ErrorMsg: ORA-12541: TNS:no listener

[maggie50]

What specifically is the corrective action for this error message?

ErrorSource: OraOLEDB, ErrorMsg: ORA-12541: TNS:no listener

[Gysbert_Wassenaar]

The first action is to search the internet for the error and read search results like this one: ORA-12541: TNS: no listener