SQL Server Error 25607 Severity 17 in SQL Server is an indication that the server has encountered a problem with resource allocation, which typically involves insufficient memory or other system resources necessary to complete operations. The severity level of 17 indicates that this error pertains to problems outside of the direct execution of T-SQL commands but within environmental aspects, such as hardware constraints.  

This error often arises when SQL Server cannot allocate sufficient memory needed for certain processes and tasks. While not directly resulting from bad coding practices, this error signals issues related to configurations or limitations imposed by your current setup.  

Guidance for Resolving Error 25607

• Analyze Memory Usage: Check how much memory SQL Server is currently utilizing versus what's available on your machine. Utilize tools like Performance Monitor (PerfMon) or Dynamic Management Views (DMVs) to track existing workloads.  
  
  
• Configuration Adjustment: Review settings pertaining to `max server memory`. Ensure it's set appropriately relative to total system resources. Consider increasing physical RAM if you consistently encounter such errors under load conditions.  
  
  
• Query Optimization: Analyze queries possibly demanding extensive resources using `sys.dm_exec_query_stats` DMV.      

SELECT TOP(10)
qs.execution_count, qs.total_worker_time / qs.execution_count AS AvgCPUTime,
SUBSTRING(qt.text,qs.statement_start_offset/2 +1 , (CASE WHEN qs.statement_end_offset =-1 THEN LEN(CONVERT(NVARCHAR(MAX), qt.text)) *2 ELSE qs.statement_end_offset END -qs.statement_start_offset)/2 +1)
FROM sys.dm_exec_query_stats AS qs        
CROSS APPLY sys.dm_exec_sql_text(qs.sql_handle) AS qt        
ORDER BY AvgCPUTime DESC; 

• Review Indexes and Statistics: Make sure that indexes are tuned properly; outdated statistics may lead SQL querying operations astray needing more compute power than necessary.
  
  
• Check Other System Bottlenecks: Investigate disk IO capacity; determine if drives can handle planned workload efficiently without excess waiting times.
  
  
• Monitor Blocking and Deadlocks: Use monitor scripts periodically assess potential deadlocking scenarios. Script for monitoring locks indicating possible contention sources.   

SELECT blocking_session_id AS BlockerSessionID,
wait_duration_ms /1000 as WaitTimeSec, resource_description
FROM sys.dm_tran_locks
WHERE blocking_session_id >0
ORDER BY WaitTimesec desc; 

Engage SQLaaS Support Team, if you're continually facing similar difficulties despite following standard guidelines.