系統監測情況
--*cpu*使用情況
SELECT /*cpu*/ u.SID, u.serial#, s.VALUE cpu, u.username, u.machine,u.program, u.osuser
FROM v$session u, v$sesstat s
WHERE s.SID = u.SID AND
statistic# IN (12)
ORDER BY cpu DESC
--內存使用情況
SELECT u.SID, u.serial#, s.VALUE mem, u.username, u.machine,u.program, u.osuser
FROM v$session u, (SELECT /*mem*/ SID, SUM (VALUE) value
FROM v$sesstat
WHERE statistic# IN (20,15)
GROUP BY SID) s
WHERE s.SID = u.SID
ORDER BY mem DESC
--服務器I/O使用狀況
SELECT u.SID, u.serial#, s.VALUE io, u.username, u.machine,u.program, u.osuser
FROM v$session u, (SELECT /*io*/ SID, SUM (VALUE) value
FROM v$sesstat
WHERE statistic# IN (40, 44, 9)
GROUP BY SID) s
WHERE s.SID = u.SID ORDER BY io DESC) x WHERE ROWNUM < 21
--表空間使用情況
select b.file_id 文件ID,b.tablespace_name 表空間,b.file_name 物理文件名,round(b.bytes/(1024*1024)) 總M數,round((b.bytes-sum(nvl(a.bytes,0)))/(1024*1024)) 已使用,round(sum(nvl(a.bytes,0))/(1024*1024)) 剩餘,round(sum(nvl(a.bytes,0))/(b.bytes)*100,2) 剩餘百分比
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
--表空間碎片情況
select b.file_id 文件ID,b.tablespace_name 表空間,b.file_name 物理文件名,a.block_id 塊ID,a.blocks 塊大小,a.bytes 可用字節數
from dba_free_space a,dba_data_files b
where a.file_id=b.file_id
order by b.file_id
--數據庫鎖表情況
SELECT OBJECT_ID 目標ID,SESSION_ID 會話ID,SERIAL# 序列號,ORACLE_USERNAME 鎖表數據庫用戶,OS_USER_NAME 鎖表系統用戶,S.PROCESS 進程號
FROM V$LOCKED_OBJECT A,V$SESSION S
WHERE A.SESSION_ID=S.SID
--數據庫session鎖表情況
select sys.v_$session.osuser,sys.v_$session.machine,v$lock.sid,
sys.v_$session.serial#,
decode(v$lock.type,
'MR', 'Media Recovery',
'RT','Redo Thread',
'UN','User Name',
'TX', 'Transaction',
'TM', 'DML',
'UL', 'PL/SQL User Lock',
'DX', 'Distributed Xaction',
'CF', 'Control File',
'IS', 'Instance State',
'FS', 'File Set',
'IR', 'Instance Recovery',
'ST', 'Disk Space Transaction',
'TS', 'Temp Segment',
'IV', 'Library Cache Invalida-tion',
'LS', 'Log Start or Switch',
'RW', 'Row Wait',
'SQ', 'Sequence Number',
'TE', 'Extend Table',
'TT', 'Temp Table',
'Unknown') LockType,
rtrim(object_type) || ' ' || rtrim(owner) || '.' || object_name object_name,
decode(lmode, 0, 'None',
1, 'Null',
2, 'Row-S',
3, 'Row-X',
4, 'Share',
5, 'S/Row-X',
6, 'Exclusive', 'Unknown') LockMode,
decode(request, 0, 'None',
1, 'Null',
2, 'Row-S',
3, 'Row-X',
4, 'Share',
5, 'S/Row-X',
6, 'Exclusive', 'Unknown') RequestMode,
ctime, block b
from v$lock, all_objects, sys.v_$session
where v$Lock.sid > 6
and sys.v_$session.sid = v$lock.sid
and v$lock.id1 = all_objects.object_id
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