sync_frm
WARNING
Rule IDs: mi_009
Overview
- Purpose
- Legacy
.frmsync behavior; removed in MySQL 8.0. - Dynamic (MySQL 8.4 reference)
- Not applicable on MySQL 8.0+.
- Default value
- N/A on 8.0+
- Version and product notes
- Removed in MySQL 8.0; relevant only on older branches if still in use.
- Documentation
- Primary reference depends on product (MySQL, MariaDB, Percona, or OS documentation).
What is checked
Rules that reference this variable, with their severity and what each rule detects:
- WARNING
mi_009: Set sync_frm=OFF to improve performance of metadata operations. Note: this variable is deprecated and removed in MySQL 8.0.
Tuning guidance
- Recommended actions:
- Set sync_frm=OFF to improve performance of metadata operations. Note: this variable is deprecated and removed in MySQL 8.0.
- Trade-offs: Validate recommendations against monitoring, workload profiles, and vendor documentation before making changes.
Example
Upgrade planning: move to supported versions and InnoDB-centric schema.