EC
1439
MySQLERRORNotableStorage EngineHIGH confidence

Failed to read auto-increment value from storage engine

Production Risk

High — inserts to the table will fail until the auto-increment counter is recovered.

What this means

ER_AUTOINC_READ_FAILED (1439, SQLSTATE HY000) is returned when MySQL cannot read the auto-increment counter from the storage engine, typically indicating table corruption or engine-level issues.

Why it happens
  1. 1Table corruption preventing auto-increment counter retrieval
  2. 2InnoDB data dictionary mismatch
  3. 3Crash during auto-increment update leaving inconsistent state
How to reproduce
trigger — this will error
trigger — this will error
INSERT INTO my_table (name) VALUES ('test');
-- If auto-increment counter is unreadable:
-- ERROR 1439 (HY000): Failed to read auto-increment value from storage engine

expected output

ERROR 1439 (HY000): Failed to read auto-increment value from storage engine

Fix 1

Repair or rebuild the table

Repair or rebuild the table
REPAIR TABLE my_table;
-- Or for InnoDB:
ALTER TABLE my_table ENGINE=InnoDB;

Why this works

Rebuilding the table resets the auto-increment counter based on the existing maximum value.

Fix 2

Manually set the auto-increment value

Manually set the auto-increment value
ALTER TABLE my_table AUTO_INCREMENT = 1;

Why this works

Forces MySQL to recalculate the auto-increment counter from the current data.

Sources
Official documentation ↗

MySQL 8.0 — 1439 ER_AUTOINC_READ_FAILED

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