SELECT a.tablespace_name,
round(a.total_size, 1) "total(M)",
round(a.max_size, 1) "max(M)",
round(a.total_size) - round(nvl(b.free_size, 0), 1) "used(M)",
round(nvl(b.free_size, 0), 1) "free(M)",
round(nvl(b.free_size, 0) / total_size * 100, 1) "free rate(%)",
round(nvl(a.max_size -
(round(a.total_size) - round(nvl(b.free_size, 0), 1)),
0) / max_size * 100,
1) "free rate2(%)"
FROM (SELECT tablespace_name,
SUM(bytes) / 1024 / 1024 total_size,
SUM(CASE
WHEN autoextensible = 'NO' THEN
bytes
ELSE
maxbytes
END) / 1024 / 1024 max_size
FROM dba_data_files
GROUP BY tablespace_name) a,
(SELECT tablespace_name, SUM(bytes) / 1024 / 1024 free_size
FROM dba_free_space
GROUP BY tablespace_name) b
WHERE a.tablespace_name = b.tablespace_name(+);
来自 “ ITPUB博客 ” ，链接：https://blog.itpub.net/21251711/viewspace-2285421/ ，如需转载，请注明出处，否则将追究法律责任。
