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Disk I/O Tuning

Chapter 3: ATA Tuning In Windows

  • Make sure the fastest hard drive is set as the master drive in an EIDE chain.
     

  • Adding additional RAM will reduce the systems dependence on drive space for virtual memory, thus improving throughput.

At the physical disk level in Windows, you should implement a defragmentation routine to make sure your drives are not fragmented.  Fragmentation in Windows is endemic to the operating system and will occur, robbing  you of up to 70% of your disk performance.  In one test, boot time went from over 15 minutes to less than 5 when the server’s disks were defragmented.  Performance improvements of a similar nature can be expected from your Oracle system if it is located on ATA drives in Windows as well.

Figure 2-6 shows a screen capture from a seldom used Windows 2000 system drive (all data and file storage is done to a shared file system).  Notice even a lightly used drive is showing over 20% fragmentation.  On a laptop using NT4.0 SP6a, after two years of work, the drive was 100% fragmented!  No wonder performance was terrible.


The above text is an excerpt from:

Oracle Disk I/O Tuning
Disk IO Performance & Optimization for Oracle Databases

ISBN

0-9745993-4-4 

by Mike Ault
 


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Burleson Consulting can offer world-class remote Oracle database support at super-affordable prices.

Our remote Oracle DBA service provides 100% of the remote Oracle database administration needs for your company, and includes 24x7 access to our staff of 100% OCP Certified Oracle DBAs. 

We require a 12 month service commitment and include the following services:

  • Initial configuration review and problem identification
  • Installation of Oracle statistics collection mechanisms and quarterly database growth summaries
  • Hourly monitoring of your Oracle database for pending problems
  • Periodic performance analysis & identification of tuning activities
  • Twenty Four hour Oracle emergency support
  • Reporting and resolving all serious Oracle alert log messages
  • Free use of the BC TablePack, ServerPack and AuditPack services
  • Quick response emergency support for production database outages
  • Four hours of free remote DBA support every month. You can use these free hours for any DBA activity, including database analysis, system design, production migrations or personal mentoring.

For more information, please visit www.oracle-training.cc or email info@remote-dba.net.

 
 
 

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