You create a database collation for the Japanese language locale in Microsoft SQL Server 2012 or SQL Server 2014. For example, you create a collation that's named Japanese_CI_AS. You create a table that contains Japanese characters in the table name. When you change the indexes of the table, an access violation occurs.


To resolve this problem, apply this update, and then enable trace flag TF9394. To enable trace flag TF9394, see the "More Information" section.

Cumulative Update information

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

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:


To work around this issue, re-create the objects by using named constraints that contain only English character sets.


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


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

Need more help?

Expand your skills
Explore Training
Get new features first
Join Microsoft Insiders

Was this information helpful?

What affected your experience?

Thank you for your feedback!