How Can I Optimize C# Bulk Data Insertion into SQL Server for Faster Performance?

Fast Bulk Data Insertion in SQL Server with C#

Bulk data insertion into SQL Server can face performance challenges. This article explores potential optimization techniques using the SqlClient.SqlBulkCopy feature.

Question:

A C# client encounters significant performance bottlenecks when inserting大量数据 into a SQL Server 2005 database. The client utilizes SqlClient.SqlBulkCopy for data transfer, but seeks additional methods to accelerate the process.

Answer 1: Primary Key Removal

Consider temporarily dropping the primary key while inserting data and recreating it later. Bypassing key constraint checks can significantly reduce disk IO overhead and improve insertion speed.

Answer 2: Temporary Table Insertion

Inserting data into a temporary table with the same schema and periodically transferring it to the main table can reduce the overall table size during insertion. This avoids creating additional overhead associated with a large table size.

Additional Tips:

• Use the NOCHECK table hint to disable row count validation during bulk operations.
• Employ the TABLOCK hint to prevent concurrent table modifications during data insertion.
• Explore nonclustered primary key indexes to avoid unnecessary overhead associated with clustered indexes during data import. However, retain the clustered index for sequential data access when the import is complete.

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