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Assume that you have an instance of Microsoft SQL Server 2016 installed and the database files are on a local disk. When I/O requests take longer than 15 seconds, then SQL Server may report the following three errors until server is restarted:

DateTime spid     SQL Server has encountered 1 occurrence(s) of I/O requests taking longer than 15 seconds to complete on file [File Path] in Database ID: Database ID

Latch timeout

DateTime spid     A time-out occurred while waiting for buffer latch -- type 2, bp 00000051644A06C0, page 16:24731256, stat 0x40d, Database IDDatabase ID

Checkpoint error:

DateTime spid     Error: 5901, Severity: 16, State: 1.
DateTime spid     One or more recovery units belonging to database 'Database Name' failed to generate a checkpoint. This is typically caused by lack of system resources such as disk or memory, or in some cases due to database corruption. Examine previous entries in the error log for more detailed information on this failure.


This issue is fixed in the following cumulative update for SQL Server:

       Cumulative Update 12 for SQL Server 2016 SP1

Each new cumulative update for SQL Server contains all the hotfixes and all the security fixes that were included with the previous cumulative update. Check out the latest cumulative updates for SQL Server:

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 terminologythat Microsoft uses to describe software updates.

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