db2 windows SQL1024N A database connection does not exist

i run the script and keep getting the error message in the title please help;
all i'm doing is a simple script to see if the database is up;

echo.                                                              
echo Check Database is running (start)                                    
echo.                                                            
echo.
echo. Uses:      
echo.            %LOG_FILE%
echo.            %DB2DATABASE%
                                                            
SETLOCAL



set DB2DATABASE=%1
set LOG_FILE=%2


db2cmd /w /c /i DB2 CONNECT TO %DB2DATABASE%                            
db2 "select 1 from sysibm.sysdummy1"                                                

set BACKUP_CHECK_LEVEL=%errorlevel%                                                                          
if %BACKUP_CHECK_LEVEL% NEQ 0 (
        echo.                                                                                   
        echo *** Database could be down ***                                            >> %LOG_FILE%
        echo.                                                                                   
        Exit 98                                                                                    
     )


ENDLOCAL


echo.                                                              
echo Check Database is running (end)                                    
echo.                                                            
echo.