--表空间查看SELECT tbs,                                        sum(totalM) as total,                                        sum(usedM) as UserdM,                                        sum(remainedM) as remainedM,                                        sum(usedM)/sum(totalM)*100 as UserdPercent,                                sum(remainedM)/sum(totalM)*100 as remainedPercent                                FROM(                                                 SELECT b.file_id ID,                                         b.tablespace_name tbs,                                         b.file_name name,                                         b.bytes/1024/1024 totalM,                                         (b.bytes-sum(nvl(a.bytes,0)))/1024/1024 usedM,                             sum(nvl(a.bytes,0)/1024/1024) remainedM,                                 sum(nvl(a.bytes,0)/(b.bytes)*100),                                     (100 - (sum(nvl(a.bytes,0))/(b.bytes)*100))                                 FROM dba_free_space a,dba_data_files b                                 WHERE a.file_id = b.file_id                                     GROUP BY b.tablespace_name,b.file_name,b.file_id,b.bytes                         ORDER BY b.tablespace_name                                    )                                                GROUP BY tbs   --查看表空间文件位置SELECT ddf.file_name FROM Dba_Data_Files ddf where ddf.tablespace_name = 'BLOBS'  --增大表空间ALTER TABLESPACE BLOBS ADD DATAFILE '/opt/ptc/Windchill_9.1/ocu/oradata/wind/windblobs02.dbf' SIZE 2g AUTOEXTEND ON NEXT 500M MAXSIZE 32g;