4086
MySQLERRORCommonHIGH confidence
InnoDB undo log encryption not supported in this configuration
Production Risk
High — Undo log encryption failure can prevent transactions from completing.
Why it happens
- 1innodb_undo_log_encrypt=ON but no keyring plugin is loaded.
- 2The keyring plugin failed initialization before InnoDB attempted to enable undo encryption.
Fix 1
Load a keyring plugin before enabling undo log encryption
Why this works
keyring_file or keyring_vault must be initialized first.
Fix 2
Check keyring status
Check keyring status
SHOW STATUS LIKE 'keyring%';
Why this works
Confirms keyring availability before enabling encryption features.
What not to do
✕
Sources
Official documentation ↗
MySQL 8.0 — 4086 ER_INNODB_UNDO_LOG_ENCRYPT_NOT_SUPPORTED
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