Most Popular Exadata

Using Oracle Exadata Flash Cache

The Exadata flash cache makes use of flash memory to speed up access to commonly used data. Flash-based solid-state storage has latency times and I/O operation rates much higher than rotating storage, improving performance particularly in transaction-processing applications. The flash cache is stored on flash-memory cards on storage servers. The storage server software manages the […]

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Understanding Storage Indexes in Oracle Exadata

Storage indexes build on the smart scan functionality by dividing the physical table data into storage regions and tracking the highest and lowest values for each storage region. When a SELECT query is run on the table, the smart scan code can compare the saved high and low values with the where clause from the […]

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Understanding Oracle Exadata Storage

To understand Exadata’s performance, it’s helpful to look at traditional enterprise storage. Traditional storage is dominated by large storage area networks (SANs) and network attached storage (NAS) devices. These storage architectures help to share and manage storage among multiple client devices, but their main building blocks are large banks of rotating hard drives and solid-state […]

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