sql disk io

short reblogged from http://www.mssqltips.com/sqlservertip/2127/benchmarking-sql-server-io-with-sqlio/ 1) change param.txt to bigger testfile (10Gb) and correct drive: param.txt c:\testfile.dat 8 0x0 10240 #name threads cpuaffinity sizeInMB 2) create testfile: sqlio -kW -s5 -fsequential -o4 -b64 -Fparam.txt C:\Program Files (x86)\SQLIO>sqlio -kW -s5 -fsequential -o4 -b64 -Fparam.txt sqlio v1.5.SG parameter file used: param.txt file c:\testfile.dat with 8 threads (0-7) using mask 0x0 (0) 8 threads writing for 5 secs to file c:\testfile.dat using 64KB sequential IOs enabling multiple I/Os per thread with 4 outstanding size of file c:\testfile.dat needs to be: 10737418240 bytes current file size: 0 bytes need to expand by: 10737418240 bytes expanding c:\testfile.dat ... done. using specified size: 10240 MB for file: c:\testfile.dat initialization done CUMULATIVE DATA: throughput metrics: IOs/sec: 1327.03 MBs/sec: 82.93 VM on HyperV on SSD Raid,other examples: Al: IOs/sec: 3862.24 MBs/sec: 241.39 3) RANDOM WRITE TEST: (-d ... Drive -s seconds -t threads simultan) sqlio -dC -BH -kW -frandom -t1 -o1 -s60 -b64 \testfile.dat sqlio -dC -BH -kW -frandom -t2 -o1 -s60 -b64 \testfile.dat sqlio -dC -BH -kW -frandom -t4 -o1 -s60 -b64 \testfile.dat sqlio -dC -BH -kW -frandom -t8 -o1 -s60 -b64 \testfile.dat C:\Program Files (x86)\SQLIO>sqlio -dC -BH -kW -frandom -t1 -o1 -s90 -b64 \testfile.dat sqlio v1.5.SG 1 thread writing for 90 secs to file C:\testfile.dat using 64KB random IOs enabling multiple I/Os per thread with 1 outstanding buffering set to use hardware disk cache (but not file cache) using current size: 10240 MB for file: C:\testfile.dat initialization done CUMULATIVE DATA: throughput metrics: IOs/sec: 1082.02 MBs/sec: 67.62 Al -t1: IOs/sec: 915.90 MBs/sec: 57.24 4)RANDOM READ TEST: sqlio -dC -BH -kR -frandom -t1 -o1 -s60 -b64 \testfile.dat sqlio -dC -BH -kR -frandom -t2 -o1 -s60 -b64 \testfile.dat sqlio -dC -BH -kR -frandom -t4 -o1 -s60 -b64 \testfile.dat sqlio -dC -BH -kR -frandom -t8 -o1 -s60 -b64 \testfile.dat C:\Program Files (x86)\SQLIO>sqlio -dC -BH -kR -frandom -t1 -o1 -s30 -b64 \testfile.dat sqlio v1.5.SG 1 thread reading for 30 secs from file C:\testfile.dat using 64KB random IOs enabling multiple I/Os per thread with 1 outstanding buffering set to use hardware disk cache (but not file cache) using current size: 10240 MB for file: C:\testfile.dat initialization done CUMULATIVE DATA: throughput metrics: IOs/sec: 2409.36 MBs/sec: 150.58 Al: IOs/sec: 278.00 MBs/sec: 17.37

powershell examples

get-host update-help Get-ExecutionPolicy Get-PSDrive get-vm -ComputerName hv01,hv02,hv04 | where State -eq Off | sort name help New-SelfSignedCertificate -Examples New-SelfSignedCertificate -DnsName www.test.net -CertStoreLocation Cert:\LocalMachine\My $var=read-host "Enter a Computername" Write-Output "Test" Write-Host "Test" Write-Warning "Test" 's1','s2' | foreach {write-output $_}

values constructor sql server

select * from (values (10),(20)) as TabName(colName)

kiwi syslog daily logfile

Default/Actions/Log to file C:\Programme\Syslogd\Logs\Interfaceueberwachung\log%DateISO.txt

Sql Server Performance optimierung

set statistics io, time on;

linux :ende von dateien anschauen

Tail –f /var/log/syslog Oder Tail –f /var/log/messages

Anzahl der Zeilen: -n

tail filename -n

wireshark filters

udp ... all udp entries ip.addr == 192.168.1.1 ... all from / to 192.168.1.1

team foundation server command line remove Locks

Zurücksetzen von Locks/CheckOuts für andere Benutzer: Die Operationen können mit dem TF Kommando in einer Visual 2010 Konsole ausgeführt werden. Checkouts von jemanden anderen rückgängig machen: D:\TFS\TFSTestprojekt>tf undo $/Intern_Testprojekt_EP_V004 /workspace:WST08008;har mar

Sql Server Trigger to set Last Change Date & Last Change User

ALTER TRIGGER [dbo].[Holidays_SetModified] ON [dbo].[Holidays]
AFTER INSERT,UPDATE AS
BEGIN
  --PRINT '[sf_KISData].[sf_KISData_Cascade_Modified] BEGIN'
  DECLARE @id AS int
  DECLARE @mod AS DATETIME
  DECLARE @LUserId as int
  DECLARE curInserted CURSOR LOCAL FOR
        SELECT id, DateLastModified,LUserId FROM Inserted
  OPEN curInserted FETCH NEXT FROM curInserted INTO @id, @mod, @LUserId
  WHILE (@@FETCH_STATUS = 0)
   BEGIN
     IF NOT UPDATE(DateLastModified) OR @mod IS NULL
     BEGIN
        UPDATE Holidays SET DateLastModified= getutcdate(), LUserId=User_Id() WHERE id= @id      END
     FETCH NEXT FROM curInserted INTO @id, @mod, @LUserId
 END
 CLOSE curInserted
 --PRINT '[sf_KISData].[sf_KISData_Cascade_Modified] END'
END

Sql Server User Functions

SELECT USER_NAME(), SYSTEM_USER, CURRENT_USER,SESSION_USER, USER_ID(); select * from sys.sysusers

(freie) Antiviren software vergleich

free AVG: schnell und einfach zu bedienen, Netzlaufwerkscan möglich, im (chip test eher nicht so gut Trend Micro im Chip test beste Erkennungsrate, kann keine Netzlaufwerke scannen (zumindest nicht in trial version) und es gibt keine freie version free Avast: für Programmierer ungeeignet, da scannt nach jedem kompelieren, Netzlaufwerksscan ok

oracle sid

reblogged from http://www.bunyamindemir.com/?p=113 1) SELECT global_name FROM global_name; 2) SELECT INSTANCE_NAME FROM v$instance; 3) echo $ORACLE_SID; 4) SHOW PARAMETER INSTANCE_NAME; 5) SELECT sys_context('USERENV','INSTANCE_NAME') FROM dual; 6) SELECT ORA_DATABASE_NAME FROM dual;

Sql Server Datafile Size in MB / GB

SELECT DB_NAME(database_id) [DatabaseName], [name] AS [LogicalName], (size*8)/1024/1024 [GB] FROM sys.master_files order by size desc select (size*8)/1024 [MB],* from sys.database_files

power shell zip

#to create a new zip file: # Set-Content $arg[0] (“PK”+ [char]5 + [char]6 + (“$([char]0)”* 18)) #copy a file to new zip file $Shell=New-Object -ComObject Shell.Application $ZipFolder=$Shell.Namespace(‘F:\backup.zip’) $ZipFolder.CopyHere(‘C:\0bat\test.txt’)

ISO: Windows Burn Disc Image not visible / Datenträger Abbild brennen nicht sichtbar

Windows Explorer rigth mouse button Burn Disc Image not visible / rechte Maustaste Datenträger Abbild brennen nicht sichtbar => set Windows Explorer as standard program for ISO => rigth mouse button Burn Disc Image visible => Windows Explorer als Standard Programm setzen => rechte Maustaste Datenträger Abbild brennen sichtbar

Oracle Autoextend - Autogrow of Datafiles - automatisches Datenfile vergößern

ALTER TABLESPACE USERS ADD DATAFILE 'C:\oradata\dev4\USERS02.dbf' SIZE 500M AUTOEXTEND ON NEXT 500M; wenn das USERS02.dbf voll wird wird es um 500MB vergrößert when USERS02.dbf is fll oracle increases its size by 500MB

c# wpf fill comboox with enum

string s=cbScchVersion.SelectedValue.ToString(); object o=Enum.Parse(typeof(AppObject.ScchVersion),s); int i=(int)o; AppObject.ScchVer = (AppObject.ScchVersion) i;

Visual Studio Find and Replace Regular Expressions / Suchen und Ersetzten mit Regulären Ausdrücken (regex)

auf gefunde Ausdrücke greift man mit z.b. \0 zu, \0 gibt den ersten gefunden Ausdruck zurück. möchte man z.b. in allen DllImport Statements ,CallingConvention=CallingConvention.Cdecl hinzufügen, bsp: [DllImport(DRIVER_DLL_NAME, EntryPoint = "is_StopLiveVideo")] suchen: EntryPoint.*" ersetzen: \0, CallingConvention=CallingConvention.Cdecl Ergebnis: [DllImport(DRIVER_DLL_NAME, EntryPoint = "is_StopLiveVideo",CallingConvention=CallingConvention.Cdecl)]

PInvokeStackImbalance was detected (c# / .net) - fix : CallingConvention.Cdecl

[DllImport(DRIVER_DLL_NAME, EntryPoint = "is_ClearSequence")] // is_ClearSequence private static extern int is_ClearSequence(int hCam); [DllImport(DRIVER_DLL_NAME, EntryPoint = "is_ClearSequence", CallingConvention = CallingConvention.Cdecl)] // is_ClearSequence private static extern int is_ClearSequence(int hCam);

sql server tables unused space / unbenutzer Platz in Sql Server Tabellen, filesize / filegröße

--sql server tables unused space / unbenutzer Platz in Sql Server Tabellen: SELECT t.NAME AS TableName, s.Name AS SchemaName, p.rows AS RowCounts, SUM(a.total_pages) * 8 AS TotalSpaceKB, SUM(a.used_pages) * 8 AS UsedSpaceKB, (SUM(a.total_pages) - SUM(a.used_pages)) * 8 AS UnusedSpaceKB FROM sys.tables t INNER JOIN sys.indexes i ON t.OBJECT_ID = i.object_id INNER JOIN sys.partitions p ON i.object_id = p.OBJECT_ID AND i.index_id = p.index_id INNER JOIN sys.allocation_units a ON p.partition_id = a.container_id LEFT OUTER JOIN sys.schemas s ON t.schema_id = s.schema_id WHERE t.NAME NOT LIKE 'dt%' AND t.is_ms_shipped = 0 AND i.OBJECT_ID > 255 GROUP BY t.Name, s.Name, p.Rows ORDER BY UnusedSpaceKB desc --filegröße / filesize SELECT DB_NAME(database_id) AS DatabaseName, Name AS Logical_Name, Physical_Name, (size*8)/1024 SizeMB FROM sys.master_files where right(physical_name,3)='mdf' order by size desc