檢視資料庫 Oracle資料庫技術與實驗指導

1.檢視表空間的名稱及大小

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_tablespaces order by tablespace_name;
select t.tablespace_name, round(sum(bytes / (1024 * 1024)), 0) ts_size from dba_tablespaces t, dba_data_files d where t.tablespace_name = d.tablespace_name group by t.tablespace_name;

column db_block_size new_value blksz noprint;

select 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;
select tablespace_name, file_id,file_name, round(bytes/(1024*1024),0) total_space from dba_data_files order by tablespace_name;

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 opt from dba_rollback_segs a , dba_segments b , v$rollname c , v$rollstat d where a.segment_name = b.segment_name and a.segment_name = c.name (+) and c.usn = d.usn (+) order by a.segment_name;

select segment_name, tablespace_name, r.status,(initial_extent/1024) initialextent,(next_extent/1024) nextextent,max_extents, v.curext curextent from dba_rollback_segs r, v$rollstat v where r.segment_id = v.usn(+) order by segment_name ;

select name from v$controlfile;

select member from v$logfile;

select * from( select sum(bytes)/(1024*1024)  as "free_space(m)",tablespace_name from dba_free_space group by tablespace_name) order by "free_space(m)";

select owner, object_type, status, count(*) count# from all_objects group by owner,object_type,status;

select * from v$version;

select version from product_component_version where substr(product,1,6)='oracle';

select created,log_mode,log_mode from v$database;

select status, enabled, name from v$tempfile;

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