Blog Archives

a section on indexing and performance tuning.

PREEMPTIVE_OS_GETPROCADDRESS and xp_create_subdir

Here is a discovery that I made using the Database Health Monitor historic wait monitoring, on a server with slow storage where the backups were being written. If you are seeing excessive waits on the PREEMPTIVE_OS_GETPROCADDRESS wait type and xp_create_subdir is

Posted in Performance, Performance Tuning Tagged with: ,

Max Server Memory – SQL Server

Max Server Memory Setting Explained If you have more memory than your database and applications on the SQL Server will ever use than this is not a problem, but when you run into memory constraints this setting is much more

Posted in Performance, Server Health Tagged with: , , , , , , ,

What is a Page Split

Tables, and indexes are organized in SQL Server into 8K chunks called pages. If you have rows that are 100 bytes each, you can fit about 80 of those rows into a given page. If you update one of those

Posted in Performance, Performance Tuning Tagged with: , , , , , , ,

Error Log: I/O is Frozen On Database

I/O is Frozen on Database. You are scanning your SQL Server Logs and discover the following error messages. There may be a long list of them, one frozen and one resumed for each database on your SQL Server. I/O Is Frozen

Posted in Performance, Performance Tuning Tagged with:

Steps to Improve ETL Performance Using SSIS

Some of the biggest performance tuning wins that I have had over my career have been related to performance tuning queries that are being called from SSIS. So often the actual query performance gets overlooked in the SSIS environment. A

Posted in Performance Tuning, SSIS Performance Tagged with: , ,

Statistics IO for Performance Tuning in SSMS

Statistics IO and Statistics Time is another SQL Server Performance Tuning Tip to help you better understand performance bottlenecks. Have you ever wanted to know exactly how long it took for a query to run? Have you ever wondered how many

Posted in Performance, Performance Tuning Tagged with: , , ,

Using Statistics Time for Performance Tuning in SSMS

Statistics IO and Statistics Time are another SQL Server Performance Tuning Tip to help you better understand performance bottlenecks. Have you ever wanted to know exactly how long it took for a query to run? Have you ever wondered how

Posted in Performance, Performance Tuning Tagged with: ,

Understanding your Wait Statistics

SQL Server Performance Tuning Tips – Wait Statistics Wait statistics are one of commonly overlooked ways to quickly find out what is causing your SQL Server to be slow. One of the reasons that they are commonly overlooked is that

Posted in Database Health, Performance, Server Health Tagged with: , , , ,

Deadlock and Trace Flags 1204 and 1222

When you are looking for deadlocks there are, like most things in SQL Server, more than one way to find the deadlocks. This article is specifically focused on using the SQL Server ERRORLOG file located in the LOG directory for

Posted in DBA, Performance Tuning Tagged with: ,

Difference Between TRUNCATE TABLE and DELETE FROM Table

Most DBAs know the usual difference between TRUNCATE and DELETE FROM, however one not so obvious difference between the two is how things are handled if the table is corrupt. For instance, if you look at the corrupt database from

Posted in Corruption, Performance Tuning Tagged with: , ,

SQL Server Performance Tuning

Need help with SQL Server Performance Tuning, contact Steve at Stedman Solutions, LLC for help, or take a look at the performance tuning page at the SteveStedman.com blog. We can help with tuning a single query or with figuring out why your SQL Server is running slow. Free 30 minute consultation.

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