1、Oracle Clusterware supports up to 100 nodes in a cluster on configurations running Oracle Database 10grelease 2 (10.2) and later releases.
在10.2以後的版本開始 oracle的集群支持最多100g節點的集群。
2、網絡配置:
每個節點最少2張網卡(one for a public network and one for a private network)
oracle 不支持集群節點間直連。
Oracle Clusterware 11g release 2 (11.2) supports the use of dynamic host configuration protocol (DHCP) for the VIP addresses and the SCAN address, but not the public address.
在11.2後支持vip ,scan ip 使用dhcp 但public ip 不支持
3、存儲配置:
Oracle Clusterware supports NFS, iSCSI,Direct Attached Storage (DAS), Storage Area Network(SAN) storage, and Network Attached Storage(NAS).
ocr 建議冗余 《=5
voting disk suggest 5 ; support up to 15
voting disk 最多支持為15個盤
The voting disk files, which record node membership information,
and the Oracle Cluster Registry (OCR), which records cluster configuration information,information about the components that Oracle Clusterware controls, such as Oracle RAC databases, listeners, virtual IP addresses (VIPs), and services and any applications.
voting disk 記錄了節點成員關系信息。
ocr 主要記錄的黑絲集群的配置信息,如集群控制的組件:數據庫,監聽,vip ,服務,其他的應用。
4、集群,asm ,rdbms.兼容性問題
Oracle ASM release 11.2 requires OracleClusterware release 11.2 and supports
Oracle Database 11grelease 2 (11.2), release 1 (11.1), Oracle Database 10g release 2 (10.2), and release 1 (10.1)
11.2的asm 要求的集群的是 >=11.2 但是可以支持的數據庫可以是11.2,11.1,10.2,10.1
5、----oracle cluster 兩個配置、管理工具
Server Control (SRVCTL): SRVCTL is a command-line interface that you can use to manage Oracle resources, such as databases, services, or listeners in the cluster.
srvclt 可以用於管理oracle的 資源如數據庫, 服務,監聽。。
Oracle Clusterware Control (CRSCTL): CRSCTL is a command-line tool that you can use to manage Oracle Clusterware. CRSCTL should be used for general clusterware management and management of individual resources.
crsctl 管理集群層面的工具,可以管理整個集群,也可以管理單個集群資源。
以上兩個工具發出的命令對整個集群中的所有節點有效,可以在集群中任何節點發出命令,來控制,配置集群或者rac 的資源