1 PB = 1024 TB ; 1 EB = 1,024 PB = 1,048,576 TB = 260 bytes

真真算不过来了。。。。

[@more@]The maximum amount of data M that can be stored in the Oracle database can be calculated using the formula: M = D * F * B, where D is the maximum number of data files in the database, F is the maximum number of blocks per data file, and B is the maximum block size.
With the older limits (D = 64 KB, F = 4 M, and B = 32 KB), the value of M is 8 PB, or 2 PB for the most typical 8 KB block size.