Exchange Server Forums

MSExchange IS Application Event ID: 9646

Users viewing this topic: none

Logged in as: Guest

Printable Version

All Forums >> [Microsoft Exchange 2003] >> Information Stores >> MSExchange IS Application Event ID: 9646

Page: [1]

Message

<< Older Topic Newer Topic >>

Limited time MSExchange.org offer! -- 1.Sep.2008 1:00:00 PM

TechGenix and SolarWinds have partnered to provide free copies of SolarWinds Exchange Monitor to all visitors who join the MSExchange.org Forums. SolarWinds Exchange Monitor is a handy desktop dashboard that continuously monitors Microsoft Exchange to deliver real-time insight into Exchange services, mail queue sizes, and host server health. Learn more about Exchange Monitor and the free offer!

MSExchange IS Application Event ID: 9646 - 20.May2005 9:29:00 AM

griz

Posts: 17
Joined: 29.Apr.2005
From: Arlington Heights, IL
Status: offline

During the course of the day, several of the following events are recorded in the Application event log for various users at various times:

Source: MSExchangeIS
Type: Error
EventID: 9646

Mapi session "/o=<organization>/ou=<orgunit>/cn=Recipients/
cn=<username>" exceeded the maximum of 32 objects of type "session".

The documentation I've found for this error discusses other object types, but I haven't found anything referring to "session".

Any ideas would be helpful...thanks.

Post #: 1

Featured Links*

RE: MSExchange IS Application Event ID: 9646 - 20.May2005 9:33:00 AM

bej

Posts: 634
Joined: 3.May2005
From: Sweden
Status: offline

Taken from EventID.net:
"According to Microsoft Support, this is a new feature in Exchange 2003 to help prevent any one client from acting "abnormally" and adversely affecting the performance of the server. The recommended fix was to modify the registry to raise the threshold for each one of the object types mentioned in the error message. In my case, I had to quadruple the affected values to get this behavior to stop.
Create the following registry key: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MSExchangeIS\ParametersSystem\MaxObjsPerMapiSession. Then create a new DWORD value for each object name appearing in the error (for example, �objtMessageView�), and set the desired value. In my case, they recommended quadrupling the value mentioned in the error. You should not have to restart any services for this change to take affect. See Q830836 for more details."

(in reply to griz)

Post #: 2

RE: MSExchange IS Application Event ID: 9646 - 20.May2005 11:47:00 AM

griz

Posts: 17
Joined: 29.Apr.2005
From: Arlington Heights, IL
Status: offline

Thanks...I'll give it a try.

BTW - Do you know exactly what a "session" is, or why a particular user would have more than 32 of them?

(in reply to griz)

Post #: 3

RE: MSExchange IS Application Event ID: 9646 - 20.May2005 12:03:00 PM

ScottyFryer

Posts: 410
Joined: 19.May2004
From: Toronto
Status: offline

Sounds like Outlook is not closing the sessions after people are using email and exiting

Saw this issue once and learned that it was their blackberries causing the issue because the blackberry server wasn't updated

(in reply to griz)