FIX: Poor performance on I/O when you execute select into temporary table operation in SQL Server 2012

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

Symptoms


Assume that you use Microsoft SQL Server 2012. When you perform select into temporary table operation, poor performance on I/O occurs in the system database tempdb.

Cause


The issue occurs because a select into temporary table operation causes eager write.

Resolution


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

Cumulative Update 1 for SQL Server 2012 SP2

Cumulative Update 10 for SQL Server 2012 SP1

Status


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