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   ????????????????????????????????????????,??????????????Oracle RAC?????????????????????????????,???????????????????,??????RAC???????????,????????????????????????????????????,????3???RAC????????????? 
   ????????MOS ??"Top 11 Things to do NOW
to Stabilize your RAC Cluster Environment”(DOC ID 1344678.1)???,???,??????3???????????,?????????????????????????????,???,?????????????????,??,??????????????,??????????????????????,?????????????,??????????????????????,???????RAC DBA???? 
  ??????? (PSU)??,?????????PSU? 
   ???????????,???????Oracle???????????(PSU)???PSU?????????????????,??PSU???????????????????PSU????????,???????????????PSU,????????6????????????????????BUG????,??????????,?????????????????????,???9???,???RAC???(Cluster)BUG,??7%??BUG??????,??????????BUG??????????????????????PSU??????RAC???,PSU????????: 
   
    PSU?????Grid Infrastructure(GI)home,???????????RDBMS home???????,??GI home????PSU,?????home?????,??????????GI????????????,??????,??RDBMS PSU,GI PSU??????????GI home??????PSU,???????RDBMS??PSU? 
    RAC????PSU????rolling????? –?????????GI? RDBMS?????????????????,??PSU???????,???????????????? 
   
   ???????????PSU,????????????,?????????PSU????,???RAC?????????????PSU???,???????????????????? 
   ??PSU?????, ??????MOS??: 
   
    NOTE 854428.1   Intro to
     Patch Set Updates (PSU) 
    NOTE 1082394.1 11.2.0.X Grid Infrastructure PSU Known
     Issues 
    NOTE 756671.1   Oracle
     Recommended Patches -- Oracle Database 
    NOTE 161549.1   Oracle
     Database, Networking and Grid Agent Patches for Microsoft Platforms 
    NOTE 810394.1   RAC and
     Oracle Clusterware Best Practices and Starter Kit  
   
  11gR2???????,?Diagwait???13? 
   ?2012?,??45%????????11gR2???????,????diagwait?13????RAC???????????,????diagwait??????????????,????????????????, diagwait??RAC?????????????: 
   
    ?????,??????OPROCD?????1??0.5?????,????,??OPROCD??? 1.5????,?????????diagwait????13??OPROCD??????????10?( diagwait - CSS????[???3?]),????????OPROCD???????????????'?'?????????????,1.5??????????????????OPROCD?????????????11?(1?????+10????)? 
    ?????/???????,??diagwait,??????????????????????,??,????????????? 
   
   ?11g?2?(11.2.0.1?????)??,?????????????,???????,??????????????????,????????????????,?????????????????????diagwait????????,????????????????????,????????Oracle?????(OCR),?????????OCR???????????,?????????diagwai?????????????????: 
  # $CLUSTERWARE_HOME\bin\crsctl get css diagwait 
   ????DIAGWAIT???,??????MOS??: 
   
     NOTE
     567730.1  Changes in Oracle Clusterware on Linux with the 10.2.0.4
     Patchset 
     NOTE
     559365.1  Using Diagwait as a diagnostic to get more information for
     diagnosing Oracle Clusterware Node evictions 
     NOTE
     810394.1 RAC and Oracle Clusterware Best Practices and Starter Kit  
   
  ??OS Watcher Black Box(OSWbb) ? Cluster Health Monitor(CHM) 
  ????????OS??????????????,??,??????OS Watcher Black Box(OSWbb)(??OS Watcher)?Cluster Health Monitor(CHM)????????OS???,??DBA????????????????????????????,?????????????,??????????,?????????????????????????OS????????,????????????,???????????????????? 
  OSWbb?????????,??????,????OS??????????????,????OS??????OSWbb???????: 
   
    ?????,??30??????????OS?????????????(??5??)????????????????????,?1???5????????????????????????30????????,Oracle???????????????OS?????????????,Oracle??????OSWbb?20???????? 
    OSWbb?????????????????Oracle???????????????????OS????,??,?????????????????????????Oracle???????,?????????????,?????????????????  
   
   ???11.2.0.3??,??????(HP-UX??)?,Oracle GI?????????,Cluster Health Monitor (CHM)?CHM??????,?????OSW????,??,???????OSW????,?????????? 
   Oracle??????????????????OSWbb?/?CHM,?????????,????????????????????,??????????OSWbb,???????????RAC??,??????????????????(???NOTE 580513.1“How To Start
OS Watcher Black Box Every System Boot”??????)? 
   ??OSWbb?CHM?????, ??????MOS??: 
   
     NOTE
     301137.1   OS Watcher Black Box User Guide 
     NOTE
     1328466.1 Cluster
     Health Monitor (CHM) FAQ 
     NOTE
     810394.1   RAC and Oracle Clusterware Best Practices and Starter
     Kit  
   
  ?? 
   ?????????RAC/ Oracle?????????????3???????????3?,?????RAC??????,?????????????????,?????MOS??: 
   
    NOTE 1344678.1 Top 11 Things to do NOW
     to Stabilize your RAC Cluster Environment  
    ????,???MOS-RAC/Scalability community??,?Oracle???????????,????RAC/ Oracle?????