SQL Server SQL Server Sleeping Session Blocking: Find the Open Transaction
Find why a sleeping SQL Server session blocks queries. Use DMV checks to inspect open transactions, identify the owner, and choose a safe next step.
SQL Server
SQL Server SQL Server Fix 0x851A001A: Database Engine Recovery Handle Failed
Fix SQL Server setup error 0x851A001A. Read ERRORLOG first, check NVMe sector size with fsutil, and apply the supported 4 KB workaround safely.
SQL Server SQL Server 2025 Performance Regression: Query Store Workflow
Queries slower after a SQL Server 2025 upgrade? Separate engine, compatibility, and environment changes, then use Query Store to find and mitigate regressions.
SQL Server Fix SQL Server “SSL Security Error” and Native Error 18
A certificate-first workflow for SQL Server SSL Security Error, untrusted certificate chain failures, and Native Error 18 after driver upgrades.
SQL Server Error 665 – The operating system returned error 665(The requested operation could not be completed due to a file system limitation)
QL Server Error 665 occurs when NTFS hits the 256KB ATTRIBUTE_LIST limit. Learn how to confirm it with fsutil and apply proven fixes and workarounds.
SQL Server SQL Server Error 9002: Fix a Full Transaction Log Safely
Fix SQL Server Error 9002 safely by checking log_reuse_wait_desc, log space, autogrowth, active transactions, backups, HA, and replication.
SQL Server Error 8152 – String or binary data would be truncated
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SQL Server Error: 1205 – Transaction Process ID was deadlocked
Fix SQL Server Error 1205 (Deadlock). Learn how to analyze deadlocks using the System Health session, enable Trace Flag 1222, and read Deadlock Graphs to resolve performance issues.
SQL Server SQL Server Error 18456: Fix Login Failed by State
Fix SQL Server Error 18456 by reading the error-log State code and checking login name, password, disabled status, target database, and authentication mode.
SQL Server SQL Server: Fix “The Target Principal Name Is Incorrect”
Why SQL Server shows “The target principal name is incorrect” during TLS, how to diagnose certificate name mismatches and trust issues, and the safest fixes.