DBCC TRACEOFF is a database console command (DBCC) in Microsoft SQL Server that can be used to disable trace flags, which are special switches that can be used to change the behavior of the database engine for troubleshooting or testing purposes. Disabling trace flags can be useful for restoring the default behavior of the database engine after a trace flag has been enabled.
To use DBCC TRACEOFF, you must specify the trace flag number you want to disable. You can also specify the -1 trace flag number to disable all trace flags that are currently enabled.
Here is an example of how to use DBCC TRACEOFF to disable trace flag 3604:
-- Disable trace flag 3604
DBCC TRACEOFF (3604);
Here is an example of how to use DBCC TRACEOFF to disable all trace flags that are currently enabled:
-- Disable all trace flags that are currently enabled
DBCC TRACEOFF (-1);
The output of DBCC TRACEOFF will be a message indicating whether the operation was successful or not. If the operation was successful, the specified trace flag(s) will be disabled.
It’s important to note that DBCC TRACEOFF is a global command and will disable trace flags for all connections to the database engine. As a result, it is generally best to avoid using DBCC TRACEOFF in production environments, or to use it sparingly and only when necessary.
DBCC TRACEOFF is a useful tool for disabling trace flags in SQL Server, but it should be used with caution. It is generally best to avoid using DBCC commands in production environments, as they can have an impact on server performance.
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