包含标签 Cluster 的文章

11gR2 Clusterware and Grid Home – What You Need to Know

这篇文章详细的介绍了11g clusterware整体结构,记录一下 DETAILS 11gR2 Clusterware Key Facts 11gR2 Clusterware is required to be up and running prior to installing a 11gR2 Real Application Clusters database. The GRID home consists of the Oracle Clusterware and ASM. ASM should not be in a separate home. The 11gR2 Clusterware can be installed in “Standalone” mode for ASM and/or “Oracle Restart” single node support. This clusterware is a subset of the full clusterware described in this document. The 11gR2 Clusterware can be run by itself or on top of vendor clusterware. See the certification matrix for certified combinations. Ref: Note: 184875.1 “How To Check The * Certification Matrix for Real Application Clusters” The GRID Home and the RAC/DB Home must be installed in different locations. The 11gR2 Clusterware requires a shared OCR files and voting files. These can be stored on ASM or a cluster filesystem. The OCR is backed up automatically every……

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Oracle Cluster Time Synchronization Service (CTSS)

以前我安装rac的同步都是用的ntp,后来oracle引入ctss,以下为官方介绍 The Cluster Time Synchronization Service (CTSS) is installed as part of Oracle Clusterware. By default the CTSS runs in observer mode if it detects a time synchronization service or a time synchronization service configuration, valid or broken, on the system. If CTSS detects that there is no time synchronization service or time synchronization service configuration on any node in the cluster, then CTSS goes into active mode and takes over time management for the cluster 简单来说 就是ctss是作为grid的一部分安装完成,会自动检查服务器上是否有安装其他时间同步服务。如果没有那么ctss就会自动生……

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在vmware linux 7.5安装oracle 12c rac

作为测试目的安装,环境如下: OS: OEL 7.5 64-bit (12c 已经不支持32位系统) db verions: 12.2 node: 2 (rac1.oracle.com,rac2.oracle.com) IP规划: 192.0.2.11 rac1 rac1.oracle.com 192.0.2.13 rac1-vip 192.0.2.12 rac2 rac2.oracle.com 192.0.2.14 rac2-vip 192.0.2.15 rac-scan 192.168.2.11 rac1-priv 192.168.2.12 rac2-priv 安装介质 linuxx64_12201_database.zip linuxx64_12201_grid_home.zip oracle linux 7.5.iso Oracle linux 7.5安装 操作步骤略过。 提下vmware 配置共享磁盘, 在vmx文件里添加如下参数 disk.enableUUID = "TRUE" disk.locking="FALSE" diskLib.dataCacheMaxSize = "0" diskLib.dataCacheMaxReadAheadSize = "0" diskLib.DataCacheMinReadAheadSize = "0" diskLib.dataCachePageSize = "4096" diskLib.maxUnsyncedWrites = "0" scsi1:1.SharedBus="Virtual" scsi1:2.SharedBus="Virtual" scsi1:3.SharedBus="Virtual" scsi1:4.SharedBus="Virtual" 配置yum mkdir /opt/media createrepo . yum clean all yum list [myrepo] name=myrepo baseurl=file:///opt/media gpgcheck=0 enabled=1 必备参数 用户 组 yum install oracle-database-server-12cR2-preinstall [root@rac1 yum.repos.d]# id oracle uid=54321(oracle) gid=54321(oinstall) groups=54321(oinstall),54322(dba),54323(oper),54324(backupdba),54325(dgdba),54326(kmdba),54330(racdba) 可以看到12c默认建了一些……

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