app/dependencies.py

@@ -800,6 +800,14 @@ def handle_db_errors(func):
                 logger.info(f"Database rollback successful for {func_name}")
             except Exception as rollback_error:
                 logger.error(f"Rollback failed in {func_name}: {rollback_error}")
+            finally:
+                try:
+                    db.close()
+                    logger.info(f"Database connection closed for {func_name}")
+                except Exception as close_error:
+                    logger.error(
+                        f"Error closing database connection in {func_name}: {close_error}"
+                    )
 
             raise HTTPException(
                 status_code=500, detail=f"Database error in {func_name}: {str(e)}"