https://www.progress.com/tutorials/odbc/connect-to-oracle-database-from-sql-server-linked-server
Connect to Oracle database from SQL Server Linked Server
Tutorial on Connecting to Oracle database from SQL Server Linked Server
connect to oraclesql serverdatabaselinked
https://www.jetbrains.com/help/datagrip/cannot-connect-to-oracle-with-oci.html
Cannot connect to Oracle with OCI | DataGrip Documentation
Troubleshooting steps to take to resolve the issue.
connect to oraclecannotocidatagripdocumentation