Performance difference due to encrypted connection pattern at 11g, 12c

(Doc ID 2407921.1)

Last updated on JUNE 07, 2018

Applies to:

Advanced Networking Option - Version 12.1.0.2 and later
Information in this document applies to any platform.

Goal

If there is encryption setting below, there is a fast connection and a slow connection.
Is this a problem ? Or product design ?

1) Oracle Client 11g (with encryption setting) → Oracle Database 12c (with encryption setting) 0.209 sec
2) Oracle Client 12c (with encryption setting) → Oracle Database 11g (with encryption setting) 0.185 sec
3) Oracle Client 12c (with encryption setting) → Oracle Database 12c (with encryption setting) 1.020 sec ★ Slow

Solution

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