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performance Simple and Full

Posted By:      Posted Date: December 04, 2010    Points: 0   Category :Sql Server

Hello all,

It is very basic question, today because of some situation myself and my friend started arguing about Performance of recovery models.


I proposed Full recovery model have good performance and my friend proposed Simple recovery have good performance.


Can some recommend us which recovery model has good performance?



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Is this load full or matching one only... coz of need to know performance



This my Two Table i have one doubt...

For my first table i have select Top 2 from Employee_info 

and second table itz just selct * from MDEp..

What my doubt is on loading the above report?

Is this load all the record from MDep or just matching one based on Employee_info..?

Full text performance of a certain query

I am doing a full text query on a very simple table and when I include the search term "y5v" in the conditions it slows the query down like 8 to 1. The table is defined as: SET ANSI_NULLS ON GO SET QUOTED_IDENTIFIER ON GO SET ANSI_PADDING ON GO CREATE TABLE [dbo].[tblTextSrchData]( [intItemId] [int] NOT NULL, [srchTxt] [varchar](max) NOT NULL, CONSTRAINT [PK_tblTextSrchData] PRIMARY KEY CLUSTERED ( [intItemId] ASC )WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY] ) ON [PRIMARY] Here is the query: SELECT II.intItemID, KEY_TBL.[RANK] as Score FROM tblItems II INNER JOIN CONTAINSTABLE(dbo.tblTextSrchData,srchTxt, '("capacitor" OR FORMSOF(INFLECTIONAL, "capacitor") OR "capacitor*") AND ("active" OR FORMSOF(INFLECTIONAL, "active") OR "active*") AND ("y5v" OR FORMSOF(INFLECTIONAL, "y5v") OR "y5v*")') KEY_TBL ON KEY_TBL.[KEY] = II.intItemID If I take any of the additional search terms out it improves performance.  If I remove the yv5 search term the results are returned in less than a second. What seems to be the problem is for some reason when I add yv5 it starts doing these sorts after the full text matching.  These sorts take most of the time.  I'm not sure

Simple Recovery Model Yet Transaction Log Is Full

Hi there, There's a database which has been configured with SIMPLE recovery model but yet the transaction log will grow and fill up the disk at times. Is there anything one can do to prevent the log from filling up the disk? Thanks in advance.

Is a database online when it is changed from full to simple recovery model?



We have some databases that occaisally have very large ldf files and I have learned that the best way to shrink the ldf file is to change the backup mode to simple, shrink the log file, convert it back to full and do a full database backup so that the log file backups will run again. My question is during this process is the database available to the end users? When you guys do this do you feel it is nessesary to let the end users know or will they not notice what is going on?



Thanks! Kevin

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