The tag has no wiki summary.

learn more… | top users | synonyms

18
votes
3answers
11k views

Why is my database still fragmented after I rebuilt and reindexed everything?

I have a database which I tried to defragment all the tables at once by running this T-SQL: SELECT 'ALTER INDEX all ON ' + name + ' REORGANIZE;' + CHAR(10) + 'ALTER INDEX all ON ' + ...
2
votes
1answer
710 views

Optimising a Database Shrink (in terms of speed and reducing fragmentation)

We have a large database that has had a lot of older data stripped out, leaving primary datafile (all objects are currently in the primary filegroup) of about 80Gb containing a little less than 20Gb ...
5
votes
3answers
829 views

SQL Azure Fragmentation / Database Size

I have a database running on SQL Azure that is currently 280mb. It is a test database for a system that we're going to be putting into production soon so the data frequently gets deleted in batches ...
7
votes
1answer
560 views

B-tree node split strategy in SQL Server for monotonically increasing value

Consider a B-tree index on a value that will always increase monotonically, e.g. a column of type IDENTITY. With a conventional B-tree implementation, whenever a node is full, it will be split 50%/50% ...
2
votes
3answers
2k views

SQL Server Index Fragmentation

When should you rebuild an index? vs reorganize? What index fragmentation value is considered healthy?