CMAN: ORA-12564 Using Native Encryption Settings at Connection Manager Server or CMAN
(Doc ID 1538702.1)
Last updated on MARCH 31, 2022
Applies to:Oracle Net Services - Version 184.108.40.206 to 220.127.116.11 [Release 11.2 to 12.2]
Advanced Networking Option - Version 18.104.22.168 to 22.214.171.124 [Release 11.2 to 12.2]
Information in this document applies to any platform.
Attempting to implement native encryption or assure integrity in a client-server connection that goes through CMAN. The following sqlnet.ora parameters have been added to the sqlnet.ora on CMAN server at $ORACLE_HOME/network/admin or $TNS_ADMIN (or CMAN.ORA):
Connections via this CMAN start to fail with the following error:
TNS-12564: TNS: Connection refused
If aso_authentication_filter is set to on (or aut=on) in CMAN rules, then the client connections can fail with ORA-12564.
If trying to encrypt a client-server connection by adding these sqlnet.ora parameters in sqlnet.ora on CMAN server, these setting are ignored by CMAN.
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