Tarun,
The metrics that generate the reports are all stored in the database configured with the Registry.
The VSE collects the details in memory and then write out the details to the database every 5 minutes.
The VSE DB tables are:
VSE_METRICS_EVENTS
VSE_METRICS_PERIODICS
VSE_METRICS_TXN_COUNTS
The following properties are used to control the metrics collection in LISA Virtual Services Environment servers. The values here are the defaults.
lisa.vse.metrics.collect=true
Main property to turn on the overall metrics collection (true) or off (false):
lisa.vse.metrics.sample.interval=5m
This property controls how often transaction rate and response times are sampled.
lisa.vse.metrics.delete.cycle=1h
lisa.vse.metrics.delete.age=30d
These properties control how often old metric data is scanned for and deleted, and what is considered old.
It should be fine to read the data from the database, but any direct writes to the database will place the installation using that database out of support.
Hope it helps.
Heloisa