Introduction Instead of going straight into the topic of the Query Store, I would like to start this Stairway Series by mentioning a few performance tuning scenarios that are very common to production DBAs. I think most of us have been in one of these situations at some time: An application experiencing slowness after a […]
2019-05-13
2,983 reads
The IGNORE_DUP_KEY option for unique indexes specifies how SQL Server responds to an attempt to INSERT duplicate values: It only applies to tables (not views) and only to inserts. Any insert portion of a MERGE statement ignores any IGNORE_DUP_KEY index setting.
2019-04-05
Far too often, an indexed view is created without consideration for the costs of the indexed view. In this article, Jason Brimhall covers some of the more important costs that are frequently overlooked when considering an indexed view as a performance panacea.
2019-04-05
Kevin Feasel provides three SSMS keyboard shortcuts for the sp_whoisactive calls he uses most often in day-to-day database development and query tuning work.
2019-04-02
The contents of the SELECT, WHERE and ORDER BY clauses are all a matter of determining the story you need to tell. I was asked to look into an issue recently where a 40-core SQL Server instance was fully utilizing a one node over all others...
2019-03-30
It’s surprisingly useful to know the number of active sessions on each of the databases on your servers. With a bit of SQL, we can create a custom metric to track how many sessions recently performed reads or writes on a database.
2019-03-30
I love the questions I get when presenting: Can You Force a Parallel Plan in Query Store. I haven’t a clue. The trick I think is going to be in setting up the test. Let’s try it out.
2019-03-30
Everything can be fixed with a query hint (*cough* directive), right? If a certain process is consistently causing deadlocks, a simple ROWLOCK hint can be added to prevent it, right?
2019-03-30
Previously Gail Shaw looked at using Query Store to compare execution plans, but it’s not the only way that two execution plans can be compared. The other method requires a saved execution plan and the Management Studio execution plan viewer.
2019-03-30
In this webcast, Tim Smith takes a look at various tips and tricks to assist you with performance tuning your SQL Server databases. Knowing how to find and resolve problems is key to improving performance, so join him to learn how to optimize your systems
2018-08-15
4,840 reads
Planning to upgrade/migrate requires a fair amount of prep work. Some of that prep...
This is the first in a series of posts about gatekeeping in Information Technology...
By MUTHUKKUMARAN KALIYAMOORTHY
Requirement: Remove a node from one of... [[ This is a content summary only. Visit...
Hi. I am wanting to know if there is a way to make this...
Has anybody here taken the 98-364 exam?
Comments posted to this topic are about the item Stairway to Database Containers Level...
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