By default, error streams created in Studio are output. However, if
you configure error streams as local, or create them directly in CCL (where the default is
local), you can change them back to output to make them visible to external subscribers. This
makes real-time monitoring of the error streams possible.
In production mode, project monitoring may be performed externally.
- In the Visual editor, open the project.
- To enable real-time monitoring of errors encountered by the project, click the
Type icon in the Error Stream to toggle it
from OUTPUT to LOCAL.
- To enable ad hoc SQL queries, add a window (for example, ErrorState) to the project, downstream from the error stream.
The ErrorState window preserves the state of the error stream so it can
be queried using the esp_query
utility.