STL views for logging - Amazon Redshift
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STL views for logging

STL system views are generated from Amazon Redshift log files to provide a history of the system.

These files reside on every node in the data warehouse cluster. The STL views take the information from the logs and format them into usable views for system administrators.

Log retention – STL system views retain seven days of log history. Log retention is guaranteed for all cluster sizes and node types, and it isn't affected by changes in cluster workload. Log retention also isn't affected by cluster status, such as when the cluster is paused. You have less than seven days of log history only in the case where the cluster is new. Retaining logs doesn't require any customer action, but if you want to store log data for more than 7 days, you have to periodically copy it to other tables or unload it to Amazon S3.