Note

# Ping an Oracle server, get version information, etc.
#
tnscmd10g $COMMAND -h $IP_ADDRESS
 
# Enumerate information about an Oracle server
#
oscanner -s $IP_ADDRESS -P $PORT
 
# Dictionary enumeration of Oracle server SIDs
#
sidguess -i $IP_ADDRESS -d $WORDLIST_FILE

More information about the above tools: