SSL Connection Failure Receiving Error CIC_ERR_SMALL_BUFFER In Trace Log (Doc ID 2088273.1)

Last updated on JANUARY 12, 2017

Applies to:

Oracle HTTP Server - Version 11.1.1.7.0 to 11.1.1.7.0 [Release Oracle11g]
Information in this document applies to any platform.

Symptoms

Oracle HTTP Server (OHS) version  11.1.1.7 is configured as proxy server in front of WebLogic 10.3.6. While accessing a WebService via a remote JAVA application and through OHS the process fails with these errors:

nzos handshake error, nzos_Handshake returned 28862(server server_name:port, client ip_address)
NZ Library Error: SSL IO error [Hint: the client stop the connection unexpectedly]

However, the web service can be reached successfully through the proxy using Firefox browser on the local machine.
When the WebService is called from the client application the following error is registered in the log file:

  https://hostname:ssl_port/webservice_application_name
  Caused by: java.net.SocketException: Connection reset

Request flow:
----------------
  Client application (Java) -> SSL -> OHS 11.1.1.7 (mod_wl_ohs) -> SSL ->WebLogic 10.3.6

STEPS
------
  1. Web service deployed to WebLogic 10.3.6
  2. OHS 11.1.1.7 proxying SSL requests to WebLogic via mod_ol_whs
  3. Client java application fails during SSL handshake with OHS when trying to access WebService

BUSINESS IMPACT
-----------------------
WebService is not accessible.

Cause

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