RAC装在NFS前提准备
作者 佚名技术
来源 Linux系统
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发布时间 2012-04-29
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Oracle <?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" />10g RAC On Linux Using NFS<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />
This article describes the installation of Oracle 10g release 2 (10.2.0.1) RAC on Linux (Oracle Enterprise Linux 4.5) using NFS to provide the shared storage.
- Introduction
- Download Software
- Operating System Installation
- Oracle Installation Prerequisites
- Create Shared Disks
- Install the Clusterware Software
- Install the Database Software
- Create a Database using the DBCA
- TNS Configuration
- Check the Status of the RAC
- Direct and Asynchronous I/O
Introduction
NFS is an abbreviation of Network File System, a platform independent technology created by Sun Microsystems that allows shared access to files stored on computers via an interface called the Virtual File System (VFS) that runs on top of TCP/IP. Computers that share files are considered NFS servers, while those that access shared files are considered NFS clients. An individual computer can be either an NFS server, a NFS client or both.
We can use NFS to provide shared storage for a RAC installation. In a production environment we would expect the NFS server to be a NAS, but for testing it can just as easily be another server, or even one of the RAC nodes itself.
To cut costs, this articles uses one of the RAC nodes as the source of the shared storage. Obviously, this means if that node goes down the whole database is lost, so it''s not a sensible idea to do this if you are testing high availability. If you have access to a NAS or a third server you can easily use that for the shared storage, making the whole solution much more resilient. Whichever route you take, the fundamentals of the installation are the same.
This article was inspired by the blog postings of Kevin Closson.
Download Software
Download the following software.
- Oracle Enterprise Linux
- Oracle 10g (10.2.0.1) CRS and DB software
Operating System Installation
This article uses Oracle Enterprise Linux 4.5, but it will work equally well on CentOS 4 or Red Hat Enterprise Linux (RHEL) 4. A general pictorial guide to the operating system installation can be found here. More specifically, it should be a server installation with a minimum of 2G swap, firewall and secure Linux disabled and the following package groups installed:
- X Window System
- GNOME Desktop Environment
- Editors
- Graphical Internet
- Server Configuration Tools
- FTP Server
- Development Tools
- cd /u02/clusterware
./runInstallerOn the "Welcome" screen, click the "Next" button.
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