How to fix Error 5207 on Windows Server 2025 / Windows 11

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Troubleshooting Guide: SQL Server Error 5207

Why This Error Happens

Error 5207 occurs when SQL Server’s internal defragmentation or shrink process attempts to relocate a page that belongs to a work table, which is a temporary internal structure used for intermediate query results (such as sorts, hash joins, or spools). Because work tables are transient and tied to the active execution of a query, they cannot be moved by operations like DBCC SHRINKFILE or DBCC SHRINKDATABASE while they are in use. This typically surfaces when a shrink operation runs concurrently with heavy query activity in tempdb, where most work tables reside.

Step-by-Step Resolution Guide

Step 1: Identify the Operation Triggering the Error

  • Check the SQL Server error log for the full message context, including the database name and file ID associated with the page.
  • Run SELECT * FROM sys.dm_exec_requests WHERE command LIKE 'DBCC%' to confirm if a shrink operation is currently active.
  • Note whether the affected database is tempdb, since work tables almost always live there.

Step 2: Avoid Shrinking Databases/TempDB During Active Workloads

  • Pause or reschedule any DBCC SHRINKFILE or DBCC SHRINKDATABASE jobs to a maintenance window with low query concurrency.
  • Identify and temporarily suspend heavy batch jobs, ETL processes, or reporting queries that generate large sort/hash operations.
  • Use sp_who2 or sys.dm_exec_sessions to identify sessions consuming significant tempdb space.

Step 3: Restart the Shrink Operation After Workload Quiesces

  • Confirm no long-running queries are active using SELECT * FROM sys.dm_exec_requests WHERE status = 'running'.
  • Re-issue the shrink command, e.g., DBCC SHRINKFILE (tempdev, 500).
  • If the error persists, restart the SQL Server service during a scheduled downtime window to clear all work tables in tempdb, since they do not persist across restarts.

Step 4: Reconfigure TempDB Sizing to Reduce Future Shrink Needs

  • Pre-size tempdb data and log files appropriately using ALTER DATABASE tempdb MODIFY FILE (NAME = tempdev, SIZE = 8192MB) to avoid frequent shrink/grow cycles.
  • Distribute tempdb across multiple equally-sized data files (one per CPU core, up to 8) to reduce contention and fragmentation.
  • Disable or limit scheduled shrink jobs in SQL Server Agent that run against tempdb.

Alternative or Verification Steps

  • Verify the fix by re-running the shrink operation during a quiet period and confirming it completes without Error 5207 in the SQL Server error log.
  • As an alternative, if shrinking tempdb is unavoidable during active hours, restart the SQL Server service instead—this instantly clears all work tables and resets tempdb to its configured size without requiring an online shrink.