最新2012 tuxedoweblogic编程简介-v5.0

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1、最新TuxedoWebLogic编程一、BEATuxedo简介关于UBBCONFIG文件的一些设置：ThecostincurredbyincreasingMAXACCESSERSisoneadditionalsemaphorepersiteperclientorserverprocess(accesser—seenotethatfollows).ThereisasmallfixedsemaphoreoverheadforsystemprocessesinadditiontothataddedbytheMAXACCESSERSvalue.Thecos

2、tofincreasingMAXSERVERSandMAXSERVICESisasmallamountofsharedmemorythatiskeptforeachserver,service,andcliententry,respectively.Thegeneralideafortheseparametersistoallowforfuturegrowthoftheapplication.ItismoreimportanttoscrutinizeMAXACCESSERS.Note:Thesystemallocatesonesemaphorefo

3、reachaccessslottothebulletinboard.Asemaphoreisalatchcircuitthatpreventsmorethanoneprocessfromaccessingthesamesharedmemoryinthebulletinboardatthesametime.ForBEATuxedopre-Release7.1(6.5orearlier),boththeMAXACCESSERSandMAXSERVERSparametersforanapplicationplayapartintheuserlicense

4、checkingscheme.Specifically,amachineisnotallowedtobootifthenumberofMAXACCESSERSforthatmachine+thenumberofMAXACCESSERSforthemachine(ormachines)alreadyrunningintheapplicationisgreaterthanthenumberofMAXSERVERS+userlicensesfortheapplication.Thus,thetotalnumberofMAXACCESSERSforanap

5、plicationmustbelessthanorequaltothenumberofMAXSERVERS+userlicensesfortheapplication.FirstofAll———设置合理的操作系统核心参数！！#用tmunloadcf>generated.ubb可以得出目前配置得UBB文件所有得参数值（没有设置的有缺省值）#用tmloadcf–c或tmboot–c可以计算出当前UBB配置的Tuxedo启动最少要占用的系统IPC资源。Ipcsizing(minimum/Tvaluesonly)...FixedMinimumsPerPro

6、cessorSHMMIN:1SHMALL:1SEMMAP:SEMMNIVariableMinimumsPerProcessorSEMUME,ASHMMAXSEMMNU,**NodeSEMMNSSEMMSLSEMMSLSEMMNIMSGMNIMSGMAPSHMSEG------------------------------------------------KF_FENGM65860A+13774220Kwhere1<=A<=8.SEMMNSMaximumnumberofsemaphoresinthesystem.Theminimumrequire

7、mentforSEMMNSisMAXACCESSERS-MAXWSCLIENTS+13SEMMNIMaximumnumberofactivesemaphoresetsSEMMSLMaximumnumberofsemaphorespersemaphoreset.SEMMNIandSEMMSLarecommonlychosensothattheirproductequalsSEMMNS.TheBEATuxedosystemdoesnotperformsemaphoreoperationsonsemaphoresets;however,itattempt

8、stoallocateasmanysemaphorespersemaphoresetaspossibleSEMMAPSiz