Database operational contract
MySQL 8.4.1 cannot restart after creating 8001 tables
The server runs during migration but cannot restart after a large multi-tenant schema load.
Agent Quick Fix
Repair against the current MySQL 8.4.1 contract, then keep the change narrow and source-backed.
Product: MySQL 8.4.1
Current-contract area: MySQL 8.4.1 restart failure after creating 8,001+ tables
Likely root cause: The server runs during migration but cannot restart after a large multi-tenant schema load.
Repair direction: Verifier checks durability, restart, and operational safety rather than a one-shot query. Verify a safe patch release and successful restart with data intact.Symptom
The server runs during migration but cannot restart after a large multi-tenant schema load.
Why This Happens
The local schema/query is valid, but upgrade path, restart behavior, replication syntax, or background operations changed in the server release.
Common Wrong Fixes
- Changing local code without checking the current external contract.
- Retrying the same install, build, or API call with no version/source change.
- Applying a broad unsafe bypass when a narrow compatibility fix is available.
Codex Search Keywords
These are the search terms observed in a neutral Codex validation run for this failure shape.
MySQL 8.4.1 cannot restart after creating 8001 tables
MySQL 8.4.1 8001 tables restart failure
"8001" "MySQL" "tables" "restart"
site:dev.mysql.com/doc/refman/8.4 InnoDB limits number of tables open files table_open_cache open_files_limit
MySQL 8.4 open_files_limit innodb_open_files table_open_cache documentation
dev.mysql.com MySQL 8.4 open_files_limit table_open_cache innodb_open_files
https://dev.mysql.com/doc/refman/8.4/en/server-system-variables.html
'open_files_limit' in https://dev.mysql.com/doc/refman/8.4/en/server-system-variables.html