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Asked: 2026-05-10T13:29:34+00:00

What is it? How do I implement connection pooling with MS SQL? What are

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  • What is it?
  • How do I implement connection pooling with MS SQL?
  • What are the performance ramifications when
    • Executing many queries one-after-the other (i.e. using a loop with 30K+ iterations calling a stored procedure)?
    • Executing a few queries that take a long time (10+ min)?
  • Are there any best practices?
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  1. Connection pooling is a mechanism to re-use connections, as establishing a new connection is slow.

    If you use an MSSQL connection string and System.Data.SqlClient then you’re already using it – in .Net this stuff is under the hood most of the time.

    A loop of 30k iterations might be better as a server side cursor (look up T-SQL cursor statements), depending on what you’re doing with each step outside of the sproc.

    Long queries are fine – but be careful calling them from web pages as Asp.Net isn’t really optimised for long waits and some connections will cut out.

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