FIX: SQL Server takes long time to open the databases after the recovery phase when the number of databases or database files or both is large in SQL Server 2012 or SQL Server 2014

Applies to: SQL Server 2012 DeveloperSQL Server 2012 EnterpriseSQL Server 2012 Standard More

Symptoms


Assume that you use Microsoft SQL Server 2012 or SQL Server 2014. Time taken by SQL Server to open the database post recovery would gradually increase when the number of files in the database or databases increases.

Cause


The issue occurs because there is inefficient code in the SQL Server startup phase when the number of databases or database or both files is large.

Resolution


The issue was first fixed in the following cumulative update of SQL Server.

Cumulative Update 1 for SQL Server 2014

Cumulative Update 9 for SQL Server 2012 SP1

Workaround


To work around the issue, reduce the number of data files in the database.

Status


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