Basic Customization > Windchill Customization Basics > The Windchill Development Environment > Property Files > wt.properties file > tools.properties file
  
tools.properties file
• wt.generation.sql.dir, which specifies where SQL scripts will be generated.
• wt.generation.sql.xxxTablesSize, which sets default sizes for tables.
* 
Because tools.properties is contained within the SystemGeneration.jar, user overrides to these properties are placed in codebase\user.properties.