Exadata Technical Overview - Oracle
Exadata Technical Overview - Oracle
Exadata Technical Overview - Oracle
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What were<br />
my sales<br />
yesterday?<br />
29<br />
Simple Query Example<br />
<strong>Oracle</strong> DB<br />
Grid<br />
Copyright © 2012, <strong>Oracle</strong> and/or its affiliates. All rights reserved.<br />
Select sum (sales)<br />
where Date=‘24-Sept’<br />
Optimizer Chooses<br />
Partitions & Indexes<br />
to Access<br />
• 10 TB scanned<br />
• 1 GB returned<br />
to servers<br />
<strong>Exadata</strong><br />
Storage<br />
Grid<br />
• Scan compressed blocks in<br />
partitions / indexes<br />
• Retrieve sales amounts for<br />
Sept 24
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