Newbie Automatic restore issues

Question

Hi:
I have two issues with a program I am working on to do an automated restore, The restore takes a backup from production, and replaces the database entirely every day so we have offloaded current information: I avoid logical names because we don't want a
database named production:
FIRST ISSUE:
I would like to be able to drop the database. When I drop it interactively, I always click the box close existing connections: The problem is what to do with an interactive connection: Is there any way with an automated restore replace to intrinsically drop
the database? Although it's not something you normally want to do, it is something in this case that I HAVE to do to ensure the restore works and the with moves move the correctly named files.
SECOND ISSUE
When I run the following statement:
USE [coll18_FinAidNoHR]
DBCC SHRINKFILE (N'coll18_production_log' , 0, TRUNCATEONLY)
GO
I get the following error:
Cannot shrink log file 2 (coll18_production_log) because the logical log file located at the end of the file is in use.
(1 row(s) affected)
DBCC execution completed. If DBCC printed error messages, contact your system administrator.
Is there any way  to work around this without programming?

Answer 1

As for question 2-thanks for all the info on DBCC SHRINKFILE I think the best decision is to do it as needed.The
Restore is a knottier problem. I can't to a restore replace because I want to change the file names. I can't have the logical names.
I run a prestep before my restore that does this common stuff:
if exists (select * from sys.sysdatabases where name = 'FinAidNoHR')
EXEC msdb.dbo.sp_delete_database_backuphistory @database_name = N'FinAidNoHR'
if exists (select * from sys.sysdatabases where name = 'FinAidNoHR')
ALTER DATABASE [FinAidNoHR] SET  SINGLE_USER WITH ROLLBACK IMMEDIATE
if exists (select * from sys.sysdatabases where name = 'FinAidNoHR')
    drop DATABASE  [FinAidNoHR];
The restore step fails with this error:
Executed as user: CAMPUS\UCCTD10_SQL. Exclusive access could not be obtained because the database is in use. [SQLSTATE 42000] (Error 3101) 
When I run an SP_WHO it DOES show the database open in a sleeping state on a remote machine that did not shut down the instance, but this DROP should have had the effect of an interactive drop with close existing connections checked.
When I did other tests like selecting top 1000 rows from another test database,SP_WHO shows it open in the same way but the DROP works fine.
Before I tear out what little hair I have left, can anybody tell me why it would  not drop the connection?
(It was my boss's PC)