Assuming this is UniData, (though you don't specify db, version or os), you may 
be encountering a signal issue that is fixed at 7.2.3. From the readme:

Issue 11687 - Problem Description

UniData -- When using the PORT.STATUS command with the PID option
to review the CALL.STACK or another udt process, the target udt
process may have abnormally terminated and produced a core file.
This occurred if the PORT.STATUS command was run at the moment
the target udt process was freeing shared memory. This problem
has been fixed.

Wally Terhune
U2 Support Architect
Rocket Software
4700 S. Syracuse Street, Suite 400 **Denver, CO 80237 **USA
Tel: +1.720.475.8055
Email: [email protected]
Web: www.rocketsoftware.com/u2


-----Original Message-----
From: [email protected] 
[mailto:[email protected]] On Behalf Of Dan McGrath
Sent: Monday, December 07, 2009 4:07 PM
To: U2 Users List
Subject: [U2] PORT.STATUS affecting program

Hi all, just wondering if anyone has encountered this before?

 

I was running some tests and discovered that doing a "PORT.STATUS PID
pid CALL.STACK" on a program that is waiting to open a named pipe with
OSOPEN caused it to bomb out.

 

I looked and it didn't have an ON ERROR statement, so I added it and
checked again. Every time I made the PORT.STATUS call, it caused it to
drop into the ON ERROR section.

 

My guess would be to perform the check on the program; it has to
interrupt it, hence causing it to bomb out of any blocking calls. Until
now, I had assumed the PORT.STATUS command would not affect a program,
but now it appears that it can, meaning it could potentially be
dangerous to use in a production environment.

 

Is this documented anywhere?

 

Regards,

Dan

 

 

 


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