Semaphore? I thought that was men waving flags...
Some SSIS load packages failed this morning >
Error 121: "The semaphore timeout period has expired" (ERROR_SEM_TIMEOUT).
There is no one answer to this except to say that is a tcp/ip networking error.
Newsgroup posts on the issue range from antivirus software, network congestion and black hole routers. If anyone can be less vague, i'd love to hear your thoughts.
http://support.microsoft.com/kb/325487
Friday, 30 November 2007
Wednesday, 21 November 2007
DMV Performance Counters - Buffer Cache hit ratio example
Demonstrates the dmv, sys_dm_os_performance_counters.
Returns a single value, i.e. the buffer cache hit ratio.
This represents how well pages stay in buffer cache.
The closer the result is to 100%, the better.
Corrected from version here
This version -
Returns a single value, i.e. the buffer cache hit ratio.
This represents how well pages stay in buffer cache.
The closer the result is to 100%, the better.
Corrected from version here
This version -
- includes the necessary join
- will run on any server (wildcarded the server name)
SELECT (a.cntr_value * 1.0 / b.cntr_value) * 100.0 [BufferCacheHitRatio] FROM (SELECT *, 1 x FROM sys.dm_os_performance_counters WHERE counter_name = 'Buffer cache hit ratio' AND object_name like '%:Buffer Manager%') a JOIN (SELECT *, 1 x FROM sys.dm_os_performance_counters WHERE counter_name = 'Buffer cache hit ratio base' AND object_name like '%Buffer Manager%') b ON a.x = b.x
Tuesday, 13 November 2007
Examining SQL Column types (2005+)
select o.type_desc, o.name, c.name, t.name , c.max_length, c.precision from sys.columns c inner join sys.types t on c.system_type_id = t.system_type_id inner join sys.objects o on c.object_id = o.object_id where o.type_desc not like 'system%' and o.type_desc not like 'int%' order by 1,2,3,4
Saturday, 10 November 2007
TSQL : Agent Job Notififications via email
A quick run through of setting email notifications for emails
1) Set Sql agent to use a database mail profile.
2) Add an operator (email recipient) for the alerts.
3) Set the jobs to send emails on failure.
1) Set Sql agent to use a database mail profile.
-- Set default database mail profile for sql agent -- My dbamail profile name is 'SQL Operator' USE [msdb] GO EXEC master.dbo.xp_instance_regwrite N'HKEY_LOCAL_MACHINE', N'SOFTWARE\Microsoft\MSSQLServer\SQLServerAgent', N'DatabaseMailProfile', N'REG_SZ', N'SQL Operator' GO
2) Add an operator (email recipient) for the alerts.
-- Add Operator Recipient for Sql Agent jobs USE [msdb] GO EXEC msdb.dbo.sp_add_operator @name=N'Agent Job Operator', @enabled=1, @pager_days=0, @email_address=N'dba@mydomain.co.uk' GO
3) Set the jobs to send emails on failure.
USE [msdb] GO sp_update_job select 'exec sp_update_job @job_name = '''+name+''' , @notify_email_operator_name = ''Agent Job Operator'' , @notify_level_email = 2' from msdb.dbo.sysjobs where enabled = 1 /* note values for @notify_level_email signify when to send emails are - 0 - never 1 - success 2 - failure 3 - always */
Moving TempDB / Splitting TempDB to multiple files
Script as below.
You need to restart SQL for tempdb to be recreated in the new locations...
You need to restart SQL for tempdb to be recreated in the new locations...
USE master GO -- move tempdb data ALTER DATABASE tempdb MODIFY FILE (NAME = tempdev, FILEGROWTH = 10% , MAXSIZE = UNLIMITED, SIZE=1000MB , FILENAME = 'D:\databases\tempdb_1.mdf') GO -- move tempdb log ALTER DATABASE tempdb MODIFY FILE (NAME = templog, SIZE=1, FILENAME = 'D:\databases\templog.ldf') GO -- additional processor? split tempdb into equal filesizes, 1 per processor... ALTER DATABASE tempdb ADD FILE (NAME = tempdev_2, FILEGROWTH = 10% , MAXSIZE = UNLIMITED, SIZE=1000MB , FILENAME = 'D:\databases\tempdb_2.mdf') GO
Wednesday, 7 November 2007
Configuring Event Forwarding - All events
USE msdb go EXEC master.dbo.sp_MSsetalertinfo @forwardingserver=N'test', @forwardalways=1, @forwardingseverity=10 go
Saturday, 3 November 2007
Vista : Disable TCP Window Scaling
TCP Window Scaling is a feature of Vista (& Windoze 2008 next year) that allows the intelligent use of a larger packet size when transferring data between hosts that support it.
The trouble is, not many hosts support it and some routers also dont like it.
The end result is people experiencing slow networking on Vista.
Turn it off like this (from Administrator command prompt) >
netsh interface tcp set global autotuninglevel=disabled
Check the status like this >
netsh interface tcp show global
A nice pretty screenshot >
The trouble is, not many hosts support it and some routers also dont like it.
The end result is people experiencing slow networking on Vista.
Turn it off like this (from Administrator command prompt) >
netsh interface tcp set global autotuninglevel=disabled
Check the status like this >
netsh interface tcp show global
A nice pretty screenshot >
Fast Row Counts
-- fast row counts SELECT S.name as schemaname, T.name as tablename, P.rows FROM sys.partitions P INNER JOIN sys.tables T ON P.object_Id = T.object_id INNER JOIN sys.schemas S ON T.schema_id = S.schema_id WHERE P.index_id IN (0,1) ORDER BY 1,2
Friday, 2 November 2007
USP_EffectiveLoginPermissions
Procedure to show login permissions for all databases on a server.
Create the Procedure in master db or your tools database.
Create the Procedure in master db or your tools database.
EXEC USP_EffectiveLoginPermissions '' go
CREATE PROCEDURE USP_EffectiveLoginPermissions @User VARCHAR(100) AS BEGIN SET NOCOUNT ON IF OBJECT_ID('tempdb..##ServerLogins') IS NOT NULL BEGIN DROP TABLE ##SERVERLOGINS END IF OBJECT_ID('tempdb..##DBUsers') IS NOT NULL BEGIN DROP TABLE ##DBUSERS END IF OBJECT_ID('tempdb..##DBList') IS NOT NULL BEGIN DROP TABLE ##DBLIST END IF OBJECT_ID('tempdb..##Results') IS NOT NULL BEGIN DROP TABLE ##RESULTS END DECLARE @DBName VARCHAR(128); DECLARE @SQLCmd VARCHAR(2000); DECLARE @NumberOfDBs INT; -- Get the SQL Server logins -- Create login table CREATE TABLE ##SERVERLOGINS ( [SID] VARBINARY(85) NULL, [LOGIN_NAME] VARCHAR(128) NULL); -- Populate login table INSERT INTO ##SERVERLOGINS SELECT SID,CAST(LOGINNAME AS VARCHAR(128)) AS [LOGIN_NAME] FROM MASTER.DBO.SYSLOGINS -- Create list of databases CREATE TABLE ##DBLIST ( [DBNAME] VARCHAR(128)) -- perform for all dbs on server INSERT INTO ##DBLIST SELECT [NAME] FROM MASTER..SYSDATABASES WHERE [DBID] > 4 ORDER BY [NAME]; SELECT @NumberOfDBs = COUNT(* ) FROM ##DBLIST -- Create the output table for the Database User ID's CREATE TABLE ##DBUSERS ( [DATABASE_USER_ID] VARCHAR(128), [SERVER_LOGIN] VARCHAR(128), [DATABASE_ROLE] VARCHAR(128), [DATABASE_NAME] VARCHAR(128)); -- Declare a cursor to loop through all the databases on the server DECLARE CSRDB CURSOR FOR SELECT [DBNAME] FROM ##DBLIST ORDER BY [DBNAME] -- Open the cursor and get the first database name OPEN CSRDB FETCH NEXT FROM CSRDB INTO @DBName -- Loop through the cursor WHILE @@FETCH_STATUS = 0 BEGIN -- populate ##DBUsers table for current db SELECT @SQLCmd = 'INSERT ##DBUsers ' + ' SELECT CAST(su.[name] AS VARCHAR(128)) AS [database_user_id], ' + ' CAST(COALESCE (u.[login_name], ''* Orphaned *'') AS VARCHAR(128))AS [server_login], ' + ' CAST(COALESCE (sug.name, ''Public'') AS VARCHAR(128)) AS [database_role],' + ' CAST(''' + @DBName + ''' AS VARCHAR(128)) AS [database_name]' + ' FROM [' + @DBName + '].[dbo].[sysusers] su' + ' LEFT OUTER JOIN ##ServerLogins u' + ' ON su.sid = u.sid' + ' LEFT OUTER JOIN ([' + @DBName + '].[dbo].[sysmembers] sm ' + ' INNER JOIN [' + @DBName + '].[dbo].[sysusers] sug ' + ' ON sm.groupuid = sug.uid)' + ' ON su.uid = sm.memberuid ' + ' WHERE su.hasdbaccess = 1' IF LTRIM(RTRIM(@User)) <> '' SELECT @SQLCmd = @SQLCmd + ' AND SU.name = ''' + @User + '''' -- uncomment to debug -- PRINT @SQLCmd EXEC(@SQLCmd) -- Get the next database name FETCH NEXT FROM CSRDB INTO @DBName -- End of the cursor loop END -- Close and deallocate the CURSOR CLOSE CSRDB DEALLOCATE CSRDB CREATE TABLE ##RESULTS ( [INSTANCE_NAME] VARCHAR(128), [DATABASE_NAME] VARCHAR(128), [OBJTYPE] VARCHAR(128), [LOGIN_STATUS] VARCHAR(128), [USERGRANTEE] VARCHAR(128)); TRUNCATE TABLE ##RESULTS --data for logins INSERT INTO ##RESULTS SELECT CAST(SERVERPROPERTY('ServerName') AS VARCHAR(50)) AS INSTANCE_NAME, DATABASE_NAME, MAX(CASE [DATABASE_ROLE] WHEN 'db_datareader' THEN 'db_datareader, ' ELSE '' END) + MAX(CASE [DATABASE_ROLE] WHEN 'db_accessadmin' THEN 'db_accessadmin, ' ELSE '' END) + MAX(CASE [DATABASE_ROLE] WHEN 'db_backupoperator' THEN 'db_backupoperator, ' ELSE '' END) + MAX(CASE [DATABASE_ROLE] WHEN 'db_datawriter' THEN 'db_datawriter, ' ELSE '' END) + MAX(CASE [DATABASE_ROLE] WHEN 'db_ddladmin' THEN 'db_ddladmin, ' ELSE '' END) + MAX(CASE [DATABASE_ROLE] WHEN 'db_denydatareader' THEN 'db_denydatareader, ' ELSE '' END) + MAX(CASE [DATABASE_ROLE] WHEN 'db_denydatawriter' THEN 'db_denydatawriter, ' ELSE '' END) + MAX(CASE [DATABASE_ROLE] WHEN 'db_owner' THEN 'db_owner, ' ELSE '' END) + MAX(CASE [DATABASE_ROLE] WHEN 'db_securityadmin' THEN 'db_securityadmin, ' ELSE '' END) + MAX(CASE [DATABASE_ROLE] WHEN 'public' THEN 'public, ' ELSE '' END) AS ROLE_OBJECTTYPE, CASE [SERVER_LOGIN] WHEN '* Orphaned *' THEN [SERVER_LOGIN] ELSE 'OK' END AS LOGIN_STATUS, CASE WHEN [DATABASE_USER_ID] = [SERVER_LOGIN] THEN [DATABASE_USER_ID] WHEN [SERVER_LOGIN] = '* Orphaned *' THEN [DATABASE_USER_ID] ELSE [DATABASE_USER_ID] + ' (' + [SERVER_LOGIN] + ')' END AS USER_GRANTEE FROM ##DBUSERS GROUP BY [DATABASE_NAME], [DATABASE_USER_ID], [SERVER_LOGIN] SELECT [INSTANCE_NAME], [DATABASE_NAME], [USERGRANTEE], LEFT(OBJTYPE,LEN([OBJTYPE])-1) AS ROLES, [LOGIN_STATUS] FROM ##RESULTS ORDER BY 1, 2, 3 END go
Thursday, 1 November 2007
USP_EffectivePermissions
Procedure to report on server & object permissions for a given user.
Usage : EXEC USP_EffectivePermissions 'username'
Install in master db to use from any db on the server.
Usage : EXEC USP_EffectivePermissions 'username'
Install in master db to use from any db on the server.
CREATE PROC USP_EffectivePermissions @User VARCHAR(100) AS BEGIN SET NOCOUNT ON IF OBJECT_ID('tempdb..##ServerLogins') IS NOT NULL BEGIN DROP TABLE ##SERVERLOGINS END IF OBJECT_ID('tempdb..##DBUsers') IS NOT NULL BEGIN DROP TABLE ##DBUSERS END IF OBJECT_ID('tempdb..##DBList') IS NOT NULL BEGIN DROP TABLE ##DBLIST END IF OBJECT_ID('tempdb..##DBObjPermissions') IS NOT NULL BEGIN DROP TABLE ##DBOBJPERMISSIONS END IF OBJECT_ID('tempdb..##CrossJoinMultiplier') IS NOT NULL BEGIN DROP TABLE ##CROSSJOINMULTIPLIER END IF OBJECT_ID('tempdb..##Results') IS NOT NULL BEGIN DROP TABLE ##RESULTS END DECLARE @DBName VARCHAR(128); DECLARE @SQLCmd VARCHAR(2000); DECLARE @NumberOfDBs INT; -- Get the SQL Server logins -- Create login table CREATE TABLE ##SERVERLOGINS ([SID] VARBINARY(85) NULL,[LOGIN_NAME] VARCHAR(128) NULL); -- Populate login table INSERT INTO ##SERVERLOGINS SELECT SID,CAST(LOGINNAME AS VARCHAR(128)) AS [LOGIN_NAME] FROM MASTER.DBO.SYSLOGINS WHERE LOGINNAME = @User; -- Create list of databases CREATE TABLE ##DBLIST ( [DBNAME] VARCHAR(128)) -- perform for all dbs on server INSERT INTO ##DBLIST SELECT NAME FROM MASTER..SYSDATABASES WHERE DBID > 4 ORDER BY NAME; SELECT @NumberOfDBs = COUNT(* ) FROM ##DBLIST -- Create the output table for the Database User ID's CREATE TABLE ##DBUSERS ( [DATABASE_USER_ID] VARCHAR(128), [SERVER_LOGIN] VARCHAR(128), [DATABASE_ROLE] VARCHAR(128), [DATABASE_NAME] VARCHAR(128)); -- Create the output table for Object Level Permissions CREATE TABLE ##DBOBJPERMISSIONS ( [DATABASE_NAME] VARCHAR(128), [GRANTOR] VARCHAR(128), [GRANTEE] VARCHAR(128), [OBJTYPE] VARCHAR(128), [OBJECTNAME] VARCHAR(128), [PERMISSION_LEVEL] VARCHAR(128), [PERMISSION] VARCHAR(128)); -- Declare a cursor to loop through all the databases on the server DECLARE CSRDB CURSOR FOR SELECT DBNAME FROM ##DBLIST ORDER BY DBNAME -- Open the cursor and get the first database name OPEN CSRDB FETCH NEXT FROM CSRDB INTO @DBName -- Loop through the cursor WHILE @@FETCH_STATUS = 0 BEGIN -- populate ##DBUsers table for current db SELECT @SQLCmd = 'INSERT ##DBUsers ' + ' SELECT CAST(su.[name] AS VARCHAR(128)) AS [database_user_id], ' + ' CAST(COALESCE (u.[login_name], ''* Orphaned *'') AS VARCHAR(128))AS [server_login], ' + ' CAST(COALESCE (sug.name, ''Public'') AS VARCHAR(128)) AS [database_role],' + ' CAST(''' + @DBName + ''' AS VARCHAR(128)) AS [database_name]' + ' FROM [' + @DBName + '].[dbo].[sysusers] su' + ' LEFT OUTER JOIN ##ServerLogins u' + ' ON su.sid = u.sid' + ' LEFT OUTER JOIN ([' + @DBName + '].[dbo].[sysmembers] sm ' + ' INNER JOIN [' + @DBName + '].[dbo].[sysusers] sug ' + ' ON sm.groupuid = sug.uid)' + ' ON su.uid = sm.memberuid ' + ' WHERE su.hasdbaccess = 1' + ' AND SU.name = ''' + @User + '''' -- uncomment to debug -- PRINT @SQLCmd EXEC(@SQLCmd) -- populate ##DBObjPermissions table for current db SELECT @SQLCmd = 'use [' + @DBName + '];' + 'insert into ##DBObjPermissions ' + ' select ' + ' CAST(''' + @DBName + ''' AS VARCHAR(128)) AS [database_name],' + ' user_name(sec.grantor) as grantor, ' + ' user_name(sec.uid) as grantee, ' + ' case obj.type ' + ' when ''C'' then ''Check constraint'' ' + ' when ''D'' then ''Default (constraint or stand-alone)'' ' + ' when ''F'' then ''Foreign Key'' ' + ' when ''PK'' then ''Primary Key'' ' + ' when ''P'' then ''Stored Procedure'' ' + ' when ''FN'' then ''Function (Scalar)'' ' + ' when ''IF'' then ''Function (Inline)'' ' + ' when ''R'' then ''Rule (old-style, stand-alone)'' ' + ' when ''RF'' then ''Replication-filter-procedure'' ' + ' when ''S'' then ''System base table'' ' + ' when ''TA'' then ''Assembly (CLR) DML trigger'' ' + ' when ''TF'' then ''Function (TableValued)'' ' + ' when ''U'' then ''Table'' ' + ' when ''UQ'' then ''Unique constraint'' ' + ' when ''V'' then ''View'' ' + ' when ''X'' then ''Extended stored procedure'' ' + ' end as objtype, ' + ' stbl.name + ''.'' + obj.name as objectname, ' + ' protecttype.name permission_level, ' + ' action.name as permission ' + ' from ' + '[' + @DBName + '].dbo.sysobjects as obj ' + ' inner join [' + @DBName + '].dbo.sysusers as stbl on stbl.uid = obj.uid ' + ' and stbl.name = ''' + @User + '''' + ' inner join ##DBUsers on ##DBUsers.[database_user_id] COLLATE SQL_Latin1_General_CP1_CS_AS = stbl.name COLLATE SQL_Latin1_General_CP1_CS_AS' + ' inner join [' + @DBName + '].dbo.sysprotects as sec on sec.id = obj.id ' + ' inner join master.dbo.spt_values as action on sec.action = action.number and action.type = ''t'' ' + ' inner join master.dbo.spt_values as protecttype on sec.protecttype = protecttype.number and protecttype.type = ''t'' ' + ' where objectpropertyex(obj.id,''ismsshipped'') = 0 ' -- uncomment to debug -- PRINT @SQLCmd EXEC(@SQLCmd) -- Get the next database name FETCH NEXT FROM CSRDB INTO @DBName -- End of the cursor loop END -- Close and deallocate the CURSOR CLOSE CSRDB DEALLOCATE CSRDB CREATE TABLE ##CROSSJOINMULTIPLIER ( USERNAME VARCHAR(128) NULL); IF @NumberOfDBs = 1 INSERT INTO ##CROSSJOINMULTIPLIER SELECT [SERVER_LOGIN] FROM ##DBUSERS -- 1 db, multiply section headers by users ELSE INSERT INTO ##CROSSJOINMULTIPLIER SELECT TOP 1 'dummy' FROM SYSOBJECTS -- multiple dbs, CREATE TABLE ##RESULTS ( [HEADER_ROW] INT,[DATABASE_NAME] VARCHAR(128),[SORT_ORDER] INT,[GRANTOR] VARCHAR(128),[GRANTEE] VARCHAR(128),[OBJTYPE] VARCHAR(128),[OBJECTNAME] VARCHAR(128),[USERGRANTEE] VARCHAR(128),[PERMISSION_LEVEL] VARCHAR(128),[PERMISSION] VARCHAR(128)); TRUNCATE TABLE ##RESULTS --data for logins INSERT INTO ##RESULTS SELECT 0 AS HEADER_ROW, CAST(SERVERPROPERTY('ServerName') AS VARCHAR(50)) + ' - ' + DATABASE_NAME AS DATABASE_NAME, 2 AS SORT_ORDER, '' AS GRANTOR, '' AS GRANTEE, MAX(CASE [DATABASE_ROLE] WHEN 'db_datareader' THEN 'db_datareader, ' ELSE '' END) + MAX(CASE [DATABASE_ROLE] WHEN 'db_accessadmin' THEN 'db_accessadmin, ' ELSE '' END) + MAX(CASE [DATABASE_ROLE] WHEN 'db_backupoperator' THEN 'db_backupoperator, ' ELSE '' END) + MAX(CASE [DATABASE_ROLE] WHEN 'db_datawriter' THEN 'db_datawriter, ' ELSE '' END) + MAX(CASE [DATABASE_ROLE] WHEN 'db_ddladmin' THEN 'db_ddladmin, ' ELSE '' END) + MAX(CASE [DATABASE_ROLE] WHEN 'db_denydatareader' THEN 'db_denydatareader, ' ELSE '' END) + MAX(CASE [DATABASE_ROLE] WHEN 'db_denydatawriter' THEN 'db_denydatawriter, ' ELSE '' END) + MAX(CASE [DATABASE_ROLE] WHEN 'db_owner' THEN 'db_owner, ' ELSE '' END) + MAX(CASE [DATABASE_ROLE] WHEN 'db_securityadmin' THEN 'db_securityadmin, ' ELSE '' END) + MAX(CASE [DATABASE_ROLE] WHEN 'public' THEN 'public, ' ELSE '' END) AS ROLE_OBJECTTYPE, 'database user' AS OBJ_NAME, CASE [SERVER_LOGIN] WHEN [DATABASE_USER_ID] THEN [DATABASE_USER_ID] ELSE [DATABASE_USER_ID] + ' (' + [SERVER_LOGIN] + ')' END AS USER_GRANTEE, '' AS PERMISSION_LEVEL, '' AS PERMISSION FROM ##DBUSERS GROUP BY [DATABASE_NAME], [DATABASE_USER_ID], [SERVER_LOGIN] -- data for objects INSERT INTO ##RESULTS SELECT 0 AS HEADER_ROW, CAST(SERVERPROPERTY('ServerName') AS VARCHAR(50)) + ' - ' + DATABASE_NAME AS DATABASE_NAME, 4 AS SORT_ORDER, GRANTOR, GRANTEE, [OBJTYPE] AS ROLE_OBJECTTYPE, [OBJECTNAME] AS OBJ_NAME, [GRANTEE] AS USER_GRANTEE, [PERMISSION_LEVEL] AS PERMISSION_LEVEL, [PERMISSION] AS PERMISSION FROM ##DBOBJPERMISSIONS INSERT INTO ##RESULTS SELECT 1 AS HEADER_ROW, CAST(SERVERPROPERTY('ServerName') AS VARCHAR(50)) + ' - ' + DBNAME AS DATABASE_NAME, 1 AS SORT_ORDER, '' AS GRANTOR, '' AS GRANTEE, 'Role' AS ROLE_OBJECTTYPE, 'Object' AS OBJ_NAME, 'User' AS USER_GRANTEE, ' ' AS PERMISSION_LEVEL, ' ' AS PERMISSION FROM ##DBLIST INNER JOIN ##RESULTS ON ##RESULTS.DATABASE_NAME = CAST(SERVERPROPERTY('ServerName') AS VARCHAR(50)) + ' - ' + ##DBLIST.DBNAME AND ##RESULTS.SORT_ORDER = 2 -- header rows for objects INSERT INTO ##RESULTS SELECT 1 AS HEADER_ROW, CAST(SERVERPROPERTY('ServerName') AS VARCHAR(50)) + ' - ' + DBNAME AS DATABASE_NAME, 3 AS SORT_ORDER, '' AS GRANTOR, '' AS GRANTEE, 'Object Type' AS ROLE_OBJECTTYPE, 'Object' AS OBJ_NAME, 'Grantee' AS USER_GRANTEE, 'Permission Level' AS PERMISSION_LEVEL, 'Permission' AS PERMISSION FROM ##DBLIST INNER JOIN ##RESULTS ON ##RESULTS.DATABASE_NAME = CAST(SERVERPROPERTY('ServerName') AS VARCHAR(50)) + ' - ' + ##DBLIST.DBNAME AND ##RESULTS.SORT_ORDER = 4 SELECT DATABASE_NAME, GRANTOR, GRANTEE, OBJTYPE, OBJECTNAME, USERGRANTEE, PERMISSION_LEVEL, PERMISSION FROM ##RESULTS ORDER BY DATABASE_NAME, SORT_ORDER END go
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