Solved

.MDF File Sizes

Posted on 2004-04-15
3
2,783 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
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
3 Comments
 
LVL 44

Accepted Solution

by:
Arthur_Wood earned 125 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: Path Explorer

An intuitive utility to help find the CSS path to UI elements on a webpage. These paths are used frequently in a variety of front-end development and QA automation tasks.

One of a set of tools we're offering as a way of saying 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

A Stored Procedure in Microsoft SQL Server is a powerful feature that it can be used to execute the Data Manipulation Language (DML) or Data Definition Language (DDL). Depending on business requirements, a single Stored Procedure can return differe…
This post contains step-by-step instructions for setting up alerting in Percona Monitoring and Management (PMM) using Grafana.
Video by: Steve
Using examples as well as descriptions, step through each of the common simple join types, explaining differences in syntax, differences in expected outputs and showing how the queries run along with the actual outputs based upon a simple set of dem…
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…

691 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