7 Monitoring Performance

The Performance Metrics Server provides a dashboard view as well as a detailed view of status changes, statistical data of the servers’ performance. They are represented through statistical charts and real-time data.

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Quick Tour of the Performance Metrics Server Home Page

The Performance Metrics Server uses the metrics service to collect and store instance deployment performance results. The Performance Metrics Server home page allows you to perform these tasks.

When you arrive at the Performance Metrics Server home page, you see all the Oracle Golden Gate processes in their current state. You can click a process to view its performance metrics. You can also access server messages and status change details from this page.

Here’s a general overview of the tasks that you can perform from this page.

Task	Description
Review Messages	Reviewing Messages from the Messages Overview tab.
Review Status Changes	Click the Review Status Changes tab to review changes in status of a server.

Monitoring Server Performance

All the servers and processes of the Microservices Architecture can be monitored at drill-down levels to allow trend monitoring and statistical analysis of data. The Performance Metrics Server offers these detailed views with graphical representations of statistical data in real-time.

The Performance Metrics Server home page presents a dashboard view of all the servers, along with their statuses. If you want to drill down to any of the servers performance, simply click the server to open the reports page for that particular server.

Each server provides an elaborate view of the processes, threads, trail files, database configuration, and so on, depending on the server that you are viewing. The page also provides the option to Pause or Clear the data displayed on the page. To get a snapshot of the trends captured for each of the servers, see the following table:

Metrics Report Tab	Available with Server
Process Performance	Administration Server Distribution Server Performance Metrics Server Receiver Server Extracts Replicats
Thread Performance	Administration Server Distribution Server Performance Metrics Server Receiver Server Extracts Replicats
Status and Configuration	Administration Server Distribution Server Performance Metrics Server Receiver Server Extracts Replicats
Server Statistics	Distribution Server Performance Metrics Server
Trail Files	Extracts Replicats
Database Statistics	Extracts Replicats
Procedure Statistics	Extracts Replicats
Cache Statistics	Extracts
Queue Statistics	Extracts

Reviewing Messages

Messages from the servers are displayed in Performance Metrics server home page.

To review the messages sent or received, do the following:

1. From the Service Manager, click Performance Metrics Server.
   The Performance Metrics Server Overview page is displayed.
2. Click the Messages Overview tab (if it’s not already selected) to see a drill down into all the server messages.

   Scroll through the list of messages or search for a specific message by entering the text in the message.

3. Click Refresh to get a synchronized real-time list of messages before you start searching. You can also change the page size to view more or fewer messages.

Review Status Changes

Real-time status changes to servers can be monitored from the Performance Metrics Server Status Changes Overview tab.

Status change messages show the date, process name, and its status, which could be running, starting, stopped, or killed.

To view status changes, click Performance Metrics Server from the Service Manager home page, and then click the Status Changes Overview tab. A list of status change messages from the server appears.

If you are searching for specific messages, you can use the search but make sure you click Refresh before you search to ensure that you get the updated status for servers.

Note that the search messages appear in different colors to differentiate critical and informational messages.

How to Purge the Datastore

You can change the datastore retention and purge it from the Performance Metrics Server Monitoring Commands tab.

To view status changes, click Performance Metrics Server from the Service Manager home page, and then click the Monitoring Commands tab.

The current process retention in days displays.

You can enter the number of retention days or use the sliding icon to set the new period from 1 to 365 days, then Execute to activate the purge. The details of the purge displays.