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An "out of memory" error may occur even when there are many free pages in Microsoft SQL Server. Additionally, you receive a message that resembles the following:

date time Failed to allocate reserved pages: FAIL_RESERVED_PAGE_ALLOCATION 1

Note: This is frequently observed when running DBCC CHECKDB, but is not exclusive to this command.


A fix for this issue is included in the following updates for SQL Server:

          Cumulative Update 10 for SQL Server 2017

          Cumulative Update 3 for SQL Server 2016 SP2

About SQL Server builds

Each new build for SQL Server contains all the hotfixes and security fixes that were in the previous build. We recommend that you install the latest build for your version of SQL Server:

The latest build for SQL Server 2017

Latest cumulative update for SQL Server 2016


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.


Learn about the standard terminology Microsoft uses to describe software updates.

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