sys.dm_fts_active_catalogs (Transact-SQL)

Artikkeli
02/27/2023

Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance

Returns information on the full-text catalogs that have some population activity in progress on the server.

Note

The following columns will be removed in a future version of Microsoft SQL Server: is_paused, previous_status, previous_status_description, row_count_in_thousands, status, status_description, and worker_count. Avoid using these columns in new development work, and plan to modify applications that currently use any of them.

Column name	Data type	Description
database_id	int	ID of the database that contains the active full-text catalog.
catalog_id	int	ID of the active full-text catalog.
memory_address	varbinary(8)	Address of memory buffers allocated for the population activity related to this full-text catalog.
name	nvarchar(128)	Name of the active full-text catalog.
is_paused	bit	Indicates whether the population of the active full-text catalog has been paused.
status	int	Current state of the full-text catalog. One of the following: 0 = Initializing 1 = Ready 2 = Paused 3 = Temporary error 4 = Remount needed 5 = Shutdown 6 = Quiesced for backup 7 = Backup is done through catalog 8 = Catalog is corrupt
status_description	nvarchar(120)	Description of current state of the active full-text catalog.
previous_status	int	Previous state of the full-text catalog. One of the following: 0 = Initializing 1 = Ready 2 = Paused 3 = Temporary error 4 = Remount needed 5 = Shutdown 6 = Quiesced for backup 7 = Backup is done through catalog 8 = Catalog is corrupt
previous_status_description	nvarchar(120)	Description of previous state of the active full-text catalog.
worker_count	int	Number of threads currently working on this full-text catalog.
active_fts_index_count	int	Number of full-text indexes that are being populated.
auto_population_count	int	Number of tables with an auto population in progress for this full-text catalog.
manual_population_count	int	Number of tables with manual population in progress for this full-text catalog.
full_incremental_population_count	int	Number of tables with a full or incremental population in progress for this full-text catalog.
row_count_in_thousands	int	Estimated number of rows (in thousands) in all full-text indexes in this full-text catalog.
is_importing	bit	Indicates whether the full-text catalog is being imported: 1 = The catalog is being imported. 2 = The catalog is not being imported.

Remarks

The is_importing column was introduced in SQL Server 2008 (10.0.x).

Permissions

On SQL Server and SQL Managed Instance, requires VIEW SERVER STATE permission.

On SQL Database Basic, S0, and S1 service objectives, and for databases in elastic pools, the server admin account, the Microsoft Entra admin account, or membership in the ##MS_ServerStateReader## server role is required. On all other SQL Database service objectives, either the VIEW DATABASE STATE permission on the database, or membership in the ##MS_ServerStateReader## server role is required.

Permissions for SQL Server 2022 and later

Requires VIEW SERVER PERFORMANCE STATE permission on the server.

Physical joins

Diagram of physical joins for sys.dm_fts_active_catalogs.

Relationship cardinalities

From	To	Relationship
`dm_fts_active_catalogs.database_id`	`dm_fts_index_population.database_id`	One-to-one
`dm_fts_active_catalogs.catalog_id`	`dm_fts_index_population.catalog_id`	One-to-one

Examples

The following example returns information about the active full-text catalogs on the current database.

SELECT catalog.name, catalog.is_importing, catalog.auto_population_count,  
  OBJECT_NAME(population.table_id) AS table_name,  
  population.population_type_description, population.is_clustered_index_scan,  
  population.status_description, population.completion_type_description,  
  population.queued_population_type_description, population.start_time,  
  population.range_count   
FROM sys.dm_fts_active_catalogs catalog   
CROSS JOIN sys.dm_fts_index_population population   
WHERE catalog.database_id = population.database_id   
AND catalog.catalog_id = population.catalog_id   
AND catalog.database_id = (SELECT dbid FROM sys.sysdatabases WHERE name = DB_NAME());  
GO

Next steps

Full-Text Search and Semantic Search Dynamic Management Views and Functions (Transact-SQL)

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