SQL Server Active Sessions - sql-server

How to get active sessions details with database and object details in SQL Server?


The sys.dm_exec_sessions view reports all authenticated sessions within SQL Server.
You can use the following query;
SELECT * FROM sys.dm_exec_sessions
For more detailed query you can use this;
SELECT s.session_id, s.login_time, s.host_name, s.program_name,
s.login_name, s.nt_user_name, s.is_user_process,
s.database_id, DB_NAME(s.database_id) AS [database],
s.status,
s.reads, s.writes, s.logical_reads, s.row_count,
c.session_id, c.net_transport, c.protocol_type,
c.client_net_address, c.client_tcp_port,
c.num_writes AS DataPacketWrites
FROM sys.dm_exec_sessions s
INNER JOIN sys.dm_exec_connections c
ON s.session_id = c.session_id
INNER JOIN sys.dm_exec_requests r
ON s.session_id = r.session_id

Related

Determine Who did What from Transaction logs

We received full backup and transaction logs files from a third party, which is used to restore our local SQL Server instance.
We are trying to know who did what from these files. I searched online and my query looks like:
The problem is Transaction SID column is always empty. Is there any way to fix this?
SELECT so.*, Operation, [Transaction SID],SUSER_NAME([Transaction SID]) AS [LoginName]
FROM fn_dump_dblog(NULL,NULL,'DISK',1
,'C:\yardi_tran\extract\201911130900.bak0'
,'C:\yardi_tran\extract\201911130900.bak1'
,'C:\yardi_tran\extract\201911130900.bak2'
,'C:\yardi_tran\extract\201911130900.bak3'
,'C:\yardi_tran\extract\201911130900.bak4'
,'C:\yardi_tran\extract\201911130900.bak5'
,'C:\yardi_tran\extract\201911130900.bak6'
,'C:\yardi_tran\extract\201911130900.bak7'
,'C:\yardi_tran\extract\201911130900.bak8'
,'C:\yardi_tran\extract\201911130900.bak9'
,'C:\yardi_tran\extract\201911130900.bak10'
,'C:\yardi_tran\extract\201911130900.bak11'
,'C:\yardi_tran\extract\201911130900.bak12'
,'C:\yardi_tran\extract\201911130900.bak13'
,'C:\yardi_tran\extract\201911130900.bak14'
,'C:\yardi_tran\extract\201911130900.bak15'
,'C:\yardi_tran\extract\201911130900.bak16'
,NULL,NULL,NULL
,NULL,NULL,NULL,NULL, NULL,NULL,NULL,NULL,NULL,NULL
,NULL,NULL,NULL,NULL, NULL,NULL,NULL,NULL,NULL,NULL
,NULL,NULL,NULL,NULL, NULL,NULL,NULL,NULL,NULL,NULL
,NULL,NULL,NULL,NULL, NULL,NULL,NULL,NULL,NULL,NULL
,NULL,NULL,NULL,NULL) blog
INNER JOIN
sys.partitions sp ON blog.PartitionId=sp.partition_id
INNER JOIN
sys.objects so ON so.object_id = sp.object_id
WHERE blog.Operation ='LOP_DELETE_ROWS'
AND so.type_desc='USER_TABLE'

SQL Server Database mail does not work

I had database e-mail setup and it was working for the past three years or so. Now all of a sudden it is not working. When I run the following query I see no users
SELECT l.name LoginName, u.name UserName, r.name RoleName
FROM master.sys.server_principals l
JOIN msdb.sys.database_principals u
ON u.sid = l.sid
LEFT JOIN msdb.sys.database_role_members rm
ON rm.member_principal_id = u.principal_id
LEFT JOIN msdb.sys.database_principals r
ON r.principal_id = rm.role_principal_id
WHERE l.name = SUSER_NAME()
AND r.name IN ('db_owner', 'DatabaseMailUser')
It seems like someone went in changed all the permissions of all the users. What should I do to get my e-mails working again? I have SQL Server 2008 R2.

How to find all users with execute rights on a stored procedure in SQL Server

...using SQL Server 2008 R2. I know how to find all objects a user has rights to, but how do I find all accounts that have execute rights on a particular object

Below query observed from How Can we find user have Execute Right on SP will help you get the required information (Not tested .. so minor tweak may be required).
SELECT
s.name AS SchemaName,
o.name AS ObjectName,
dp.name AS PrincipalName,
dperm.type AS PermissionType,
dperm.permission_name AS PermissionName,
dperm.state AS PermissionState,
dperm.state_desc AS PermissionStateDescription
FROM sys.objects o
INNER JOIN sys.schemas s on o.schema_id = s.schema_id
INNER JOIN sys.database_permissions dperm ON o.object_id = dperm.major_id
INNER JOIN sys.database_principals dp
ON dperm.grantee_principal_id = dp.principal_id
WHERE
dperm.class = 1 --object or column
AND
dperm.type = 'EX'
AND
dp.name = 'Specific_username'
AND
o.name = 'specific_object_name'

You did not specify whether you want it through T-SQL or Management Studio. For T-SQL you already have answer, for Management Studio just right-click the object (e.g. table, stored procedure), click Properties, and then select Permissions tab. Don't miss the blue links "View schema permissions", "View database permissions", "View server permissions".

Database backup in SQL Server 2008

How can i check with SQL query whether Database backup JOB is created or not ?
Thank You

This query will return all jobs that have the command BACKUP DATABASE in them:
SELECT SV.name,
SV.description,
S.step_id
FROM msdb.dbo.sysjobs_view SV
INNER JOIN msdb.dbo.sysjobsteps S ON SV.job_id = S.job_id
WHERE s.command LIKE '%BACKUP DATABASE%'
If you setup the job categories properly to have a category called 'Database Backup' the following would also work:
SELECT SV.name,
SV.description
FROM msdb.dbo.sysjobs_view SV
INNER JOIN msdb.dbo.syscategories SC ON SV.category_id = SC.category_id
WHERE SC.Name = 'Database Backup'

List the queries running on SQL Server

Is there a way to list the queries that are currently running on MS SQL Server (either through the Enterprise Manager or SQL) and/or who's connected?
I think I've got a very long running query is being execute on one of my database servers and I'd like to track it down and stop it (or the person who keeps starting it).

This will show you the longest running SPIDs on a SQL 2000 or SQL 2005 server:
select
P.spid
, right(convert(varchar,
dateadd(ms, datediff(ms, P.last_batch, getdate()), '1900-01-01'),
121), 12) as 'batch_duration'
, P.program_name
, P.hostname
, P.loginame
from master.dbo.sysprocesses P
where P.spid > 50
and P.status not in ('background', 'sleeping')
and P.cmd not in ('AWAITING COMMAND'
,'MIRROR HANDLER'
,'LAZY WRITER'
,'CHECKPOINT SLEEP'
,'RA MANAGER')
order by batch_duration desc
If you need to see the SQL running for a given spid from the results, use something like this:
declare
#spid int
, #stmt_start int
, #stmt_end int
, #sql_handle binary(20)
set #spid = XXX -- Fill this in
select top 1
#sql_handle = sql_handle
, #stmt_start = case stmt_start when 0 then 0 else stmt_start / 2 end
, #stmt_end = case stmt_end when -1 then -1 else stmt_end / 2 end
from sys.sysprocesses
where spid = #spid
order by ecid
SELECT
SUBSTRING( text,
COALESCE(NULLIF(#stmt_start, 0), 1),
CASE #stmt_end
WHEN -1
THEN DATALENGTH(text)
ELSE
(#stmt_end - #stmt_start)
END
)
FROM ::fn_get_sql(#sql_handle)

If you're running SQL Server 2005 or 2008, you could use the DMV's to find this...
SELECT *
FROM sys.dm_exec_requests
CROSS APPLY sys.dm_exec_sql_text(sql_handle)
More about sys.dm_exec_requests
More about sys.dm_exec_sql_text

You can run the sp_who command to get a list of all the current users, sessions and processes. You can then run the KILL command on any spid that is blocking others.

I would suggest querying the sys views. something similar to
SELECT *
FROM
sys.dm_exec_sessions s
LEFT JOIN sys.dm_exec_connections c
ON s.session_id = c.session_id
LEFT JOIN sys.dm_db_task_space_usage tsu
ON tsu.session_id = s.session_id
LEFT JOIN sys.dm_os_tasks t
ON t.session_id = tsu.session_id
AND t.request_id = tsu.request_id
LEFT JOIN sys.dm_exec_requests r
ON r.session_id = tsu.session_id
AND r.request_id = tsu.request_id
OUTER APPLY sys.dm_exec_sql_text(r.sql_handle) TSQL
This way you can get a TotalPagesAllocated which can help you figure out the spid that is taking all the server resources. There has lots of times when I can't even bring up activity monitor and use these sys views to see what's going on.
I would recommend you reading the following article. I got this reference from here.

As a note, the SQL Server Activity Monitor for SQL Server 2008 can be found by right clicking your current server and going to "Activity Monitor" in the context menu. I found this was easiest way to kill processes if you are using the SQL Server Management Studio.

There are various management views built into the product. On SQL 2000 you'd use sysprocesses. On SQL 2K5 there are more views like sys.dm_exec_connections, sys.dm_exec_sessions and sys.dm_exec_requests.
There are also procedures like sp_who that leverage these views. In 2K5 Management Studio you also get Activity Monitor.
And last but not least there are community contributed scripts like the Who Is Active by Adam Machanic.

SELECT
p.spid, p.status, p.hostname, p.loginame, p.cpu, r.start_time, r.command,
p.program_name, text
FROM
sys.dm_exec_requests AS r,
master.dbo.sysprocesses AS p
CROSS APPLY sys.dm_exec_sql_text(p.sql_handle)
WHERE
p.status NOT IN ('sleeping', 'background')
AND r.session_id = p.spid

Actually, running EXEC sp_who2 in Query Analyzer / Management Studio gives more info than sp_who.
Beyond that you could set up SQL Profiler to watch all of the in and out traffic to the server. Profiler also let you narrow down exactly what you are watching for.
For SQL Server 2008:
START - All Programs - Microsoft SQL Server 2008 - Performance Tools - SQL Server Profiler
Keep in mind that the profiler is truly a logging and watching app. It will continue to log and watch as long as it is running. It could fill up text files or databases or hard drives, so be careful what you have it watch and for how long.

In the Object Explorer, drill-down to: Server -> Management -> Activity Monitor. This will allow you to see all connections on to the current server.

You can use below query to find running last request:
SELECT
der.session_id
,est.TEXT AS QueryText
,der.status
,der.blocking_session_id
,der.cpu_time
,der.total_elapsed_time
FROM sys.dm_exec_requests AS der
CROSS APPLY sys.dm_exec_sql_text(sql_handle) AS est
Using below script you can also find number of connection per database:
SELECT
DB_NAME(DBID) AS DataBaseName
,COUNT(DBID) AS NumberOfConnections
,LogiName
FROM sys.sysprocesses
WHERE DBID > 0
GROUP BY DBID, LogiName
For more details please visit:
http://www.dbrnd.com/2015/06/script-to-find-running-process-session-logged-user-in-sql-server/

here is a query that will show any queries that are blocking. I am not entirely sure if it will just show slow queries:
SELECT p.spid
,convert(char(12), d.name) db_name
, program_name
, convert(char(12), l.name) login_name
, convert(char(12), hostname) hostname
, cmd
, p.status
, p.blocked
, login_time
, last_batch
, p.spid
FROM master..sysprocesses p
JOIN master..sysdatabases d ON p.dbid = d.dbid
JOIN master..syslogins l ON p.sid = l.sid
WHERE p.blocked = 0
AND EXISTS ( SELECT 1
FROM master..sysprocesses p2
WHERE p2.blocked = p.spid )

The right script would be like this:
select
p.spid, p.status,p.hostname,p.loginame,p.cpu,r.start_time, t.text
from sys.dm_exec_requests as r, sys.sysprocesses p
cross apply sys.dm_exec_sql_text(p.sql_handle) t
where p.status not in ('sleeping', 'background')
and r.session_id=p.spid

SELECT
p.spid, p.status, p.hostname, p.loginame, p.cpu, r.start_time, t.text
FROM
sys.dm_exec_requests as r,
master.dbo.sysprocesses as p
CROSS APPLY sys.dm_exec_sql_text(p.sql_handle) t
WHERE
p.status NOT IN ('sleeping', 'background')
AND r.session_id = p.spid
And
KILL #spid

in 2005 you can right click on a database, go to reports and there's a whole list of reports on transitions and locks etc...

Trying to put things together (hope to be helpful):
SELECT
p.spid,
RIGHT(CONVERT(varchar, DATEADD(ms, DATEDIFF(ms, p.last_batch, GETDATE()), '1900-01-01'), 121), 12) AS [batch_duration],
p.[program_name],
p.hostname,
MAX(p.loginame) AS loginame,
(SELECT SUBSTRING(text, COALESCE(NULLIF(spid.stmt_start, 0), 1) + 1, CASE spid.stmt_end WHEN -1 THEN DATALENGTH(text) ELSE (spid.stmt_end - spid.stmt_start) END) FROM ::fn_get_sql(spid.[sql_handle])) AS [sql]
FROM
master.dbo.sysprocesses p
LEFT JOIN (
SELECT
ROW_NUMBER() OVER(PARTITION BY spid ORDER BY ecid) AS i,
spid,
[sql_handle],
CASE stmt_start WHEN 0 THEN 0 ELSE stmt_start / 2 END AS stmt_start,
CASE stmt_end WHEN -1 THEN -1 ELSE stmt_end / 2 END AS stmt_end
FROM sys.sysprocesses
) spid ON p.spid = spid.spid AND spid.i = 1
WHERE
p.spid > 50
AND p.status NOT IN ('background', 'sleeping')
AND p.cmd NOT IN ('AWAITING COMMAND', 'MIRROR HANDLER', 'LAZY WRITER', 'CHECKPOINT SLEEP', 'RA MANAGER')
GROUP BY
p.spid,
p.last_batch,
p.[program_name],
p.hostname,
spid.stmt_start,
spid.stmt_end,
spid.[sql_handle]
ORDER BY
batch_duration DESC,
p.spid
;

Use Sql Server Profiler (tools menu) to monitor executing queries and use activity monitor in Management studio to see how is connected and if their connection is blocking other connections.

You should try very usefull procedure sp_whoIsActive which can be found here: http://whoisactive.com and it is free.

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