Mssql: Failed To Fetch Info Data (or No Data For 30m) Official

| Category | Specific Cause | |----------|----------------| | | Network firewall dropping long‑living connections; DNS resolution issues; Azure SQL Gateway timeout. | | Query Performance | Blocking queries, deadlocks, or an inefficient sys.dm_os_performance_counters query that exceeds 30 min. | | Resource Exhaustion | TempDB full, transaction log full, or memory pressure stalling system DMV responses. | | Monitoring Agent Behavior | Hardcoded 30‑min socket timeout; missing retry logic; synchronous fetch from a busy sys.dm_exec_requests . | | SQL Server Configuration | remote query timeout set to 0 (unlimited) causing indefinite wait; query wait high. | | External Dependencies | Anti‑virus scanning .mdf/.ldf files; backup job holding shared locks on system tables. |

Analysis and Mitigation of “MSSQL: Failed to Fetch Info Data (or No Data for 30m)” mssql: failed to fetch info data (or no data for 30m)

The error message “MSSQL: failed to fetch info data (or no data for 30m)” typically appears in monitoring systems, ETL pipelines, or application logs when a client attempts to retrieve metadata, status, or time‑series information from a Microsoft SQL Server instance but receives no response within a 30‑minute timeout window. This paper outlines the common root causes, diagnostic steps, and preventive measures. | | Monitoring Agent Behavior | Hardcoded 30‑min