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

Hello Conrad

I tried to install individual package from dbxml-2.1.8.
The package included in dbxml-2.1.8 are (BerkeleyDB , Xerces, Pathan, 
XQuery, DBXML)

1.   Extracted dbxml-2.1.8
2.   Installed Xerces (skipped BerkeleyDB installation as it is 
installed in /usr/lib)
3.   Installed Pathan and Xquery
4.   But when i try to install dbxml with ( --with-berkeleydb=/usr/lib/ 
) it gives following error.
-----------------------------------
checking if --with-berkeleydb=DIR option specified... /usr/lib/
configure: error: /usr/lib not a valid Berkeley DB tree.  Note that 
Berkeley DB must be configured and built with '--enable-cxx'.
-----------------------------------

What is the problem.

Should i use the BerkeleyDB source tree from "dbxml-2.1.8" source  tree. 
Will it work for my case; if yes will there be any version conflict with 
existing libdb-4.2 installed.
 
Manjeet Ch


Conrad Steenberg wrote:

>On Mon, 2005-08-22 at 15:29 +0530, Manjeet Chaudhary wrote:
>  
>
>>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.
>>    
>>
>
>Yes, you're right :-) Rather keep the system version of libdb-4.2.so and
>recompile dbxml to use that version - just copying a newer library over
>an older one is likely to give you a lot of trouble.
>
>  
>
>>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.
>>    
>>
>
>I Would say, rather do
>1. Install DBXML from source so that it gets linked to the system
>version of libdb.
>2. Ditto pybsddb
>3. Ditto DBXML module for Python.
>
>Cheers
>
>Conrad
>
>  
>
>>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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