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2 votes
3 answers
2k views

Update statistics more often and stop defragmenting indexes

I have several vendor databases that have most (99%) of the tables clustered on GUIDs. Currently we are rebuilding the tables every weekend. Most tables are 80% or more fragmented by this time. ...
James Rhoat's user avatar
  • 1,567
4 votes
3 answers
7k views

ONLINE vs OFFLINE index rebuilds

I am looking for an opinion, which I know is usually frowned upon, so my apologies in advance. I'm currently in an environment where every instance is SQL Server enterprise edition. The maintenance ...
Reaces's user avatar
  • 2,631
0 votes
3 answers
2k views

index rebuild/reorganize frequency

I am a dba by accident. I am doing index rebuild/reorganize. I would love to use some scripts once I become comfortable doing these tasks. I did go through some of the forum pages regarding this ...
Info23's user avatar
  • 163
1 vote
1 answer
73 views

Why did my indexes drop in size?

I've got the following SP which I wrote to calculate the size of all the tables on my database SELECT name,dbo.nice(rows) as [rows], dbo.nice(CAST(total-indexes as DECIMAL)/1024) as [data (...
roryok's user avatar
  • 113
5 votes
1 answer
3k views

Disadvantages of reorganizing all tables nightly

I consider scheduling a SQL Server job that reorganizes all tables nightly. We don't have enterprise, so we cannot rebuild online (this means we need to reorganize). We also don't want to invest too ...
usr's user avatar
  • 7,360
8 votes
2 answers
2k views

Defragmentation - Rebuilding Indexes SQL Server 2005

I'm researching defragmenting databases and it seems the following SQL statement is what I'm looking for: ALTER INDEX ALL ON mytablename REBUILD WITH(ONLINE = ON) When I pull the info from sys....
Rivka's user avatar
  • 209
7 votes
4 answers
4k views

How does SQL Server reduce index fragmentation?

If a user never runs REBUILD or REORGANIZE on their database, does SQL Server still somehow defragment the indexes? MSDN suggests that if an index is over 30% fragmented, it is recommended to run ...
dsum's user avatar
  • 729
4 votes
3 answers
5k views

SQL Server Index Fragmentation

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