oracle rac architecture

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 environment.1. Concurrency controlIn a clustered environment, critical data is usually stored concurrently, such as on a shared disk. The identit

Tags: OData method store Management RAC data causes error sharing technologyReprint please specify the original address: http://www.cnblogs.com/litou/p/8028843.html Environment: Oracle 11g 11.2.0.1.0 (Dual-node RAC cluster), ArcGIS Desktop 10.1. Typically, you need to store ArcGIS spatial data in the case of an Oracle

Modify Oracle RAC Database Name Briefly record some methods for modifying the name of Oracle RAC. 1. Close an instance [Oracle @ rac11g2 ~] $ Sqlplus/as sysdba SQL> shutdown immediate; 2. Back up the spfile File SQL> create pfile = '/home/

AIX 5.3 Under Oracle 10g RAC boot failure--crs boot failureSystem environment:Operating System: AIX 5300-09Cluster Software: CRS 10.2.0.1Database: Oracle 10.2.0.1System Architecture Diagram650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M02/26/B1/wKioL1NspizDELFmAAFqCT5td6k065.jpg "title=" r2.jpg "alt=" Wkiol1ns

Tags: style blog http io ar color OS using SPOracle RAC (12.1) installs virtual machines on Linux, step-by-step wizardtoday we will see how to installC version 1 RAC (real application cluster) database 2 Linux 64-bit virtual machineuse vmware or Oracle VirtualBox. Oracle's "C" C represents "Cloud"There are some important and interesting changes when installing a

4 scripts are required to perform RAC installation 1) $ORACLE _base/orainventory/orainstroot.sh (performed at end of Clusterware) 2) $CRS _home/root.sh (performed at end of Clusterware) 3) $CRS _home/bin/vipca.sh (the script is automatically invoked when the second node executes $crs_home/root.sh) 4) $ORACLE _home/root.sh (after installing the database to per

Oracle RAC also has ha (high availiablity) and lb (loadbalance). And its high availability is based on failover (failover). It means that the failure of any node in the cluster will not affect the user's use, the user connected to the failed node will be automatically transferred to the health node, from the user experience, is not feel this switch. The Oracle 1

Turn RAC off (Oracle 12C note) Turn RAC off (Oracle 12C note) Check RAC status [Grid @ rac01 ~] $ Crsctl check crs CRS-4638: Oracle High Availability Services is online CRS-4537: Cluster Ready Services is online CRS-4529: Cluster

....... If the table does not have a primary key or a unique key, a warning is generated, for example:22:53:11 warning OGG-00869 no unique key is defined for table udppackportset. All viable columns will be used to represent the key, but may not guarantee uniqueness. keycols may be used to define the key. Ggsci (Rac1) 19> Add trandata dyulcentermanage .*......Ggsci (Rac1) 20> Add trandata dyacdb34 .*......Ggsci (Rac1) 21> Add trandata dyulcenterm_bak .*...... There is no primary key or unique ke

OCR is equivalent to the Windows registry. For Windows, all software information, users, configurations, and security are stored in the registry. In the same way, all cluster-related resources, configurations, nodes, and RAC databases are stored in this warehouse. If OCR is damaged, the cluster Service Startup exception occurs. You need to fix OCR. Therefore, OCR management and maintenance are very important for the entire cluster. This document descr

Oracle 11g RAC listener offline After the Oracle 11g RAC listener has changed the network, the listener process offline appears, and the two nodes are switched frequently. Check the log/var/log/message to find frequent registration and revocation actions. Listening log/u01/app/orac