Uncategorized

Oracle Real Application Clusters 101: What you should know

 Oracle Real Application ClustersOracle Real Application Clusters database has two or more instances that have background processes and memory structures.

Clusters are interconnected servers or computers that look like they are just one server or computer to applications and end users.  In using Oracle Real Application Clusters (RAC), you can cluster your databases.  These may look and work like a single database, but there are some things that are different.  For one, single instance databases have a 1:1 relationship between the instance and the database itself.  In Oracle Real Application Clusters, it can involve 100 instances accessing only one database.

Here is what you should know about Oracle Real Application Clusters’ architecture.

Oracle Real Application Clusters works on a shared-everything principle, which means that all the control files, data files, SPFILEs and redo logs are located in cluster-aware shared disks that are accessible to all cluster database instances.  This means that database files for Oracle Real Application Clusters need to be stored in a cluster-aware storage.  You can choose how you are going to configure your disk, but the storage should be cluster-aware.  This means that you are limited to using:

  • Automatic Storage Management
  • Oracle Cluster File System
  • A network file system
  • Raw devices

What’s more, all nodes in the Oracle Real Application Clusters environment should be connected to a LAN so that applications and users can access that database using the Oracle Database services feature.

The Oracle Database services feature allows you to institute rules and control over how users connect to the database.

You can use a client/server configuration to allow users to access your Oracle Real Application Clusters database.  These are reserved for power users who create their own searches, such as the database administrators, data miners, application users and other power users.  Public networks, however, use TCP/IP or any supported software and hardware.  You can access Oracle Real Application Clusters instances via the database’s default IP address or any VIP addresses.

You should also assign virtual host names and IP addresses to all your nodes.  Here, virtual host names and IP addresses would be used to connect to your database instance.

The Oracle Real Application Clusters Components

The Oracle Real Application Clusters database has two or more instances that have background processes and memory structures.  It will have the same memory structures and processes as a single instance database, plus those that are unique to Oracle Real Application Clusters.

If you are struggling working with Oracle Application Clusters, or if you simply want to learn more about it, call Four Cornerstone today.  We have a team of certified Oracle experts who could easily teach you more about Oracle Application Clusters, its architecture, how it is designed, and, more importantly, how to deploy it.  We can help you with everything that is related to Oracle and MySQL. Four Cornerstone offers database performance tuning, data warehousing, disaster recovery, remote Oracle DBA support, database development, database environment assessment and extensive MySQL support. We can also assist you with your software licensing needs.

Talk to or contact us at https://fourcornerstone.com/contact.

Article Source: Oracle

Photo courtesy of Oracle.

Uncategorized

Security Trends For 2024: SBOMs

A recent article on Forbes, linked below, lists five security trends that are likely to be important in 2024. Of course, AI-related security topics top...

Keep Reading

Uncategorized

Getting started with your first…

Anyone looking at writing their first Generative AI application should read this to save time. In June 2023, Google Cloud published a useful blog post,...

Keep Reading

Uncategorized

Read-Write and Read-Only query splitting…

Optimize the usage of the standby (secondary) read-only MySQL InnoDB Cluster servers by automatically and transparently distributing read-queries to them. A great feature in MySQL...

Keep Reading

Uncategorized

Considering Cloud Diversification?

Moving an enterprise to a Public Cloud can quickly feel like moving into a locked-in relationship with the Cloud vendor. One solution to diminish this...

Keep Reading

Uncategorized

Gartner: Global cloud consumption will…

Gartner forecasts that 2024 will see a 20% global cloud consumption increase from 2023 to $679B, while 2023 has seen an 18% increase from 2022...

Keep Reading

Uncategorized

ByteDance: Use AI for tuning…

ZDNet is reporting that a ByteDance (the maker of TikTok) Linux kernel developer has proposed to implement AI to tune the performance of Linux systems...

Keep Reading

AI Governance

What is AI TRiSM?

If reading now about AI TRiSM for the first time, it might be good read on and learn what it’s about because it leads the...

Keep Reading

Cloud Blog

4 Ways To Benefit from…

One of the benefits you get when you work with cloud applications is that you often have quarterly updates that are packed with features. This...

Keep Reading

Artificial Intelligence

Data and Analytics: Cross the…

  Artificial intelligence is a manna sent from digital heaven. That’s how blessed your business can get if you immerse into the AI of things....

Keep Reading

Business Intelligence Blog

How Brand Names Survive in…

  The age of digital marketplace has made it possible for unknown and smaller companies to compete with better-known and well-established brands. Take for example...

Keep Reading

Live Chat | Emergency