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11gR2 : Oracle flash cache (exadata, non exadata also works), A secondary memory pool for your database buffer cache

In 11gR2, Oracle has introduced a cache called flash cache which is a secondary cache of the buffer cache. This flash cache is resides in L2 Cache of the system  (RAM) and can be very fast compare to the disk.  The SSD disks which gives you the benefit of high speed disks , the same […]

Basics: What is RAID?

Hello,

A Simple readable format about “What is RAID?”

RAID (Redundant Array of Independent Disks). A collection of disk drives that offers increased performance and fault tolerance. There are a number of different RAID levels. The three most commonly used are 0, 1, and 5:

Level 0: striping without parity (spreading out blocks of each […]