RAC services with server pools
Env: DB 12.1.0.2. | 4 node RAC cluster | OEL 6.x
All-
I'm working on a successful political VINE of the test databases. I think that is what Oracle recommends to go forward.
One of our enviornment product runs on 4 node RAC cluster (11g) and we use partitioning/Application Isolation.
1 to 3 knots: are used for the OLTP workload by using services
Node 4: is used for batch jobs/reports
We request for Isolation/segregation has helped to stabilize the RAC environment and we could avoid the famous CARS/Cluster waiting for questions.
While gong through documentation, I understand that we have only 2 options when configuring services with Pool. It can be UNIFORM or SINGLETON. I understand the server pools help a lot and make life easy for DBA (and that's why we have initiative to test)
but I couldn't know if the partitioning Application can be reached.
With Singleton services - we are not sure on which service instance will run. We cannot set specific settings for instance, which promotes the batch jobs/Heavy Reporting (great PGA may be increased multi block / County, if it is automatic and there could be several parameters).
And we cannot define same service that suppose to run on a subset of the Cluster, for example:-OLTP service that runs on 3 nodes.
Please help me clarify my doubts.
Thank you very much!
I do not understand your question, it looks pretty we would apply.
For example, if you want your service to run at three knots, OLTP problem: create a pool OLTP, place the four inside servers and specify min = 1 max = 3. Then create a second pool called lot, new place all four inside servers and specify min = 1 max = 1. Assign the database for two pools, and the services of a pool each, as uniform.
I have been using political management databases for many years and considered flexible enough. I never understood reluctance of others to use it.
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An Introduction to RAC 11.2 server pools & #8211; All things Oracle
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Yet, even in this case, you should have 1 VIP and 1 listener node by node rac. Saw 2 VIP on a node is only failover and a node without a VIP can support a listener running on the VIP. If the case in your Q3 will not happen even in a server pool.
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