NOTICE DATE:  August 22, 2008

NOTICE TYPE:  W-A082208-01   Operations

SHORT DESCRIPTION:  MOSTML and Outage Scheduler Performance Improvements

INTENDED AUDIENCE:  ERCOT Market Participants

DAYS AFFECTED:  September 2, 2008

LONG DESCRIPTION:  To address performance issues with ERCOT MOSTML and Outage Scheduler, ERCOT initiated measures to upgrade listener applications.  ERCOT will implement corrective measures in two phases.

Starting September 2, 2008 at 9AM, ERCOT will migrate the Outage Scheduler application.  A new URL will be deployed through Texas Market Link (TML) for the Outage Scheduler.  Market Participants accessing Outage Scheduler will need to access TML and select Outage Scheduler and save as new “favorite”.

For the second phase, ERCOT will migrate MOSTML and listener application to new hardware later in September.  ERCOT will send a market notice when this is to occur.  ERCOT will have the MOSTML setup in Market Operation Testing Environment (MOTE) August 28, 2008 for Market Participants to test with the new listener.  An ERCOT test digital certificate is required to access MOTE.

ERCOT will provide instructions in the next market notice for Market Participants using API connection to ERCOT MOSTML to setup new IP addresses (WAN and Internet) in advance of second phase migration.

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 e-mail at [log in to unmask].

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