Updating date in oracle
In 2010, after the purchase of Sun by Oracle, the Grid Engine 6.2 update 6 source code was not included with the binaries, and changes were not put back to the project's source repository.
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Dates, Time Stamps, and Intervals in PL/SQL Most applications require the storage and manipulation of dates and times.
Unlike strings and numbers, dates are quite complicated: not only are they highly formatted data, but there are also many rules for determining valid values and valid calculations (leap days and years, daylight saving time changes, national and company holidays, date ranges, and so on).
Multiple shadow masters can also be configured as hot spares, which take over the role of the master when the original master host crashes.
Univa is providing commercial support and training for Univa Grid Engine and Oracle Grid Engine.
On October 22, 2013 Univa announced it acquired the intellectual property and trademarks for the Grid Engine technology and that Univa will take over support.