--查詢表空間名稱和大小
select upper (f.tablespace_name) "表空間名",
d.tot_grootte_mb "表空間大小(m)",
d.tot_grootte_mb - f.total_bytes "已使用空間(m)",
to_char (round ((d.tot_grootte_mb - f.total_bytes) / d.tot_grootte_mb * 100, 2), '990.99') "使用比",
f.total_bytes "空閒空間(m)",
f.max_bytes "最大塊(m)"
from ( select tablespace_name,
round (sum (bytes) / (1024 * 1024), 2) total_bytes,
round (max (bytes) / (1024 * 1024), 2) max_bytes
from sys.dba_free_space
group by tablespace_name) f,
( select dd.tablespace_name,
round (sum (dd.bytes) / (1024 * 1024), 2) tot_grootte_mb
from sys.dba_data_files dd
group by dd.tablespace_name) d
where d.tablespace_name = f.tablespace_name
order by 4 desc;
--檢視資料庫引起鎖表的sql語句：
select a.username,
a.machine,
a.program,
a.sid,
a.serial#,
a.status,
c.piece,
c.sql_text
from v$session a,
v$sqltext c
where a.sid in (select distinct t2.sid
from v$locked_object t1,
v$session t2
where t1.session_id = t2.sid)
and a.sql_address = c.address(+)
order by c.piece;
--檢視資料庫鎖的情況必須要有dba許可權，可以使用一下sql 語句：
select object_id, session_id, locked_mode from v$locked_object;
select t2.username,
t2.sid,
t2.serial#,
t2.logon_time
from v$locked_object t1, v$session t2
where t1.session_id = t2.sid
order by t2.logon_time;
--檢視被鎖的表
select p.spid,
a.serial#,
c.object_name,
b.session_id,
b.oracle_username,
b.os_user_name
from v$process p,
v$session a,
v$locked_object b,
all_objects c
where p.addr = a.paddr
and a.process = b.process
and c.object_id = b.object_id;
--殺掉程序
alter system kill session 'sid,serial#';
--檢視連線數
select count (*) from v$session;
--檢視併發連線數
select count(*) from v$session where status='active';
--檢視連線的程序
select sid, serial#, username, osuser from v$session;
--檢視資料庫使用的裸裝置
select *
from dba_data_files
order by file_name;
select *
from dba_temp_files
order by file_name;
select *
from v$controlfile
order by file_name;
select *
from v$logfile;
--具體的方法是查詢dba_data_files，dba_temp_files，v$controlfile和v$logfile看這四類檔案具體占用的裸裝置
--查詢所有使用者表使用大小的前三十名
select * from (select segment_name,bytes from dba_segments where owner = user order by bytes desc ) where rownum <= 30;
--以下的sql語句列出當前資料庫建立的會話情況:
select sid,serial#,username,program,machine,status from v$session;
--如果dba要手工斷開某個會話，則執行:
alter system kill session 'sid,serial#';
--注意，上例中sid為1到7(username列為空)的會話，是oracle的後台程序，不要對這些會話進行任何操作。
--查詢表空間有那些表:
select table_name from all_tables where tablespace_name= 'temp';
ORACLE關於鎖表查詢的部分SQL
查詢表空間名稱和大小 select upper f.tablespace name 表空間名 d.tot grootte mb 表空間大小 m d.tot grootte mb f.total bytes 已使用空間 m to char round d.tot grootte mb f.total ...
關於鎖表查詢的部分SQL
查詢表空間名稱和大小 select upper f.tablespace name 表空間名 d.tot grootte mb 表空間大小 m d.tot grootte mb f.total bytes 已使用空間 m to char round d.tot grootte mb f.total ...
ORACLE鎖表查詢
select rule lpad decode l.xidusn 0,3,0 l.oracle username user name,o.owner,o.object name,o.object type,s.sid,s.serial from v locked object l,dba objec...