set-the-auto-close-database-option-to-off.md

title	Set the AUTO_CLOSE Database Option to OFF
description	Check whether the AUTO_ CLOSE option is OFF. The AUTO_ CLOSE option has implications for performance in SQL Server.
author	VanMSFT
ms.author	vanto
ms.date	12/15/2023
ms.service	sql
ms.subservice	security
ms.topic	reference
helpviewer_keywords	Best Practices [Database Engine]

Set the auto_close database option to off

[!INCLUDE SQL Server]

This rule checks whether the AUTO_ CLOSE option is set OFF. When AUTO_CLOSE is set ON, this option can cause performance degradation on frequently accessed databases because of the increased overhead of opening and closing the database after each connection. AUTO_CLOSE also flushes the procedure cache after each connection.

Best practices recommendations

If a database is accessed frequently, set the AUTO_CLOSE option to OFF for the database.

For more information

ALTER DATABASE SET Options (Transact-SQL)

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