Sql-server – SQL Rebuild Index, Recovery Model, and db log filesize

Josh,

This is a very common task for all DBAs and the right answer is NOT the same for every one and for each server. As lot of other things, it depends on what you need.

Most definitely you don't want to run "Shrink Database" as already suggested. Its EVIL to performance and the below ref will show you why. It causes disk and as well as index fragmentation and this can lead to performance issues. You are better off by pre-allocationg a big size for the data and log files so that autogrowth will NOT kick-in.

I didn't understand your #2. selected tables full backup. Can you elaborate more on this?

Coming to Index reorganize, update statistics and index rebuilds, you need to be careful on how you do this otherwise you will end up using more resources and also end up with performance issues.

When you rebuild indexes the statistics of the indexes are updated with fullscan but if you do update statistics after that, then those will be updated again with a default sample (which depends on several factors, usually 5% of the table when table size > 8 MB) which may lead to performance issues. Depending on the edition you have, you may be able to do online index rebuilds. The right way of doing this activity is check the amount of fragmentation and depending on that either do index rebuild or index reorganize + update statistics. And also you may want to identify which tables need to update stats more frequently and try to update stats more often.

Maintenance Plans are OK but its hard to get the best out of them doing these customizations unless you can login to SSIS and tweak the MP's. that's why I prefer NOT to use them and use Ola Hallengren's free scripts that are more robust than MP's. Also, I would recommend to catch up on the referenced article by Paul Randal on this topic.

Ref: http://technet.microsoft.com/en-us/magazine/2008.08.database.aspx

This is NOT a comprehensive answer to your question but a good starting point. HTH and let us know if you have any additional questions/comments.

Why are you rebuilding the indexes? Do you have any evidence that the rebuild is required/needed/beneficial? Have you considered when to use Reorganize vs. Rebuild?

Consider using one of the many index maintenance scripts like the ones from Ola Hallengren or Michelle Ufford. These scrips have intelligence in them to do appropriate maintenance action according to the index fragmentation and will reduce the offline duration by rebuilding only when truly required (hopefully never).

IF a rebuild is needed then there is nothing you can do w/o going to an Enterprise Edition and using online index rebuild.

Oh, one more thing: do not shrink the log. You are only causing it to take more time when it grows back.