[D2l-alert] [Critical] - Performance fixes for versions 9.4.1 and 10.x

[Klein, Karen]

I guess I don't mind if downtime is minimal, the installation can be scheduled to start at 7:00, and we have enough time to give our users advance notice.

- Karen

From: d2l-alert-bounces at lists.onenet.net [mailto:d2l-alert-bounces at lists.onenet.net] On Behalf Of Meyer, Chris J.
Sent: Tuesday, January 22, 2013 1:31 PM
To: d2l-alert
Cc: customerservice at Desire2Learn.com
Subject: Re: [D2l-alert] [Critical] - Performance fixes for versions 9.4.1 and 10.x

I would like to schedule this service pack installation to fix another incident and to prepare to fix this security hole when possible. The other incident isn't critical, but it is very frustrating and will lead to trouble calls. It is incident #00216286 and fixes bug #97705 which prevents users from using the Messaging Alerts and the Update Alerts in the mini-bar even when a quiz has expired. Do you have any suggestions or comments?

I still haven't heard back from D2L about how much downtime we should expect to upgrade from SP5 to SP7 and then apply this database fix (or upgrade to SP8 when it comes out).

Chris

Chris Meyer | Dean, Learning Resources Center | Rose State College | www.rose.edu<http://www.rose.edu>
6420 S.E. 15th St. | Midwest City, OK 73110-2799 | v: 405.733.7913 | f: 405.733.7567 | e: cmeyer at rose.edu<mailto:cmeyer at rose.edu>

From: D2L Customer Service [mailto:customerservice at Desire2Learn.com]<mailto:[mailto:customerservice at Desire2Learn.com]>
Sent: Monday, January 21, 2013 10:09 AM
Subject: [Critical] - Performance fixes for versions 9.4.1 and 10.x

To Desire2Learn Self-hosted clients

We would like to inform you of a recent issue we have discovered, covering the 9.4.1, 10.X series of Desire2Learn, which may result in diminished performance for your students, faculty and users.  The symptoms are as follows:

*         A gradual building of slowness in the application

*         Timeout errors when accessing database items like quizzes, grades etc...

*         The system will eventually become unusable.
The issue is due to contention on internal component of SQL server (tempdb), and all indication is that the cause of delays in the database are related to the execution of too many queries running. This will cause the database to become unable to process transactions, making the application perform poorly.

Desire2Learn recommends these updates, they have been tested and applied to a large percentage of clients in our datacentres with positive results. Please note the version compatibility below if you are not a compatible version it will require deployment of the necessary Service Packs. For additional details please refer to the Database Performance Monitoring guide on how to monitor and determine if you your environment is experiencing this issue.

Version Compatibility


*         9.4.1 SP12

*         10.0 SP 7

*         10.1 SP2
Please note, an incident will be created in the support portal on your behalf to manage the deployment of theses fixes. We will require your approval and scheduling details via the incident provided. Please also note these fixes will also be included in the January Service Pack Collection but are being made available early to assist environments encountering slowness.

If you have questions please reply to this message.

Desire2Learn Customer Service & Support
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