通过以上sql查询到大量rdbms ipc message timeout等待,此事件是空闲事件,解释如下: The background processes (LGWR, DBWR, LMS0) use this event to indicate that they are idle and are waiting for the foreground processes to send them an IPC message to do some work. Wait Time: Up to 3 seconds....
[oracle@jumper bdump]$ tail -f conner_ckpt_2563.trc WAIT #0: nam='rdbms ipc message' ela= 2994710 p1=300 p2=0 p3=0WAIT #0: nam='control file parallel write' ela= 2442 p1=3 p2=3 p3=3WAIT #0: nam='rdbms ipc message' ela= 2995171 p1=300 p2=0 p3=0WAIT #0: nam='control...
Idle 空闲等待事件 ,最为常见的是rdbms ipc message (等待实例内部的ipc通信才干活,即别人告知我有活干,我才干,否则我休息==》Idle), SQL*Net message from client(等待SQL*NET传来信息,否则目前没事干)2-3 前台等待事件Foreground Wait Events Snaps: 70719-70723-> s - second, ms - millisecond - 1000t...
51、s, gv$sqlarea sa where sw.sid = s.sid (+) and sw.inst_id = s.inst_id (+) and s.sql_address = sa.address and sw.event not in ('rdbms ipc message','smon timer','pmon timer', 'SQL*Net message from client','lock manager wait for remote message', 'ges remote me 52、...
Idle 空闲等待事件 ,最为常见的是rdbms ipc message (等待实例内部的ipc通信才干活,即别人告知我有活干,我才干,否则我休息==》Idle), SQL*Net message from client(等待SQL*NET传来信息,否则目前没事干)2-3 前台等待事件Foreground Wait Events Snaps: 70719-70723 -> s - second, ms - millisecond - ...
(*)"Tot",sum(SECONDS_IN_WAIT)SECONDS_IN_WAITFROMGV$SESSION_WAITWHEREeventNOTIN('smon timer','pmon timer','rdbms ipc message','SQL*Net message from client','gcs remote message')ANDeventNOTLIKE'%idle%'ANDeventNOTLIKE'%Idle%'ANDeventNOTLIKE'%Streams AQ%'GROUPBYinst_id,EVENTORDERBY1,5...
当LGWR处于空闲状态时,它依赖于rdbms ipc message等待,处于休眠状态,直到3秒超时时间到。如果LGWR发现有redo需要写出,那么LGWR将执行写出操作,log file parallel write等待事件将会出现。 (2)缺省的_log_io_size等于1/3 log buffer大小,上限值为1M,此参数在X$KSPPSV中显示的0值,意为缺省值。也就是,LGWR将在Mi...
IN ('smon timer','pmon timer','rdbms ipc message','SQL*Net message from client','gcs remote message') AND event NOT LIKE '%idle%' AND event NOT LIKE '%Idle%' AND event NOT LIKE '%Streams AQ%' GROUP BY inst_id,EVENT ORDER BY 1,5 desc; ...
3: 0: waiting for 'rdbms ipc message' 4: 0: waiting for 'VKTM Logical Idle Wait' 5: 0: waiting for 'rdbms ipc message' 6: 0: waiting for 'DIAG idle wait' 7: 0: waiting for 'rdbms ipc message' 8: 0: waiting for 'DIAG idle wait' ...
30: RMS0 ospid 20251878 sid 3031 ser 51837, waiting for 'rdbms ipc message' (DEAD) 2)LMS进程trace发现tickets已使用光了,导致LMS/LMD进程无法相互通信,实例因没有响应而被驱逐。 tkt_total=1000 (min=1000) avl=750 sp_rsv=250 max_sp_rsv=250 ...