SqlBulkCopy Tutorial
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SqlBulkCopy BulkCopyTimeout


Number of seconds maximum for a batch before it times out.

  • Type: System.Int32
  • Default Value: 30
  • Note: A value of 0 indicates the SqlBulkCopy can wait forever


using (SqlBulkCopy bulkCopy = new SqlBulkCopy(connectionString))
    // SET BulkCopyTimeout value.
    bulkCopy.BulkCopyTimeout = 300;

    bulkCopy.DestinationTableName = "TheDestinationTable";


  • Higher is better!

Higher is better!

  • Recommended BulkCopyTimeout Value: 300

Ensure to set the BulkCopyTimeout to at least 3x of the time the SqlBulkCopy need to complete the transaction.

If the operation may take up to 20s, specify a value of at least of 60s.

You don’t know in one year what could happen! A file importation that started small may have growth to millions of rows. There is nothing worse than an application crashing in production because of a Timeout exception occured!