PI63193: SRVE8094W HAPPENS EVEN IF INVOKEFLUSHAFTERSERVICEFORSTATICFILE=FALSE

Fixes are available

APAR status

Closed as program error.

Error description

The customer migrated their application from V7.0 to
V8.0/V8.5.5.

Despite these settings

com.ibm.ws.webcontainer.invokeflushafterservice
com.ibm.ws.webcontainer.invokeflushafterserviceforstaticfile

Response was seen to be already committed.

?16/04/08 12:56:05:574 JST? 00000010 SRTServletRes W
com.ibm.ws.webcontainer.srt.SRTServletResponse setHeader
SRVE8094W:
?P?? :  ?s?????????S?X???g?u?????
?n?}?{.??p???v???n???[?m?b?u
?16/04/08 12:56:05:575 JST? 00000010 SRTServletRes <
com.ibm.ws.webcontainer.srt.SRTServletResponse setHeader RETURN
Response
already committed

?16/04/08 12:56:05:575 JST? 00000010 SRTServletRes W
com.ibm.ws.webcontainer.srt.SRTServletResponse setHeader
SRVE8094W:
?P?? :  ?s?????????S?X???g?u?????
?n?}?{.??p???v???n???[?m?b?u
?16/04/08 12:56:05:576 JST? 00000010 SRTServletRes <
com.ibm.ws.webcontainer.srt.SRTServletResponse setHeader RETURN
Response
already committed

?16/04/08 12:56:05:576 JST? 00000010 SRTServletRes W
com.ibm.ws.webcontainer.srt.SRTServletResponse setHeader
SRVE8094W:
?P?? :  ?s?????????S?X???g?u?????
?n?}?{.??p???v???n???[?m?b?u
?16/04/08 12:56:05:577 JST? 00000010 SRTServletRes <
com.ibm.ws.webcontainer.srt.SRTServletResponse setHeader RETURN
Response
already committed

Local fix

Problem summary

****************************************************************
* USERS AFFECTED:  IBM WebSphere Application Server            *
*                  versions 8.5.5 and 9.0 and Websphere        *
*                  Application Server Liberty users of         *
*                  WebContainer.                               *
****************************************************************
* PROBLEM DESCRIPTION: A SRVE8094W warning might occur when    *
*                      requesting a static file regardless     *
*                      of the value of                         *
*                      invokeFlushAfterService                 *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
If an application uses a
javax.servlet.http.HttpServletResponseWrapper and a
javax.servlet.Filter to modify the response headers after
service, a request to a static file might throw the following
warning message regardless of the setting of the
com.ibm.ws.webcontainer.invokeFlushAfterService and
com.ibm.ws.webcontainer.invokeFlushAfterServiceForStaticFile
WebContainer custom properties:
SRVE8094W: WARNING: Cannot set header. Response already
committed.

Problem conclusion

The WebContainer code has been modified to avoid invoking
flush on a wrapped response on a static file request.

A new WebContainer custom property needs to be set to false to
enable this behavior:

Name:
com.ibm.ws.webcontainer.invokeFlushAfterServiceForStaticFileResp
onseWrapper
Values: false / true (default)

This new property will change behavior similarly to
com.ibm.ws.webcontainer.invokeFlushAfterService and
com.ibm.ws.webcontainer.invokeFlushAfterServiceForStaticFile.
You will need to set these properties accordingly if you have
the following scenarios and want to avoid flushing the
response after service:

      -If submitting a request to a servlet and a
javax.servlet.http.HttpServletResponseWrapper is being used
without overwriting the flushBuffer API method, the
com.ibm.ws.webcontainer.invokeFlushAfterService custom
property needs to be set to false.

      -If submitting a request to a static file and a
javax.servlet.http.HttpServletResponseWrapper is being used
without overwriting the flushBuffer API method, the
com.ibm.ws.webcontainer.invokeFlushAfterServiceForStaticFileResp
onseWrapper custom property needs to be set to false.

      -If submitting a request to a static file and a
javax.servlet.http.HttpServletResponseWrapper is not being
used, the
com.ibm.ws.webcontainer.invokeFlushAfterServiceForStaticFile
custom property needs to be set to false.

These properties will not prevent flushing when the response
buffer is full during service.

Please refer to the following technote for instructions on
enabling WebContainer custom properties:

Full profile:
http://www.ibm.com/support/docview.wss?rss=180&uid=swg21284395
Liberty profile:
http://www-01.ibm.com/support/docview.wss?uid=swg2159775

The fix for this APAR is currently targeted for inclusion in
fix packs 8.5.5.11, 9.0.0.2 and 16.0.0.3. Please refer to the
recommended updates page for delivery information:

http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980

Temporary fix

Overwrite the flushBuffer method in the
HttpServletResponseWrapper to avoid flushing.

Comments

APAR Information

APAR number
PI63193
Reported component name
WEBSPHERE APP S
Reported component ID
5724J0800
Reported release
850
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2016-05-27
Closed date
2016-08-03
Last modified date
2016-08-03

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

R850 PSY
UP
R900 PSY
UP

[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSEQTP","label":"WebSphere Application Server"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"8.5","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
04 May 2022

Tips

PI63193: SRVE8094W HAPPENS EVEN IF INVOKEFLUSHAFTERSERVICEFORSTATICFILE=FALSE

Fixes are available

Subscribe

APAR status

Closed as program error.

Error description

Local fix

Problem summary

Problem conclusion

Temporary fix

Comments

APAR Information

APAR number

Reported component name

Reported component ID

Reported release

Status

PE

HIPER

Special Attention

Submitted date

Closed date

Last modified date

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

Fixed component ID

Applicable component levels

R850 PSY

R900 PSY

Document Information

Share your feedback

Need support?