1645
MySQLERRORCommonStorage EngineHIGH confidence
Failed to read from .par partition file
Production Risk
High — the table is inaccessible until the file is restored.
What this means
MySQL could not read the .par partition definition file for a partitioned table, usually because the file is missing, corrupt, or has wrong permissions.
Why it happens
- 1The .par file for the partitioned table was deleted or is corrupted.
- 2File system permissions prevent MySQL from reading the .par file.
How to reproduce
trigger — this will error
trigger — this will error
SELECT * FROM partitioned_table;
expected output
ERROR 1645 (HY000): Failed to read from the .par file.
Fix 1
Restore the .par file from backup
Restore the .par file from backup
-- Restore the .par file from a recent backup, then restart MySQL
Why this works
Restoring the intact partition definition file allows MySQL to open the table.
Fix 2
Repair or recreate the table
Repair or recreate the table
REPAIR TABLE partitioned_table; -- or recreate and import data from backup
Why this works
Recreating the table generates a new valid .par file.
What not to do
✕
Version notes
Sources
Official documentation ↗
MySQL 8.0 — 1645 ER_FAILED_READ_FROM_PAR_FILE
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