SYMPTOM
Data in tables "IS_SESSION_MONITOR" and "RT_IS_JOB_MONITOR" are not saved for more than one day in the Strategy Enterprise Manager warehouse. For example, on 03/27/2015 will only see the data of 03/26/2015 & 03/27/2015, while all the data before 03/26/2015 is missing.
CAUSE
"IS_SESSION_MONITOR" and "RT_IS_JOB_MONITOR" are "Real-time" views, which only record the recent, near up-to-the-minute information about the server activity. In other words, these views only show data which has not been moved into the Strategy Enterprise Manager Warehouse fact tables.
For example, if the data load schedule is set as 12:00 PM every day, then if looking into these views before this time point on 03/27/2015, probably the data before 12:00 PM on 03/27/2015 and the date after 12:00PM on 03/26/2015 will display.
ACTION
This is working as designed and there is no action to take.
