Check TableSpace availability

Question

Is there any query which can check how much data a tablespace can store, I mean, how many space is used and how many space is free?
Thank you.

Answer 1

Try this one or modify as per ur requirement.
SELECT NVL (b.tablespace_name, NVL (a.tablespace_name, 'UNKOWN')) NAME,2 mbytes_alloc mbytes, mbytes_alloc - NVL (mbytes_free, 0) used,
3 NVL (mbytes_free, 0) free,
4 ((mbytes_alloc - NVL (mbytes_free, 0)) / mbytes_alloc)
5 * 100 pct_used,
6 100
7 - (((mbytes_alloc - NVL (mbytes_free, 0)) / mbytes_alloc) * 100)
8 pct_free
9 FROM (SELECT SUM (BYTES) / 1024 / 1024 mbytes_free, tablespace_name
10 FROM SYS.dba_free_space
11 GROUP BY tablespace_name) a,
12 (SELECT SUM (BYTES) / 1024 / 1024 mbytes_alloc, tablespace_name
13 FROM SYS.dba_data_files
14 GROUP BY tablespace_name) b
15 WHERE a.tablespace_name(+) = b.tablespace_name
16 UNION ALL
17 SELECT f.tablespace_name,
18 SUM (ROUND ((f.bytes_free + f.bytes_used) / 1024 / 1024, 2)
19 ) "total MB",
20 SUM (ROUND (NVL (p.bytes_used, 0) / 1024 / 1024, 2)) "Used MB",
21 SUM (ROUND ( ((f.bytes_free + f.bytes_used) - NVL (p.bytes_used, 0)
22 )
23 / 1024
24 / 1024,
25 2
26 )
27 ) "Free MB",
28 (SUM (ROUND (NVL (p.bytes_used, 0) / 1024 / 1024, 2)) * 100)
29 / (SUM (ROUND ((f.bytes_free + f.bytes_used) / 1024 / 1024, 2))),
30 100
31 - (SUM (ROUND (NVL (p.bytes_used, 0) / 1024 / 1024, 2)) * 100)
32 / (SUM (ROUND ((f.bytes_free + f.bytes_used) / 1024 / 1024, 2)))
33 FROM SYS.v_$temp_space_header f,
34 dba_temp_files d,
35 SYS.v_$temp_extent_pool p
36 WHERE f.tablespace_name(+) = d.tablespace_name AND f.file_id(+) = d.file_id
37 AND p.file_id(+) = d.file_id
38 GROUP BY f.tablespace_name
39 ORDER BY 4;