I am having issues publishing from ArcMap 10.3 Do the files I am trying to publish through ArcMap 10.3 on my hard drive have to be in the default database in order to publish it to Portal?
https://community.esri.com/community/gis/enterprise-gis?sr=search&searchId=f4bb5581-415d-4454-bc2a-9... https://community.esri.com/community/gis/enterprise-gis/arcgis-for-server?sr=search&searchId=ad5dad3...
Publish maps? or metadata? not clear
What is the issue/error message you are getting?
In case it's a Permission issue, Take a Look at how to Make your data accessible to ArcGIS Server—Documentation (10.3 and 10.3.1) | ArcGIS for Server
Do the files I am trying to publish through ArcMap 10.3 on my hard drive have to be in the default database in order to publish it to Portal?
No.