With Oracle Database 11g, shall I use TDE column encryption or TDE tablespace encryption?

Use TDE tablespace encryption if any of the following is true: • You are running Oracle Database 11g Release 2 Patchset 1 (11.2.0.2) on Intel® XEON® 5600 CPUs with AES-NI and like to experience 'near-zero impact' stored data protection with TDE tablespace encryption • You cannot find all columns with sensitive content • Data type and/or data length of sensitive column is not supported by TDE column encryption • Sensitive column is used as foreign key • Applications perform range scans over indexed, encrypted columns • You need index types other than B-tree over encrypted columns • more.

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