By Editorial Team
Publication Date: 2026-11-12 15:30:00
Microsoft said Windows updates released since the October 2026 Patch Tuesday can cause SQL Server performance and stability problems by leaving database connections open after server queries finish.
The issue affects SQL Server linked-server queries that use OLE DB providers to connect with external databases, including Oracle and PostgreSQL, Microsoft said in an update to its Windows release health dashboard.
Administrators may see a growing number of open connections to external databases even after the associated linked-server queries have stopped running. The connections accumulate rather than closing and can degrade server performance over time.
Administrators can manually close the connections or restart the SQL…
