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Index Builds

The next phase of the database build was the application of indexes. The index builds were also scripted and the times for each index build logged. These times demonstrate update performance via updates to indexes. Figure 3.4 shows the comparisons for all index builds between the SSD and SCSI/ATA databases on the dss_adminschema.

As with the insert testing the updates into the SSD array required 30% less time than the updates into the SCSI/ATA arrays. This compares favorably with other researchers results. The complete index build comparison statistics are shown in Appendix C.

Again, this shows that for update based activity and complex searching and sorting such is done with indexing, an SSD array will outperform standard technologies by at least 30%.

In the next phase, another complex task will be covered, the analyze runs to capture object statistics for the cost based optimizer.


The above book excerpt is from:

Oracle Solid State Disk Tuning

High Performance Oracle tuning with RAM disk

ISBN 0-9744486-5-6  

Donald K. Burleson & Mike Ault

http://www.rampant-books.com/book_2005_1_ssd.htm

  
 

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