Create a Visual C + + project with vs2015, and after you write the build, a project_name is generated each time. vc.db files, and will become more and more larger as you work with modifications.
Project_Name. The vc.db is a new database of the SQLite backend for IntelliSense, equivalent to the previous *.SDF SQL Server Compact database. It is related to the IntelliSense, code recovery, and team local warehouse capabilities provided by VS2015, which is extremely fast when the solution is reloaded. If you do not need it, you can disable it and the file will not be generated.
This occurs after you install VS2015 Update 2. The Projectname.vc.db file is a new IntelliSense database that replaces the old PROJNAME.SDF database. You may also see a hidden projname.vc.vc.opendb file, a lock file, that indicates that dBASE is in use. But sooner or later you have to manually delete this file.
The Projectname.vc.db file is already available in the previous experimental phase and is now a formal application. It promises to be about the X2 acceleration of IntelliSense. The biggest change here seems to be the shift to another dBASE engine, now using SQLite instead of the SQL Compact.
Do not delete the file immediately, otherwise it will take a while to open the project next time. When you finish the project, continue and delete the file, it will no longer be used.
However, if you do not want to generate the file or you do not need to generate the file, you can cancel it in the following ways:
Set method: Tools – Options – Text Editor – c/c++– Advanced, set fallback position and warning to TRUE or disable database set to True so that the file is not generated.
Ext.: http://blog.csdn.net/u012611878/article/details/53574480
Visual Studio 2015 Auto-generated large file xxx.vc.db removal issues