DB Time in AWR data can be considered as the heartbeat of database.
We can graph DB Time for detecting database performance issue.
The following example describes how to retrieve DB Time for database, and then display data in graph using MS Excel.
The list of cases include:
First, we retrieve AWR data for DB Time.
Secondly, we copy/paste these columns to MS Excel spreedsheet, and create line graph.
We need to check the time frame when DB Time spikes to see if there is potential database performance issue.