<p>MySQL throws error 1445 when a stored function, procedure, or trigger executes SET AUTOCOMMIT, which is disallowed inside these program blocks.</p>
<p>MySQL Error 1445 ER_SP_CANT_SET_AUTOCOMMIT appears when a stored function, procedure, or trigger tries to run SET AUTOCOMMIT. Move the SET AUTOCOMMIT statement outside the routine or replace it with START TRANSACTION/COMMIT to resolve the issue.</p>
Not allowed to set autocommit from a stored function or
Error 1445 fires with message "Not allowed to set autocommit from a stored function or trigger" when MySQL detects a SET AUTOCOMMIT statement inside a stored routine or trigger. MySQL prohibits toggling autocommit in program blocks to protect transactional consistency.
The error surfaces the moment the database server parses or executes a stored function, procedure, or trigger containing SET AUTOCOMMIT. It can also appear if dynamic SQL inside the routine runs the statement.
Leaving the autocommit command inside a routine prevents the object from compiling or executing, breaking dependent application logic and risking data integrity. Rapid remediation restores workflow continuity.
The direct cause is executing SET AUTOCOMMIT within stored code. It may be introduced by developers copying session-level scripts into routines or by ORM generators that wrap operations in SET AUTOCOMMIT.
Refactor the routine: remove SET AUTOCOMMIT and use START TRANSACTION and COMMIT or ROLLBACK. Alternatively, handle autocommit in the client session before calling the routine.
Triggers intended to disable autocommit on large inserts commonly raise 1445. Replace the statement with explicit transaction controls in the application layer. Stored procedures doing batch updates should use START TRANSACTION instead.
Keep session-level commands such as SET AUTOCOMMIT out of stored routines. Always test routines with strict SQL_MODE and use code review tools like Galaxy to surface disallowed statements before deployment.
Errors 1422, 1442, and 1336 also relate to disallowed statements in triggers and routines. They require similar refactoring strategies.
Developers sometimes paste session scripts into stored procedures without removing SET AUTOCOMMIT, causing error 1445.
Some frameworks emit SET AUTOCOMMIT for batch operations. When that SQL is embedded in a trigger, the error surfaces.
EXECUTE IMMEDIATE statements that construct SET AUTOCOMMIT at runtime will also be blocked inside stored routines.
Older MySQL versions allowed certain session changes; migrating these routines to newer versions triggers 1445.
Occurs when a trigger modifies the table that fired it. Solution: move the update to a procedure outside the trigger.
Raised when a trigger tries to alter or drop a table. Remove DDL from triggers to fix.
Appears when a stored function attempts statements not permitted by the function context. Refactor into a procedure.
Yes, but only at the session or global level, or inside client code using START TRANSACTION. Stored routines and triggers cannot invoke SET AUTOCOMMIT.
In stored code, yes. START TRANSACTION begins a manual transaction that you finish with COMMIT or ROLLBACK, matching the behavior you wanted from disabling autocommit.
No. Error 1445 is enforced regardless of SQL_MODE. You must remove the offending statement.
Galaxy flags SET AUTOCOMMIT inside routines during linting and suggests transaction-safe alternatives, preventing the error before deployment.
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