The Last Full-Text Catalog Update (Hours) alert provides the time, in hours, since the last Full-Text Catalog update was performed and beyond which the statistics data is considered outdated.
Since full-text indexes are contained in full-text catalogs, when you create new content or change existing content in a catalog, you must regenerate the full-text index. This, along with inefficient indexes can impact your monitored SQL Server performance.
SQL Diagnostic Manager allows users to optimize full-text catalogs, for details see Monitor Your Full-Text Searches.
Note that this alert is raised based on the diagnostic data collection interval specified in Server Properties.
This alert is for visual indicators in the Desktop Client only. SQL Diagnostic Manager does not send notifications when this alert is triggered.