Verifica espaço no banco oracle

verifica.sql

SELECT DDF.TABLESPACE_NAME "TablespaceName",
       DDF.FILE_NAME "DataFile",
       DDF.BYTES / (1024 * 1024) "Total(MB)",
       ROUND((DDF.BYTES - SUM(NVL(DFS.BYTES, 0))) / (1024 * 1024), 1) "Used(MB)",
       ROUND(SUM(NVL(DFS.BYTES, 0)) / (1024 * 1024), 1) "Free(MB)"
FROM   SYS.DBA_FREE_SPACE DFS
LEFT   JOIN SYS.DBA_DATA_FILES DDF ON DFS.FILE_ID = DDF.FILE_ID
WHERE DDF.TABLESPACE_NAME = 'ETURMALINATAB'
GROUP  BY DDF.TABLESPACE_NAME, DDF.FILE_NAME, DDF.BYTES
ORDER  BY DDF.TABLESPACE_NAME, DDF.FILE_NAME;