3411
MariaDBERRORNotableForeign KeysHIGH confidence
Cannot open parent table for foreign key validation
Production Risk
High — DML on child tables fails; application writes are blocked.
How to reproduce
trigger — this will error
trigger — this will error
INSERT INTO child (col) VALUES (1);
expected output
ERROR 3411 (HY000): Cannot open parent table for foreign key check.
Fix
Verify parent table accessibility
Verify parent table accessibility
SELECT 1 FROM parent LIMIT 1; CHECK TABLE parent;
Why this works
Confirms the parent table is accessible and structurally sound.
What not to do
✕
Sources
Official documentation ↗
MySQL 8.0 — 3411 ER_FK_CANNOT_OPEN_PARENT
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