PQ62558: 'EVERY TIME YOU START INTERNET EXPLORER' SELECTED IN INTERNET EXPLORER DOES NOT DISPLAY NEXT PAGE TO BE DISPLAYED

APAR status
Closed as user error.

Error description
With 'Every visit to the page' selected, the application
works correctly and when selecting Configuracion from
the Lista de 0000 page, Lista de 0001 is displayed containing
all 25 options. However with 'Every time you start Internet
Explorer selected, when selecting Configuracion from the Lista
de 0000 page, this page is redisplayed still containing the
original 3 options.  The new page is never displayed.
Local fix
Use HTTP Transport Handler, or use 'Every visit to the page'.
Problem summary Problem conclusion Temporary fix Comments
The Web application is not working properly with browser caching
on because some of the deployed JSPs cannot be displayed if the
browser is caching the pages.

The application will only work with Microsoft IE when the
browser setting for "Check for newer versions of stored pages"
is set to "Every visit to the page". With this setting we
disable the browser's cache.

The problem is that the application "menu.jsp" is generating
different responses. If you are going to use caching
you cannot generate different responses for the same request.
The browser will cache the first "menu.jsp" response and never
re-drive menu.jsp to generate the alternate response.

The HTTP Server sets the "Last-Modified: " header to
current date/time on responses that are generated by GWAPIs.
Websphere Application Server is a GWAPI.
The HTTP Transport Handler does not set this header.

When a response has a "Last-Modified:" header, Micrososft I/E
will cache it and will determine a TTL (time to live) value
based on that header. So, in the case of the HTTP Server,
the menu.jsp was being cached and this cached version was
being used on subsequent menu.jsp requests.
In the case of the HTTP Transport Handler , with no
"Last-Modified:" header set, menu.jsp was being cached,
but Microsfot I/E considered it stale for each subsequent
request and drove a menu.jsp request to WebSphere for z/OS.

SOLUTION :
Set "NoLastMod on" directive in httpd.conf.
If "NoLastMod on" is specified the Last-Modified header will not
be set.
APAR information
APAR number PQ62558
Reported component name WEBSPHERE OS/39
Reported component ID 5655A9800
Reported release 401
Status CLOSED USE
PE NoPE
HIPER NoHIPER
Submitted date 2002-06-24
Closed date 2002-09-12
Last modified date 2002-09-12

APAR is sysrouted FROM one or more of the following:

APAR is sysrouted TO one or more of the following:

Modules/Macros

Fix information

Applicable component levels


Document Information


Product categories: Software > Application Servers > Distributed Application & Web Servers > WebSphere Application Server for z/OS
Operating system(s):
Software version: 401
Software edition:
Reference #: PQ62558
IBM Group: Software Group
Modified date: Sep 12, 2002