SQLServerCentral Article

SSC Clinic: Can Implementing "Optimize for Ad Hoc Queries" Boost Performance for the SQLServerCentral.com and Simple-Talk.Com SQL Servers?

With the introduction of the instance-level option “optimize for ad hoc workloads” in SQL Server 2008, DBAs have a tool to deal with a problem known as plan cache pollution, or plan cache bloat. It’s often caused when one-time use ad hoc queries are sent to SQL Server from Object-Relational Mapping (ORM) solutions, such as LINQ, NHibernate, or Entity Framework. The problem can prevent SQL Server from using its available memory optimally, potentially hurting performance.

External Article

SQL Server Prefetch and Query Performance

Prefetching can make a surprising difference to SQL Server query execution times where there is a high incidence of waiting for disk i/o operations, but the benefits come at a cost. Mostly, the Query Optimizer gets it right, but occasionally there are queries that would benefit from tuning.

External Article

A first look at SQL Server 2012 Availability Group Wait Statistics

If you are trouble-shooting an AlwaysOn Availability Group topology, a study of the wait statistics will give a pointer to many of the causes of problems. Although several wait types are documented, there is nothing like practical experiment to familiarize yourself with new wait stats, and Joe Sack demonstrates a way of testing the sort of waits generated by an availability group under various circumstances.

Blogs

Five Ways Redshift Serverless Quietly Eats Your Budget

By

It is Friday, the queries are running, and nobody is watching the bill. That...

A Career of Memories

By

Annabel retired from Redgate Software this week. Across most of my career at Redgate,...

Rethinking Index Maintenance: Why avg_fragmentation_in_percent Is Outdated and What You Should Do Instead

By

As a SQL Server DBA with years of experience tuning production environments, I’ve seen...

Read the latest Blogs

Forums

Midjourney, Healthcare?

By dbakevlar

Comments posted to this topic are about the item Midjourney, Healthcare?

Changes, Happiness, and a Few Tears

By Steve Jones - SSC Editor

Comments posted to this topic are about the item Changes, Happiness, and a Few...

BCP on Linux

By Steve Jones - SSC Editor

Comments posted to this topic are about the item BCP on Linux

Visit the forum

Question of the Day

BCP on Linux

When running bcp on Linux, what is the field terminator?

See possible answers