什么?有个 SQL 执行了 8 秒!
哪里出了问题?臣妾不知道啊,得找 DBA 啊。
DBA 人呢?离职了!!擦!!!
程序员在无处寻求帮助时,就得想办法自救,努力让自己变成 "伪 DBA"。
索引
- SQL Server 安装的是什么版本
- Windows 操作系统是什么版本
- SQL Server 是什么时候安装的
- 服务器主机名是什么
- 硬件服务器是谁制造的
- 服务器硬件是什么配置
- 服务器的 CPU 有几个核
- 服务器的 CPU 是什么型号
- SQL Server 启动了哪些服务
- 查看指定服务运行状态
- SQL Server 的 IP 地址信息
- SQL Server 监听了哪些 TCP 端口
- SQL Server 配置项信息
- 当前连接的 Session 有多少
- 每个数据库上的 Session 数量是多少
- 按主机查询 Session 数量
- 哪个 IP 地址上建立的连接最多
- 查看 Table 的基本属性
- 查看 Table 的数据行数
SQL Server 安装的是什么版本
SELECT @@VERSION AS [SQL Server Version];
版本号说明:
Version |
Product |
Release Date |
10.0.1600 |
SQL Server 2008 RTM |
August 7, 2008 |
10.0.2531 |
SQL Server 2008 SP1 RTM |
April 7, 2009 |
10.0.4000 |
SQL Server 2008 SP2 RTM |
September 29, 2010 |
10.0.5500 |
SQL Server 2008 SP3 RTM |
October 6, 2011 |
10.0.6000 |
SQL Server 2008 SP4 RTM |
September 30, 2014 |
10.50.1600 |
SQL Server 2008 R2 RTM |
April 21, 2010 |
10.50.2500 |
SQL Server 2008 R2 SP1 RTM |
July 11, 2011 |
10.50.4000 |
SQL Server 2008 R2 SP2 RTM |
July 26, 2012 |
10.50.6000 |
SQL Server 2008 R2 SP3 RTM |
September 26, 2014 |
11.0.2100 |
SQL Server 2012 RTM |
March 6, 2012 |
11.0.3000 |
SQL Server 2012 SP1 RTM |
November 6, 2012 |
11.0.5058 |
SQL Server 2012 SP2 RTM |
June 10, 2014 |
12.0.2000 |
SQL Server 2014 RTM |
April 1, 2014 |
缩略语说明:
Version |
Description |
CTP |
Community Technology Preview (Beta Release) |
RC |
Release Candidate |
RTM |
Released To Manufacturing |
CU |
Cumulative Update |
SP |
Service Pack |
GDR |
General Distribution Release |
QFE |
Quick Fix Engineering |
比如,下面查到的版本号:
- Build Version : 11.00.3153
- File Version : 2011.110.3153.0
Windows 操作系统是什么版本
SELECT windows_release
,windows_service_pack_level
,windows_sku
,os_language_version
FROM sys.dm_os_windows_info WITH (NOLOCK)
OPTION (RECOMPILE);
其中 windows_release 中的版本号代表着:
Version |
Windows |
6.3 |
Windows 8.1 or Windows Server 2012 R2 |
6.2 |
Windows 8 or Windows Server 2012 |
6.1 |
Windows 7 or Windows Server 2008 R2 |
6.0 |
Windows Vista or Windows Server 2008 |
5.2 |
Windows XP or Windows Server 2003 |
其中 windows_sku 代表着:
SKU Code |
Edition |
4 |
Enterprise Edition |
7 |
Standard Edition |
48 |
Professional Edition |
SQL Server 2008 中没有 sys.dm_os_windows_info,可以使用 @@VERSION 来看了。
SELECT @@VERSION AS [SQL Server Version];
SQL Server 是什么时候安装的
SELECT @@SERVERNAME AS [Server Name]
,create_date AS [SQL Server Install Date]
FROM sys.server_principals WITH (NOLOCK)
WHERE NAME = N'NT AUTHORITY\SYSTEM'
OR NAME = N'NT AUTHORITY\NETWORK SERVICE'
OPTION (RECOMPILE);
服务器主机名是什么
SELECT SERVERPROPERTY('MachineName') AS [MachineName]
,SERVERPROPERTY('ServerName') AS [ServerName]
,SERVERPROPERTY('InstanceName') AS [Instance]
,SERVERPROPERTY('IsClustered') AS [IsClustered]
,SERVERPROPERTY('ComputerNamePhysicalNetBIOS') AS [ComputerNamePhysicalNetBIOS]
,SERVERPROPERTY('Edition') AS [Edition]
,SERVERPROPERTY('ProductLevel') AS [ProductLevel]
,SERVERPROPERTY('ProductVersion') AS [ProductVersion]
,SERVERPROPERTY('ProcessID') AS [ProcessID]
,SERVERPROPERTY('Collation') AS [Collation]
,SERVERPROPERTY('IsFullTextInstalled') AS [IsFullTextInstalled]
,SERVERPROPERTY('IsIntegratedSecurityOnly') AS [IsIntegratedSecurityOnly];
硬件服务器是谁制造的
EXEC xp_readerrorlog 0, 1, N'Manufacturer';
服务器硬件是什么配置
SELECT cpu_count AS [Logical CPU Count]
,scheduler_count
,hyperthread_ratio AS [Hyperthread Ratio]
,cpu_count / hyperthread_ratio AS [Physical CPU Count]
,physical_memory_kb / 1024 AS [Physical Memory (MB)]
,committed_kb / 1024 AS [Committed Memory (MB)]
,committed_target_kb / 1024 AS [Committed Target Memory (MB)]
,max_workers_count AS [Max Workers Count]
,affinity_type_desc AS [Affinity Type]
,sqlserver_start_time AS [SQL Server Start Time]
,virtual_machine_type_desc AS [Virtual Machine Type]
FROM sys.dm_os_sys_info WITH (NOLOCK)
OPTION (RECOMPILE);
SQL Server 2008 R2 可以使用:
SELECT cpu_count AS [Logical CPU Count]
,hyperthread_ratio AS [Hyperthread Ratio]
,cpu_count / hyperthread_ratio AS [Physical CPU Count]
,physical_memory_in_bytes / 1048576 AS [Physical Memory (MB)]
,sqlserver_start_time
,affinity_type_desc
FROM sys.dm_os_sys_info WITH (NOLOCK)
OPTION (RECOMPILE);
服务器的 CPU 有几个核
EXEC sys.xp_readerrorlog 0
,1
,N'detected'
,N'socket';
服务器的 CPU 是什么型号
EXEC xp_instance_regread N'HKEY_LOCAL_MACHINE'
,N'HARDWARE\DESCRIPTION\System\CentralProcessor\0'
,N'ProcessorNameString';
SQL Server 启动了哪些服务
SELECT servicename
,process_id
,startup_type_desc
,status_desc
,last_startup_time
,service_account
,is_clustered
,cluster_nodename
,[filename]
FROM sys.dm_server_services WITH (NOLOCK)
OPTION (RECOMPILE);
查看指定服务运行状态
EXEC master.dbo.xp_servicecontrol 'QUERYSTATE'
,'MSSQLServer' EXEC master.dbo.xp_servicecontrol 'QUERYSTATE'
,'SQLServerAgent' EXEC master.dbo.xp_servicecontrol 'QUERYSTATE'
,'SQLBrowser'
SQL Server 的 IP 地址信息
SELECT CONNECTIONPROPERTY('net_transport') AS net_transport
,CONNECTIONPROPERTY('protocol_type') AS protocol_type
,CONNECTIONPROPERTY('auth_scheme') AS auth_scheme
,CONNECTIONPROPERTY('local_net_address') AS local_net_address
,CONNECTIONPROPERTY('local_tcp_port') AS local_tcp_port
,CONNECTIONPROPERTY('client_net_address') AS client_net_address; SELECT SERVERPROPERTY(N'MachineName') AS MachineName;
SQL Server 监听了哪些 TCP 端口
SELECT listener_id
,ip_address
,is_ipv4
,port
,type_desc
,state_desc
,start_time
FROM sys.dm_tcp_listener_states WITH (NOLOCK)
ORDER BY listener_id
OPTION (RECOMPILE);
SQL Server 配置项信息
SELECT [name]
,value
,value_in_use
,minimum
,maximum
,[description]
,is_dynamic
,is_advanced
FROM sys.configurations WITH (NOLOCK)
ORDER BY [name]
OPTION (RECOMPILE);
通常会关注:
- backup compression default :通常为 1;
- cost threshold for parallelism
- clr enabled
- lightweight pooling :通常为 0;
- max degree of parallelism
- max server memory (MB)
- optimize for ad hoc workloads :通常为 1;
- priority boost :通常为 0;
当前连接的 Session 有多少
SELECT login_name
,[program_name]
,COUNT(session_id) AS [session_count]
FROM sys.dm_exec_sessions WITH (NOLOCK)
GROUP BY login_name
,[program_name]
ORDER BY COUNT(session_id) DESC
OPTION (RECOMPILE);
每个数据库上的 Session 数量是多少
SELECT DB_NAME(dbid) AS DBName
,COUNT(dbid) AS NumberOfConnections
,loginame AS LoginName
FROM sys.sysprocesses
WHERE dbid > 0
GROUP BY dbid
,loginame
ORDER BY 1, 2, 3;
按主机查询 Session 数量
CREATE TABLE #tbl (
spid INT
,ecid INT
,[status] VARCHAR(50)
,loginame VARCHAR(255)
,hostname VARCHAR(255)
,blk VARCHAR(50)
,dbname VARCHAR(255)
,cmd VARCHAR(255)
,request_id VARCHAR(255)
)
GO INSERT INTO #tbl
EXEC sp_who; SELECT COUNT(0) AS CountByHostName
,hostname
FROM #tbl
GROUP BY hostname; SELECT COUNT(0) AS CountByDBName
,dbname
FROM #tbl
GROUP BY dbname; DROP TABLE #tbl
GO
哪个 IP 地址上建立的连接最多
SELECT ec.client_net_address
,es.[program_name]
,es.[host_name]
,es.login_name
,COUNT(ec.session_id) AS [connection count]
FROM sys.dm_exec_sessions AS es WITH (NOLOCK)
INNER JOIN sys.dm_exec_connections AS ec WITH (NOLOCK) ON es.session_id = ec.session_id
GROUP BY ec.client_net_address
,es.[program_name]
,es.[host_name]
,es.login_name
ORDER BY ec.client_net_address
,es.[program_name]
OPTION (RECOMPILE);
查看 Table 的基本属性
SELECT [name]
,create_date
,lock_on_bulk_load
,is_replicated
,has_replication_filter
,is_tracked_by_cdc
,lock_escalation_desc
FROM sys.tables WITH (NOLOCK)
ORDER BY [name]
OPTION (RECOMPILE);
查看 Table 的数据行数
SELECT OBJECT_NAME(object_id) AS [ObjectName]
,SUM(Rows) AS [RowCount]
,data_compression_desc AS [CompressionType]
FROM sys.partitions WITH (NOLOCK)
WHERE index_id < 2 --ignore the partitions from the non-clustered index if any
AND OBJECT_NAME(object_id) NOT LIKE N'sys%'
AND OBJECT_NAME(object_id) NOT LIKE N'queue_%'
AND OBJECT_NAME(object_id) NOT LIKE N'filestream_tombstone%'
AND OBJECT_NAME(object_id) NOT LIKE N'fulltext%'
AND OBJECT_NAME(object_id) NOT LIKE N'ifts_comp_fragment%'
AND OBJECT_NAME(object_id) NOT LIKE N'filetable_updates%'
AND OBJECT_NAME(object_id) NOT LIKE N'xml_index_nodes%'
GROUP BY object_id
,data_compression_desc
ORDER BY SUM(Rows) DESC
OPTION (RECOMPILE);
《人人都是 DBA》系列文章索引:
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本系列文章《人人都是 DBA》由 Dennis Gao 发表自博客园,未经作者本人同意禁止任何形式的转载,任何自动或人为的爬虫转载行为均为耍流氓。