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1answer
734 views

How to Prevent an Ever-Growing index file (MyISAM engine) From Causing Disk Fragmentation in Windows (NTFS partition)?

We have a keep-growing table which using MYISAM storage engine. Almost every half year, this table will crash, and need to be repaired. I checked the defragment result reported by windows ...
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0answers
44 views

Database fragmentation and heap SQL Server

We have critical performance issues with our production database (its around 300 gb size) We have run the following script for a few huge tables : DECLARE @db_id SMALLINT; DECLARE @object_id INT; ...
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0answers
63 views

Defragmentation of SQL Server 2008 indexes

I am having issues defragmenting indexes. I keep using the various defragmentation methods for defragmenting a SQL Server index such as DBCC INDEXDEFRAG and DBCC DBReIndex, but none seem to be ...
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2answers
953 views

Difference between partitioning and fragmentation [closed]

I'm trying to learn something about distributed databases and I stumbled upon the concepts of fragmentation and partitioning. It seems to me as if both do the same thing and produce similar results ...
0
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1answer
210 views

What is fragmenting my index on a table with stable traffic?

I am using Ola Hallengren's solution for optimizing indexes. I run it on Sunday every week. The index has had low fragmentation for the last 6 months and it hasn't needed reorganization. The way it's ...
0
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1answer
291 views

What is the significance of root and page level fragmentation in a clustered b-tree index?

In investigating fragmentation on some of our large tables in a SQL Server 2005 database, I was using a query based on sys.dm_db_index_physical_stats. The query returns a row for each level in the ...
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1answer
562 views

Model for Distributed Database [closed]

I want to design a model for a distributed database solution. Are there appropriate tools and approaches? How to include stereotypes for (horizontal) fragments?
0
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1answer
53 views

SQL Server : how can I measure database performance increase after index maintenance?

We are using a SQL Server 2005 database. We currently have no maintenance on our databases indexes. Some of our indexes are showing over 85% fragmentation when looking at the table ...
0
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1answer
616 views

When to rebuild and when to reorganize indexes [duplicate]

I have been trying to gather information about rebuilding and reorganizing indexes. From stackoverflow page (How Often should the indexes be re-build in sql-server DB?) i got this query : SELECT ...
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0answers
73 views

Measure fragmentation of a single index?

We are measuring the impact of different defrag approaches that we do one index at a time. How do we query to see fragmentation of a single index, by index name (or table + index). This is on SQL ...
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1answer
110 views

Database fragmentation [closed]

How can we find the list of fragmented objects in the database. And how much space we can reclaim by defragmenting those objects.