SQL about usage size

Question

Dear All
I am beginner to use Oracle 11g.
I want to create an SQL check the usage size of Exadata.
· Instance name (v $ instance)
・Usage Size (of the total Exadata, what percentage do you use).
Similarly, the percent you want to create an SQL check tablespace for each instance used.
· Instance name (v $ instance)
· Tablespace name
・ Size of usage Tablespace (one instance of, or use a percentage)
For these two SQL,I will grad to send coomment.
Thanks you.

Answer 1

select d.status,
       db.name dbname,
       d.tablespace_name tsname,
       d.extent_management,
       d.allocation_type,
       to_char(nvl(d.min_extlen / 1024, 0),
       '99G999G990D90', 'NLS_NUMERIC_CHARACTERS = '',.'' ')
       "ALLOC_SIZE (K)",
       d.contents "Type",
case
when(d.contents = 'TEMPORARY') then
       to_char(nvl(a.bytes / 1024 / 1024, 0),
       '99G999G990D90', 'NLS_NUMERIC_CHARACTERS = '',.'' ')
else
       to_char(nvl(t.bytes / 1024 / 1024, 0),
       '99G999G990D90', 'NLS_NUMERIC_CHARACTERS = '',.'' ')
end as "Size (M)",
       to_char(nvl((a.bytes - nvl(f.bytes, 0)) / 1024 / 1024,   0),
       '99G999G990D90', 'NLS_NUMERIC_CHARACTERS = '',.'' ')
       "Used (M)",
       to_char(nvl((a.bytes - nvl(f.bytes, 0)) / a.bytes * 100,   0),
       '990D90', 'NLS_NUMERIC_CHARACTERS = '',.'' ')
       "Used (%)"
from sys.dba_tablespaces d,
      (select tablespace_name,
         sum(bytes) bytes
        from dba_data_files
   group by tablespace_name)
a,
    (select tablespace_name,
        sum(bytes) bytes
       from dba_temp_files
      group by tablespace_name)
t,
    (select tablespace_name,
       sum(bytes) bytes
      from dba_free_space
     group by tablespace_name)
f,
  v$database db
     where d.tablespace_name = a.tablespace_name(+)
       and d.tablespace_name = f.tablespace_name(+)
       and d.tablespace_name = t.tablespace_name(+)
     order by 10 desc