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Here you can add your trace flag number along with -T and then click on Ok button to close the window. Here you can click on Startup Parameters tab.

You can launch SQL Server Configuration Manager and open the Properties window of SQL Server service. This ensures the trace flag remains active after a server restart. If you want to enable any trace flag permanently then we recommend that you should enable them at startup, by using the -T command line option. Remember, all trace flags enabled using DBCC TRACEON command will be disabled once you restart the SQL Server service. Here, I will show you different uses of DBCC TRACEON command to enable trace flags. We use DBCC TRACEON command to enable SQL Server trace flags. We enable trace flags to gather more information about certain logs during some transactions. DBCC TRACESTATUS(8690, -1) Enable Trace Flag If you want to check whether trace flag status for specific trace is enabled globally or not then you can run below command. If you want to list all the trace flags that are enabled for the current session then you can get it by running below command. Run below command to get the status of trace flags 86. We can even get status of multiple specific trace flags by executing below command. Run below command to display the status of all trace flags that are currently enabled globally. Let’s go ahead and understand how we can check the status of trace flags running on your SQL Server instance. If you will try to enable global trace flag for a particular session then there will not be any impact of this trace flag. Global trace flags are set at the server level and must be enabled globally.

This type of trace flag never affects another session running on your database server and the effect of the trace flag is lost when that connection logs out. Session trace flags can be enabled for a connection and are visible only to that connection. We can enable trace flag for the context of a specific query that we can run under a session.

There are two types of trace flags in SQL Server. Trace flags are frequently used to diagnose performance issues or to debug stored procedures or complex computer systems.” Let’s start with the basics. MSDN says “Trace flags are used to temporarily set specific server characteristics or to switch off a particular behavior. Here i am going to discuss about SQL Server Trace flag and how we can enable, disable or check their status whether they are enabled or disabled on your SQL Server Instance. We use DBCC commands to enable trace flags, disable trace flags or check the status of trace flags. Trace flags are used to gather in-depth information about certain logs during some transactions.