[mapserver-users] Oddball mapserver/ArcSDE issue -- looking for advice.

[Russell McOrmond]

   We are running Mapserver 5.4.0 compiled against the ArcSDE SDK and doing 
requests against an SDE database.   This on RHEL5 and CentOS5 servers.

   We have an intermittent problem where the same Mapserver request will 
often work, but sometimes has a segmentation fault (possibly 1 out of 
every 5 times).

   The segmentation fault is caused by using a string which is actually 
null being returned from string functions, with the null then being used 
as if it were a string.
   See: http://trac.osgeo.org/mapserver/ticket/2988  "Check error returns 
from mapstring functions."


   I am wondering if anyone using ArcSDE for their database has seen this 
type of problem?  There is some speculation here that this is a number of 
licenses issue (IE: that for the requests that are failing that it is 
actually ArcSDE not returning data because it didn't get a license).  Does 
this seem plausible?

   It would be ideal if we could get an error message into the MS_ERRORFILE 
rather than core dumping, which might make it easier to diagnose this 
problem -- and to also keep the business folks from thinking it is a 
mapserver issue.

-- 
  Russell McOrmond, Internet Consultant: <http://www.flora.ca/>
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