MS SQL Server 支持了 OS Thread 实现的 DBMS Thread,但是应用场景比较少。 Process/thread pool 使用Process pool 要比 Process per DBMS worker 模式更节省内存,而且也容易 Port 到对 Thread 支持不好的 OS 上。Oracle 也将这种模式作为一种支持的选项,并且推荐在用户并发连接多时使用这种模式。Oracle 的默认...
如需配置單位的詳細資訊,請參閱 SQL Server 和 Azure SQL 索引架構和設計指南。 您可以納入包含資料列溢位資料的資料行,做為非叢集索引的索引鍵或非索引鍵資料行。 使用疏鬆資料行之資料表的記錄大小限制為 8,018 個位元組。 當轉換的資料加上現有記錄資料超過 8,018 個位元組時,就會傳回 MSSQLSERVER ERROR ...
The driver converts JDBC calls directly in to a vendor specific database protocol (TDS in the case of SQL Server).Because of these criteria, a type 4 of driver is sometimes called a “native protocol driver” or a “direct-to-database, pure java driver”. More importantly, there ar...
Open Data Services SQL Server (MSSQLServer service) SQL Server Agent (SQLServerAgent service) Microsoft Search service Microsoft Distributed Transaction Coordinator (MS DTC service) When SQL Server is running on Microsoft Windows NT, SQL Server, SQL Server Agent, and MS DTC are implemented ...
Understand the characteristics of the columns used in the queries. For example, an index is ideal for columns that have an integer data type and are also unique or non-null columns. For columns that have well-defined subsets of data, you can use a filtered index in SQL Server 2008 (10.0...
Switch to the new Microsoft OLE DB Driver (MSOLEDBSQL) for SQL Server or the latest Microsoft ODBC Driver for SQL Server going forward. For SQLNCLI that ships as a component of SQL Server Database Engine (versions 2012 through 2019), see this Support Lifec...
For more information, see Server Memory Server Configuration: Set options manually and Lock pages in memory (LPIM). If LPIM isn't enabled, SQL Server switches to using conventional memory and in cases of OS memory exhaustion, and the [MSSQLSERVER_17890] error(errors-events/mssqlserver-17890...
If LPIM isn't enabled, SQL Server switches to using conventional memory and in cases of OS memory exhaustion, and the [MSSQLSERVER_17890] error(errors-events/mssqlserver-17890-database-engine-error.md) might be reported in the error log. The ...
Analysis Services contains a single fixed server role, which grants its members permission to perform any task within the entire instance. Users who are not members of the fixed server role can be made members of one or more database roles. Each database role has a customized set of permissi...
\Program Files\Microsoft SQL Server\MSSQL10_50.MSSQLSERVER\MSSQL\data\MyDB_FG1_2.ndf', SIZE = 1MB, MAXSIZE=10MB, FILEGROWTH=1MB) LOG ON ( NAME='MyDB_log', FILENAME = 'c:\Program Files\Microsoft SQL Server\MSSQL10_50.MSSQLSERVER\MSSQL\data\MyDB.ldf', SIZE=1MB, MAXSIZE=10MB,...