1、查看表空間的名稱及大小
set linesize 140;set pages 200;column tablespace_name format a30;select tablespace_name,min_extents,max_extents,pct_increase,status from dba_tablespaces;select tablespace_name,initial_extent,next_extent,contents,logging,extent_management,allocation_type from dba_tablespacesorder by tablespace_name;
2、查看表空間物理文件的名稱及大小
column db_block_size new_value blksz noprintselect value db_block_size from v$parameter where name='db_block_size';column tablespace_name format a16;column file_name format a60;set linesize 160;select file_name,round(bytes/(1024*1024),0) total_space,autoextensible,increment_by*&blksz/(1024*1024) as incement,maxbytes/(1024*1024) as maxsize from dba_data_files order by tablespace_name;
3、查看回滾段名稱及大小
column roll_name format a13 heading 'rollback name'column tablespace format a11 heading 'tablspace'column in_extents format a20 heading 'init/next extents'column m_extents format a10 heading 'min/max extents'column status format a8 heading 'status'column wraps format 999 heading 'wraps' column shrinks format 999 heading 'shrinks'column opt format 999,999,999 heading 'opt. size'column bytes format 999,999,999 heading 'bytes'column extents format 999 heading 'extents'select a.owner || '.' || a.segment_name roll_name , a.tablespace_name tablespace , to_char(a.initial_extent) || ' / ' || to_char(a.next_extent) in_extents , to_char(a.min_extents) || ' / ' || to_char(a.max_extents) m_extents , a.status status , b.bytes bytes , b.extents extents , d.shrinks shrinks , d.wraps wraps , d.optsize optfrom dba_rollback_segs a , dba_segments b , v$rollname c , v$rollstat dwhere a.segment_name = b.segment_name and a.segment_name = c.name (+) and c.usn = d.usn (+)order by a.segment_name;
4、查看控制文件
select name from v$controlfile;
5、查看日志文件
select member from v$logfile;
6、查看表空間的使用情況
select * from( select sum(bytes)/(1024*1024) as "free_space(m)",tablespace_name from dba_free_spacegroup by tablespace_name) order by "free_space(m)";
7、查看數據庫庫對象
select owner, object_type, status, count(*) count# from all_objects group by owner,object_type,status;
8、查看數據庫的版本
select * from v$version;
9、查看數據庫的創建日期和歸檔方式
select created,log_mode,log_mode from v$database;
10、查看臨時數據庫文件
select status, enabled, name from v$tempfile;
