Maintaining a database is an important job of the DBA role. One of the many maintenance tasks is ensuring that the disk does not fill up and your files are able to grow over time.
Designing a rock solid application and database can be difficult. New features and overlapping features mean that you’re able to accomplish a single task in many ways. For instance the numeric and decimal data types. Which should you use?Read More »
If you’ve read my blog, I’m sure by now you know that I have no love for GUI tools. I will say they are improving every day and maybe, just maybe, we will see the day when you can click happily away and do everything you want. Sadly, this is not the day.
A while back, SSMS added the “Missing Index” data to the graphical query plan. They even made it really easy to add.
Foreign keys are an interesting feature of relational databases. They help enforce data integrity, sometimes help improve performance by eliminating joins, and sometimes slow down DML operations (inserts, updates, and deletes).
I was building out a blog post about cardinality today and noticed that sys.dm_exec_query_stats was getting cleared my my Surface Pro 3 dev instance about every 30 to 60 seconds.
I opened object explorer to check if any jobs were running in SQL Agent that may be running DBCC FREEPROCCACHE
I was recently asked to help tune a stored procedure that has been historically taking between 55 and 60 seconds to complete. Overall the code wasn’t too complex but getting to the root cause did surprise me a bit.
If you’re a DBA or a developer chances are you’ve looked at a query plan or two. While looking at your plan you may have noticed that each operator has a cost. Did you know that the cost is measurable?
If you’re a DBA or database developer, chances are you will have to write or rewrite queries from time to time. Rewriting may be for new features or simply to improve the performance of existing code.
Let me start by saying that this isn’t your typical post about the Halloween problem. This is intended to describe a couple different performance problems you should be keenly aware of.