The WebPage Cannot be found HTTP 400 error_log : mod_security: Access denied with code 405. Pattern match "!(GET|HEAD|POST)" at REQUEST_METHOD.

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Problem:  HTTP 400 Bad Request

The WebPage Cannot be found HTTP 400

error_log : mod_security: Access denied with code 405. Pattern match "!(GET|HEAD|POST)" at REQUEST_METHOD. [uri ""] [unique_id TgiU3YKCZIcAAAEVCkI]

Symptoms:

After upgrading from 12.0.6 to 12.1.3

 Problem may come from the SecFilterSelective setting

 You want to access to erptest-temp which has a '-' - the '-' may be not be allowed 

Security.conf file has the following configuration:

SecFilterSelective REQUEST_URI "!^/OA_HTML/oowa/aw92/" chain
SecFilterSelective ARGS_NAMES "!^([-_|#!=A-Za-z0-9/ :,.$()]){0,255}([-_|#!=A-Za-z0-9/ :,.$()]){0,255}$"

SecFilterCheckUnicodeEncoding Off

After making a comparison between security.conf for the upgraded instance 12.1.3 and with the old instance 12.0.6, the below line differes :

12.1.3
SecFilterSelective ARGS_NAMES "!^([-_|#!=A-Za-z0-9/ :,.$()]){0,255}([-_|#!=A-Za-z0-9/ :,.$()]){0,255}$"

12.0.6
SecFilterSelective ARGS_NAMES "!^([-_@|#!=A-Za-z0-9/ \:\.\$]){0,255}$"

Log files:

Filename =error_log
See the following error:
[Mon Jun 27 12:12:12 2011] [error] [client 10.1.25.56] mod_security: Access denied with code 400. Error normalizing REQUEST_URI: Invalid URL encoding detected: invalid characters used [hostname "erptest-temp.auh.police"] [uri "/OA_HTML/jsp/fnd/fnderror.jsp?text=DE%20J*E%20*-HJD%20'DF8'E%20('DC'ED%20%DI%207H1%20'D5J'F).%201,'!%20'D'*5'D%20(E3&HD%20'DF8'E%20'D.'5%20(C"] [unique_id Tgg7XIKCZIcAAAETCDU]
[Mon Jun 27 12:25:02 2011] [error] [client 10.1.25.56] mod_security: Access denied with code 400. Error normalizing REQUEST_URI: Invalid URL encoding detected: invalid characters used [hostname "erptest-temp.auh.police"] [uri "/OA_HTML/jsp/fnd/fnderror.jsp?text=DE%20J*E%20*-HJD%20'DF8'E%20('DC'ED%20%DI%207H1%20'D5J'F).%201,'!%20'D'*5'D%20(E3&HD%20'DF8'E%20'D.'5%20(C"] [unique_id Tgg@XoKCZIcAAAEXCm4]
[Mon Jun 27 12:36:20 2011] [error] [client 10.1.25.56] mod_security: Access denied with code 400. Error normalizing REQUEST_URI: Invalid URL encoding detected: invalid characters used [hostname "erptest-temp.auh.police"] [uri "/OA_HTML/jsp/fnd/fnderror.jsp?text=DE%20J*E%20*-HJD%20'DF8'E%20('DC'ED%20%DI%207H1%20'D5J'F).%201,'!%20'D'*5'D%20(E3&HD%20'DF8'E%20'D.'5%20(C"] [unique_id TghBBIKCZIcAAAEXCnU]
[Mon Jun 27 12:36:30 2011] [error] [client 10.1.25.56] mod_security: Access denied with code 400. Error normalizing REQUEST_URI: Invalid URL encoding detected: invalid characters used [hostname "erptest-temp.auh.police"] [uri "/OA_HTML/jsp/fnd/fnderror.jsp?text=DE%20J*E%20*-HJD%20'DF8'E%20('DC'ED%20%DI%207H1%20'D5J'F).%201,'!%20'D'*5'D%20(E3&HD%20'DF8'E%20'D.'5%20(C"] [unique_id TghBDoKCZIcAAAETCEM]
[Mon Jun 27 14:29:35 2011] [error] [client 130.130.100.87] mod_security: Access denied with code 405. Pattern match "!(GET|HEAD|POST)" at REQUEST_METHOD. [uri ""] [unique_id Tghbj4KCZIcAAAEWCkY]
[Mon Jun 27 18:34:05 2011] [error] [client 130.130.100.64] mod_security: Access denied with code 405. Pattern match "!(GET|HEAD|POST)" at REQUEST_METHOD. [uri ""] [unique_id TgiU3YKCZIcAAAEVCkI]

Solution:

1.

Clearing middle tier cache:

    (R) Functional Administrator responsibility
    (N) Core Services > Caching Framework > Global Configuration > Clear cache

      Or manually delete all _pages caches and then regenerate all jsp as

rm -Rf $OA_HTML/_pages/*
rm -Rf $COMMON_TOP/_pages/*
rm -Rf $IAS_ORACLE_HOME/Apache/modplsql/cache/*

Unix: # $FND_TOP/patch/115/bin/perl ojspCompile.pl --compile --flush -p 2
Windows: C:> <FND_TOP>\patch\115\bin\perl -x ojspCompile.pl --compile --flush 

FYI : Clearing the _pages in R12 creates a blank login page issue, as in Release 12 the jsp files do not get compiled automatically.
If you made it be accident, use the ojspcompile.pl perl script to perform a manual pre-compilation of the JSP pages. The following command will compile all the JSP pages and build up the JSP cache again.
Unix: # $FND_TOP/patch/115/bin/perl ojspCompile.pl --compile --flush -p 2
Windows: C:> <FND_TOP>\patch\115\bin\perl -x ojspCompile.pl --compile --flush 

This utility is also used by the AD utilities to perform this action, for example after patches are applied which replaced 1 or more JSP pages. Since this a manual action which also requires understanding of parameters to be passed to have the right (set of) JSP compiled this option may be error-prone.

make a backup of the securitiy.conf file 

change 
SecFilterCheckUnicodeEncoding Off 
to
SecFilterCheckUnicodeEncoding On

bounce the middle tier and try.

If not works, then try:

2.

Clearing middle tier cache:

make a backup of the securitiy.conf file 

change 

SecFilterSelective ARGS_NAMES "!^([-_|#!=A-Za-z0-9/ :,.$()]){0,255}([-_|#!=A-Za-z0-9/:,.$()]){0,255}$"

to

SecFilterSelective ARGS_NAMES "!^([-_@|#!=A-Za-z0-9/ \:\.\$]){0,255}$"

bounce the middle tier and try.

If not works, then try:

3. try the below link:

http://<server>.<domain>:<PORT>/OA_HTML/OA.jsp?OAFunc=OAHOMEPAGE

if it gave you that the system still under maintenance mode, you should disable the maintenance mode using adadmin and try again

References:

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