On 03.04.2019 17:57, Kim, Chang H (JMD) wrote:
Yes, I see "GET" when I use my old tomcat 8.0.35.  However, my newly installed 
9.0.17, nothing...

Are you using the same browser/client in both cases ?
And are the connections to the old and new Tomcats the same also ? (I mean, are they in the same place, and are there the same in-between "pieces" - such as proxies, firewalls,..)



Thanks,

Kyle Kim
JMD

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-----Original Message-----
From: André Warnier (tomcat) <a...@ice-sa.com>
Sent: Wednesday, April 3, 2019 11:53 AM
To: users@tomcat.apache.org
Subject: Re: Issues upgrading to tomcat 9.0.17

On 03.04.2019 17:45, Kim, Chang H (JMD) wrote:
I had to remove the ip specific data, but this is what I am seeing in 
localhost_access_log.*.txt when I see "blank screen".

XX.XX.XX.XX - - [03/Apr/2019:11:41:14 -0400] "HEAD / HTTP/1.0" 200 -
XX.XX.XX.XX - - [03/Apr/2019:11:41:14 -0400] "HEAD / HTTP/1.0" 200 -
XX.XX.XX.XX - - [03/Apr/2019:11:41:18 -0400] "HEAD / HTTP/1.0" 200 -
XX.XX.XX.XX - - [03/Apr/2019:11:41:19 -0400] "HEAD / HTTP/1.0" 200 -
XX.XX.XX.XX - - [03/Apr/2019:11:41:23 -0400] "HEAD / HTTP/1.0" 200 -
XX.XX.XX.XX - - [03/Apr/2019:11:41:24 -0400] "HEAD / HTTP/1.0" 200 -
XX.XX.XX.XX - - [03/Apr/2019:11:41:28 -0400] "HEAD / HTTP/1.0" 200 -
XX.XX.XX.XX - - [03/Apr/2019:11:41:29 -0400] "HEAD / HTTP/1.0" 200 -
XX.XX.XX.XX - - [03/Apr/2019:11:41:33 -0400] "HEAD / HTTP/1.0" 200 -
XX.XX.XX.XX - - [03/Apr/2019:11:41:34 -0400] "HEAD / HTTP/1.0" 200 -
XX.XX.XX.XX - - [03/Apr/2019:11:41:38 -0400] "HEAD / HTTP/1.0" 200 -
XX.XX.XX.XX - - [03/Apr/2019:11:41:39 -0400] "HEAD / HTTP/1.0" 200 -
XX.XX.XX.XX - - [03/Apr/2019:11:41:43 -0400] "HEAD / HTTP/1.0" 200 -
XX.XX.XX.XX - - [03/Apr/2019:11:41:44 -0400] "HEAD / HTTP/1.0" 200 -
XX.XX.XX.XX - - [03/Apr/2019:11:41:48 -0400] "HEAD / HTTP/1.0" 200 -
XX.XX.XX.XX - - [03/Apr/2019:11:41:49 -0400] "HEAD / HTTP/1.0" 200 -
XX.XX.XX.XX - - [03/Apr/2019:11:41:53 -0400] "HEAD / HTTP/1.0" 200 -
XX.XX.XX.XX - - [03/Apr/2019:11:41:54 -0400] "HEAD / HTTP/1.0" 200 -
XX.XX.XX.XX - - [03/Apr/2019:11:41:58 -0400] "HEAD / HTTP/1.0" 200 -
XX.XX.XX.XX - - [03/Apr/2019:11:41:59 -0400] "HEAD / HTTP/1.0" 200 -
XX.XX.XX.XX - - [03/Apr/2019:11:42:03 -0400] "HEAD / HTTP/1.0" 200 -
XX.XX.XX.XX - - [03/Apr/2019:11:42:04 -0400] "HEAD / HTTP/1.0" 200 -
XX.XX.XX.XX - - [03/Apr/2019:11:42:08 -0400] "HEAD / HTTP/1.0" 200 -
XX.XX.XX.XX - - [03/Apr/2019:11:42:09 -0400] "HEAD / HTTP/1.0" 200 -
XX.XX.XX.XX - - [03/Apr/2019:11:42:13 -0400] "HEAD / HTTP/1.0" 200 -
XX.XX.XX.XX - - [03/Apr/2019:11:42:14 -0400] "HEAD / HTTP/1.0" 200 -
XX.XX.XX.XX - - [03/Apr/2019:11:42:18 -0400] "HEAD / HTTP/1.0" 200 -
XX.XX.XX.XX - - [03/Apr/2019:11:42:19 -0400] "HEAD / HTTP/1.0" 200 -
XX.XX.XX.XX - - [03/Apr/2019:11:42:23 -0400] "HEAD / HTTP/1.0" 200 -
XX.XX.XX.XX - - [03/Apr/2019:11:42:24 -0400] "HEAD / HTTP/1.0" 200 -
XX.XX.XX.XX - - [03/Apr/2019:11:42:28 -0400] "HEAD / HTTP/1.0" 200 -
XX.XX.XX.XX - - [03/Apr/2019:11:42:29 -0400] "HEAD / HTTP/1.0" 200 -
XX.XX.XX.XX - - [03/Apr/2019:11:42:33 -0400] "HEAD / HTTP/1.0" 200 -
XX.XX.XX.XX - - [03/Apr/2019:11:42:34 -0400] "HEAD / HTTP/1.0" 200 -
XX.XX.XX.XX - - [03/Apr/2019:11:42:38 -0400] "HEAD / HTTP/1.0" 200 -
XX.XX.XX.XX - - [03/Apr/2019:11:42:39 -0400] "HEAD / HTTP/1.0" 200 -
XX.XX.XX.XX - - [03/Apr/2019:11:42:43 -0400] "HEAD / HTTP/1.0" 200 -


If those are really the requests that Tomcat receives from the browser/client, 
then it is normal that you would see a blank page.  The HTTP response to a HTTP 
HEAD request does not contain any content, only HTTP headers.
That is also why the log messages do not contains the size of the response.

Usually, browser-originating HTTP requests are "GET", not "HEAD".

What client is sending these requests ?
(You can probably tell by the IP that you edited out).

Thanks,

Kyle Kim
JMD

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-----Original Message-----
From: André Warnier (tomcat) <a...@ice-sa.com>
Sent: Wednesday, April 3, 2019 11:37 AM
To: users@tomcat.apache.org
Subject: Re: Issues upgrading to tomcat 9.0.17

On 03.04.2019 17:30, Kim, Chang H (JMD) wrote:
Out of these log files, which is the log file that will contain the entries 
that I need to see?

Any one of them that contains something possibly related to your problem.
To gain time, I suggest that you do the following :
- stop tomcat
- start tomcat
- request the page you want via the browser
- stop tomcat
Then have a look at the tomcat log directory, and look at the files which have 
the latest modification date/time, scrolling back from the end.




localhost_access_log.2019-04-02.txt
localhost.2019-04-02.log
catalina.out
catalina.2019-04-02.log

Thanks,

Kyle Kim
JMD

Confidentiality Notice:  This e-mail, including all attachments, is intended 
only for the sole use of the intended recipient(s) and may contain privileged 
and/or confidential information.  If you are not the intended recipient(s) of 
this e-mail, any dissemination, distribution or copying of this e-mail, and any 
attachment(s) thereto, is strictly prohibited and may violate Federal Law.  If 
you have received this e-mail in error, please immediately notify the sender by 
e-mail or telephone and permanently delete all copies of this e-mail and any 
attachment(s).

-----Original Message-----
From: André Warnier (tomcat) <a...@ice-sa.com>
Sent: Wednesday, April 3, 2019 11:27 AM
To: users@tomcat.apache.org
Subject: Re: Issues upgrading to tomcat 9.0.17

On 03.04.2019 17:18, Kim, Chang H (JMD) wrote:
My OS is AIX 7.2.0.0.  I already have tomcat 8.0.35 working.  However, I am in the middle 
of upgrading it to tomcat 9.0.17.  I downloaded the latest tomcat, and started to get to 
the default webapp, and only thing displaying is "white screen".  Any help will 
be greatly appreciated.


Please have a look at the Tomcat logfiles, right after you get that blank page.
The reason is usually explicit there.

If you still do not understand after that, copy the relevant (?) message of the 
logfile here, to allow someone to have a look and help you.

Thanks,

Kyle Kim
JMD

Confidentiality Notice:  This e-mail, including all attachments, is intended 
only for the sole use of the intended recipient(s) and may contain privileged 
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this e-mail, any dissemination, distribution or copying of this e-mail, and any 
attachment(s) thereto, is strictly prohibited and may violate Federal Law.  If 
you have received this e-mail in error, please immediately notify the sender by 
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attachment(s).




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