NOTICE DATE: March 13, 2012 NOTICE TYPE: M-B030912-02 Outage - Retail/Wholesale SHORT DESCRIPTION: RESCHEDULED - Planned system maintenance with impacted services INTENDED AUDIENCE: ERCOT Market Participants DAY AFFECTED: March 15, 2012, 16:30 - 21:30 CDT LONG DESCRIPTION: ERCOT will be performing planned system maintenance of the Market Information System (MIS), Current Day Reports (CDR), and Market Information Repository (MIR) databases and applications on March 15, 2012, within a maintenance window of 16:30 - 21:30 CDT. This maintenance was originally planned to occur on March 14, 2012. The date of the maintenance has been pushed back one day, but the time window remains the same. During this outage window, Market Participants may experience intermittent issues for approximately two hours with the following services: * Market submissions and requests via WebServices, Market Manager and Outage Scheduler * Report publishing to the ERCOT MIS * Downloading of extracts and reports from MIS and WebServices. During the outage, please use the following URLs to directly access the Market Manager and Outage Scheduler: * https://mis.ercot.com/mmsui/mmsui/displayTradesLanding.action * https://mis.ercot.com/osrui/osrui/Summary.action. Note that the two hour outage is scheduled to begin at approximately 16:30 CDT; however, this start time may be delayed depending on the current system conditions. ADDITIONAL INFORMATION: Reports will be rerun and reposted as applicable. The MIS Dashboards and ERCOT.com price displays will not be populated with data during this timeframe. CONTACT: If you have any questions, please contact your ERCOT Account Manager. You may also call the general ERCOT Client Services phone number at (512) 248-3900 or contact ERCOT Client Services via email at [log in to unmask]<mailto:[log in to unmask]>. If you are receiving email from an ERCOT distribution list that you no longer wish to receive, please follow this link in order to unsubscribe from this list: http://lists.ercot.com. dh