The Oracle Smart View for Office installer uses the language set in the Format field of the Windows Region and Language dialog box, Formats tab. This language also becomes the default language when running Smart View.
After installation, anytime you change the Smart View language setting (Options dialog box, Advanced tab), Smart View remembers the new setting on each subsequent launch of Excel.
To return Smart View to the default language, you can use either of the following methods in the Options dialog box, Advanced tab:
Click the Reset button.
Select the first option in the Language drop-down list. This is always Default, which is the language specified in the Region and Language dialog box, Formats tab
After uninstalling and then reinstalling, Smart View reverts to the language specified in the Windows Region and Language dialog box, Formats tab, and not the last language specified in the Smart View Options dialog box, Advanced tab.