Label:Preparatory work:In order to detect deadlocks, we need to simulate the deadlock first. This example creates two transactions using two different sessions. Steps:1. Open SQL Server Profiler 2. Select "New trace" to connect to the instance. 3. Then select "Blank" Template: 4. On the Event Selection page, expand the Locks event and select the following event: 1. Deadlock graph 2, Lock:deadlock 3, Lock:
With regard to the use of SQL Server Profiler, there are already many tutorials on the web, such as this article: SQL Server Profiler: How to use and metrics. Microsoft Official Documentation: https://msdn.microsoft.com/zh-cn/library/ms179428 (v=sql.105). aspx is described i
, Sql:stmtstarting6, click on "Column Filter", in the tracking properties, select the database name is required to detect the database, here use AdventureWorks.7. In the "organization column", adjust the order as follows:8, click to run.9. Then open SQL Server and open two connections.10. Enter and execute the following script in the first window:Use AdventureWorks Goset TRANSACTION isolation level repeatab
' default trace enabled ', 0; RECONFIGURE with OVERRIDE; To turn off default tracing. Black box tracking, is to help us diagnose the database is nothing from a run of the exception, in the MSDN search Sp_create_trace should also find out option, we can also create a similar stored procedure to quickly create a black box trace to help us diagnose some exceptions! CREATE PROCEDURE Sp_trace_blackbox @FilePath nvarchar (260) As BEGIN DECLARE @TraceID
Tags: style blog http color io os ar for file If you need to reprint, please attach the author and the original link: http://www.cnblogs.com/zeusro/p/4016228.htmlMicrosoft SQL Server Profiler is a graphical user interface for SQL tracing that is used to monitor the database engine or instances of analysis Services. You can capture data about each event and sav
During data query optimization, set statistics IO/time on is added before the SQL statement to run and view the IO, reads, CPU usage time, and other information of the current statement. This information is obtained repeatedly by adding, removing, or modifying indexes to check whether the statement has been optimized.
In SQL Server 2005, there is an
Tags: tool using order get GES STC Application Data How Reprint: Experience sharing using SQL Profiler Trace (2005) (new trace, analysis trace file) The use of SQL Server Profiler can be seen in this article Sql2005 performance tools (SQL Server
DemandUse SQL Server Profiler to track all common activities of the current instance and save the results to a file.================================================================In the Start program, select SQL Server Profiler.650) this.width=650; "title=" "style=" border-top:0px;border-right:0px;background-image:non
SQL Server has an SQL profiler that can track the SQL statements executed by the server in real time, which is useful in many times for debugging errors. For example, the complexity of othersCode, Production system, no debugging environment, no original code ......
After checking the information, My
Server Security Login or Windows login creden, in the format of "domain \ User Name ")
The CPU time (in milliseconds) used by the CPU event ).
The number of times that the server Reads the Logical Disk from the event.
The number of times the Writes event is written to a physical disk by the server.
The time used by the Duration event. Although the duration of the Server is measured in microseconds, SQL Server Pro
Do the background to start the site to consider some of the background to the database operations, such as minimizing the number of queries, release the connection as soon as possible, only select the required fields and so on. If you are using three-tier development, complex projects directly assembled SQL statements a little more, the assembled SQL statement can be ru
you can see for yourself.Just click Show all events to make the selection of all events.We can also filter the statistics fields, click any of the column headings to view a description of the column asWe indicate from the above:TextDate relies on the text value of the event class captured in the trace;ApplicationName the name of the client application that created the SQL Server connection. This column is populated by the value passed by the applicat
performance.If the database is using SQL Server, the work will be simpler, and we can use SQL Server Profiler directly using the default settings (but SQL Server itself is very complex, even this simple profiler tool, In the deep use of the time also have a lot of knowledge
Original: Using SQL Profiler to handle expensive queriesWhen the performance of SQL Server becomes worse, the following two things are most likely to occur:
First, some queries produce a lot of pressure on system resources. These queries affect the performance of the entire system because the server is not able to serve other
Tags: style blog http using data os1. Click Start-Program--microsoft SQL Server 2008--Performance tool--sql Server Profiler, such as: 2. Then go to SQL Server Profiler window: 3, in the work window pops the Data Connection window, enters the data connection the server and th
Do development, usually inevitably and database dealing with, especially write stored procedures, for those of us who do not often write SQL is a very painful thing, every write run is always wrong, if the use of the local database is OK, you can debug SQL in this machine, if the database on the server, debugging is disabled, It's tragic.Recently, due to job requ
:
Improve the performance of the expensive query itself;
Reduce the overall pressure on the system resources;
less database blocking;
The more expensive queries can be divided into the following two categories:
Word execution: The single execution cost of the query is large;
Multiple executions: The query itself costs little, but the repeated execution of the query leads to pressure on the system resources;
1, a single execution of large-cost queryYou ca
Label:The role of replay tracking You can use a trace as a test tool, and when you call some stored procedures in the correct order, you will be able to regenerate specific failures. Tracking templates There are four options for saving a trace (file-to-Save As) 1. The trace files option is used to save the data in a binary format file, which is the fastest, and the least disk-byte-consuming method. 2. The trace table option is used to save the data to a new or pre-created table in the user-sele
messages, and queries that cause failures:; With Exceptions as (SELECTT0. Spid,t0. Eventsequence,coalesce (T0. TextData, ' Attention ') as EXCEPTION,T1. TextData as Messagetextfrom tracetable t0left OUTER JOIN tracetable T1 ONT1. Eventsequence = T0. Eventsequence + 1AND T1. EventClass = 162wheret0. EventClass in (16,33) and (T0. EventClass = + OR T1. Eventsequence is not NULL)) SELECT *from exceptionscross APPLY (select TOP (1) TextData as Querytextfrom tracetable QUERIESWH Erequeries.spid = Ex
Workarounds for SQL Server Profiler cannot be paused and stoppedAlthough SQL Server Profiler works well, there is an issue where you cannot pause and stop after you start profiler on the local database (locally) (Once you pause or stop for a long time), this problem occurs p
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