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Oracle10g Grid Computing with RAC
Chapter 3 - High Performance and Highly Available
Database Clusters

Fabric Fencing

Advantages of this approach:

  • Isolates the SAN access only
     

  • Permits non-SAN applications to continue to run
     

  • No extra hardware is required

Exclusion with STOMITH approach

This method uses a network controlled power switch to cut off a server’s power supply when it is no longer deemed to be a reliable member of the cluster. Some of the characteristics of this approach:

  • It is highly disruptive to the problem node.
     

  • It is universal - it operates on all resource types equally well, and simultaneously.
     

  • It is very simple in concept and in practice.
     

  • There are virtually no support problems or version interactions to complicate development, testing and maintenance.
     

  • Overall system availability is often helped by the reboot.

This method was adopted by Linux clusters in the earlier period of their growth and when the Linux SCSI reserve/release support was immature and not consistently implemented.


For more information, see the book Oracle 11g Grid and Real Application Clusters 30% off if you buy it directly from Rampant TechPress . 

Written by top Oracle experts, this RAC book has a complete online code depot with ready to use RAC scripts.


Oracle Consulting Services

Burleson Oracle Consulting offers Senior Oracle consultants which are available for all areas of Oracle support.  Common Oracle consulting support activities include short-term Oracle tuning, Oracle database troubleshooting, Oracle9i and Oracle10g migration, Oracle9iAS App Server consulting, Oracle design reviews and Oracle requirements evaluation support. Oracle support and Oracle consulting services are priced by the hour, so you only pay for what you need. These one-time Oracle consulting services commonly include:

  • Answering questions from your Oracle DBA technical staff

  • Repairing down production Oracle database systems

  • One-time Oracle tuning evaluation

  • Guru support for your Oracle DBA

  • Installation of Oracle application packages

For more information, please visit www.rampant-books.com .

   
 
 
 

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