| The wait type SNI_CRITICAL_SECTION is ranked #137 by Stedman Solutions and Database Health Monitor. Wait statistics, in the context of SQL Server, refer to the amount of time that a query spends waiting to access data in the database. When a client application requests data from the database, the request is placed in a queue and the client application must wait for its turn to access the data. The time that the query spends waiting is called a "wait" and is tracked by SQL Server. This information can be used to identify potential performance bottlenecks and optimize the performance of the database. Wait statistics are commonly used by database administrators to diagnose and troubleshoot performance issues in SQL Server. SQL Server is a database management system that is used to store and retrieve data. In order to run efficiently, SQL Server uses a number of different "wait types" to manage its internal processes. One of these wait types is called SNI_CRITICAL_SECTION. A wait type is a specific type of delay that SQL Server experiences while it is running a query or performing other tasks. When SQL Server encounters a SNI_CRITICAL_SECTION wait type, it means that it is waiting for access to a critical section of code that is being used by another process. Critical sections are used in SQL Server to protect shared resources from being accessed or modified by multiple processes at the same time. This is important because accessing or modifying these resources simultaneously can lead to corruption or other problems. When a process needs to access a critical section of code, it must wait until the other process has finished using it before it can proceed. SNI_CRITICAL_SECTION wait types are typically not a cause for concern, as they are a normal part of the way SQL Server manages its internal processes. However, they can indicate potential performance issues if they are occurring frequently or for long periods of time. In these cases, it may be necessary to optimize the database or the queries being run in order to reduce the number of SNI_CRITICAL_SECTION waits and improve overall performance. In summary, SNI_CRITICAL_SECTION is a wait type in SQL Server that occurs when the database is waiting for access to a critical section of code that is being used by another process. This type of wait is typically not a problem, but it can indicate potential performance issues if it occurs frequently or for long periods of time. Applies toSee AlsoAll Wait Types |  |