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Asked: 2026-05-11T01:44:14+00:00

I’m performing a bulk insert with an ADO.NET 2.0 SqlBulkCopy object from a C#

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I’m performing a bulk insert with an ADO.NET 2.0 SqlBulkCopy object from a C# method into a MS SQL 2005 database, using a database user with limited permissions. When I try to run the operation, I get the error message:

Bulk copy failed. User does not have ALTER TABLE permission on table ‘theTable’. ALTER TABLE permission is required on the target table of a bulk copy operation if the table has triggers or check constraints, but 'FIRE_TRIGGERS' or 'CHECK_CONSTRAINTS' bulk hints are not specified as options to the bulk copy command.

I read some documentation and created the bulk copy object with the constructor that lets me specify such things:

    SqlBulkCopy bc = new SqlBulkCopy(         System.Configuration.ConfigurationSettings.AppSettings['ConnectionString'],         SqlBulkCopyOptions.FireTriggers & SqlBulkCopyOptions.CheckConstraints);

But this doesn’t change anything – I get the same error message as before. I tried fiddling with some of the other SqlBulkCopyOptions values but no luck. I really thought this would fix the problem, am I missing something?

I tested the procedure after granting ALTER on the table to my user, and the operation succeeded. However this is not an option for my situation.

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1 Answer

  1. Solved it! Looks like I need a refresher on flags enums. I was bitwise ANDing the enum values when I should have been ORing them.

    SqlBulkCopyOptions.FireTriggers & SqlBulkCopyOptions.CheckConstraints

    evaluates to zero (which is equivalent to SqlBulkCopyOptions.Default.)

    SqlBulkCopyOptions.FireTriggers | SqlBulkCopyOptions.CheckConstraints

    Worked correctly and allowed the bulk insert to complete.

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