value and throw the error.
Attempting to insert beyond the maximum value of an INT or BIGINT column causes the engine to fail reading the next value.
MySQL needs read-write access to the tablespace files. Permission changes or filesystem errors can block the read.
Occurs when a transaction cannot obtain a needed lock. It differs because it relates to concurrency, not metadata reads.
Signals the engine cannot write to the table due to permissions or read-only mode, sometimes confused with auto-increment failures.
Happens when two rows try to use the same primary key. It may appear after recovering from 1467 if the counter is not reset.
A generic storage layer failure that can wrap deeper issues, including auto-increment read failures.
No. While corruption is common, misconfigured replication or hitting the integer limit can also trigger the error.
Ignoring intermittent 1467 errors risks data gaps and duplicate keys. Investigate and fix the root cause immediately.
Moving from MyISAM to InnoDB or vice versa rebuilds metadata and can clear the error, but diagnose underlying disk issues first.
Galaxy's collaborative editor surfaces failed inserts, keeps migration history, and lets teams quickly test ALTER TABLE fixes without production impact.
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