969352 wrote:You still have a lot of confusion about how it all fits together. You may have got it working, but you really don't understand WHY.
If the TNS alias matches the ORACLE_SID, then all is OK.
In my case , i mentioned uniq names. So i should use net sevice_name from tnsnames.ora
In my env training session : always using same name so i got confused. (sid_name , tns_alias_name , global_name)
Thank you very much sb;