Weblogic 101 for dba, Oracle APACOUC Webinar

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

28. Understand Clustering

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

34. Typical Application Archt.

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