WebLogic Server 性能監(jiān)控與調(diào)優(yōu)

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WebLogicServer性能監(jiān)控與調(diào)優(yōu)

Overview-1WebLogic的版本W(wǎng)ebLogicServer8.1(Java1.4、J2EE1.3)WebLogicServer9.x(Java5、J2EE1.4)WebLogicServer10.0(Java5、JavaEE5)WebLogicServer10.3(Java6、JavaEE5)WebLogicServer11gR1(10.3.x)(Java6、JavaEE5)軟件授權(quán)：自從oracle收購了bea之后，WebLogic的序列號(hào)全都開放了，沒有必要再去進(jìn)行破解了。2

WebLogic主要使用

的JVMSUNHotSpotJVMBEAJRockitJVM不同的JVM，其可設(shè)置的參數(shù)和監(jiān)控的工具將是不同，后面將分別介紹這兩種JVM的設(shè)置。在Intel架構(gòu)和windows平臺(tái)上，建議使用JRockitJVM，這樣可以帶來更優(yōu)的性能。3

WebLogic實(shí)例主要設(shè)置內(nèi)容啟動(dòng)參數(shù)設(shè)置主要是設(shè)置GC參數(shù)線程設(shè)置主要是設(shè)置線程的數(shù)量數(shù)據(jù)庫連接池的設(shè)置主要是設(shè)置連接池的初始容量和最大容量4

WebLogic8.1啟動(dòng)文件%DOMAIN_HOME%/startWebLogic.cmd設(shè)置實(shí)例的運(yùn)行模式：開發(fā)模式/生產(chǎn)模式設(shè)置JAVA_HOME設(shè)置JAVA_VM：client/server/jrockit設(shè)置MEM_ARGS%WL_HOME%\common\bin\commEnv.cmd設(shè)置所有實(shí)例都統(tǒng)一使用的參數(shù)5

WebLogic9.2啟動(dòng)文件%WL_HOME%\common\bin\commEnv.cmd設(shè)置所有實(shí)例統(tǒng)一的運(yùn)行參數(shù)%DOMAIN_HOME%\bin\setDomainEnv.cmd設(shè)置本實(shí)例的運(yùn)行參數(shù)%DOMAIN_HOME%\bin\startWebLogic.cmd運(yùn)行啟動(dòng)腳本6

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SunHotSpotHeap分布Heapisdividedbroadlyintothreeareas:Young(New)generationTenured(Old)generationPermanent(Perm)generationYounggenerationisfurtherdividedinto:EdenSurvivorspaces(2)Xmx8

TuningGCManually…Newself-tuningfeatureisnotavailablewhiletuningJVMspriortoversion1.5andmanualtuningisrequired.Thefollowingarethecommontuningparametersavailablewhiletuningthegarbagecollectionmanually:Sizeofthetheoverallheap-Xms[n]-Xmx[n]Sizeofthegenerationsintheheap-XX:NewSize=n-XX:MaxNewSize=n-XX:NewRatio=n9

…TuningGCManuallyCommontuningparameters(continued)Thesizeofthesurvivorspacesintheyounggeneration-XX:SurvivorRatio=nThesizeofthepermanentgeneration-XX:PermSize=n-XX:MaxPermSize=nThethresholdforpromotionfromtheyounggenerationtotheoldgeneration-XX:MaxTenuringThreshold=nTuninginvolveseitheraseriesofexperimentswithaspecializedtool(or)goodjudgmenttodecidethatGCwasperformingwell.TuningSunHotSpotJVM-3810

JRockitBenefitsWeblogicJRockitJVMisdesignedforserver-sideapplications.Itemploysadaptiveoptimizationtosignificantlyimproveruntimeperformance.Ithasadaptivegarbagecollectionandheapmanagement.Itoffersfullsupportfor32and64bitJRockitonIntelEM64T/AMD64andcompatibles.JRockitalsosupportsSolaris/Sparcarchitecture.Itofferssupportforverylargeheapson64bitplatforms.JRockitMissionControltoolssuiteoffersbettermanagement,tuningandtroubleshooting.11

GenerationalHeap-JRockitInthetwo-generationalmodel,heapisdividedintotwogenerationsYounggeneration(Nursery)OldgenerationInasingle-spacedmodel,alltheobjectsareallocatedinasinglespaceontheheap.NurseryOldSpaceXnsXmxXmxWebLogic8.1實(shí)例的線程設(shè)置...線程的設(shè)置主要是在weblogic控制臺(tái)中完成12

.WebLogic8.1實(shí)例的線程設(shè)置..13

..WebLogic

8.1實(shí)例的線程設(shè)置.14

…WebLogic

8.1實(shí)例的線程設(shè)置15

WebLogic9.2實(shí)例的線程設(shè)置.線程管理與WebLogic8.1存在很大的不同，由WebLogic自動(dòng)去管理。默認(rèn)情況下，WebLogic提供的線程數(shù)量較小，并且在管理控制臺(tái)上沒有修改線程數(shù)量的鏈接。16

.WebLogic9.2實(shí)例的線程設(shè)置可以通過手動(dòng)修改config.xml文件，使用與weblogic8.1相同的線程設(shè)置風(fēng)格。主要是在<server>中添加以下代碼：17

數(shù)據(jù)連接池、數(shù)據(jù)源的主要配置連接池的初始容量、最大容量、增長容量。是否啟用連接泄露配置。是否測(cè)試數(shù)據(jù)庫連接。數(shù)據(jù)庫連接的時(shí)間設(shè)置。18

OracleRAC集群OracleRAC(OracleRealApplicationCluster)，Oracle數(shù)據(jù)庫的集群。基于共享存儲(chǔ)的數(shù)據(jù)庫，具有多個(gè)數(shù)據(jù)庫運(yùn)行實(shí)例。tnsnames.ora形式與常規(guī)模式不同。19

OracleRAC的數(shù)據(jù)源配置url采用oracletnsname配置的方式：配置WebLogic多池?cái)?shù)據(jù)源方式：Multipool（WebLogic8.1）多數(shù)據(jù)源（WebLogic9.2）20

SunHotSpot－JConsole21

JConsoleisaJMX-compliantGUItoolthatconnectstoarunningJVM,whichisstartedwiththemanagementagent.JDK5.0includesthemonitoringandmanagementtool,JConsole.JConsoleallowsyoutoseeinsidetheJVMandtheapplicationwhileit'srunning.JConsoleprovidesrealtimeviewingoftheperformanceofapplicationsandshowstheirresourceconsumption.22

…JConsole…ThemanagementagentintheJVMshouldbestartedformonitoring.ItcanonlyconnecttooneJVMatanytime.TouseJConsoleforconnectingtoaJVMlocally,WebLogicServershouldbestartedwiththeoptiontoenablethemanagementagent.-Dcom.sun.management.jmxremote23

JconsoleRemoteMonitoringToenabletheJMXagent(JConsole)forremoteaccess,setthissystempropertywhenyoustartWebLogicServerorJVM:Dcom.sun.management.jmxremote.port=portNoConnectingremotelythroughJConsoleistherecommendedwaywhenmonitoringormanagingproductionenvironments.TuningSunHotSpotJVM-12SUNHotSpot－jvisualvmJava6里自帶的一個(gè)監(jiān)控jvm運(yùn)行狀況的工具。%JAVA_HOME%/bin/jvisualvm.exe24

OracleJRockitMissionControlWindows平臺(tái)下，性能較優(yōu)的JVM。提供的很好的監(jiān)控工具，用于監(jiān)控WebLogic的運(yùn)行狀況。針對(duì)不同的JDK版本，都有對(duì)應(yīng)的安裝程序。可以從Oracle網(wǎng)站免費(fèi)下載/technetwork/middleware/jrockit/overview/index.html25

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BEAJRockitMissionControlBEAJRockitshipswithBEAJRockitMissionControl.Theseareagroupofindependentmanagementandmonitoringtools.BEAJRockitManagementConsoleJMXComplaintmonitoringtoolBEAJRockitRuntimeAnalyzerRecordsandhelpsyouanalyzeJVMandrunningapplicationBEAJRockitMemoryLeakDetectorDetectsandfindsthecauseformemoryleaksThemainfocusofJRockitMissionControlistodothenecessaryinstrumentationwiththelowestpossibleimpactonthesystem.27

ManagementServerThemanagementserverintheJRockitVMisdisabledbydefault.Toenablethemanagementserver,addthefollowingcommand-lineargumenttotheJVMstartscript:java-Xmanagement…weblogic.ServerThedefaultportthatthemanagementserverus