The collection set is run by a SQL Server Agent job or jobs, and data is uploaded to the management data warehouse on a predefined schedule.” Predefined data collection sets Each collection set can be applied to a target that matches the target types of all the collector types that are part of a collection set. “Collection sets are defined and deployed on a server instance and can be run independently of each other. Integration Services packages transform and load the collected data into the MDW database The feature also adds tables to the msdb database, to store the configuration, auditing and collection history information, job information and SSIS packages Once Data Collector is enabled, it creates a number of scheduled jobs necessary for automatic data collection and data upload into the MDW database. The data it captures is not only displayed in real-time graphs, like with Activity Monitor, but also saved for later analysisīesides Data Warehousing, Data Collector uses SQL Server Agent and Integration Services One DMW database can be used as a central database repository for all monitored SQL Server instances The MDW growth rate depends on the number of transactions, and for high-transaction databases, this can be a couple of hundred MBs a day Keep in mind that the MDW can grow fast and make sure you have enough free disk space available. The best solution is to use a SQL Server instance designated only for the MDW, as the feature doesn’t have an option to exclude a specific database from data collecting. It is recommended for the Management Data Warehouse (MDW) database to be stored in a non-production SQL Server instance. “The data collector also uses a data warehouse, a relational database that enables you to manage the data that you collect by setting different retention periods for your data.” You can also create additional data collectors and monitor more metrics How does Data Collector work?ĭata Collector can run constantly, or on a pre-defined schedule The information collected by default is about disk usage, query statistics, and server activity. It has three built-in data collecting specifications (data collectors) designed to collect the most important performance metrics. It was introduced in SQL Server 2008 and is available in the Enterprise, Standard, Business Intelligence, and Web editionsĭata Collector can gather performance information from multiple SQL Server instances and store it in a single repository.
SQL Server Data Collector is a feature for performance monitoring and tuning available in SQL Server Management Studio.
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