On vrijdag, feb 28, 2003, at 17:14 Europe/Amsterdam, Farren Minns wrote:

Hi Again

Regarding the TSM DB, wouldn't the 'Used' and 'Total Usable Pages' figures
help to point to a fragmentation problem.


The output fro our DB is as follows:-

Available Space (MB): � � � � � � � � � � � � 10,000
� � � �Assigned Capacity (MB): � � � � 8,500
� � � �Maximum Extension (MB): � � � � 1,500
� � � �Maximum Reduction (MB): � � � � 1,492
� � � � � � Page Size (bytes): � � � � 4,096
� � � � � �Total Usable Pages: � � � � 2,176,000
� � � � � � � � � �Used Pages: � � � � 1,787,528
� � � � � � � � � � �Pct Util: � � � � 82.1
� � � � � � � � Max. Pct Util: � � � � 82.5
� � � � � � �Physical Volumes: � � � � 2
� � � � � � Buffer Pool Pages: � � � � 32,768
� � � � Total Buffer Requests: � � � � 10,278,342
� � � � � � � �Cache Hit Pct.: � � � � 98.88
� � � � � � � Cache Wait Pct.: � � � � 0.00



Our database is 8500Mb assigned, and 82.1% utilised. So how do the figures
of '1,787,528 pages used' and '2,176,000 Usable Pages' work in this case.
If we have used 81% percent of 8500, our usable pages should be much lower
than used pages shouldn't it? Or am I missing something?


Thanks again

Farren Minns - John Wiley & Sons Ltd



1.788 / 2.176 ~= 0.82, so that sort of works out. Each db page is 4k in size, so 2,176,000 * 4k = 8704000000 with will probably work out to about 8.5G, zo no problem ther either. Oh and uasble = free + used ;-)

--
Met vriendelijke groeten,

Remco Post

SARA - Stichting Academisch Rekencentrum Amsterdam    http://www.sara.nl
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