Declare
	out_File Text_Io.File_Type;
begin
	out_File := Text_Io.FOpen('C:\test.txt' , 'W');
	Text_Io.Put_Line(out_file , 'Hi this is text file!');
	Text_Io.FClose(out_file);
end;

Declare
	out_File Utl_File.File_Type;
begin
	out_File := Utl_File.FOpen('Dir' , 'test.txt' , 'W');
	Utl_File.Put_Line(out_file , 'Hi this is text file!');
	Utl_File.FClose(out_file);
	Exception when others then
	Dbms_output.Put_line(Sqlerrm||'-------'||Sqlcode);
end;