oracle rac course

Explain the environment: operating system: AIX 7.1Oracle version: Oracle RAC 11.2.0.3 before the 11.2.0.3.9 patch set, the RAC is not formally used, so you can simply hit the latest 11.2.0.3.11 patch set.The two sets of RAC that were newly installed today in the new PSU, also use Opatch Auto to hit the PSU, but one set

are Oracle to charge licence, others, as long as the experienced Third-party implementation to pay a certain planning/design and deployment costs can be, of course, you can follow the document according to the gourd, but the environment can be achieved high availability is hard to say. In fact, most people say that ha, or the narrow sense of ha, that is, OS-level dual-machine hot standby.RAC:is the short n

Installing Oracle RAC on the AIX platform is a pitfall. I verified this again today because there are too many bugs! Record the problem because there are too many bugs! We strongly recommend and look forward to the development of Oracle RAC on the Linux platform. The following is a record of the problem: > Server: IBM

if the related files are not deleted in the second part. 4. Delete the/etc/oracle/scls_scr/rac1/oracle/cssfatal files on each machine If you do not delete this file, you will get an error when running the root.sh script. Reference: RAC root.sh Oracle CRS solution already configured and'll be running under init (1M) Ht

Tags: NFS Install listen recommended move configuration between trading Geo Mic Directory Cache Fusion principle What is Cache Fusion? What is high availability The difference between FAILSAFE and RAC RAC and OPS differences Differences between hot standby, RAC, and Data guard for dual machines Communication between nodes (int

Sync Service (Cluster Synchronization Service)managing membership of a cluster node controls which node is the member of the cluster, the node notifies the cluster member when joining or leaving the cluster to control the cluster configuration information, which causes the cluster to restart, provides a heartbeat mechanism to monitor the cluster status (DISK HEARTBEAT and NETWORK Hearbeat), the process is run by Oracle User management EVMD Incident M

3.6. Cluster Management Command 3.6.1. Startup and shutdown of RAC Oracle RAC is powered on by default and can be used with the following commands if maintenance is required: Shut down:crsctl Stop cluster Stopping this node Cluster servicecrsctl Stop Cluster–all all node servicesOpen:crsctl start cluster turn on this node Cluster servi

message will be prompted. [Grid @ rac-one install] $./rootcrs. plYou must be logged in as root to run this script.Log in as root and rerun this script.2014-04-01 17: 08: 12: Not running as authorized userInsufficient privileges to execute this script.Root or administrative privileges needed to run the script. For more information about the script function, see-help. Such as upgrade, rollback, and reconfiguration wait [Root @

block read, and vice versa. Of course, multiple versions of Read consistency are as effective as RAC, but involve a bit of other work. System change Number (SCN) is an internal timestamp of Oracle and is important for read consistency. If the local instance requests a read-consistent version of a block, it needs to contact the block's resource master to determin

block read, and vice versa. Of course, multiple versions of Read consistency are as effective as RAC, but involve a bit of other work. System change Number (SCN) is an internal timestamp of Oracle and is important for read consistency. If the local instance requests a read-consistent version of a block, it needs to contact the block's resource master to determin

forward this request, triggering a new jump. From the discussion just now, you can know that coordination between blocks and their images in the global buffer cache cannot be underestimated. In RAC databases, cache convergence often represents the greatest benefit and the highest cost. The advantage is that cache fusion theoretically increases proportionally and may achieve almost linear scalability. However, the additional workload imposed by cache