Re: Problem with long http request generation time - process restarting

On 17/12/2011 7:20 a.m., Randolf Richardson wrote:
>> Thanks for the responses :)
>>
>> However - I just read another thread somewhere that made me think of
>> looking in the Event log.
>>
>> It appears that the culprit is Oracle - there are errors
>> naming OraOCIEI11.dll as the "Faulting Module name".
> 	That's very interesting.  Windows Event Viewer is a good place to
> look (I keep forgetting about it as I'm used to /var/log/messages in
> Unix/Linux and similar environments).
Well.  It turns out that in this case the event log was actually a red 
herring. By creating another Apache instance (to avoid breaking the 
"production" server :)) and stripping out all references to Oracle, DBI, 
DBD etc from both httpd.conf and the Perl, I have determined that the 
problem has nothing to do with Oracle.

After doing that, I was getting exception code 0xC00000FD (Stack 
overflow) in Classify.dll (Params::Classify?) so I tried setting the 
ThreadStackSize to 2MB, and now I get 0xC0000005 and the module is 
unknown according to the Event log.

I think I'm going mad.

Is there a way to make Apache/mod_perl (on Windows 7) give me a stack 
dump when the child process exits?  Al I get in the log is the "Parent: 
child process exited ..." message, which is not very helpful.  I have 
downloaded the -symbols.zip files from ActiveState and installed them in 
the proper directories (alongside their .dlls), but then realised that 
I'm not getting the equivalent of a core dump file to analyze.  The 
Event log points to a directory containing only a text file (*.wer) 
which doesn't have anything useful AFAICS...

Andrew