SqlServer中如何解决session阻塞问题

/****Creating dummy table Employee ****/ 
CREATE TABLE Employee ( Empid int NOT NULL, Name nchar(10) NULL, City nchar(10) NULL ) ON [PRIMARY] GO 
/**** Insert dummy data in Employee table *****/ 
Insert into Employee Values(1245,'George','Jax'), (1045,'Peter','Anadale'), (1157,'John','Dallas'), (1175,'Pete','Topeka'), (875,'Petron','Vienna'), 
(2311,'Kohli','Mumbai'), (1547,'Peter','Kansas'), (3514,'Abian','KHI'), (4251,'Ghani','Alexandria'), (957,'Ahmed','Vienna'), (1084,'Bhanu','Manderin'), 
(2954,'Ganeshan','Mcclean')
/***** Insert query in new session ****/ 
BEGIN TRAN Insert into Employee Values(1245,'George','Jax') 
/**** Query to check currently running sessions ****/ 
SELECT DISTINCT name AS database_name, session_id, host_name, login_time, login_name, reads, writes FROM sys.dm_exec_sessions 
LEFT OUTER JOIN sys.dm_tran_locks ON sys.dm_exec_sessions.session_id = sys.dm_tran_locks.request_session_id 
INNER JOIN sys.databases ON sys.dm_tran_locks.resource_database_id = sys.databases.database_id 
WHERE resource_type <> 'DATABASE' --AND name ='specific db name' 
ORDER BY name
/**** update query in new session ****/ 
update Employee set name = 'SHERAZ' where empid = 1245 
/**** Query to check blocking queries with session id ****/ 
SELECT session_id, blocking_session_id, text FROM sys.dm_exec_requests CROSS APPLY sys.dm_exec_sql_text(sql_handle); 
/*** Command if you want to kill blocking session ****/ kill (54)