diferença entre dba_data_file e dba_segments

[EvlokiParticipante]

**Volumétria Oracle

– Tamanho de Cada Tabela

SELECT owner, tablespace_name, segment_name,
round(sum(bytes/1024/1024),2) as Tamanho_MB –, extents as Num_extents
FROM dba_segments
WHERE owner = ‘SCOTT’
AND segment_type = ‘TABLE’
– AND segment_name like ‘DEPT%’
GROUP BY owner, tablespace_name, segment_name

– Tamanho das Tabelas Por Usuário

SELECT owner, round(sum(bytes/1024/1024),2) as Tamanho_MB –, extents as Num_extents
FROM dba_segments
GROUP BY owner

– Tamanho Total das Tabelas

SELECT round(sum(bytes/1024/1024),2) as Tamanho_MB –, extents as Num_extents
FROM dba_segments

– % de Uso das TableSpaces

SELECT a.TABLESPACE_NAME “TableSpace Name”,
round(a.BYTES/1024/1024) “MB Allocated”,
round((a.BYTES-nvl(b.BYTES, 0)) / 1024 / 1024) “MB Used”,
nvl(round(b.BYTES / 1024 / 1024), 0) “MB Free”,
round(((a.BYTES-nvl(b.BYTES, 0))/a.BYTES)*100,2) “Pct Used”,
round((1-((a.BYTES-nvl(b.BYTES,0))/a.BYTES))*100,2) “Pct Free”
FROM (SELECT TABLESPACE_NAME,
sum(BYTES) BYTES
FROM dba_data_files
GROUP BY TABLESPACE_NAME) a,
(SELECT TABLESPACE_NAME,
sum(BYTES) BYTES
FROM sys.dba_free_space
GROUP BY TABLESPACE_NAME) b
WHERE a.TABLESPACE_NAME = b.TABLESPACE_NAME (+)
ORDER BY ((a.BYTES-b.BYTES)/a.BYTES);

Não é bem o que vc perguntou, mas espero que ajude em algo. 🙂