|Database availability - An Oracle Corporation study|
There was a time when an average DBA with junior level skills could administer the average database. However, maintaining high availability is no small task in a client/server environment. In fact, providing around the clock, (24 hours a day, 7 days a week), availability requires your database to be virtually available without a margin for downtime. What is the cost for downtime? A recent survey shows that, businesses, on average, incur $1,300.00 of mean revenue loss per outage minute. This survey was performed on 450 companies in manufacturing, securities, health insurance, transportation, banking, retail, and telecommunications industries. Taking this study into account, a business that maintains 99% availability in a 24x7 environment (1% downtime), incurs approximately 5,000 minutes of downtime per year. This small amount of downtime equates to over $6 million dollars of lost revenues per year.
According to Oracle Corporation studies of client downtime, 34% of downtime can be attributed to operational outages, or outages that you can control. Another 36% of downtime is caused by design-related issues. Over half of the design-related issues are due to a lack of adequate documentation. Approximately 5% of downtime is caused by configuration issues and problems associated with the setup and installation of the database. All of these outages are issues that you can control and many times are attributed to poor DBA skills.
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