Weblogic 101 for dba
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The document provides an overview of Weblogic concepts and administration. It defines key Weblogic terms like domains, admin servers, managed servers, and clusters. It also covers installing and configuring Weblogic, monitoring tools, and managing the application server using the admin console and WLST scripting. The presentation aims to help DBAs understand basic Weblogic architecture and administration.
Weblogic 101 for dba
- 1. Weblogic 101 for DBA Osama Mustafa
- 2. Agenda Basic Concepts – Architecture. Installing WLS & Configuring a Domain. WebLogic & Java EE Compatibility. Managing WebLogic.
- 3. Who Am I ? Founder/CEO for Gurus Solutions company. Leader & Director for JAOUG. Oracle ACE Director. Certified OCP,OCE,OCS 10g,11g Certified Ethical hacker / LPT Sun / Linux Certified Author Of Oracle Penetration testing book, Now Working on 2nd one. Presenter & Contributor in Oracle Community . Published Articles in different Magazine. Blogger.
- 4. Basic Concepts – Architecture.
- 5. Weblogic concept • Domains • Server / Admin Server • Managed Server. • Node Manager • Cluster • Machine
- 7. Domain Domain ◦ Grouping of config/resources for an environment ◦ Has one set of administrators/security privileges ◦ Supports one major release of WebLogic at a time ◦ Is run in either ‘Production’ or ‘Development’ mode Consists of o Server o Cluster
- 8. Server • Server is where we : • Deploy Enterprise Applications or Web Applications. • Create JDBC Resources. • Create JMS Resources. • Two Weblogic Server type: • Admin Server • Managed Server
- 9. Admin Server • Only ONE per domain. • Controls start and stop of other servers in the Domain. • Manages the creation of JDBC, JMS and other resources. • Manages the deployment to servers in the domain. • In development we use Admin Server for Deployment and Testing. This is usually done via the Integrated WebLogic instance installed within JDeveloper.
- 10. Managed Server • Managed Server is an instance of WebLogic Server Managed by an Admin Server. • Managed Servers in a Domain are Independent of each other, in every aspect. • Applications Deployed in a Managed Server do not share any resources, including JDBC and JMS Connections and Connection Factories. • Configuration changes are send over to the Managed Server from the Admin Server.
- 11. Managed Server
- 12. Node Manager • Process to Start/Stop Managed Server instance on a Physical Machine. • Connect to Admin Server and starts/stops WebLogic instance based • Independent of Domain • Default port 5556. • Check the port using netstat –anp | grep port#.
- 15. Weblogic Installation • Install JVM Depend on version. • 2. Install a Middleware Home and WebLogic • 3. Configure a Domain Note: I usually install the JVM and use the generic .jar installer (i.e. same for all platforms) rather than using installer bundled with a JVM
- 16. Note about Install JVM Sun HotSpot or JRockit (being merged in Java7/8), or JVM for your platform (e.g. IBM or HP). JRockit specific: Don’t install demos & samples/source code You probably don’t want JRockit as the public JRE
- 17. Install Weblogic Command line :- java -jar wls_version_generic.jar Don’t forget WLS has PSUs (e.g. 10.3.6.0.3) and quarterly SPUs (fka CPUs) See the screens
- 22. Configure a Domain You use the config wizard to create domains ◦ $WL_HOME/common/bin/config.sh (.cmd) ◦ there are several other methods too
- 27. Weblogic Cluster • Scalability • Load Balance • Even distribution of jobs • Multiple copies of an object that can do a particular job must be available • High-Availability • Failover • When a object processing a job becomes unavailable, a copy of the object elsewhere takes over and finishes the job
- 29. Stand Alone High Availability Another feature in Cluster Called Scalability Node with OFM No System Active Passive Active Active Active Active Active Active
- 30. Load Balancer Active FMW Active FMW Domain, Database - Oracle OHS - Clients Active OFM Passive Domain, Database VIP
- 31. Active-Passive (Bad & Good) • Cost. • Easier configuration & administration. • Provide availability for Application. • No Additional H.W Cost ( Two Nodes ). • Failover Time. • Second node will not be used. • Does not scale
- 32. Active-Active ( Bad & Good) Not all the application load is hosted by a single server. No Time For Failover. Flexibility to scale up. Load balancers improve manageability by routing application deployment and system configuration requests to the most available node. • Cost • complexity mean more maintaining and administering
- 33. WebLogic & Java EE Compatibility • WebLogic 11g - JEE 5 Certified • WebLogic 12c - JEE 6 Certified • Java EE 6 • JSP 2.1, JSF 2.0 • EJB 3.1, JPA 2.0 • Context and Dependency Injection • Restful Web Services • Weblogic 12cR2 - Java SE Development Kit 8 • Always check certification martix
- 35. Examples :- #EMC12c Installer sets up WebLogic for you Some options to customise to be consistent with your environment
- 39. Quick Demo Live
- 40. Managing Weblogic Admin console is usually starting point Processes to check java for admin server & managed server Admin & Managed server logs are under: DOMAIN_HOME/servers/<name>/logs
- 41. Monitoring Tools Pure WebLogic / Admin Console Weblogic Enterprise manager Enterprise manager 12c.
- 42. Quick Demo Live Processes Log files Monitoring Dashboard
- 43. WebLogic Scripting Tool / wlst interface that system administrators and operators use to monitor and manage WebLogic Server instances and domains. WLST scripting environment is based on the Java scripting interpreter, Jython. use common features of interpreted languages, including local variables, conditional variables, and flow control statements WebLogic Server developers and administrators can extend the WebLogic scripting language to suit their environmental needs
- 44. Benefits of Wlst Retrieve domain configuration and runtime information. Edit the domain configuration and persist the changes in the domain's configuration files. Automate domain configuration tasks and application deployment. Control and manage the server life cycle. Access the Node Manager and start, stop, and suspend server instances remotely or locally, without requiring the presence of a running Administration Server. Can be used Online and offline.
- 45. Summary WebLogic is a java application server. All WLS processes run on a JVM. Middleware home is static; domain home contains config and logs. WLS Console is usually first point of contact (though don’t forget about WLST for automation). OEM 12c runs on WebLogic but the installer now does the WLS set up work for you
- 46. Twitter : @OsamaOracle My Blog : Osamamustafa.blogspot.com Linkedin :- https://jo.linkedin.com/in/osamamustafa Or Google Me : Osama Mustafa Oracle