Oracle9i RAC 中quorum.dbf 及 srvm.dbf 檔案瞭解

瞭解到 quorum.dbf 用於CM的檢查檔案, srvm.dbf 用於存放共享的資料庫包括控制檔案，資料檔案，日誌檔案，歸檔檔案，伺服器配置檔案(srvm configuration file) . 但是一直不太清楚裡面具體存放的一些內容及如何變更，什麼後臺程式來這兩個檔案等,準備一一搞清楚，先紀錄一下。

The Quorum Disk

RAC uses a quorum disk to improve cluster availability. Oracle stores cluster status

information on the partition that is reserved for the quorum disk. The node monitor uses the quorum disk configuration information to manage the cluster configuration.

The Oracle configuration and administrative tools also require access to cluster

configuration data that is stored on shared disks. You must configure a shared disk

resource to use the Database Configuration Assistant, Oracle Enterprise Manager, and the Server Control command-line administrative utility.

Note: On some platforms such as Windows NT, the quorum disk is sometimes called the voting disk.

配置OCM檔案

A. $ORACLE_HOME/oracm/admin/cmcfg.ora

Node1 server

HeartBeat=15000

ClusterName=Oracle Cluster Manager, version 9i

PollInterval=1000

MissCount=210

PrivateNodeNames=node1-pri node2-pri

PublicNodeNames=node1-pub node2-pub

ServicePort=9998

CmDiskFile=/oradata2/quorum.dbf

HostName=node1-pri

KernelModuleName=hangcheck-timer