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Posted by GlennThomas5 on 06/19/06 18:58
if you look at your database ID's, they are different. did you run
this on 2 different databases?
Raziq Shekha wrote:
> Hi Folks,
>
> SQL Server 2000 SP3 on Windows 2000. I have a database on which I ran
> the command :
>
> dbcc dbreindex ('tablename')
> go
>
> for all tables in the database. Then I compared the dbcc showcontig
> with all_index output from before and after the reindex and on the
> largest table in the database I found this. First output is prior to
> reindex:
>
>
> Table: 'PlannedTransferArchive' (1975014117); index ID: 1, database ID:
> 7
> TABLE level scan performed.
> - Pages Scanned................................: 184867
> - Extents Scanned..............................: 23203
> - Extent Switches..............................: 23324
> - Avg. Pages per Extent........................: 8.0
> - Scan Density [Best Count:Actual Count].......: 99.07% [23109:23325]
> - Logical Scan Fragmentation ..................: 11.13%
> - Extent Scan Fragmentation ...................: 35.46%
> - Avg. Bytes Free per Page.....................: 60.0
> - Avg. Page Density (full).....................: 99.26%
>
>
> Second output is from after the reindex:
>
>
>
> DBCC SHOWCONTIG scanning 'PlannedTransferArchive' table...
> Table: 'PlannedTransferArchive' (1975014117); index ID: 1, database ID:
> 8
> TABLE level scan performed.
> - Pages Scanned................................: 303177
> - Extents Scanned..............................: 37964
> - Extent Switches..............................: 42579
> - Avg. Pages per Extent........................: 8.0
> - Scan Density [Best Count:Actual Count].......: 89.00% [37898:42580]
> - Logical Scan Fragmentation ..................: 43.19%
> - Extent Scan Fragmentation ...................: 24.78%
> - Avg. Bytes Free per Page.....................: 75.1
> - Avg. Page Density (full).....................: 99.07%
>
>
> Following are my concerns:
>
> The following numbers are all higher after reindex than before reindex:
>
> pages scanned, extent switches, logical scan fragmentation, avg bytes
> free per page, avg page density.
>
> scan density is lower after reindex than before reindex
>
> Seems to me that the numbers that are higher after reindex should be
> lower and numbers that are lower after reindex should be higher? I
> didn't specify the fill factor in the dbcc reindex command so it should
> have used the default fill factor. The fill factor has never been
> changed on this machine.
>
> Am I missing something?
>
> Thanks,
> Raziq.
>
> *** Sent via Developersdex http://www.developersdex.com ***
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