| The wait type WRITE_COMPLETION is ranked #19 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. The WRITE_COMPLETION wait type indicates that a task is waiting for a write operation to complete. This can occur when a task is writing data to a disk or network drive, or when it is writing data to a memory-mapped file. This wait type is often seen when a task is performing a large bulk load operation or when it is flushing data to disk to ensure durability. The length of time that a task spends waiting on this wait type can be a good indication of the performance of the underlying storage system. Applies toSee AlsoAll Wait Types |  |