You can enable Smart View from Add-ins in Excel Options. This method is useful in cases where Smart View is disabled unintentionally, through a Microsoft Smart View error.
To enable Smart View for all Microsoft Office applications (including Outlook):
Perform the task appropriate for your Office version:
2013 and 2010: Go to File, then Options, and then Add-ins.
2007: Click the Office button in the top left corner of Excel, then select Excel Options, and then Add-ins.
In COM Add-ins, select the check box to enable the Oracle Smart View for Office add-in, and click OK.