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WebLogic Performance Monitoring - OFM Canberra July 2014
- 1. Copyright © 2014 Oracle and/or its affiliates. All rights reserved. | WebLogic Performance Monitoring Joel Nation Solutions Architect Oracle Canberra Oracle Confidential – Internal/Restricted/Highly Restricted
- 2. Copyright © 2014 Oracle and/or its affiliates. All rights reserved. | Monitoring WebLogic • How to monitor what’s going on in WebLogic? • Use WLDF (WebLogic Diagnostic Framework) – Diagnose runtime problems with WebLogic environments – Provides a watch/notification system for issues – Enables you to dump a diagnostic image to disk (to send to support) – Integrates with JRockit Flight Recorder to capture WebLogic events for offline viewing Oracle Confidential – Internal/Restricted/Highly Restricted 2
- 3. Copyright © 2014 Oracle and/or its affiliates. All rights reserved. | Architecture Oracle Confidential – Internal/Restricted/Highly Restricted 3 Log File Event Collector Mbean Property Harvester Code Instrumentor Archiver Watcher JRockit Flight Recorder Buffer Accessor Notifier JRockit Mission Control SNMP, JMS, Email WLST, JMX, Dashboard Capture Process Expose
- 4. Copyright © 2014 Oracle and/or its affiliates. All rights reserved. | How does it help me? • Allow you to monitor and notify on WebLogic internal metrics that may be causing problems. Common examples include: • JDBC Connection pool metrics like: – Average/Max Connection Pool Wait Time – Average/Max Number in Use – Prepared Statement Cache Hit/Miss Ratio • JMS Server Metrics like: – Number of Messages – Number of consumers >= 1 Oracle Confidential – Internal/Restricted/Highly Restricted 4
- 5. Copyright © 2014 Oracle and/or its affiliates. All rights reserved. | Diagnostic System Module • A DSM is a configuration container for: – Harvester: for collecting metrics from Mbeans – Watches and Notifications: conditions to watch for and the notifications to take – Instrumentation: Add diagnostics code to WebLogic instances and the applications running them • Create through the Admin console or WLST • Can target multiple servers and clusters • Only one DSM active per server Oracle Confidential – Internal/Restricted/Highly Restricted 5
- 6. Copyright © 2014 Oracle and/or its affiliates. All rights reserved. | Collecting Metrics • The Harvester is used to collect data from Mbeans – Only simple type attributes can be harvested • Metrics are collected over a sampling period – Once collected can be accessed via the dashboard, JMX etc Oracle Confidential – Internal/Restricted/Highly Restricted 6
- 7. Copyright © 2014 Oracle and/or its affiliates. All rights reserved. | Dashboard Oracle Confidential – Internal/Restricted/Highly Restricted 7
- 8. Copyright © 2014 Oracle and/or its affiliates. All rights reserved. | Demo 1: WebLogic Dashboard Oracle Confidential – Internal/Restricted/Highly Restricted 8
- 9. Copyright © 2014 Oracle and/or its affiliates. All rights reserved. | Watches & Notifications • A Watch identifies a situation that you want to trap for monitoring • There are 3 types: – Harvester: monitor Mbeans – Log: monitor the log – Instrumentation: monitor events generated by WLDF • A Notification is an action taken when a watch is triggered. WLDF supports the following: – SMTP Notification: Send an email – JMS Notification: Send a message to a JMS queue – SNMP Notification: Raise an SNMP trap – Image Notification: Dump a diagnostic image to disc – JMX Notification: Raise a JMX notfication Oracle Confidential – Internal/Restricted/Highly Restricted 9
- 10. Copyright © 2014 Oracle and/or its affiliates. All rights reserved. | Demo 2: Create a Watch Oracle Confidential – Internal/Restricted/Highly Restricted 10
- 11. Copyright © 2014 Oracle and/or its affiliates. All rights reserved. | 3rd Party Integration • Enterprise Manager provides in-built SNMP monitoring to WebLogic • You can integrate with any monitoring tool that can accept SNMP Traps. Eg: Nagios Oracle Confidential – Internal/Restricted/Highly Restricted 11 WLS SNMP Alert Run Nagios Cmd SNMP Trap Handler
- 12. Copyright © 2014 Oracle and/or its affiliates. All rights reserved. | Demo 3: Nagios Integration Oracle Confidential – Internal/Restricted/Highly Restricted 12
- 13. Copyright © 2014 Oracle and/or its affiliates. All rights reserved. | Going further... • The Harvester can harvest any MBean – Even from your application! – Expose metrics from Java as MBeans that WLDF can use in a DSM • The DSM can also output Diagnostic Images – You can create a watch to output this automatically Oracle Confidential – Internal/Restricted/Highly Restricted 13
- 14. Copyright © 2014 Oracle and/or its affiliates. All rights reserved. | More Resources • WLDF 11g Documentation: – http://docs.oracle.com/cd/E17904_01/web.1111/e13714/toc.htm • WLDF 12c Documentation: – http://docs.oracle.com/cd/E24329_01/web.1211/e24426/toc.htm • Our Blog – Detailed WebLogic-Nagios post to added soon – http://ofmcanberra.wordpress.com Oracle Confidential – Internal/Restricted/Highly Restricted 14
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