What is Oracle Grid Infrastructure – A Free Tutorial

What is Grid Infrastructure? (Hint: It is not Grid Control.)

It is still possible to run an Oracle database without Oracle Grid Infrastructure. But is it sensible?  And, if you want to use ASM – which we strongly recommend – you need GI!

In this tutorial you will learn how Grid Infrastructure can replace (or complement) third party products for RAID, network management, and high availability. At the same time, using these facilities can improve performance dramatically. Grid Infrastructure is the way Oracle is moving, and we want to show you that it is not necessarily complicated and can indeed make your life simpler. It can also save you money.

Content: live demonstrations of configuring and using Grid Infrastructure services with release 11g.

Audience: DBAs looking for entry level knowledge of what Grid Infrastruture can do.

Presenter: John Watson, Oracle Certified Master DBA

This free training is segmented into several separate lessons:

  1. Introduction (1:35)
  2. Why All Administrators Need to Know Grid Infrastructure (3:27)
  3. Intro to Network Administration with Grid Infrastructure (3:18) (click on video below)
  4. Demonstration – Network Administration with Grid Infrastructure (5:46)
  5. Network Administration with Grid Infrastructure Q & A (3:28)
  6. Grid Infrastructure Licensing Tips (1:21)
  7. Grid Infrastructure Storage Management, ACFS, the Cloud File System (5:00)
  8. Demonstration: ACFS, Cloud File System, Storage Management (4:02)
  9. High Availability with Oracle Grid Infrastructure (10:50)
  10. SQL Net Listening Architecture and SCAN (4:26)
  11. Conclusion: Planning for Oracle 11g / 12c Grid Infrastructure (1:16)

Date: Feb 21, 2013

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Intro to Network Administration with Grid Infrastructure

>> John:  In the arena of network management, I need to make sure that we are all – as if we’re on the same page with the manual. So for those of you who are already network administrators please bear with me. But for those of you who are not, you must remember that every IP address in the world will either be static or dynamic. 


Static addresses, one host name always results to the same address. A dynamic address, the host name could be assigned to any address at any one moment and the addresses will presumably have been assigned on the fly by DHCP server. 




Addresses then may be static or dynamic. 




Secondly, addresses will be fixed or virtual. A fixed address is tied to one physical address, one particular network card that always responds to that particular IP address. 




A virtual address can float around from machine to machine, from network card to network card. So every address we have will be either static or dynamic, fixed or virtual. 


Grid Infrastructure is working towards the use of dynamic virtual addresses. Why? Because dynamic virtual addresses give you the flexibility you need to manage changing topologies. In an ideal world, all addresses will be dynamic and virtual. 




Why? So the network can respond automatically to any changes and users will not be aware of the changes. 




What could these changes be? They could be relocating machines, they could be adding servers, removing servers, consolidating servers, perhaps changing from physical servers to a virtualized environment, even moving new environments from local physical servers to the cloud. 




Ideally, the network will make such changes transparent to the applications and the users. Your network management facilities need to ensure that the host names, the virtual host names will be assigned to virtual addresses that can float about to wherever they how come to be needed either a response to a deliberate reconfiguration of the topology or of course because of response to failures. 




Historically, this was done with third party products. But as an Oracle person I call them third party products that never done with operating system facilities. 


But now Grid Infrastructure can handle all of these. The integration with DHCP there is a certain amount but a very minimal amount of DNS configuration required and when you are assigning addresses dynamically – as always the issue – how do you tell your clients what address are particular host name actually is at this particular moment. 




Normally, historically, that would’ve been done with DNS. Now Grid Infrastructure does that. What is called the GNS ñ the Grid Naming Service which works with DNS. 




And of course Grid Infrastructure handles failover – automatic failover or manual.


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