I've found this solution:
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Pentaho Data Integration Tool A: To enable the option, open options dialog box by selecting Edit- >Options from the menu bar and check the display tool tip Q13: How to resolve the following error? Kettle.ERROR_ RDBMS access to transformation not allowed when repository type is 'files A:
open the settings.xml file located in the pentaho-solutions/system/kettle directory
1. Set the content of the repository.type element to rdbms. If you want to use a PDI repository.
2. Put the name of the repository you want to use in the repository.name element. Same as existing repository defined in PDI s repositories.xml file.
3. Set the repository.name element to the name of the repository user that is to connect to the repository.
4. Set the repository.password element to the password of the repository user.
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