Database

Database graphs, available to view on the ServiceNow Performance homepage, display metrics for various database operations, for example, insertions and deletions. They also display a current count of database connections for the selected ServiceNow instance.

If you are running on a single node, which is typical, the graphs show everything. All the traffic shown in the graphs is specific to your cluster node or instance. If you are looking at the database graph for your Discovery node, it does not include traffic for your UI node or vice versa.

If you have the admin role, you can review performance metrics. To view database metrics on the ServiceNow Performance homepage:

1. In the Graph Set list, select Database.
2. In the Monitorable Items list, select an instance.
3. In the Timespan list, select a time period.

For details on using the graph and display controls on the ServiceNow Performance homepage, see Platform performance metrics.

Figure 1. Database performance graphs

• Database Throughput: Displays the count (per minute) for each type of database operation (inserts, deletes, and so on) over time.
• Database Response: Displays the response time (in milliseconds) for each type of database operation.
• DB Connection Use: Shows how many connections this instance has open to the database. View the maximum, median, and minimum number of database connections in use by the selected node.
• Replication Throughput: Measures the difference in the data (delta) between the production instance and the replicated instance as user activity changes the database. Replication is the process whereby an entire instance is replicated on a second machine for failover protection.

  Customer Service and Support uses this information to monitor the progress of replicating a customer instance.