TDE and execution plans

From: Hameed, Amir <>
Date: Tue, 11 Mar 2014 15:18:13 +0000
Message-ID: <>

We are looking into implementing the Oracle eBilling software and will most likely deploy it in a PCI compliant architecture and configuration. As part of securing sensitive data on disk, we may use the TDE feature of Oracle RDBMS ( and it could be at the tablespace level or at the column level. As I understand it, TDE might have an impact on some of the execution plans in that for indexes that contain encrypted columns, the optimizer might not perform range scans and opt for FTS instead. This is primarily driven by the way encrypted columns are sorted and stored in indexes before and after encryption. Does anyone have a first-hand experience with TDE and would like to share their experience in the context of performance overhead and issues?

Any feedback will be appreciated.


Received on Tue Mar 11 2014 - 16:18:13 CET

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