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sp_helpfile & size

Posted on 2011-02-25
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Last Modified: 2012-05-11
the size mentioned for the index file in sp_helpfile is not accurate. Is this what it began with? and apparently, there has been growth?
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Question by:anushahanna
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6 Comments
 
LVL 40

Expert Comment

by:lcohan
ID: 34982655
You could try a before that:

DBCC UPDATEUSAGE
(   { database_name | database_id | 0 }
    [ , { table_name | table_id | view_name | view_id }
    [ , { index_name | index_id } ] ]
) [ WITH [ NO_INFOMSGS ] [ , ] [ COUNT_ROWS ] ]


http://msdn.microsoft.com/en-us/library/ms188414.aspx
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LVL 6

Author Comment

by:anushahanna
ID: 34982669
good idea- can i run this on a busy system in production, or should wait till maintenance window?
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LVL 17

Accepted Solution

by:
dbaSQL earned 1000 total points
ID: 34982676
It should be correct.  Per BOL sp_helpfile
Returns the physical names and attributes of files associated with the current database. Use this stored procedure to determine the names of files to attach to or detach from the server.


possibly run DBCC UPDATEUSAGE
0
Will your db performance match your db growth?

In Percona’s white paper “Performance at Scale: Keeping Your Database on Its Toes,” we take a high-level approach to what you need to think about when planning for database scalability.

 
LVL 17

Expert Comment

by:dbaSQL
ID: 34982690
Maintenance window is best.  See best practices in BOL:


Best Practices
Always run DBCC UPDATEUSAGE after upgrading a database from SQL Server 2000. The page and row counts are corrected and are maintained thereafter.


Do not run DBCC UPDATEUSAGE routinely for databases created in SQL Server 2005 or higher or on upgraded databases that have been corrected once by using DBCC UPDATEUSAGE. Because DBCC UPDATEUSAGE can take some time to run on large tables or databases, it should not be used only unless you suspect incorrect values are being returned by sp_spaceused.


Consider running DBCC UPDATEUSAGE routinely (for example, weekly) only if the database undergoes frequent Data Definition Language (DDL) modifications, such as CREATE, ALTER, or DROP statements.

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LVL 40

Assisted Solution

by:lcohan
lcohan earned 1000 total points
ID: 34982701
I would NOT run it on live systems under load - please see below from BOL:

Do not run DBCC UPDATEUSAGE routinely for databases created in SQL Server 2005 or higher or on upgraded databases that have been corrected once by using DBCC UPDATEUSAGE. Because DBCC UPDATEUSAGE can take some time to run on large tables or databases, it should not be used only unless you suspect incorrect values are being returned by sp_spaceused.

Consider running DBCC UPDATEUSAGE routinely (for example, weekly) only if the database undergoes frequent Data Definition Language (DDL) modifications, such as CREATE, ALTER, or DROP statements.

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LVL 6

Author Comment

by:anushahanna
ID: 34982804
thanks very much.
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