OutOfMemoryException...Unable to serialize the session..?

[Dave]

We just started getting this error message in our application today (stack
trace below). From the OutOfMemoryException, I'm guessing it could be a
memory leak. I'm making sure I'm closing all my connections in the finally
block but I'm not sure what I should be doing.

As far as the "Unable to serialize the session state" error, this app has
been running for days and this is the first I've seen this one as well.

Any thoughts would be greatly appreciated...

[OutOfMemoryException: Exception of type System.OutOfMemoryException was
thrown.]

[HttpException (0x80004005): Unable to serialize the session state. Please
note that non-serializable objects or MarshalByRef objects are not permitted
when session state mode is 'StateServer' or 'SQLServer'.]
System.Web.Util.AltSerialization.WriteValueToStrea m(Object value,
BinaryWriter writer) +1710
System.Web.SessionState.SessionDictionary.Serializ e(BinaryWriter writer)
+148
System.Web.SessionState.StateClientManager.Seriali ze(SessionStateItem
item, Stream stream) +146

System.Web.SessionState.SqlStateClientManager.Syst em.Web.SessionState.IStateClientManager.Set(String id, SessionStateItem item, Boolean inStorage) +126
System.Web.SessionState.SessionStateModule.OnRelea seState(Object source,
EventArgs eventArgs) +465

System.Web.SyncEventExecutionStep.System.Web.HttpA pplication+IExecutionStep.Execute() +60
System.Web.HttpApplication.ExecuteStep(IExecutionS tep step, Boolean&
completedSynchronously) +87

[Bruce Barker]

the outofmemory error is misleading. the real problem is trying to store an
object in a sqlserver session manager that cannot be serialized. not all
..net object can be serialized, check that what you store in session can.

-- bruce (sqlwork.com)
"Dave" <Da**@discussions.microsoft.com> wrote in message
news:EE**********************************@microsof t.com...

We just started getting this error message in our application today (stack
trace below). From the OutOfMemoryException, I'm guessing it could be a
memory leak. I'm making sure I'm closing all my connections in the
finally
block but I'm not sure what I should be doing.

As far as the "Unable to serialize the session state" error, this app has
been running for days and this is the first I've seen this one as well.

Any thoughts would be greatly appreciated...

[OutOfMemoryException: Exception of type System.OutOfMemoryException was
thrown.]

[HttpException (0x80004005): Unable to serialize the session state. Please
note that non-serializable objects or MarshalByRef objects are not
permitted
when session state mode is 'StateServer' or 'SQLServer'.]
System.Web.Util.AltSerialization.WriteValueToStrea m(Object value,
BinaryWriter writer) +1710
System.Web.SessionState.SessionDictionary.Serializ e(BinaryWriter writer)
+148
System.Web.SessionState.StateClientManager.Seriali ze(SessionStateItem
item, Stream stream) +146

System.Web.SessionState.SqlStateClientManager.Syst em.Web.SessionState.IStateClientManager.Set(String
id, SessionStateItem item, Boolean inStorage) +126
System.Web.SessionState.SessionStateModule.OnRelea seState(Object source,
EventArgs eventArgs) +465

System.Web.SyncEventExecutionStep.System.Web.HttpA pplication+IExecutionStep.Execute()
+60
System.Web.HttpApplication.ExecuteStep(IExecutionS tep step, Boolean&
completedSynchronously) +87

[rich leung]

Hello,
I use an ASP.Net app on WIndows 2000 with SQL Server 2000 to store
persistant sessions.
I have the same problem but it does not always happen. I can be doing a
particular task one day without errors but on another day I will get the
error (Doing the exact same thing).
The only thing I've noticed is the Total Server Memory under Performance
Monitor rises and rises over a span of a couple of days. Once it exceeds 40
out of 100 it is likely I will come across this problem.

Please can anyone help?
Rich.