This DMV returns information about the amount of log space currently used, and indicates when the transaction log needs truncation.įor information about the current log file size, its maximum size, and the autogrow option for the file, you can also use the size, max_size, and growth columns for that log file in sys.database_files. Monitor log space use by using sys.dm_db_log_space_usage. Connect to a user databaseĬAST(FILEPROPERTY(name, 'SpaceUsed') AS decimal(19,4)) * 8 / 1024. Use the following query to return the amount of database file space allocated and the amount of unused space allocated. Query a single database for file space information The following diagram illustrates the relationship between the different types of storage space for a database. The amount of data space allocated cannot grow beyond the data max size. The maximum amount of space that can be used for storing database data. This quantity represents the maximum amount of free space that can be reclaimed by shrinking database data files. The difference between the amount of data space allocated and data space used. This behavior ensures that future inserts are faster since space does not need to be reformatted. The amount of space allocated grows automatically, but never decreases after deletes. The amount of formatted file space made available for storing database data. For example, deleting one row from every data page does not necessarily decrease the space used. In some cases, the space used does not change on inserts or deletes depending on the amount and pattern of data involved in the operation and any fragmentation. Generally, space used increases (decreases) on inserts (deletes). The amount of space used to store database data. Understanding the following storage space quantities are important for managing the file space of a database. Understand types of storage space for a database For information about Azure SQL Database, see Manage file space for databases in Azure SQL Database. Though very similar, for information on managing the size of transaction log files in Azure SQL Managed Instance, see Manage file space for databases in Azure SQL Managed Instance. The following screenshot demonstrate the same.This article covers how to monitor SQL Server transaction log size, shrink the transaction log, add to or enlarge a transaction log file, optimize the tempdb transaction log growth rate, and control the growth of a transaction log file. Double click on that particular error event so that you can find the cause of the error. On the right side, look for the source and the corresponding error. Following is a snapshot of the error logs folder.įor finding the event logs, one needs to go toĬontrol panel -> Administrative Tools -> Event Viewer (Local) -> Windows Logs -> Appplication folder Here we can find the error logs created each time when an instance of SQL server fails to start. To find the event log and error logs for error details, we need to go toĬ:\Program Files -> Microsoft SQL Server -> MSSQL12.MSSQLSERVER -> MSSQL-> Log -> How does a person go about in finding the error log and event log?įollowing is a common error message faced by SQL Server DBAs: In case of such issues, one needs to find error log and event log. This is a quick blog post which helps us debug, in case the SQL Server Configuration Manager failed or the service did not respond.
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