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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



by Mike Ault

Remote DBA Services

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.

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