rem  -- Create SQL Script ---
echo connect sys/orcl as sysdba;         > %0.tmp
echo set echo off feed off pages 0      >> %0.tmp
echo whenever sqlerror exit sql.sqlcode >> %0.tmp
echo select * from global_name;         >> %0.tmp
echo exit;                              >> %0.tmp

rem -- Test connect to database ---
sqlplus -s /nolog @%0.tmp >NUL:

if {%ERRORLEVEL%} == {0} (
   echo Database %ORACLE_SID% is available
) else (
   echo Database %ORACLE_SID% is NOT available
)

rem -- Cleanup -- 
del %0.tmp