The Always-On Monitoring repository contains historical availability and metric violations data. This data is maintained for 6 months (default interval). Data older than 6 months is deleted (purged) from the repository.

Data maintenance is controlled by following settings:

• Purge Interval—Determines how often the data is purged from Always-On Monitoring repository.

• Purge Duration—Determines how much data is kept during the purge process.

You can change the purge interval via the update_task command:

$AOM_HOME/scripts/emsctl update_task -task_name=PURGE -run_interval=<the number of minutes between purge runs>

You can change the purge duration via the set_property command:

$AOM_HOME/scripts/emsctl set_property -name=purge.Duration -value=<the number of minutes of data to keep>