In SQL Server 2005 SP2, the Maintenance Plan "Check Database Integrity" and "Execute T-SQL" Tasks can lose database context under certain circumstances. If configured to check integrity on multiple databases, the Check Integrity Task repeatedly checks the default database. If an Execute T-SQL Task contains multiple batches, separated by GO statements, and does not include USE statements in each batch, those statements that don't provide a database name will be executed against the default database. Incorrect operation can be verified by setting up a profiler trace and observing the database column.
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