删除数据库时提示数据库正在使用，无法删除问题
1> select db_name()
2> go

 ------------------------------------------------------------
 master

(1 row affected)
1> drop database gcard
2> go
Msg 3702, Level 16, State 4:
Server 'SYBASE', Line 1:
Cannot drop the database 'gcard' because it is currently in use.
1>
1> alter database gcard set single_user with rollback immediate
2> go
Msg 156, Level 15, State 2:
Server 'SYBASE', Line 1:
Incorrect syntax near the keyword 'with'.
1>
解决办法：
1、使用sp_who查看与所要删除数据库的相关进程信息
1> sp_who
2> go
 fid    spid     status               loginame         origname         hostname         blk_spid         dbname       tempdbname           cmd                                block_xloid            threadpool
 ------ -------- -------------------- ---------------- ---------------- ---------------- ---------------- ------------ -------------------- ---------------------------------- ---------------------- --------------------------------
 
   0      11     background           NULL             NULL             NULL                    0         gcard        tempdb               REP AGENT                                    0            NULL  

(12 rows affected)
(return status = 0)
1>
2、kill掉相关进程
1> kill 11 with force
2> go
1> sp_who
2> go
3、删库
1> drop database gcard
2> go
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