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Re: FW: HELP HELP HELP - Invalid heap space using HTTPAPI

From: Scott Klement <sk@xxxxxxxxxxxxxxxx>
To: HTTPAPI and FTPAPI Projects <ftpapi@xxxxxxxxxxxxxxxxxxxxxx>
Subject: Re: FW: HELP HELP HELP - Invalid heap space using HTTPAPI
Date: Fri, 04 Feb 2011 13:22:24 -0600
hello Julio,

On January 21st, Charles Wilt suggested that you ask HTTPAPI to create a 
debug file.  Have you done that?  I can't find it on the mailing list.

Yesterday, Mike Krebs asked you how we can reproduce this error.  Have 
you answered this question?  I can't find any information on how I can 
reproduce the error on my machine.

Just to clarify:  We do not know the cause of this error.  I've never 
seen it occur, and it doesn't sound like anyone else on the list has had 
this error, either?   Since this isn't a well-known problem, simply 
knowing the error message isn't enough to tell us what's wrong.

To help you further, we need to be able to debug the code, line-by-line, 
to see where things are going awry.  We can't do that unless you can 
tell us how to reproduce it in our own test environments where we can 
use our debugging tools!

It MIGHT help if you provided an HTTPAPI debug file.  That has a great 
deal more information in it than you've posted so far.  But, with an 
error like this (related to heap memory) I'm not even sure that'll tell 
me anything I don't know.  Still, it couldn't hurt...

Anyway... to answer your questions:

1) Neither HTTPAPI nor EXPAT uses Java.  So while it certainly is 
possible to tweak the settings of the Java Virtual Machine (JVM) on the 
"AS400" [SIC], I don't see what that has to do with the situation??

2) EXPAT_H is a copy book that provides prototypes needed for calling 
the EXPAT *SRVPGM.  It's a copy book, not a module.  The module that 
calls EXPAT is called HTTPXMLR4.

3) Since I haven't any idea as to why you're getting that error, or how 
I could make that error happen (even if I wanted to), I don't know how 
to tell you to avoid it.  Troubleshooting is necessary.

-SK


On 2/4/2011 8:28 AM, Julio Cabrera wrote:
> Scott:
>
> There is a way to increment the heap memory using parameters in the
> EXPAT call or changing settings in the JVM in the AS400?
>
> Is EXPAT_H the module that call EXPAT in your library?
>
> There is any change that I can do to avoid this error?
>
> Julio
>
> ------------------------------------------------------------------------
>
> *From:*Julio Cabrera
> *Sent:* Thursday, February 03, 2011 10:46 AM
> *To:* Julio Cabrera; 'HTTPAPI and FTPAPI Projects'; 'Scott Klement'
> *Cc:* Jason Christman
> *Subject:* RE: HELP HELP HELP - Invalid heap space using HTTPAPI
>
> Charles / Scott:
>
> Because I do have problems sending you the job log I will send only the
> last part where the error shows.
>
> I have RPG programs to consume internal web services with LIBHTTP API.
> They work very well.
>
> The situation I have is that when the program calls to consume the
> services too many times, I got a heap memory error:
>
> MCH6906 Escape 40 02/03/11 07:47:35.051984 #hmfremi 00046C EXPAT LIBHTTP
> *STMT
>
> To module . . . . . . . . . : XMLPARSE
>
> To procedure . . . . . . . : hashTableDestroy
>
> Statement . . . . . . . . . : 2 *PRCLT
>
> Message . . . . : Invalid heap space condition detected. Internal dump
>
> identifier (ID) 01008405.
>
> C2M1212 Diagnostic 30 02/03/11 07:47:35.061248 QC2UTIL1 QSYS *STMT EXPAT
> LIBHTTP *STMT
>
>>From module . . . . . . . . :  QC2ALLOC
>
>>From procedure  . . . . . . : send_C2M1212__FPv
>
> Statement . . . . . . . . . : 8
>
> To module . . . . . . . . . : XMLPARSE
>
> To procedure . . . . . . . : hashTableDestroy
>
> 5722SS1 V5R4M0 060210 Display Job Log S1033693 02/03/11 08:02:02 Page 9999
>
> Job name . . . . . . . . . . : FULFILLMT User . . . . . . : QSYSOPR
> Number . . . . . . . . . . . : 433624
>
> Job description . . . . . . : QDFTJOBD Library . . . . . : QGPL
>
> MSGID TYPE SEV DATE TIME FROM PGM LIBRARY INST TO PGM LIBRARY INST
>
> Statement . . . . . . . . . : 2
>
> Message . . . . : The pointer parameter passed to free or realloc is not
>
> valid.
>
> This error only happens whe there are a great amount of records to process.
>
> Please I need help with this problem specially because I was the one
> that suggest to use HTTP API in our processes.
>
> I am attaching the complete joblog of the error is too big so I am
> sending more than one email…
>
> Thanks
>
> JULIO C. CABRERA
>
> Sr. Programmer Analyst, Information Technology
>
> Interval International
>
> 6262 Sunset Drive • Miami, Florida 33143
>
> 305.666.1861, ext. 7287 • direct 305.925.7287
>
> cell 305.928.7925• fax 305.668.3409
>
> Julio.Cabrera@xxxxxxxxxxxxxxxx
>
> IntervalWorld.com • ResortDeveloper.com
>
> -----Original Message-----
> From: ftpapi-bounces@xxxxxxxxxxxxxxxxxxxxxx
> [mailto:ftpapi-bounces@xxxxxxxxxxxxxxxxxxxxxx] On Behalf Of Charles Wilt
> Sent: Friday, January 21, 2011 3:02 PM
> To: HTTPAPI and FTPAPI Projects
> Subject: Re: Invalid heap space using HTTPAPI
>
> Julio,
>
> Turn debug logging on and post the resulting log..
>
> http_debug(*ON);
>
> Charles
>
> On Fri, Jan 21, 2011 at 2:42 PM, Julio Cabrera
>
> <Julio.Cabrera@xxxxxxxxxxxxxxxx> wrote:
>
>>
>
>>
>
>>  Gentlemen:
>
>>
>
>>
>
>>  I need help with this error.
>
>>
>
>>  It is happening with an RPG service using HTTPAPI, and normally
>
>>  happens when the web service is called multiple times.
>
>>
>
>>
>
>>  [cid:image002.jpg@01CBB979.7E576830]
>
>>
>
>>
>
>>  Any help will be very appreciated.
>
>>
>
>>
>
>>  Thanks,
>
>>
>
>>
>
>>
>
>>  JULIO C. CABRERA
>
>>
>
>>  Sr. Programmer Analyst, Information Technology
>
>>
>
>>  Interval International
>
>>
>
>>  6262 Sunset Drive o Miami, Florida 33143
>
>>
>
>>  305.666.1861, ext. 7287 o direct 305.925.7287
>
>>
>
>>  cell 305.928.7925 o fax 305.668.3409
>
>>
>
>>  [1]Julio.Cabrera@xxxxxxxxxxxxxxxx
>
>>
>
>>
>
>>  IntervalWorld.com o ResortDeveloper.com
>
>>
>
>>
>
>>
>
>>
>
>>  ______________________________________________________________________
>
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>
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>
>>  _______
>
>>
>
>>  References
>
>>
>
>>  1. mailto:Julio.Cabrera@xxxxxxxxxxxxxxxx
>
>>
>
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