ORA-12514: TNS:listener does not currently know of service requested in connect descriptor

Hello,

I am on an Oracle Engineered System (X8) and using Oracle 19.0.0.0.0.

While trying to connect to a pdb directly from sqlplus, I am getting the following error:

ORA-12514: TNS:listener does not currently know of service requested in connect descriptor.

The name of my pdb = dev

From the pdb, when I run the following query it returns the following:

select name,pdb,con_id from cdb_services order by con_id;

Name           pdb    con_id

dev              dev     3

dev.server.com  dev     3

I am taking this to mean I can either connect to the pdb using @dev or @dev.server.com.