SQL Server Error 1121, Severity 17 Message: 'Could not allocate a new page for database because of insufficient disk space in filegroup. Create the necessary space by dropping objects in the filegroup, adding additional files to the filegroup, or setting autogrowth on for existing files in the filegroup.'
This error occurs when SQL Server is unable to allocate more space in a particular filegroup due to either:
- The maximum size limit of a database file/filegroup being reached, or;
- Improper configuration settings (e.g., disabling autogrowth) preventing dynamic allocation.
The severity level of 17 indicates that this issue arises from an environmental or resource problem outside SQL Server's control—typically related to disk capacity.
Step-by-Step Guidance for Resolving SQL Server Error 1121
Immediate Diagnosis Run diagnostic commands/T-SQL queries to identify which part of the environment is causing the out-of-space issue. Check current usage and available free space within each file.
EXEC sp_helpdb 'YourDatabaseName';
Query details about all database files.
SELECT name AS FileLogicalName, type_desc AS FileType, physical_name AS PhysicalPath, size/128.0 AS CurrentSizeMB, FILEPROPERTY(name,'SpaceUsed')/128.0 AS SpaceUsedMB, (size - FILEPROPERTY(name,'SpaceUsed'))/128.0 AS FreeSpaceMB FROM sys.database_files;