The order in which you want the data columns arranged when the trace results are returned. Let’s now look at a different example. You do not have to modify the settings of the Tuning Options tab before starting a tuning session. If you are a little confused about what each of these event do, don’t worry, as we will see them in action very soon, when their use will make much more sense.
Note that CPU data column is only captured for the RPC:Completed, SP:StmtCompleted, and the SQL:BatchCompleted events.
For example, we go to tbl_Customer table and we can see that. I run this trace a lot, so I have created it as a custom trace template, which includes all the events, data columns, column filters and column organization described previously. Assuming this data column is populated, you can use it to filter events on a particular application. However, what if we discovered cases where the duration was radically different? Figure 4-1 shows an example trace, displaying the captured events relating to the firing of a single stored procedure. I think you would agree that the shorter query would probably have more effect on the overall performance of the system than the longer one. For this part of the performance audit, you will be using the SQL Profiler tool that comes with SQL Server. Specify a trace table for a workload. When running the Profiler, do not select more data than you need to collect.
This very useful data column provides the length of time in microseconds that an event takes from beginning to end, but what is curious is than when Duration is displayed from the Profiler GUI, it is shown, by default, in milliseconds. You do not have to modify the settings of the Tuning Options tab before starting a tuning session.
If an isolated query is being executed, then the message “Dynamic SQL” is inserted in this data column. Instead it relies upon the metadata in the database. Step 3: Check the suggestions/definition made by Tuning wizard. Specify the first database to which Database Engine Tuning Advisor connects when tuning a workload. If the event is SP:StmtCompleted, the TextData column contains the Transact-SQL code for the query executed within the stored procedure.
The Database Engine Tuning Advisor GUI and the command-line dta utility can use this Transact-SQL script as a workload. If you add up the Duration, CPU, and Reads for each query within the stored procedure, the sum total will be very close to the total found in the SQL:BatchCompleted event. If you want to use an inline workload, which is a workload that is specified directly in the XML input file, use the sample XML Input File Sample with Inline Workload (DTA). I use this filter to exclude queries that execute very quickly (which is most queries). It is important not only to identify long-running queries, but also to identify those queries that execute the most often. How to Do Performance Tuning in SQL Server. Slow running queries are ones that take too long to run. We discovered that a single stored procedure was the cause of all 8 events that exceeded 10 seconds. This very useful data column helps you identify who is causing potential problems. Clear this check box to always start with the Database Engine Tuning Advisor defaults. This allows me to examine the stored procedure in question in the context of actual events occurring on the server. This data column is mandatory for every event, and contains the number of the server process ID (SPID) that is assigned to the client process creating the event. Number of items in most recently used lists Status I prefer to leave it to the default display of milliseconds, as it is easier to read. My Site show “Nothing’s due right now”, incorrectly!
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