DIS has a built-in report which gives you this information. If you need it as a SAS table then you'll have to query SAS metadata.
Googling I found here a discussion with such code which has been marked as solved.
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Need to connect to databases in SAS Viya? SAS’ David Ghan shows you two methods – via SAS/ACCESS LIBNAME and SAS Data Connector SASLIBS – in this video.