SharePoint: Unable to start “Excel Calculation Services”

ISSUE:
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–When trying to start “Excel Calculation Services” under central administration–Services on Server, getting error message

“Unknown Error”

Or

“Failed to resolve the site ID for ‘Office Server Web Services’.”

–When we check the Event Viewer–Application Logs, getting following event ID 7034
Log Name:      Application
Source:        Windows SharePoint Services 3
Date:          7/30/2009 9:04:35 AM
Event ID:      7034
Task Category: Topology
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      <SharePoint Server Name>
Description:
An attempt to start/stop instance  of service Excel Calculation Services on server <SharePoint Server Name> did not succeed.  Re-run the action via UI or command line on the specified server. Additional information is below.

Cannot open database “SharedServices1_DB” requested by the login. The login failed.
Login failed for user ‘Domain Name\<SharePoint Server Name>$’.
Event Xml:
<Event xmlns=”http://schemas.microsoft.com/win/2004/08/events/event“>
<System>
<Provider Name=”Windows SharePoint Services 3″ />
<EventID Qualifiers=”0″>7034</EventID>
<Level>2</Level>
<Task>807</Task>
<Keywords>0×80000000000000</Keywords>
<TimeCreated SystemTime=”2009-07-30T16:04:35.000Z” />
<EventRecordID>15441</EventRecordID>
<Channel>Application</Channel>
<Computer><SharePoint Server Name></Computer>
<Security />
</System>
<EventData>
<Data>
</Data>
<Data>Excel Calculation Services</Data>
<Data><SharePoint Server Name></Data>
<Data>Cannot open database “SharedServices1_DB” requested by the login. The login failed.
Login failed for user ‘Domain Name\<SharePoint Server Name>$’.</Data>
</EventData>
</Event>

Resolution:
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1. Find the command prompt under the start menu, right click on it and choose ‘Run as Administrator’.

2. Change directories to C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\12\bin.

3. Run the following command:

STSADM.EXE -o provisionservice -action start -servicetype “Microsoft.Office.Excel.Server.ExcelServerSharedWebService, Microsoft.Office.Excel.Server, Version=12.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c”