Transaction Log Analysis

Michael Swart shows how to dig into the transaction log to trace down those WRITELOG waits:

WRITELOG waits are a scalability challenge for OLTP workloads under load. Chris Adkin has a lot of experience tuning SQL Server for high-volume OLTP workloads. So I’m going to follow his advice when he writes we should minimize the amount logging generated. And because I can’t improve something if I can’t measure it, I wonder what’s generating the most logging? OLTP workloads are characterized by frequent tiny transactions so I want to measure that activity without filters, but I want to have as little impact to the system as I can. That’s my challenge.

Check out the entire post, as this is a good exercise in investigating busy transactional systems.

Related Posts

Wait Stats And Missing Indexes

Arthur Daniels explains that missing indexes can cause high wait stat counts to appear: At first, this statement might sound a bit confusing. Usually, we expect wait statistics to show us what a query is waiting on, whether it’s waiting on memory, loading pages from disk, or any of the other numerous wait types.Once you […]

Read More

Monitoring Entity Framework

Grant Fritchey loves Entity Framework: Yes, Entity Framework will improve your job quality and reduce stress in your life. With one caveat, it gets used correctly. That’s the hard part right? There is tons of technology that makes things better, if used correctly. There are all sorts of programs that make your life easier, if […]

Read More

Categories

April 2016
MTWTFSS
« Mar May »
 123
45678910
11121314151617
18192021222324
252627282930