3297
MySQLERRORNotableSystem VariablesHIGH confidence
Variable is global only and cannot be set at session level
Production Risk
Low — command is rejected; no configuration change occurs.
How to reproduce
trigger — this will error
trigger — this will error
SET SESSION innodb_buffer_pool_size = 134217728;
expected output
ERROR 3297 (HY000): Variable 'innodb_buffer_pool_size' is a GLOBAL variable and should be set with SET GLOBAL.
Fix
Use SET GLOBAL
Use SET GLOBAL
SET GLOBAL innodb_buffer_pool_size = 134217728;
Why this works
GLOBAL scope is required for server-wide configuration variables.
What not to do
✕
Sources
Official documentation ↗
MySQL 8.0 — 3297 ER_GLOBAL_VARIABLE2
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