oracle rac cluster

. linux1.vip Cluster vip c online linux1 0Ora. linux2.vip Cluster vip c online linux2 0Ora. mmbo. db database c online linux1 0 OpenOra. mmbo. db database c online linux2 0 OpenOra. mmbo11g. db database c online linux1 0 OpenOra. net1.network Network (VIP) l online linux1 0Ora. net1.network Network (VIP) l online linux2 0Ora. Enter c offline () 0Ora. ons Ora Notif Svc l online linux1 0Ora. ons Ora Notif Svc

1. RAC global wait Event Description In the RAC environment, the most common wait events related to global cache adjustment are global cache Cr request, global cache busy, and equeue. When a process needs to access one or more blocks, Oracle first checks whether the block exists in its cache, the shared access permission is granted to these blocks through global

Deep understanding of Oracle RAC 12cJump to: Navigation, search Directory 1 Overview 2 Cluster parts management and fault diagnosis 3 Operational Practices 4 new Features 5 Storage and ASM 6 problems in application design 7 managing and tuning a complex RAC e

Oracle Study-aix6.1 Building Oracle 10GR2 RAC (5)First, install Oracle softwareInstall as Oracle:650) this.width=650; "Src=" http://img.blog.csdn.net/20160401111416770?watermark/2/text/ Ahr0cdovl2jsb2cuy3nkbi5uzxqv/font/5a6l5l2t/fontsize/400/fill/i0jbqkfcma==/dissolve/70/gra

Look at me today this single node 12C RAC, suddenly feel that the disk group of OCR is called +dg_sys a little uncomfortable, want to change to +SYS_DG. The approach is to migrate the Ocr/votedisk/asm SPFile to an existing ASM, and then modify the disk group name and finally migrate to the new name Disk group (this process +DG_SYS-GT;+DATA-GT;+SYS_DG)Current operating conditions[Grid@xifenfei ~]$ crsctl status res-t------------------------------------

In 11.2, the CRSD process is no longer one of the most critical processes in RAC. If you are familiar with 10g RAC, you should be aware of the importance of the CRSD process, and Oracle starts the process and then launches the entire cluster and database after the operating system starts. In the 11.2

Migrate a single oracle instance to RAC through dataguard One instance primary to RAC standbyDataGuard Configuration: Primary Standby Clusterware Oracle Database 11g Enterprise Edition Release 11.2.0.4.0-64bit 11g R2 Grid Infrastructure (11.2.0.4)

Practicing Oracle's RAC build process, the first step is to practice installing Oracle 10.2.0.1.0 on 4U4 first. Installing RAC directly is somewhat difficult. From a simple start. For the total RAC Step, refer to the RAC form of the teacher.1. Start VC, login vsphere 5.1,2.

' node2 ' succeeded crs-2672: attemptingtostart ' ORA.CTSSD ' on ' Node2 'Failure with signal 2 from command:/u01/11.2.0/grid/bin/crsctl start resource ora.ctssd-init-env Usr_ora_env=ctss_reboo T=trueStart of resource "Ora.ctssd-init-env Usr_ora_env=ctss_reboot=true" failedFailed to start CTSSFailed to start Oracle clusterware stackOracle Root Script Execution aborted!-----Failed to start the CTSSD process!The check found that the following error occ

The most outstanding performance of Oracle RAC clusters is high availability, which mainly includes load balance and failover. These technologies enable single point of failure (spof) to prevent normal access to the database by client applications, and load balancing between nodes by creating a service. This article describes the Oracle failover test in the

with asm, close and report an error.Oracle 11g rac:1. Close the database first:Oracle $ srvctl stop database-d rac (set the database name as needed)2. Disable the crs service.[Root @ rac1 ~] #/Opt/11202/11 .2.0/grid/bin/crsctl stop crsCRS-2791: Starting shutdown of Oracle High Availability Services-managed resources on 'rac1'CRS-2673: Attempting to stop 'ora. cr

Tags: Many move Vol Ice object ber LEDs help simpleIntroduction: This article was written because one of my students recently set up a RAC cluster in the company, but the sequence and principle of its start-up and shutdown is not particularly clear, I also found in teaching work a lot of students know very little about RAC knowledge, So I am here to the

Generally, in the Oracle RAC environment, V $ view can query information about the instance you are connected to, while GV $ view contains information about all instances. However, in the RAC environment, when we query the V $ log view, it is common sense that the V $ log view should see the information of the log group that you connect to the instance. However,

RAC is a cluster of Oracle companies, and there are many articles on the web that introduce the RAC configuration. But holding these wonderful documents doesn't necessarily make the RAC configuration successful. Because RAC is a v

RAC is a cluster of Oracle companies, and there are many articles on the web that introduce the RAC configuration. But holding these wonderful documents doesn't necessarily make the RAC configuration successful. Because RAC is a v

===================================================================================-----------------------------------------------------------------------------------# 0.1 System time/time zone-----------------------------------------------------------------------------------# date# Cat/etc/timezone# Cat/etc/default/tz# echo $TZ-----------------------------------------------------------------------------------# 0.2 Detecting kernel parameters/asynchronous io/network parameters# async IO file per

Tags: how Oracle database information is archivedOracle RAC Archive settings need to be less simple than single-instance setup, with some details to be noticed during the open processArchive Open Ideas:1: See if the database is open for archiving2: Create a shared directory (archive must be placed on shared storage)3: Set RAC to single-instance mode4: Close indiv

OCR corresponds to the registry of Windows. For Windows, all software information, users, configuration, security, and so on are all in the registry. And the cluster, again, all cluster-related resources, configurations, nodes, and RAC databases are all in this warehouse. If OCR is corrupted, the Cluster service initia