<p>MySQL cannot persist a scheduled event in the mysql.event table or binary log, so the CREATE/ALTER EVENT statement fails.</p>
<p>MySQL Error 1538 ER_EVENT_STORE_FAILED happens when the server cannot write a scheduled event to its metadata tables or binary log. Check table integrity, disk space, permissions, and server variables, then recreate or alter the event to resolve the failure.</p>
Failed to store event %s. Error code %d from storage
The error text Failed to store event N indicates that MySQL tried to write metadata for a scheduled event but the operation did not complete successfully. The server aborts the CREATE EVENT or ALTER EVENT statement and returns SQLSTATE HY000 along with error 1538.
Because scheduled events live in the mysql.event system table and can be replicated through the binary log, any issue that blocks writing to either location can trigger this failure. Fixing the underlying storage or logging problem removes the error.
The message surfaces during CREATE EVENT, ALTER EVENT, or ENABLE EVENT commands when the Event Scheduler attempts to persist changes. It may also arise during server startup if mysql.event rows must be rewritten due to an upgrade.
Production databases that rely on events for cleanup tasks or reporting jobs may suddenly stop creating new events, breaking downstream automation until the problem is addressed.
If event definitions cannot be stored, scheduled jobs will not run, leading to data drift, stale caches, or missed business SLAs. The error often signals deeper issues such as disk exhaustion or table corruption that can impact other workloads.
The system table that stores event metadata may contain invalid rows or index issues, preventing inserts or updates.
Disabled or full binary logs, read-only file systems, or insufficient disk space can block logging of the event statement, causing the store operation to abort.
The definer of the event lacks INSERT or UPDATE rights on the mysql schema, so MySQL refuses to persist the definition.
When event_scheduler=OFF, the server may still allow CREATE EVENT but fail to commit metadata in certain versions, leading to error 1538.
After a server upgrade, the mysql.event table structure may not match the running MySQL version, blocking writes until mysql_upgrade is executed.
Appears when the Event Scheduler cannot update its in-memory queue, often due to the same root causes as error 1538.
Occurs when MySQL cannot remove an event from metadata storage or binary logs.
Returned when attempting to create an event that already exists in mysql.event.
Generated if the event creation would reference invalid or disallowed objects.
Yes. If the event cannot be written to the binary log, replicas will not see the event definition, leading to divergent behavior across servers.
Disabling the binary log may allow the event to store locally, but it breaks point-in-time recovery and replication. Fix the underlying logging issue instead.
REPAIR TABLE keeps existing rows whenever possible. Always back up the mysql schema before running the command.
Galaxy’s editor surfaces real-time MySQL errors, offers AI-generated repair steps, and lets teams share vetted FIX scripts so the same failure is not repeated.
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