NOTICE DATE: January 31, 2012

NOTICE TYPE: M-A013112-02 UPDATE: Extracts Wholesale/Retail

SHORT DESCRIPTION: Intermittent Report Retrieval Issues

INTENDED AUDIENCE: All Market Participants

DAYS AFFECTED: January 31, 2012 from 06:00 to 08:23

LONG DESCRIPTION: ERCOT experienced report retrieval issues for the Market Information System (MIS), ERCOT Web Services (EWS) ‘GetReports’, and ERCOT.com. These issues were encountered for the following timeframes: 05:55 – 08:30, 09:28 – 09:38 and 11:30 – 11:48.

During these timeframes, data retrieval from the Market Information System and ERCOT Website was intermittently interrupted. Also during these times, the External Web Services experienced a performance degradation for the following ‘Get’/Retreival services:

- AggregatedASOfferCurves

- ASServicePlan

- BindingConstraints

- CompetitiveConstraints

- DynamicRatings

- LMPs

- LoadForecasts

- LoadRatioShares

- MarketTotals

- SCEDViolatedConstraints

- SPPs

- STWPF

- SystemLoad

- TotalASOffers

- TotalEnergys

- TotalLoad

- WeatherInfos

- WGRPP

All retrieval functionality has been restored

ADDITIONAL INFORMATION: ERCOT is currently monitoring performance of the database and all applications. The root cause of the retrieval issue is still being investigated.

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].

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.

JR/DP

From: ERCOT Client Services
Sent: Tuesday, January 31, 2012 9:42 AM
To: [log in to unmask]; [log in to unmask]
Cc: [log in to unmask]; [log in to unmask]; [log in to unmask]; 1 ERCOT Client Service Reps
Subject: M-A013112-01 MIS Reports and Extracts

NOTICE DATE: January 31, 2012

NOTICE TYPE: M-A013112-01 MIS Reports and Extracts

SHORT DESCRIPTION: The Reports & Extracts page on the Market Information System (MIS) is currently displaying no results.

INTENDED AUDIENCE: All Market Participants

DAYS AFFECTED: January 31, 2012 from approximately 06:00 to present

LONG DESCRIPTION: The Reports & Extracts page on the Market Information System (MIS) is currently displaying no results. The issue began at approximately 06:00 on Tuesday, January 31, 2012.

ADDITIONAL INFORMATION: ERCOT is currently investigating the cause of the issue.

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.

JR/DP