issue with shrink database

When i try to shrink the database i am getting the following issue:

Cannot use the PAGE granularity hint on the table "dbo.salary" because locking at the specified granularity is inhibited.
DBCC SHRINKDATABASE: Heap page 1:422421 could not be moved.
The statement has been terminated.
DBCC execution completed. If DBCC printed error messages, contact your system administrator. (.Net SqlClient Data Provider)

Any help apreciatred...

[479 byte] By [kiranDBA] at [2008-1-2]
# 1
My issue is fixed now..Previously i didn't have cluster index on table and have non-clustered indexes. So i created the cluster indexes and tried shrink database, now it is not giving the error.
kiranDBA at 2007-9-13 > top of Msdn Tech,SQL Server,SQL Server Tools General...

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