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RECYCLEBIN in Oracle

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What is Recycle Bin
Oracle has introduced "Recycle Bin" Feature Oracle 10g to store all the dropped objects.
If any table in Oracle 10g is dropped then any associated objects to this table such as indexes,
constraints and other dependant objects are simply renamed with a prefix of BIN$$.

Why Recycle Bin
A user drops a very important table--accidentally, of course--and it needs to be revived as soon as possible.