What is the error in Admin Server log ?? Which version are you using?
I am using OBIEE V188.8.131.52.0. Following mentioned is the detailed error:
The following exception occurred:
error:java.io.FileNotFoundException: MDS-00013: no metadata found for metadata
not found in MetadataStore : [store-type=DefaultMetadataStore app-name=em
I am getting the same error, where you able to solve the problem. I have also tried deleting temp folder contents in AdminServer, obi_server and odi_server and restarted all services, but the issue remains.