What Is Console Table Used for in SQL Server?
In SQL Server, the console table is a special table that provides access to server status and performance information. It is used to retrieve information about the server, its databases, and its current activity. The console table is a dynamic management view (DMV), which means that it provides a real-time view of the server's state.
The console table can be used to monitor the server's performance, identify bottlenecks, and troubleshoot issues. It can also be used to gather information for performance tuning and capacity planning.
Columns in the Console Table
The console table contains a number of columns that provide information about the server. These columns include:
- Name: The name of the server.
- ServerName: The server's fully qualified domain name (FQDN).
- OSVersion: The operating system version of the server.
- SQLServerVersion: The version of SQL Server that is running on the server.
- ProcessorCount: The number of processors on the server.
- MemoryUsageMB: The amount of memory that is being used by SQL Server, in megabytes.
- Uptime: The amount of time that the server has been running, in days.
- LastRestartTime: The time that the server was last restarted.
- DatabaseCount: The number of databases on the server.
- UserCount: The number of users that are currently connected to the server.
- ActiveConnections: The number of active connections to the server.
- BlockedConnections: The number of connections that are currently blocked.
- Deadlocks: The number of deadlocks that have occurred since the server was last restarted.
- AvgCpuLoad: The average CPU load on the server over the last minute.
- AvgDiskIO: The average disk I/O rate on the server over the last minute.
- AvgMemoryUsageMB: The average memory usage on the server over the last minute.
Using the Console Table
The console table can be queried using the following syntax:
SELECT * FROM sys.dm_server_console_info;
The results of the query will be a table that contains the information described above.
Example
The following query retrieves information about the server's memory usage:
SELECT Name, MemoryUsageMB
FROM sys.dm_server_console_info;
The output of the query will be a table that contains the following information:
| Name | MemoryUsageMB |
|---|---|
| MyServer | 1024 |
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