Common SQL Errors

MySQL Error 1581: ER_CANT_RENAME_LOG_TABLE - How to Fix and Prevent

Galaxy Team
August 7, 2025

<p>MySQL blocks RENAME TABLE when an active log table cannot be switched with its archive table during binary or general logging.</p>

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What is MySQL error 1581 ER_CANT_RENAME_LOG_TABLE?

<p>MySQL Error 1581 ER_CANT_RENAME_LOG_TABLE occurs when you try to rename a log table while logging is enabled. Disable the relevant logs, rename both the active and archive tables in one statement, then re-enable logging to resolve the issue.</p>

Error Highlights

Typical Error Message

Cannot rename '%s'. When logging enabled, rename to/from

Error Type

DDL Error

Language

MySQL

Symbol

ER_CANT_RENAME_LOG_TABLE

Error Code

1581

SQL State

HY000

Explanation

Table of Contents

What is MySQL Error 1581 ER_CANT_RENAME_LOG_TABLE?

MySQL raises error 1581 when a RENAME TABLE statement targets a log table while logging is active. The server needs to move the current log table to an archive name and restore another table to the original name, but the required dual rename cannot be executed safely.

The error protects binary, general, and slow query logs from inconsistency. When log_output is set to TABLE, MySQL writes directly to mysql.general_log or mysql.slow_log. Renaming these tables while they are in use risks losing or corrupting log data, so the server blocks the request.

When does this error occur?

The message appears during RENAME TABLE, ALTER TABLE RENAME, or ALTER TABLE ... RENAME TO commands on mysql.general_log or mysql.slow_log when their corresponding logging variables are ON. It can also arise in scripted maintenance routines that archive log tables without first disabling logging.

Why should you fix it quickly?

Failing to complete the intended rename leaves maintenance scripts in a broken state, fills disk space with growing log tables, and prevents automated archiving jobs. Resolving the error restores log rotation workflows and keeps the MySQL instance healthy.

Common Causes

Logging still enabled

general_log, slow_query_log, or binary logging variables remain ON, so the log table is locked for writing.

Single-table rename attempt

Only the active log table was included in the RENAME statement, omitting the necessary archive table swap.

Incorrect table names

The statement references non-existent archive tables, blocking the atomic rename.

Insufficient privileges

The session lacks ALTER and DROP permissions on the mysql system schema, causing the rename to fail.

Related Errors

MySQL Error 1025: error on rename of

General failure when RENAME TABLE cannot complete because of constraints, locks, or filesystem issues.

MySQL Error 1557: ER_CANNOT_LOAD_FROM_TABLE

Raised when attempting to read from log tables while they are being altered.

MySQL Error HY000: Table 'mysql.general_log' doesn't exist

Appears if the log table was dropped instead of renamed and logging is still enabled.

FAQs

Can I rename log tables without turning logging off?

No. MySQL requires logging to be disabled because it must close file descriptors before moving the table.

Is FLUSH LOGS enough to avoid error 1581?

FLUSH LOGS rotates file based logs but does not disable TABLE based logging, so the error can still occur.

Which versions of MySQL show this error?

Error 1581 appears in MySQL 5.1 and later whenever log_output is TABLE and logging is active.

How does Galaxy help?

Galaxy's AI copilot warns about active logging variables and suggests the correct disable-rename-enable sequence, reducing production errors.

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