oracle表空间 大小推荐,oracle中真正的表空间大小
:SELECT DISTINCT a.tablespace_name,sum(a.bytes)/1024/1024 CurMb,sum(decode(b.maxextend, null, a.bytes/1024/1024, b.maxextend*(SELECT value FROM v$parameter WHERE name='db_block_size')/1024/1024)) MaxM
:
SELECT DISTINCT a.tablespace_name,
sum(a.bytes)/1024/1024 CurMb,
sum(decode(b.maxextend, null, a.bytes/1024/1024, b.maxextend*(SELECT value FROM v$parameter WHERE name='db_block_size')/1024/1024)) MaxMb,
round(100*(sum(a.bytes)/1024/1024 - round(c.free/1024/1024))/(sum(decode(b.maxextend, null, a.bytes/1024/1024, b.maxextend*(SELECT value FROM v$parameter WHERE name='db_block_size')/1024/1024)))) UPercent,
(sum(a.bytes)/1024/1024 - round(c.free/1024/1024)) TotalUsed,
(sum(decode(b.maxextend, null, a.bytes/1024/1024, b.maxextend*(SELECT value FROM v$parameter WHERE name='db_block_size')/1024/1024)) - (sum(a.bytes)/1024/1024 - round(c.Free/1024/1024))) TotalFree
FROM dba_data_files a,
sys.filext$ b,
(SELECT d.tablespace_name , sum(nvl(c.bytes,0)) free
FROM dba_tablespaces d,dba_free_space c
WHERE d.tablespace_name = c.tablespace_name(+)
GROUP BY d.tablespace_name) c
WHERE a.file_id = b.file#(+)
AND a.tablespace_name = c.tablespace_name
GROUP BY a.tablespace_name,
c.free/1024
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