638 - DataActivityLargeColumnThreshold

Column {0} is returning a large amount of data: {1}. Consider using the Custom Query activity to exclude this column.

Description

Large values (such as large text segments, images, byte array columns) that are returned by the Custom Query and Query Data activities can cause memory fragmentation in the Workflow Server and rapidly increase database persistence sizes. These performance issues may occur if tens of thousands of workflows instances with these large values run between Workflow Server restarts.