BCM has just failed to start in outlook 2007 with a long error message a
summary of it I have included below:

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This action cannot be completed because Business Contact Manager cannot
access the database.

A system assertion check has failed. Check the SQL Server error log for
details. . . . . consider running DBCC CHECKDB . . . .

an error occured at log record ID (433:9983:68)
Login failed for user 'Hobs\aboc'
Location: page.cpp:4604
Expression: roLength > = offsett + deleteLength
SPID: 51
ProcessID: 108

Do you want to change the database config?

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If someone could please help me understand what has happened and how to run
DBCC / or repair the database I would be grateful. I don't want to have to
try a restore an older backup and lose my recent activities.

Many thanks, Adam