Monitoring Transaction Log Space Usage in SQL Server

DBCC SQLPERF(LOGSPACE) is a system command in SQL Server that provides information about the transaction log usage for each database on the SQL Server instance. It shows how much of the transaction log is being used, which can help you monitor log growth and avoid running out of log space.

Output Columns:

• Database Name: The name of the database.
• Log Size (MB): The size of the transaction log in megabytes.
• Log Space Used (%): The percentage of the log space currently used.
• Status: The current status of the log file (0 indicates the log is available).

Use Case:

This command is particularly useful when managing database transaction log space and ensuring that logs do not fill up unexpectedly. It helps database administrators keep track of log file growth and usage.

Example Query:

DBCC SQLPERF(LOGSPACE);

Typical Output:

Database Name | Log Size (MB) | Log Space Used (%) | Status
----------------------------------------------------------------
MyDatabase    | 1000          | 55.00              | 0