Oracle iAS 10g 多层次高可用性体系构架

MT
MT
Single Install
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–
V. Host
Active Infra
-OID -SSO -DAS -Infra DB instance
Hardware cluster
Inactive Infra
Cluster vendors supported:
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Shared storage $ORACLE_HOME
HA 选项
– – – –
冷故障接管的集群
Clients
Active/Passive setup:
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One node is “hot” and the other node is “cold” On shared storage device Using virtual hostname & IP (the clusterware associates them with the active node) Sun, HP, IBM, Red Hat, Veritas, Fujitsu-Siemens Fail Safe for Windows
灾难恢复
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for both middle tiers and infrastructure Incremental Backup and Recovery “Flashback” to a previous configuration
备份和恢复
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DCM Archival & Recovery
Load Balancer
OID 1 Active SSO 1 Infra DAS 1 DB instance 1 Node 1 Local storage
DB (RAC) on shared disk Rest-of-infra on local disks Requires load balancer Sun, HP, Linux Full production version to follow in next release (and on all platforms)
Load Balancer
OID 1 Active SSO 1 Infra DAS 1 DB instance 1 Node 1 Local storage
DB (RAC) on shared disk Rest-of-infra on local disks Requires load balancer Sun, HP, Linux Full production version to follow in next release (and on all platforms)
–
Rolling Upgrades
OracleAS中高可用的核心技术
OPMN (Oracle 进程管理和告知系统):
– – –
Process Monitoring (Death detection and Re-start) Self Healing Available for the following OracleAS processes:
Primary Site
Standby Site
灾难恢复
Clients Load Balancer DR Sync
MT 1
MT 2
DR Sync
MT 2*
MT 1*
DR Sync Infra Infra*
ቤተ መጻሕፍቲ ባይዱ
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 Uses backup and recovery to synchronize primary & standby sites
Active 集群
Clients
Active/Active setup
–
All nodes are active
MT
MT
Provides “high 9s” uptime Single Install
– – –
OID 2 SSO 2 DAS 2 DB instance 2 Local storage
Primary Site
Standby Site
基础结构的高可用性
高可用性服务组件
– –
–
Identity Management Services – for SSO/OID Metadata Repository Services – for Portal, Wireless, Discoverer, etc. Management Services – for Enterprise Manager Cold Failover Cluster Active Cluster Identity Management (IM) Replication Install Metadata Repository in existing RAC DB
Active 集群
Clients
Active/Active setup
–
All nodes are active
MT
MT
Provides “high 9s” uptime Single Install
– – –
OID 2 SSO 2 DAS 2 DB instance 2 Local storage
– – –
–
–
Common framework for Death Detection, Process Monitoring and Process Restart Infrastructure Clusters Middle Tier: Load balancing, Smart Routing, Data / Session-state Replication (OC4J / Web Cache / OID) Transparent Application Failover (TAF) Rolling Upgrades Disaster Recovery for MT as well as Infrastructure Backup and Recovery Configuration “undo” (Archival & Recovery using DCM) Hot deployment
OHS, OC4J, WebCache, OID, Wireless, Reports, Discoverer, Process Connect, DCM Daemon, Log Loader
DCM (分布式配置管理):
– – –
File-based repository or database-based repository Consistent configuration management – helps prevent human errors when configuring OC4J clusters Available for DCM-managed components
B&R, Configuration “flashback”
系统管理 计划内宕机 数据管理
Rolling Upgrades
Shouldn’t be any (data in database)
主要信息和定位
网格计算中的主要功能 无单点故障 (End-to-End High Availability):
最小化计划内和计划外的宕机时间
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–
– – –
新版本中的新特性
新的、智能的均衡负载 / routing algorithms for mod_oc4j 基于文件系统的 OC4J clusters 自主管理功能 (OPMN death detection & restart) 支持OC4J 应用的热部署 提供快速的JDBC故障接管
Hardware cluster
Active Infra Node 2
Limited Release in 9.0.4:
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–
Config Files ($O_H1)
Shared storage
Infra DB files
Config Files ($O_H2)
Also provides scalability
Hardware cluster
Active Infra Node 2
Limited Release in 9.0.4:
–
–
Config Files ($O_H1)
Shared storage
Infra DB files
Config Files ($O_H2)
Also provides scalability
灾难恢复
Clients Load Balancer DR Sync
MT 1
MT 2
DR Sync
MT 2*
MT 1*
DR Sync Infra Infra*
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 Uses backup and recovery to synchronize primary & standby sites
OID 2
Multiple IM Middle Tiers Multiple OID Multiple IM DBs (kept synchronized using Replication) Ideal for geographically dispersed sites
DB1
Data Replication