CMAN: ORA-12529: TNS:connect Request Rejected Based On Current Filtering Rules (Doc ID 2001767.1)

Last updated on FEBRUARY 13, 2017

Applies to:

Oracle Net Services - Version 11.2.0.4 to 12.1.0.2 [Release 11.2 to 12.1]
Information in this document applies to any platform.

Symptoms

Attempting to use a CMAN proxy in an environment with a NAT (Network Address Translator)

Remote client connections are failing with this message:

C:\Users\admn1715>sqlplus system/xxxxxx@MYORCL

SQL*Plus: Release 11.2.0.4.0 Production on Tue Apr 14 18:26:41 2015

Copyright (c) 1982, 2013, Oracle. All rights reserved.

ERROR:
ORA-12564: TNS:connection refused

Might also return:

TNS-12529: TNS:connect request rejected based on current filtering rules




The CMGW trace shows:

[15-APR-2015 17:56:21:922] nspsend: transport write error
[15-APR-2015 17:56:21:922] nspsend: error exit
[15-APR-2015 17:56:21:922] nscon: error sending NSPTCN packet
[15-APR-2015 17:56:21:922] nserror: entry
[15-APR-2015 17:56:21:922] nserror: nsres: id=3, op=67, ns=12571, ns2=12560; nt[0]=505, nt[1]=110, nt[2]=0; ora[0]=0, ora[1]=0, ora[2]=0
[15-APR-2015 17:56:21:922] nscon: exit (-1)
[15-APR-2015 17:56:21:922] nsdo: nsctxrnk=0
[15-APR-2015 17:56:21:922] nsdo: error exit
[15-APR-2015 17:56:21:922] nsclose: entry

Cause

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