Oracle Database B10772-01 Administrator's Manual page 195

If the SSL_CLIENT_AUTHENTICATION parameter is set to
Note:
true in the sqlnet.ora file, then disable all cipher suites that use
Diffie-Hellman anonymous authentication. Otherwise, the
connection fails.
To specify client cipher suites:
Navigate to the SSL tab of the Oracle Advanced Security window in Oracle Net
1.
Manager, and select Configure SSL for Client.
In the Cipher Suite Configuration region, click Add. A dialog box displays
2.
available cipher suites
Select a suite and click OK. The Cipher Suite Configuration list is updated
3.
(Figure 7–6):
Figure 7–6 Oracle Advanced Security SSL Window (Client)
(Figure 7–2).
Configuring Secure Sockets Layer Authentication 7-29
Enabling SSL