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Course Objectives
Wind This course explains the Oracle RAC
I. Introduction
One of the most effective ways to familiarize yourself with Oracle's true application cluster (RAC) 10g technology is to access an actual Oracle RAC 10g cluster. There is no way to better understand their benefits than simply experiencing them-including fault
Label:To the new company, the company is using RAC, I am more familiar with MySQL third-party cluster scheme Galera cluster This kind of multi-master cluster, The following is a comparison of the assumptions that I made about the RAC, and then the guesswork level that I did
Tags: oracle 12C RAC cluster log ([Email protected] ~]$ AdrciAdrci:release 12.2.0.1.0-production on Thu Mar 1 09:25:45 2018Copyright (c) 1982, Oracle and/or its affiliates. All rights reserved.ADR base = "/u01/u01/grid"Adrci> Show HomesADR Homes:diag/asm/user_root/host_3751460993_107diag/asm/user_grid/host_3751460993_1
Oracle Cluster (RAC) startup and shutdown
The following points need to be noted when Oracle RAC starts and shuts down:
First, check the shared device
Second, automatically start RAC and
ORA.SCAN1.VIP NB Sp 1 online online RHEL1 NBS P ORA.SCAN2.VIP NB Sp 1 online online RHEL2 NBS P ORA.SCAN3.VIP NB Sp 1 online online RHEL2 As can be seen from the above state, both the target and the value of the Ractest1 and Ractest2 two instances of the Ractest database are offline. Try to change this state by doing the following:[Oracle@rhel1 ~]$ Srvctl
installation files? Installing the cluster software under the Oracle Grid infrastructure Architecture? Install the database software and create the databaseIV: Managing Oracle DB Instances and RAC databases? Oracle RAC Database m
. You can run the following command to start and close related processes at a time.
[Root @ rac2 bin] #./crs_stop-all
[Root @ rac2 bin] #./crs_start-all
Iii. manually start RAC
Generally, all services are automatically started each time a node is started. If you need to disable or start a node, as shown below:
Stop
3.5. Install the ORACLE11GR2 database software with 3.5.1. Install Oracle 11GR2 DBLog on to node one with the Oracle user, switch to the Software installation directory, and perform the installation.
In Oracle user installation, first extract two Oracle installation files in one folder
[[emai
Note: This article is excerpt from Zhang Xiaoming Oracle RAC: Cluster high availability backup and recoveryBecause the cluster environment needs multiple computers to work together, to achieve the ideal state, we must consider the new challenges facing the cluster environmen
Failed to upgrade Oracle Cluster Registry configuration, raccluster during 10g rac Installation
Failed to upgrade Oracle Cluster Registry configuration was encountered during 10g rac installation, because the BUG was triggered by
/M02/83/DA/ Wkiol1d-fisrztqyaae3obxqws0129.png-wh_500x0-wm_3-wmp_4-s_2998259665.png "alt=" Wkiol1d-fisrztqyaae3obxqws0129.png-wh_50 "/>Use Ntpdate to synchronize the system time with the NTP server and write to the hardware clock, the Ntpdate service starts from the boot.Ntpdate 0.centos.pool.ntp.orgHwclock-wChkconfig ntpdate on650) this.width=650; "title=" Qq20160707164638.png "src=" http://s4.51cto.com/wyfs02/M01/83/DA/ Wkiol1d-fvrjxtihaacrtlswtzo17
315rac01Node 2:315rac02 PRIV_RAC02 315RAC02Creating OCR keys for user ' root ', privgrp ' root '.Operation successful.Now formatting voting device:/DEV/RAW/RAW3Now formatting voting device:/DEV/RAW/RAW4Now formatting voting device:/DEV/RAW/RAW5Format of 3 voting devices complete.Startup'll is queued to init within seconds.Adding daemons to InittabExpecting the CRS daemons to being up within-seconds.CSS is active on these nodes.315rac01CSS is inactive on these nodes.315rac02Local node checking c
Briefly describe the process of adding a node in the Oracle 10203 for Solaris SPARC Dual-node environment. Shared storage is already configured on a third node, which focuses on the configuration on the operating system and on Oracle.
This article describes the establishment of cluster software.
On the new node racnode3, authorize the bare devices on the shared
The first is several terms that need to be understood: a cluster refers to the physical connection of multiple computers. RAC is short for Oracle Real Application cluster. Official Chinese documents are generally translated as "real application cluster". It generally consist
' ora.asm ' on ' Orcl-2 ' succeededCrs-2677:stop of ' ora.ctssd ' on ' Orcl-2 ' succeededCrs-2673:attempting to stop ' ora.cssd ' on ' orcl-2 'Crs-2677:stop of ' ora.ctssd ' on ' orcl-1 ' succeededCrs-2677:stop of ' ora.cssd ' on ' Orcl-2 ' succeededCrs-2673:attempting to stop ' Ora.diskmon ' on ' orcl-2 'Crs-2677:stop of ' ora.asm ' on ' orcl-1 ' succeededCrs-2673:attempting to stop ' ora.cssd ' on ' orcl-1 'Crs-2677:stop of ' ora.cssd ' on ' orcl-1 ' succeededCrs-2673:attempting to stop ' Ora
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