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Quering information_schema.TABLES Is Slow in MySQL 5.7 and Earlier (Doc ID 2038763.1)

Last updated on JULY 03, 2018

Applies to:

MySQL Server - Version 5.0 to 5.7 [Release 5.0 to 5.7]
Information in this document applies to any platform.

Symptoms

Querying the TABLES table in the Information Schema is slow. This particularly happens when the query has no WHERE clause limiting the database and/or table names and the database has many tables.

Cause

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In this Document
Symptoms
Cause
Solution
 Upgrade to MySQL 8.0 or Later
 Limit the Database and Tables Scanned
 Limit the Columns Included
 Ensure the Table Caches are Large Enough
References


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