[Webinar] Streamline your web hosting managementRegister Today

x
?
Solved

.MDF File Sizes

Posted on 2004-04-15
3
Medium Priority
?
2,790 Views
Last Modified: 2012-05-04
I have a database that was roughly 230 GB large.  I deleted all tables in the database and the .mdf file was still 230 GB large.  Does the delete from table, truncate from table, and/or the drop table commands not physically remove the data from the .mdf file?  I ended up detaching the database and deleting it to regain the space but I am concerned over the implications that this could have on other databases that I have.  Any advise would be appreciated.
0
Comment
Question by:xKilent
3 Comments
 
LVL 44

Accepted Solution

by:
Arthur_Wood earned 250 total points
ID: 10834112
what you need to do is to SHRINK the database.  This is the SQL Server equivalent of COMPACTing an Access MDB.  What is happeing is this.  As data is added to your Tables, they grow, and the MDF grows.  When you delete data, or Tables, the MDF does NOT automatically reduce in size (aftrer all, you may wnat to add more data, and the space is already trhere, to accomdate that).

In Enterprise Manager, open the Databases Tab, then right click on the Database entry, then choose Shrink Database...

AW
0
 
LVL 3

Expert Comment

by:debi_mela
ID: 10835228
"I ended up detaching the database and deleting it to regain the space but I am concerned over the implications that this could have on other databases that I have.  Any advise would be appreciated. "

Does this mean that you don't need this database anymore.  If so, you can detach and delete this .MDF and corresponding .LDF file, it will not affect other databases.
  If not, as suggested earlier you need to  shrink the database and truncate empty space.

-Deb.
0
 
LVL 50

Expert Comment

by:Lowfatspread
ID: 10838465
was it just your MDF that was big , what size was your log file?

you need to consider scheduling regular shrink / optimisation jobs on databases of this size...

what version and edition of SQL server..?



PS there is a separate topic area for SQL SERVER related questions
0

Featured Post

Free Tool: ZipGrep

ZipGrep is a utility that can list and search zip (.war, .ear, .jar, etc) archives for text patterns, without the need to extract the archive's contents.

One of a set of tools we're offering as a way to say thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

In this blog post, we’ll look at how using thread_statistics can cause high memory usage.
MSSQL DB-maintenance also needs implementation of multiple activities. However, unprecedented errors can hamper the database management. In that case, deploying Stellar SQL Database Toolkit ensures fast and accurate database and backup repair as wel…
This is a high-level webinar that covers the history of enterprise open source database use. It addresses both the advantages companies see in using open source database technologies, as well as the fears and reservations they might have. In this…
In this video, Percona Solutions Engineer Barrett Chambers discusses some of the basic syntax differences between MySQL and MongoDB. To learn more check out our webinar on MongoDB administration for MySQL DBA: https://www.percona.com/resources/we…
Suggested Courses

591 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question