Update sql-data-warehouse-troubleshoot.md

Author: Ron Ortloff

articles/sql-data-warehouse/sql-data-warehouse-troubleshoot.md

@@ -7,7 +7,7 @@ manager: craigg
 ms.service: sql-data-warehouse
 ms.topic: conceptual
 ms.subservice: manage
-ms.date: 7/29/2019
+ms.date: 11/25/2019
 ms.author: kevin
 ms.reviewer: igorstan
 ms.custom: seo-lt-2019
@@ -36,6 +36,7 @@ This article lists common troubleshooting question.
 | Issue                                                        | Resolution                                                   |
 | :----------------------------------------------------------- | :----------------------------------------------------------- |
 | Query performance troubleshooting                            | If you are trying to troubleshoot a particular query, start with [Learning how to monitor your queries][Learning how to monitor your queries]. |
+| TempDB space issues | [Monitor TempDB](sql-data-warehouse-manage-monitor.md#monitor-tempdb) space usage.  Common causes for running out of TempDB space are:<br>- Not enough resources allocated to the query causing data to spill to TempDB.  See [Workload management](resource-classes-for-workload-management.md) <br>- Statistics are missing or out of date causing excessive data movement.  See [Maintaining table statistics][Statistics] for details on how to create statistics<br>- TempDB space is allocated per service level.  [Scaling your SQL Data Warehouse][Scaling your SQL Data Warehouse] to a higher DWU setting allocates more TempDB space.|
 | Poor query performance and plans often is a result of missing statistics | The most common cause of poor performance is lack of statistics on your tables.  See [Maintaining table statistics][Statistics] for details on how to create statistics and why they are critical to your performance. |
 | Low concurrency / queries queued                             | Understanding [Workload management][Workload management] is important in order to understand how to balance memory allocation with concurrency. |
 | How to implement best practices                              | The best place to start to learn ways to improve query performance is [SQL Data Warehouse best practices][SQL Data Warehouse best practices] article. |