Fixes are available
PM30108; 7.0.0.15: cannot forward. response already committed on spnego system
7.0.0.17: Java SDK 1.6 SR9 FP1 Cumulative Fix for WebSphere Application Server
7.0.0.27: Java SDK 1.6 SR13 FP2 Cumulative Fix for WebSphere Application Server
7.0.0.19: Java SDK 1.6 SR9 FP2 Cumulative Fix for WebSphere Application Server
7.0.0.21: Java SDK 1.6 SR9 FP2 Cumulative Fix for WebSphere
7.0.0.23: Java SDK 1.6 SR10 FP1 Cumulative Fix for WebSphere
7.0.0.25: Java SDK 1.6 SR11 Cumulative Fix for WebSphere Application Server
7.0.0.27: Java SDK 1.6 SR12 Cumulative Fix for WebSphere Application Server
7.0.0.29: Java SDK 1.6 SR13 FP2 Cumulative Fix for WebSphere Application Server
7.0.0.45: Java SDK 1.6 SR16 FP60 Cumulative Fix for WebSphere Application Server
7.0.0.31: Java SDK 1.6 SR15 Cumulative Fix for WebSphere Application Server
7.0.0.35: Java SDK 1.6 SR16 FP1 Cumulative Fix for WebSphere Application Server
7.0.0.37: Java SDK 1.6 SR16 FP3 Cumulative Fix for WebSphere Application Server
7.0.0.39: Java SDK 1.6 SR16 FP7 Cumulative Fix for WebSphere Application Server
7.0.0.41: Java SDK 1.6 SR16 FP20 Cumulative Fix for WebSphere Application Server
7.0.0.43: Java SDK 1.6 SR16 FP41 Cumulative Fix for WebSphere Application Server
APAR status
Closed as program error.
Error description
The error is observed by following steps. 1) Attempt to hit a security protected Connections page like /files/login from a non-SPNEGO client system 2) Exception in logs: [9/9/10 10:03:14:783 CST] 0000004b LotusConnecti E Cannot forward. Response already committed. java.lang.IllegalStateException: Cannot forward. Response already committed. at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.forward (WebAppRequestDispatcher.java:169) at com.ibm.ws.webcontainer.servlet.FilterProxyServlet.dispatch (FilterProxyServlet.java:88) at com.ibm.ws.webcontainer.servlet.FilterProxyServlet.service (FilterProxyServlet.java:62) at com.ibm.ws.webcontainer.servlet.ServletWrapper.service (ServletWrapper.java:1655) at com.ibm.ws.webcontainer.servlet.ServletWrapper.service (ServletWrapper.java:1595)
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All users of IBM WebSphere Application * * Server who configure SPNEGO (The Simple * * and Protected GSS-API Negotiation * * authentication for Lotus Connection * **************************************************************** * PROBLEM DESCRIPTION: "Cannot forward. Response already * * committed." error is thrown in the log * **************************************************************** * RECOMMENDATION: * **************************************************************** When user tries to access Lotus Connection application from a machine that is not part of the domain, SPNEGO token is not sent to WebSphere Application Server. In this case, SPNEGO authentication fails and the Application Server commits the response to show "NTLM Token received" error page. At the same time the Lotus Connection application tries to forward the page to its main login page because SPNEGO authentication did not happen. This will cause many error messages in the log. After the error message, user is eventually presented Lotus Connection main login page.
Problem conclusion
Code has been updated in WebSphere Application Server so Lotus Connection will not encounter page forwarding error when NTLM token is received. The code also handles the case when Lotus Connection is not installed so the error page is presented on the browser. APAR is currently targeted for inclusion in fix pack 7.0.0.17. Please refer to the Recommended Updates page for delivery information: http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980
Temporary fix
Comments
APAR Information
APAR number
PM30108
Reported component name
WEBSPHERE APP S
Reported component ID
5724J0800
Reported release
700
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2011-01-10
Closed date
2011-02-17
Last modified date
2011-02-17
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Fixed component name
WEBSPHERE APP S
Fixed component ID
5724J0800
Applicable component levels
R700 PSY
UP
Document Information
Modified date:
27 October 2021