SHRINK DATA FILE(mdf and log files)

I am shrinking the temp_db file from 30GB. I want to know what effect it can make to my performance. Bascally i need to know why temp_db is used and  why so much space was alloctated to it initalliy. Some ex-dba has done that.

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pg_indiaAsked:
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arbertCommented:
Temp_Db is used whenever temporary tables are created or whenever someone does large sorts.  Everytime you restart SQL Server tempdb is recreated, but it doesn't hurt to shrink it once in a while if you don't restart the server that often.

Of course, any time you shrink ANY database, it does have an affect on the server because of the extra IO that's involved.

Brett
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yuniarCommented:
TempDB database size is usually set base on how much space is needed for processing using temporary table. it seems that your setting is too big. you can decrease your tempdb database from SHRINK database option and set file growth to 10% for tempdb database setting
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pg_indiaAuthor Commented:
Thanks you all for your views and experts comments.

I want to know what effect it can make to my performance???
Now that temporary tables are used to store in temp_db shrinking it will make it slower? I mean suppose i have shrinked it After shriking it will reduce the speed of temp_db file??


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arbertCommented:
You're only going to take a "hit" while the shrink is happening.  You could experience a little bit of lock contention and IO waits.  After the shrink there should be no bad affects (unless for some reason the tempdb has to grow again and then you can get bad performance because of the auto grow and any fragmentation that ocurrs because of it).

Brett
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