Oracle iAS 10g 多层次高可用性体系构架.ppt

Oracle应用服务器10g的高可用性 MarkMaHongWei 内容 Oracle应用服务器高可用性简述HA的体系构架新版本中的新功能总体简述高可用性 包括中间层和基础结构层 基础结构的高可用性冷故障切换和Active集群用户身份管理数据复制使用客户数据库的RAC功能中间层的高可用性WebCache OHS OC4JPortal Forms ReportsandotherMiddleTiers总结 HA体系结构简述 LoadBalancer WebCache Wireless Mobile Browser WebUsers RAC MiddleTierClusters OHSwithLoadBalancing InfrastructureCluster Client OracleApplicationServer10g 端到端的高可用性 Oracle应用服务器高可用性 系统故障 数据故障和灾难 人为错误 Loadbalancers Clusters OPMN DisasterRecovery Backup Recovery B R Configuration flashback 系统管理 数据管理 RollingUpgrades Shouldn tbeany dataindatabase 计划外宕机 计划内宕机 主要信息和定位 网格计算中的主要功能无单点故障 End to EndHighAvailability CommonframeworkforDeathDetection ProcessMonitoringandProcessRestartInfrastructureClustersMiddleTier Loadbalancing SmartRouting Data Session stateReplication OC4J WebCache OID TransparentApplicationFailover TAF 最小化计划内和计划外的宕机时间RollingUpgradesDisasterRecoveryforMTaswellasInfrastructureBackupandRecoveryConfiguration undo Archival RecoveryusingDCM Hotdeployment 新版本中的新特性 新的 智能的均衡负载 routingalgorithmsformod oc4j基于文件系统的OC4Jclusters自主管理功能 OPMNdeathdetection restart 支持OC4J应用的热部署提供快速的JDBC故障接管灾难恢复forbothmiddletiersandinfrastructure备份和恢复IncrementalBackupandRecoveryDCMArchival Recovery Flashback toapreviousconfigurationRollingUpgrades OracleAS中高可用的核心技术 OPMN Oracle进程管理和告知系统 ProcessMonitoring DeathdetectionandRe start SelfHealingAvailableforthefollowingOracleASprocesses OHS OC4J WebCache OID Wireless Reports Discoverer ProcessConnect DCMDaemon LogLoaderDCM 分布式配置管理 File basedrepositoryordatabase basedrepositoryConsistentconfigurationmanagement helpspreventhumanerrorswhenconfiguringOC4JclustersAvailableforDCM managedcomponents 灾难恢复 端到端的远程恢复方案Active Standby配置Primary standby节点必须使用同样的虚拟服务器名称Usesbackupandrecoverytosynchronizeprimary standbysites MT1 MT2 Infra Clients MT2 MT1 Infra PrimarySite StandbySite DRSync DRSync DRSync LoadBalancer 灾难恢复 MT1 MT2 Infra Clients MT2 MT1 Infra PrimarySite StandbySite DRSync DRSync DRSync LoadBalancer 端到端的远程恢复方案Active Standby配置Primary standby节点必须使用同样的虚拟服务器名称Usesbackupandrecoverytosynchronizeprimary standbysites 基础结构的高可用性 高可用性服务组件IdentityManagementServices forSSO OIDMetadataRepositoryServices forPortal Wireless Discoverer etc ManagementServices forEnterpriseManagerHA选项ColdFailoverClusterActiveClusterIdentityManagement IM ReplicationInstallMetadataRepositoryinexistingRACDB 冷故障接管的集群 Active Passivesetup Onenodeis hot andtheothernodeis cold SingleInstallOnsharedstoragedeviceUsingvirtualhostname IP theclusterwareassociatesthemwiththeactivenode Clustervendorssupported Sun HP IBM RedHat Veritas Fujitsu SiemensFailSafeforWindows MT MT ActiveInfra Clients InactiveInfra Sharedstorage Hardwarecluster ORACLE HOME OIDSSODASInfraDBinstance V Host 冷故障接管的集群 MT MT InactiveInfra Clients ActiveInfra Sharedstorage Hardwarecluster ORACLE HOME OIDSSODASInfraDBinstance Active Passivesetup Onenodeis hot andtheothernodeis cold SingleInstallOnsharedstoragedeviceUsingvirtualhostname IP theclusterwareassociatesthemwiththeactivenode Clustervendorssupported Sun HP IBM RedHat Veritas Fujitsu SiemensFailSafeforWindows V Host Active集群 MT MT Clients Sharedstorage LoadBalancer ActiveInfraNode1 ActiveInfraNode2 Hardwarecluster InfraDBfiles Localstorage Localstorage ConfigFiles O H2 ConfigFiles O H1 OID1SSO1DAS1DBinstance1 OID2SSO2DAS2DBinstance2 Active ActivesetupAllnodesareactiveProvides high9s uptimeSingleInstallDB RAC onshareddiskRest of infraonlocaldisksRequiresloadbalancerLimitedReleasein9 0 4 Sun HP LinuxFullproductionversiontofollowinnextrelease andonallplatforms Alsoprovidesscalability Active集群 MT MT Clients Sharedstorage LoadBalancer ActiveInfraNode1 ActiveInfraNode2 Hardwarecluster InfraDBfiles Localstorage Localstorage ConfigFiles O H2 ConfigFiles O H1 Active ActivesetupAllnodesareactiveProvides high9s uptimeSingleInstallDB RAC onshareddiskRest of infraonlocaldisksRequiresloadbalancerLimitedReleasein9 0 4 Sun HP LinuxFullproductionversiontofollowinnextrelease andonallplatforms Alsoprovidesscalability OID1SSO1DAS1DBinstance1 OID2SSO2DAS2DBinstance2 用户身份管理的复制 MultipleIMMiddleTiersMultipleOIDMultipleIMDBs keptsynchronizedusingReplication Idealforgeographicallydispersedsites 中间层高可用性 WebCache集群提供了冗余和容错OHS mod oc4jloadbalancingandsmartroutingweighted metrics based roundrobin randomlocalaffinityFilebasedrepositoryforOC4JclustersEJBProxy Auto reroutingofrequests 交易应用的故障接管 TAFofJDBCconnectionstoRACdatabaseSupportedwithJDBCThickdriver OCIdriver Defineoracle jdbc OracleOCIFailoverInterfaceforstatefulapplications tohandlestaterestore Configurationmodes BasicMethod reconnecttoavailableinstanceuponfailurePre connectMethod maintainbackupconnectiontoanotherRACinstanceforfasterTAFFornonRACdatabaseauto retrywithorwithouttimeout Oracle应用服务器的集群 均衡负载WebCache LBMod oc4j Servlets Scalemiddle tier linearly LooselycoupledSession的复制克隆系统配置跨集群的应用部署系统调试DynamicMonitoringServicedata LB 1 WC 1 WC 3 WC 2 OHS OHS OHS Beta Prod Beta Prod Beta Prod IB1 IB1 IP1 IP2 IP3 IP3 IP4 1 1 2 3 2 3 2 3 4 LB 1 HTTPRequest WebCache LoadBalancer OC4JProcesses OC4JIslands OC4JInstances OHSInstances HTTPRequest Cluster Instances andIslands Portal Forms Reports和其他的中间层服务 系统配置 均衡负载WebCache集群多个中间层基础结构的冷接管或者ActiveCluster基于RAC的后端数据库 资源 OTN