oracleɾ³ýËø±í
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1.²é¿´Äĸö±í±»Ëø:
select b.owner,b.object_name,l.session_id,l.locked_mode
from v$locked_object l, dba_objects b
where b.object_id=l.object_id;
2.²é¿´±»Ëø±íµÄsid ºÍserial# :
select t2.username,t2.sid,t2.serial#,t2.logon_time
from v$locked_object t1,v$session t2
where t1.session_id=t2.sid order by t2.logon_time;
3.Ö´ÐÐÏÂÃæµÄÓï¾ä:
alter system kill session 'sid,serial#';
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The DB File Scattered Read wait event generally indicates waits related to full table scans or fast
full index scans. As full table scans are pulled into memory, they are scattered throughout the
buffer cache, since it is usually unlikely that they fall into contiguous buffers. A large numb ......
Wait Problem Potential Fix Sequential Read Indicates many index reads—tune the code (especially joins) Scattered Read Indicates many full table scans—tune the code; cache small tables ......
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