Xrunhprof - no stack trace for int[] object

Question

Before I assume this is something peculiar to my own situation, I want to
ask if anyone has seen anything like this before. Our web application
(running on WLS6.1 SP2) has a memory problem. Below is the output from
running the server with Xrunhprof flag - I did it two times...
first time... (ran the server for longer)
SITES BEGIN (ordered by live bytes) Tue Jun 18 12:42:21 2002
percent live alloc'ed stack class
rank self accum bytes objs bytes objs trace name
1 21.72% 21.72% 6140976 186 6140976 186 19514 [B
2 14.37% 36.09% 4063232 2 4063232 2 0 [I
second time ....
SITES BEGIN (ordered by live bytes) Tue Jun 18 14:20:42 2002
percent live alloc'ed stack class
rank self accum bytes objs bytes objs trace name
1 14.60% 14.60% 2773344 84 2773344 84 17463 [B
2 13.46% 28.06% 2555904 2 2555904 2 0 [I
I know what the byte array objects are - they are related to OCI / prepared
statements.
The second line is what has me more worried - as there is no stack trace
number, and that it grows while the app is running for longer.
If any of you has ever encountered something like this, I'd appreciate your
suggestions.
Thanks,
-e.

Answer 1

This is a bug in the .NET Coherence libraries (Bug      9137660 )
Example program demo-ing the problem is below:
Bug      9137660
Hi, I've created a small example to demonstate the problem with the stack trace. The code is below, the output is:
78 [10] ERROR LogExample.Program (null) - Tangosol.Net.RequestTimeoutException
109 [10] ERROR LogExample.Program (null) - LogExample.MyException: Exception of
type 'LogExample.MyException' was thrown.
at LogExample.Program.CreateNormalException() in C:\dev\code\LogExample\LogEx
ample\LogExample\Program.cs:line 59
at LogExample.Program.Main(String[] args) in C:\dev\code\LogExample\LogExampl
e\LogExample\Program.cs:line 31
109 [10] ERROR LogExample.Program (null) - LogExample.MySpecialTimeoutException
The first and last cases involve Coherence exceptions, yet the second merely subclasses exception. Is this behaviour by design?
using System;
using Tangosol.Net;
using log4net;
using log4net.Config;
namespace LogExample
class Program
private static readonly ILog _logger = LogManager.GetLogger(typeof(Program));
static void Main(string[] args)
BasicConfigurator.Configure();
//_logger.Info("log4net message from Main()");
//CacheFactory.Log("log message to coherence from Main()", CacheFactory.LogLevel.Always);
//Console.WriteLine("log message to console");
Exception rto = null;
Exception ex = null;
try
CreateRequestTimeout();
catch (Exception e)
rto = e;
_logger.Error(e);
try
CreateNormalException();
catch (MyException e)
ex = e;
_logger.Error(e);
try
CreateMySpecialTimeoutException();
catch (MySpecialTimeoutException e)
ex = e;
_logger.Error(e);
Console.ReadLine();
public static void CreateRequestTimeout()
throw new Tangosol.Net.RequestTimeoutException();
public static void CreateNormalException()
throw new MyException();
public static void CreateMySpecialTimeoutException()
throw new MySpecialTimeoutException();
class MyException : Exception
class MySpecialTimeoutException : Tangosol.Net.RequestTimeoutException
}