<div>
The size of the database or the size of the log? Of the log is rather normal as quite some changes have been made to the database.
</div>


The size of the database or the size of the log? Of the log is rather normal as quite some changes have been made to the database.

<div>
Database itself. I didn't migrate the log. I actually detached the 2007 database and attached it to a new instance without a log and upgraded it (new log was created).
</div>


Database itself. I didn't migrate the log. I actually detached the 2007 database and attached it to a new instance without a log and upgraded it (new log was created).

<div>
I confirmed elsewhere that this is a normal behavior.
</div>


I confirmed elsewhere that this is a normal behavior.

<div>
Where did you get it confirmed?
</div>


<div>
<div class="content wysiwyg-content">
I migrated/upgrade one of my SP 2007 databases to SP 2010 using the database attach method. I had no errors during the upgrade process but the size of the database grew from 10gb to 17gb - is it normal? 
</div>
</div>


I migrated/upgrade one of my SP 2007 databases to SP 2010 using the database attach method. I had no errors during the upgrade process but the size of the database grew from 10gb to 17gb - is it normal? 

Database size after database attach migration

Microsoft Sharepoint is a software platform and family of software products used for collaboration and web publishing combined. These capabilities include developing web sites, portals, intranets, content management systems, search engines, wikis, blogs, and other tools for business intelligence and collaboration. SharePoint has a Microsoft Office-like interface, and it is closely integrated with the Office suite.