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 Reindex Question
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judes
Starting Member

3 Posts

Posted - 09/28/2007 :  15:53:49  Show Profile  Click to see judes's MSN Messenger address  Reply with Quote
I don't understand why this table does not go to 100% Scan Density after either a DBCC Reindex or DBCC Indexdefrag. Can someone help me understand?

DBCC SHOWCONTIG scanning 'wf_wftrn_tbl' table...
Table: 'wf_wftrn_tbl' (463913320); index ID: 1, database ID: 18
TABLE level scan performed.
- Pages Scanned................................: 8
- Extents Scanned..............................: 2
- Extent Switches..............................: 1
- Avg. Pages per Extent........................: 4.0
- Scan Density [Best Count:Actual Count].......: 50.00% [1:2]
- Logical Scan Fragmentation ..................: 0.00%
- Extent Scan Fragmentation ...................: 50.00%
- Avg. Bytes Free per Page.....................: 2215.4
- Avg. Page Density (full).....................: 72.63%

Kristen
Test

United Kingdom
22431 Posts

Posted - 09/28/2007 :  15:56:44  Show Profile  Reply with Quote
Too few pages. Reindex to improve Scan Density is only going to make an impact for a table quite a bit larger than this one

Kristen
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Frank Kalis
Constraint Violating Yak Guru

Switzerland
413 Posts

Posted - 09/28/2007 :  15:59:20  Show Profile  Visit Frank Kalis's Homepage  Reply with Quote
This might also help understanding: http://www.microsoft.com/technet/prodtechnol/sql/2000/maintain/ss2kidbp.mspx

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Frank Kalis
Microsoft SQL Server MVP
Webmaster: http://www.insidesql.de
Heute schon gebloggt? http://www.insidesql.de/blogs
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judes
Starting Member

3 Posts

Posted - 09/28/2007 :  16:05:27  Show Profile  Click to see judes's MSN Messenger address  Reply with Quote
Kristen & Frank,
Thanx!

Effect of reindexing a database that is doing transactional replication? Should Replication be stopped 1st?
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rmiao
Flowing Fount of Yak Knowledge

USA
7266 Posts

Posted - 09/28/2007 :  22:39:55  Show Profile  Reply with Quote
Don't have to stop replication.
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rinov
Starting Member

1 Posts

Posted - 03/29/2013 :  11:06:46  Show Profile  Reply with Quote
Excuse me,
i have a problem with big table,
it is possible that a query does not return data if an index or data file is corrupt?

Thanks
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