Common SQL Errors

MySQL Error 1683: ER_WRONG_PERFSCHEMA_USAGE - How to Fix and Prevent

Galaxy Team
August 7, 2025

<p>Error 1683 appears when a statement tries to read or change performance_schema tables in a way the engine does not allow.</p>

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What is MySQL error 1683?

<p>MySQL Error 1683: ER_WRONG_PERFSCHEMA_USAGE means a query misuses performance_schema tables, often by attempting INSERT, UPDATE, or DELETE operations. Check the statement, target only allowed columns, or copy data to a regular table before modification to resolve the issue.</p>

Error Highlights

Typical Error Message

Invalid performance_schema usage.

Error Type

Configuration Error

Language

MySQL

Symbol

ER_WRONG_PERFSCHEMA_USAGE

Error Code

1683

SQL State

HY000

Explanation

Table of Contents

What is MySQL Error 1683: ER_WRONG_PERFSCHEMA_USAGE?

Error 1683 is raised when MySQL detects an invalid operation against the performance_schema. The schema is a read-only diagnostics area, so DML or unsupported SELECT clauses trigger the error.

The error.text is: Invalid performance_schema usage. It usually appears with SQLSTATE HY000.

Why does this error matter?

The performance_schema collects low-level server metrics. Misusing it can lead to misleading monitoring data or unnecessary query failures. Fixing the error prevents outages in automation scripts and keeps observability tools working.

What Causes This Error?

Most causes trace back to running INSERT, UPDATE, DELETE, or CREATE statements on performance_schema tables.

Selecting hidden or nonexistent columns, or using FOR UPDATE or LOCK IN SHARE MODE on performance_schema views, also triggers the error.

How to Fix MySQL Error 1683

Review the failing query and ensure it only selects allowed columns from performance_schema.

Move any write operation to a regular database. Copy the diagnostics data first if needed.

Common Scenarios and Solutions

Automation scripts that rotate connection statistics often try DELETE ... FROM performance_schema. Replace this with TRUNCATE TABLE stats_table after copying data to your own schema.

Monitoring tools that join performance_schema with application tables might select columns with ambiguous names. Qualify each column or create a view in another schema.

Best Practices to Avoid This Error

Grant applications only SELECT privileges on performance_schema.

Validate any generated SQL in a staging environment. Galaxy users can run queries in read-only mode to catch violations before production.

Related Errors and Solutions

Error 1109 unknown_table - appears when the requested performance_schema table does not exist.

Error 1142 command denied - occurs if the user lacks SELECT on performance_schema.

Common Causes

Cause: Write Operation on performance_schema

Running INSERT, UPDATE, DELETE, or TRUNCATE against performance_schema triggers error 1683.

Cause: SELECT ... FOR UPDATE

Locking clauses on diagnostic tables are disallowed because performance_schema is not transactional.

Cause: Selecting Unsupported Columns

Columns marked as INTERNAL or deprecated cannot be referenced directly.

Cause: Misconfigured Monitoring Tool

Some third-party agents generate write statements for cleanup that fail in newer MySQL versions.

Related Errors

Error 1109 unknown_table

Raised when a performance_schema table name is misspelled or not available in the current MySQL release.

Error 1142 command denied

Occurs when the executing user lacks SELECT permissions on performance_schema.

Error 1044 access denied

Shows up when a user tries to enable performance_schema without proper SUPER privilege.

FAQs

Can I ever modify performance_schema tables?

No. They are designed as read-only views. Any modification must target a copy in another schema.

How do I clear performance_schema data?

Restart MySQL or disable and re-enable performance_schema. Alternatively, copy rows you need and ignore the rest.

Will disabling performance_schema remove the error?

The error disappears because the schema vanishes, but you also lose valuable metrics. Prefer read-only access instead.

How does Galaxy help?

Galaxy flags write statements on performance_schema during code review and suggests safe alternatives, preventing runtime failures.

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