/*查看表空间物理文件的名称及大小*/SELECT tablespace_name,file_id,file_name,round(bytes / (1024 * 1024), 0) total_space FROM dba_data_files ORDER BY tablespace_name; /*查看表空间的使用情况*/ select a.a1 表空间名称, trunc(b.b3/1024/1024/1024,2) 表空间总大小G, trunc(b.b2/1024/1024/1024,2) 表空间文件已有大小G, --同一表空间DBF文件目前大小总和 round((b.b2-a.a2)/1024/1024/1024,2) 已使用G, trunc(b.b2/1024/1024/1024-(b.b2-a.a2)/1024/1024/1024,2) 剩余大小G, trunc((b.b3/1024/1024-(b.b2-a.a2)/1024/1024)/1024,2) 可用表空间Gfrom (select tablespace_name a1,sum(nvl(bytes,0)) a2 from dba_free_space group by tablespace_name) a, (select tablespace_name b1,sum(bytes) b2,sum(maxbytes) b3 from dba_data_files group by tablespace_name) bwhere a.a1=b.b1;/*增加表空间*/alter tablespace HTBASE add datafile 'D:\APP\BLJ-USER\ORADATA\HTBASE\HTBASE102.DBF' size 500M autoextend on next 5M maxsize unlimited;