查看在查询执行期间获取的锁 (SQL Server)

Question

查询执行计划默认不显示锁定详细信息，是否可以查看在查询执行期间获取的锁定以及类型？

Answer 1

是否可以查看在执行查询期间获取的锁以及类型？

是的，为了确定锁，

1. 您可以beta_lockinfo通过 Erland Sommarskog 使用

   beta_lockinfo是一个存储过程，它提供有关进程和它们持有的锁以及它们的活动事务的信息。beta_lockinfo旨在收集尽可能多的有关阻塞情况的信息，以便您可以立即找到罪魁祸首并在情况紧急时终止阻塞进程。然后，您可以坐下来分析输出，beta_lockinfo以了解阻塞情况是如何发生的，并找出要采取哪些措施来防止这种情况再次发生。的输出beta_lockinfo显示了所有活动进程以及带有锁的被动进程、它们锁定的对象、它们最后提交的命令以及它们正在执行的语句。您还可以获得当前语句的查询计划。通常，您运行beta_lockinfo直接查看输出，但也有将数据保存到表的存档模式。如果您希望某人从beta_lockinfo您无法访问自己的站点向您发送输出，这并不是最不有用的。

2. 另一种方法是sp_whoIsActive由 Adam Machanic使用@get_locks = 1

   EXEC sp_WhoIsActive 
   @filter = '', 
   @filter_type = 'session', 
   @not_filter = '', 
   @not_filter_type = 'session', 
   @show_own_spid = 0, 
   @show_system_spids = 0, 
   @show_sleeping_spids = 1, 
   @get_full_inner_text = 0, 
   @get_plans = 1, 
   @get_outer_command = 1, 
   @get_transaction_info = 0, 
   @get_task_info = 1, 
   @get_locks = 1,   ----------> 1 = ON (get lock info); 0 = OFF
   @get_avg_time = 0, 
   @get_additional_info = 0, 
   @find_block_leaders = 0, 
   @delta_interval = 0, 
   @output_column_list = '[dd%][session_id][sql_text][sql_command][login_name][wait_info][tasks][tran_log%][cpu%][temp%][block%][reads%][writes%][context%][physical%][query_plan][locks][%]', 
   @sort_order = '[start_time] ASC', 
   @format_output = 1, 
   @destination_table = '', 
   @return_schema = 0, 
   @schema = NULL, 
   @help = 0
   

Answer 2

以下是我如何按进程/表/锁类型查看锁：

SELECT 
    HostName,
    "OS UserName",
    Login, 
    spid, 
    "Database", 
    TableID,
    "Table Name_________", 
    IndID, 
--  [Index Name],
    "Lock Type", 
    "Lock Mode", 
    Status, 
--  Resource,
    Count(*) AS "Lock Count"
FROM (
    SELECT
        Convert(VarChar(30), RTRIM(P.HostName)) AS HostName,
        Convert(VarChar(30), RTRIM(P.nt_UserName)) AS "OS UserName",
        Convert(VarChar(30), Suser_SName(p.sid)) AS Login, 
        Convert(SmallInt, req_spid) AS spid,
        Convert(VarChar(30), DB_Name(rsc_dbid)) AS "Database",
        rsc_objid AS TableID,
    Convert(VarChar(30), Object_Name(rsc_objid, rsc_dbid))
        AS [Table Name_________],
        rsc_indid AS IndID, 
        CASE SubString (lock_type.name, 1, 4) 
            When '' Then 'None'
            When 'DB' Then 'Database'
            When 'FIL' Then 'File'
            When 'IDX' Then 'Index'
            When 'TAB' Then 'Table'
            When 'PAG' Then 'Page'
            When 'KEY' Then 'Key'
            When 'EXT' Then 'Extent'
            When 'RID' Then 'Row ID'
            When 'APP' Then 'Application'
            Else SubString (lock_type.name, 1, 4)
        END AS "Lock Type",
        Case SubString (lock_mode.name, 1, 12)
            When NULL Then 'N/A'
            When 'Sch-S' Then 'SCHEMA (Stability)'--'SCHEMA stability lock'
            When 'Sch-M' Then 'SCHEMA (Modification)'--'SCHEMA modification lock'
            When 'S' Then 'SHARED'--'SHARED Lock acquisition'
            When 'U' Then 'UPDATE'--'UPDATE lock acquisition'
            When 'X' Then 'EXCLUSIVE'--'EXCLUSIVE lock granted'
            When 'IS' Then 'SHARED (Intent)'--'INTENT for SHARED lock'
            When 'IU' Then 'UPDATE (Intent)'--'INTENT for UPDATE lock'
            When 'IX' Then 'EXCLUSIVE (Intent)'--'INTENT for EXCLUSIVE lock'
            When 'SIU' Then 'SHARED (Intent UPDATE)'--'SHARED lock with INTENT for UPDATE'
            When 'SIX' Then 'SHARED (Intent EXCLUSIVE)'--'SHARED lock with INTENT for EXCLUSIVE'
            When 'UIX' Then 'UPDATE'--'UPDATE lock with INTENT for EXCLUSIVE'
            When 'BU' Then 'UPDATE (BULK)'--'BULK UPDATE lock'
            Else SubString (lock_mode.name, 1, 12)
        END AS "Lock Mode", 
        SubString(lock_status.name, 1, 5) AS Status,
        SubString (rsc_text, 1, 16) AS Resource
    FROM 
        Master..SysLockInfo S
        JOIN Master..spt_values lock_type on S.rsc_type = lock_type.number
        JOIN Master..spt_values lock_status on S.req_status = lock_status.number
        JOIN Master..spt_values lock_mode on S.req_mode = lock_mode.number -1
        JOIN Master..SysProcesses P on S.req_spid = P.spid
    WHERE
            lock_type.type = 'LR'
        AND lock_status.type = 'LS'
        AND lock_mode.type = 'L'
        AND DB_Name(rsc_dbid) NOT IN ('master', 'msdb', 'model')
    ) AS X
WHERE TableID > 0
GROUP BY 
    HostName,
    "OS UserName",
    Login, 
    spid, 
    "Database", 
    TableID,
    "Table Name_________", 
    IndID, 
    "Lock Type", 
    "Lock Mode", 
    Status
ORDER BY
    spid, "Database", "Table Name_________", "Lock Type", Login