[bdbxml] Re: [mod_python] Segmentation fault with mod_python and DBXML

Hello Conrad

In my case the culprit was Berkley DB. I checked the Libraries for 
"httpd" , "python" and "dbxml".
I replaced the "libdb-4.2.so"  at "/lib/tls/i686/libdb-4.2.so"  by 
"libdb-4.3.so" installed by DBXML-2.1.8 in "/usr/local/lib".
But i think this is not a good solution.
I need a proper installation and configuration process.
I am using CentOS-4.x. For my requirement i use following installation 
process after OS installation:

1.    Install DBXML-2.1.8 with default installation.
2.    Copy the Libraries "/usr/local/lib/*" to /usr/lib/
3.    Install pybsddb
4.    Install DBXML module for Python.

As Berkeley DB get installed with Python and installing DBXML result in 
some Version conflict. What should i do to avoid this conflict.
Should i install individual packages from dbxml-2.1.8 (except DB) to 
avoid conflict.
 
Manjeet Ch

Conrad Steenberg wrote:

>Hi Manjeet
>
>You must use exactly the same libraries in Python and Apache for your
>application to work. Apart from expat that was already pointed out, a
>common culprit is also Berkeley DB, because it's used very widely.
>
>Do an 'ldd /usr/sbin/httpd', or whatever your Apache executable is, to
>find out what libraries it's linked to. Then do the same for your Python
>binary, and maybe the dbxml Python module as well.
>
>Cheers
>
>Conrad
>
>On Tue, 2005-08-16 at 13:14 +0200, Julien wrote:
>  
>
>>Maybe a library has problem with threads ... 
>>try running apache in prefork mode (in place of threads) to see if it
>>resolve the problem ...
>>
>>On Tue, 2005-08-16 at 15:54 +0530, Manjeet Chaudhary wrote:
>>    
>>
>>>Hello All,
>>>
>>>Sorry if the mail got duplicated.
>>>I am developing a web based application; based on Apache, mod_python, 
>>>dbxml and python programming; When i try to import dbxml module( to 
>>>perform various dbxml operations ) from mod-python handler and give a 
>>>url request to mod-python handler i am getting an error of Segmentation 
>>>Fault in apache error log .
>>>I am using following versions of software
>>>1) dbxml -  2.1.8
>>>2) python - 2.3.4
>>>3) mod-python - 1.3.4
>>>4) apache 2.0.52
>>>5) Kernel version-2.6.9-5.0.5-EL
>>>
>>>I think the error occurs at the time when i am creating the XmlManager 
>>>instance in dbxml module.
>>>I am using Publisher Handler of mod-python.
>>>
>>>Apache error log (/var/log/httpd/error_log)
>>>
>>>[Tue Aug 16 10:17:43 2005] [notice] mod_python: (Re)importing module 
>>>'mod_python.publisher'
>>>[Tue Aug 16 10:17:43 2005] [notice] mod_python: (Re)importing module 'x' 
>>>with path set to '['/var/www/cgi-bin/sw']'
>>>[Tue Aug 16 10:17:44 2005] [notice] child pid 3238 exit signal 
>>>Segmentation fault (11)
>>>
>>>Please let me know is there any solution to this problem .
>>>It is very urgent.
>>>Thanks in advance.
>>>Regards,
>>>
>>>Manjeet Chaudhary
>>>_______________________________________________
>>>Mod_python mailing list
>>>[email protected]
>>>http://mailman.modpython.org/mailman/listinfo/mod_python
>>>
>>>      
>>>


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