SQL Plus is an Oracle client, but this is not enough to use a script. You need the ODBC driver and the prefable OleDb driver (faster) for Oracle on every PC that you are going to use the script.
ODBC Microsoft ODBC ( ODBC startmenu), . Oracle OleDb.
Microsoft Oracle, Oracle. Oracle OleDb -
Provider=OraOLEDB.Oracle;User ID=<user name>;Password=<password>;Data Source=<data source>