The document provides an overview of WebLogic Server (WLS) architecture, installation, and management, focusing on components such as domains, admin servers, and managed servers. It discusses installation steps including JVM setup, domain configuration, and the use of Oracle Enterprise Manager (OEM) for management. The document also emphasizes the importance of monitoring and automation through tools like the WebLogic Scripting Tool (WLST).

1. WebLogic for DBAs
Simon Haslam
Veriton Limited

2. Simon Haslam / Veriton
Consultant & Oracle Partner,
established for 16 years
I mainly work on the middle tier of
demanding web & contact-centre applications:
architecture planning to installation
to troubleshooting (and most things
in between!)

3. Agenda
WebLogic Architecture and Components
Installing WLS & Configuring a Domain
Oracle Enterprise Manager 12c
Managing WebLogic

4. Recap.
HTTP(S)
HTTP(S)
used
Web Server
to return
HTTP(S), AJP etc HTML
Application Server
e.g. SQL*Net
Database etc

5. Key WebLogic Terms
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
Admin Server
◦ Only one per domain
◦ Runs the Admin Console
Managed Server
◦ The server(s)/JVM that run your app(s)
◦ Cluster(s) distribute your app over several MS
Node Manager
◦ Java program that (re)starts your servers (MS & AS)

6. Example Architecture
Note: with 64 bit OS &
VMs it’s becoming
common to have one
app WebLogic server
process per host
requests webserver
plug-in
admin
console
admin A node manager can
server manage multiple
managed domains, though this
may not be desirable
server
domain node
host manager
END

7. Component Notes
A domain only ever has one Admin Server
◦ it looks after the master config.xml
The Admin Server doesn’t actually need to be running all
the time
◦ Managed Server Independence (MSI) – the MS can start up/run on
its own
◦ AS primarily used for changing configuration or deploying apps
◦ BUT… more reliance post-Oracle on admin apps on AS
You want Node Manager running all the time to stop/start
WebLogic servers

8. Quick Demo
WebLogic Console
◦ machines
◦ servers
◦ data sources
◦ deployed applications

9. Typical Enterprise Application
Load Balancers
Web Server Web Server
WebLogic WebLogic
App App
Managed Server Cluster Managed Server
Oracle Database Web
Services
Services Layer

10. Agenda
WebLogic Architecture and Components
Installing WLS & Configuring a Domain
Oracle Enterprise Manager – 11g & 12c
Managing WebLogic

11. Install
Middleware Home
◦ ‘binaries’ which may include various Oracle layered products
(such as SOA Suite or Forms)
◦ read-only*
Domain Home
◦ configuration and logs
◦ can live happily outside the middleware home: nice!
◦ one middleware home / WebLogic installation can be used to
run several separate domains
* a few parts of Oracle ignore this

12. WebLogic Installation Steps
1. Install JVM
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

13. 1) 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

14. 2) Install WebLogic
E.g.
java -jar wls1036_generic.jar
silent_xml=wls1036.rsp]
[-mode=silent -silent_xml=wls1036.rsp]
◦ On small test environments without much /tmp you can use:
-Djava.io.tmpdir=/softlib/tmp
◦ Don’t forget WLS has PSUs (e.g. 10.3.6.0.3) and quarterly SPUs (fka
CPUs)
Only most relevant screens follow…

15. Installation

18. 3) Configure a Domain
You use the config wizard to create domains
◦ $WL_HOME/common/bin/config.sh (.cmd)
◦ there are several other methods too
There’s a good chance your app will configure a
domain for you (though you may wish to standardise)
Only most relevant screens follow…

23. Agenda
WebLogic Architecture and Components
Installing WLS & Configuring a Domain
Oracle Enterprise Manager 12c
Managing WebLogic

24. Enterprise Manager GC/CC
Mostly a big java application
Runs an Oracle Management Service (OMS) which
OEM Agents (a java process running on each remote
machine you want to manage) connect to over HTTPS
Has a web application that provides the main EM
console (and EM CLI)

25. EM Cloud Control
Fri 11:30
Agent
Web Server
Oracle
Management Administrator
Service Managed Server
Node Admin
Manager Server
Software My Oracle
Repository Database Library Support
Services Layer

26. (OEM Grid Control 11g)
11g GC was first OEM release to use WebLogic instead of
OC4J
You had to install WebLogic yourself first, then use
SmartUpdate (BSU) to apply WDJ7 set of patches
◦ online or offline
◦ see http://www.veriton.co.uk/roller/fmw/entry/offline_patching_of_weblogic_server
If you’re installing now go straight to EM 12cR2 ☺

28. OEM Cloud Control 12c
Installer sets up WebLogic for you
Some options to customise to be consistent with your
environment

31. Demo
Installation (JDK, WebLogic)
Domain creation
Startup

32. Agenda
WebLogic Architecture and Components
Installing WLS & Configuring a Domain
Oracle Enterprise Manager 12c
Managing WebLogic

34. Managing WebLogic
Admin console is usually starting point
Processes to check
◦ java for admin server & managed server
◦ java for nm
Node manager (only use java version)

35. Admin & Managed server logs are under:
◦ DOMAIN_HOME/servers/<name>/logs
◦ Accessible through console too
Monitoring dashboard

36. Monitoring Toolset
Pure WebLogic
◦ WebLogic Admin Console
WebLogic plus middleware components (single
system)
◦ OEM Fusion Middleware Control
All products
◦ OEM 12c Cloud Control

37. Demo
Processes
Log files
Monitoring Dashboard

38. Check out WebLogic Scripting Tool
wlst.sh
◦ sets environment
Initializing WebLogic Scripting Tool (WLST) ...
Welcome to WebLogic Server Administration Scripting Shell
Type help() for help on available commands
wls:/offline> exit()

39. WLST Example
Fri 15:45
def create_ds(DS_NAME, DS_PARAMS, TARGETS, JNDI, DB_USER, DB_PASS,
DB_SERVICE, DB_HOSTS, ONS_HOSTS):
cd('/')
cmo.createJDBCSystemResource(DS_NAME)
cd('/JDBCSystemResources/'+DS_NAME+'/JDBCResource/'+DS_NAME)
cmo.setName(DS_NAME)
cd('JDBCDataSourceParams/'+DS_NAME)
set('JNDINames',jarray.array([String(JNDI)], String))
...etc...

40. Agenda
WebLogic Architecture and Components
Installing WLS & Configuring a Domain
Oracle Enterprise Manager 12c
Managing WebLogic

42. WebLogic is a java application server
◦ typically delivers HTML over HTTP(S)
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

43. Thanks for listening!
Twitter: @simon_haslam
Oracle Fusion Middleware Architecture & Admin blog:
http://simonhaslam.co.uk
Fri 11:30
Fri 15:45