SQL Server Error 25604, Severity 17 signifies that an issue has occurred, causing a problem in the processing or execution of database operations. Severity level 17 indicates resource-related matters, such as server memory allocation failures, disk space constraints, or other environmental problems not typically caused by user input but rather by infrastructure limits or configurations.

This error generally belongs to scenarios where SQL Server cannot fulfill system-level requests due to insufficient resources available at runtime. For instance:

• Memory pressure.
• Lack of storage space.
• Disk I/O bottlenecks.
• Hardware limitations, or defective software installation/configuration might trigger this error.

The impact can range from transaction failures to degraded performance for users interacting with your database system. The root cause is often specific to your environment and needs investigation into logs, metrics, and configuration settings surrounding the server's health.  

Analyze System Resource Usage Start troubleshooting the underlying issue by reviewing your system environment. Check if memory usage is nearing capacity.    

SELECT *
FROM sys.dm_os_memory_clerks;

Verify disk space availability on drives hosting database files (`MDF`, `LDF`) using Windows Explorer/PowerShell commands. Run queries to detect potential bottlenecks impacting CPU load.

SELECT scheduler_id, cpu_time_ms  
FROM sys.dm_os_schedulers
WHERE status = 'VISIBLE ONLINE' AND is_idle = 0;

Review Logs SQL Server traces internal errors extensively via the SQL Server Error Logs (default path). Look specifically for additional information related prior-to incidence.