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This document provides an overview of Oracle WebLogic and how it compares to OC4J. It discusses the key WebLogic concepts like domains, administration servers, managed servers, and clusters. It also covers the various administration tools for WebLogic like the admin console and WLST scripting. The document demonstrates how to use WLST to start NodeManager and monitor server states. It provides tips on tuning the JVM and changing WebLogic ports. The agenda concludes with a hands-on session on installing and configuring a WebLogic domain.

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Oracle WebLogic: The next Big Thing for Apps DBAs Sudeep Raj, Team Lead March, 2013
About Me Oracle Apps DBA/Team Lead at Pythian Group Inc. 10 Years of IT experience OCP Certified @sudeeporcl http://www.linkedin.com/in/sudeepraj1
Agenda Overview of WebLogic OC4J v/s WebLogic Understanding the WebLogic Terminologies and architecture Exploring Administration Tools WLST Scripting Tool JVM Tuning Tips and How-Tos Hands on Session with WebLogic 12c
Evolution of WebLogic WebLogic Inc started in 1995 credited with creating the first J2EE application server, the WebLogic Application Server. BEA Systems Acquired WebLogic Inc in 1998 Oracle Acquired BEA Systems in 2008
What is WebLogic?
OC4J v/s WeLogic Oracle Containers for Java WebLogic Multiple JVMs One JVM Runs on wide range of ports Runs on a single port No HTTP listener Configured with HTTP listener Web Server is mandatory Not Mandatory Application Server cluster topology WebLogic Server domain OC4J groups WebLogic Server clusters Managed by OPMN Not managed by OPMN Oracle Enterprise Manager Application Oracle WebLogic Server Administration Server Control Console
OC4J v/s WeLogic
OC4J v/s WeLogic
Understanding the Terminologies WebLogic Server Instance WebLogic Server Domain Administration Server Managed Server WebLogic Server Cluster Machine Node Manager
WebLogic Server Instance WebLogic Server Instance is a Java Virtual Machine process runs Java code. Each domain must have one server instance One instance serves as Admin Server and rest as Managed Servers. Typical development environment is of one WebLogic instance
WebLogic Server Domain A Domain is a logically related group of WebLogic Server resources that you manage as a unit. A domain provides one point of administration and each domain must create its own set of resources. A domain consists of one of more WebLogic server instances A domain lets you easily deploy applications across multiple WebLogic Server instances WebLogic Server stores the configuration information of a domain in config.xml file
Administration Server Designed for managing the domain rather than running applications. One-to-one relationship between domains and Admin Server Manages the domain configuration Admin Server hosts the Administration Console used for configuring, monitoring and managing a domain In Production environment best practice is to separate the application work with administrative work. You can firewall the Admin Server separately to avoid external client access
Managed Server Any additional servers you create after the creation of default Admin Server are called Managed Servers Contacts Admin Server only during the startup to get configuration and deployment settings Managed servers operates independent of the Admin Server after the startup Recommended to deploy applications to Managed Servers
WebLogic Server Cluster Consists of multiple managed servers that runs simultaneously WebLogic Cluster provide increase reliability, scalability through load distribution and high availability Version of WebLogic server for all Managed Server instance in a cluster should be same A Cluster always belongs to a single WebLogic Server Domain. Each machine must have a static IP address and must not assign IP addresses dynamically to a cluster member though DHCP
Node Manager Purely optional, lets you remotely manage both Admin and Managed Servers within that domain. Oracle recommends to install Node Manager on each of the machines that hosts Managed Server Each installation of WebLogic Server comes with Node Manager When you start or stop a Managed Server through Admin console, the admin server first access Node Manager, which in turn performs the actual task. Is available as either a Java-based or a script-based process
Machine In WebLogic context, Machine is a logical representation of computer that hosts one or more WebLogic server instances. Runs a supported operating system platform A Machine could be a physical or virtual server that hosts Admin or Managed Server
Administration Tools Admin console WebLogic Scripting Tool Configuration Wizard Configuration Template Builder Node Manager
How does WebLogic Startup script works? Startup sequence Start $DOMAIN_HOME/startWebLogic.sh Calls $DOMAIN_HOME/bin/startWebLogic.sh Calls $DOMAIN_HOME/bin/bin/setDomainEnv.sh Calls $WL_HOME/common/bin/commEnv.sh setDomainEnv.sh will set other memory parameters Returns to $DOMAIN_HOME/bin/startWebLogic.sh $DOMAIN_HOME/bin/startWebLogic.sh organizes the parameters and calls java to startup the JVM and start Weblogic Server Boot Identity File Lock file $DOMAIN_HOME/servers/<ServerName>/tmp/<ServerName>.lok
Invoking WLST Java weblogic.WLST Source the environment . ./setWLSEnv.sh which is under $MW_HOME/wlserver_10.3/server/bin [oracle@srfm bin]$ java weblogic.WLST Initializing WebLogic Scripting Tool (WLST) ... Welcome to WebLogic Server Administration Scripting Shell Type help() for help on available commands wls:/offline>
Starting NodeManager via WLST wls:/offline> startNodeManager(verbose='true',NodeManagerHome='/u01/app/middleware/wlserver_ 12.1/common/nodemanager', ListenPort=5555', ListenAddress=vmlinux3.lab.com') wls:/offline> nmConnect('weblogic','welcome1','vmlinux3',5555,'pythian_domain','/u01/app/middleware /user_projects/domains/pythian_domain','ssl') Connecting to Node Manager ... Successfully Connected to Node Manager. wls:/nm/pythian_domain> wls:/nm/pythian_domain> nmServerStatus('ManagedServer_1'); RUNNING wls:/nm/pythian_domain> nmServerLog() wls:/nm/pythian_domain> stopNodeManager()
Sample WLST script to monitor Server state.
Sample WLST script to monitor Server state.
How to change port in WebLogic? Option1: Change the port information via WebLogic console. Option 2: Update config.xml, modify listen-port Update ADMIN_URL on startManagedWebLogic.sh, stopWebLogic.sh and stopManagedWebLogic.sh scripts
JVM Tuning Oracle recommends Sun JDK with the HotSpot Client JVM for Development Oracle JRockit JDK for Production due to superior performance JAVA_HOME and JAVA_VENDOR Tuning Java heap size java.lang.OutOfMemoryError <<no stack trace available>> java.lang.OutOfMemoryError <<no stack trace available>> Garbage Collection setDomainEnv.sh >>>
JVM Tuning wls:/pythian_domain/domainRuntime> domainRuntime() wls:/pythian_domain/domainRuntime> cd('ServerRuntimes/AdminServer') wls:/pythian_domain/domainRuntime/ServerRuntimes/AdminServer> cd('JVMRuntime/AdminServer') wls:/pythian_domain/domainRuntime/ServerRuntimes/AdminServer/JVMRuntime/AdminServer> ls() -r-- HeapFreeCurrent 190211496 -r-- HeapFreePercent 72 -r-- HeapSizeCurrent 324927488 -r-- HeapSizeMax 477233152 -r-- JavaVMVendor Sun Microsystems Inc. -r-- JavaVendor Sun Microsystems Inc. -r-- JavaVersion 1.6.0_29 -r-- Name AdminServer -r-- OSName Linux -r-- OSVersion 2.6.18-194.el5 -r-- Type JVMRuntime -r-- Uptime 5341693 -r-x preDeregister Void : wls:/pythian_domain/domainRuntime/ServerRuntimes/AdminServer/JVMRuntime/AdminServer>
How to remove a domain? Make sure services are down Remove domain entry from $MW_HOME/domain-registry.xml Remove entry from nodemanager.domains Delete a domain folder
Hands on Session Install WebLogic 12c on Linux Configure WebLogic Domain Configuring Servers, Machines Cluster Configuration Using Admin console Starting Servers using Node Manager Configuring Data Sources Deploying/Undeploying simple Web Application Exploring important files and folders
Thank you - Q&A

More Related Content

Weblogic

  • 1. Oracle WebLogic: The next Big Thing for Apps DBAs Sudeep Raj, Team Lead March, 2013
  • 2. About Me Oracle Apps DBA/Team Lead at Pythian Group Inc. 10 Years of IT experience OCP Certified @sudeeporcl http://www.linkedin.com/in/sudeepraj1
  • 3. Agenda Overview of WebLogic OC4J v/s WebLogic Understanding the WebLogic Terminologies and architecture Exploring Administration Tools WLST Scripting Tool JVM Tuning Tips and How-Tos Hands on Session with WebLogic 12c
  • 4. Evolution of WebLogic WebLogic Inc started in 1995 credited with creating the first J2EE application server, the WebLogic Application Server. BEA Systems Acquired WebLogic Inc in 1998 Oracle Acquired BEA Systems in 2008
  • 6. OC4J v/s WeLogic Oracle Containers for Java WebLogic Multiple JVMs One JVM Runs on wide range of ports Runs on a single port No HTTP listener Configured with HTTP listener Web Server is mandatory Not Mandatory Application Server cluster topology WebLogic Server domain OC4J groups WebLogic Server clusters Managed by OPMN Not managed by OPMN Oracle Enterprise Manager Application Oracle WebLogic Server Administration Server Control Console
  • 9. Understanding the Terminologies WebLogic Server Instance WebLogic Server Domain Administration Server Managed Server WebLogic Server Cluster Machine Node Manager
  • 10. WebLogic Server Instance WebLogic Server Instance is a Java Virtual Machine process runs Java code. Each domain must have one server instance One instance serves as Admin Server and rest as Managed Servers. Typical development environment is of one WebLogic instance
  • 11. WebLogic Server Domain A Domain is a logically related group of WebLogic Server resources that you manage as a unit. A domain provides one point of administration and each domain must create its own set of resources. A domain consists of one of more WebLogic server instances A domain lets you easily deploy applications across multiple WebLogic Server instances WebLogic Server stores the configuration information of a domain in config.xml file
  • 12. Administration Server Designed for managing the domain rather than running applications. One-to-one relationship between domains and Admin Server Manages the domain configuration Admin Server hosts the Administration Console used for configuring, monitoring and managing a domain In Production environment best practice is to separate the application work with administrative work. You can firewall the Admin Server separately to avoid external client access
  • 13. Managed Server Any additional servers you create after the creation of default Admin Server are called Managed Servers Contacts Admin Server only during the startup to get configuration and deployment settings Managed servers operates independent of the Admin Server after the startup Recommended to deploy applications to Managed Servers
  • 14. WebLogic Server Cluster Consists of multiple managed servers that runs simultaneously WebLogic Cluster provide increase reliability, scalability through load distribution and high availability Version of WebLogic server for all Managed Server instance in a cluster should be same A Cluster always belongs to a single WebLogic Server Domain. Each machine must have a static IP address and must not assign IP addresses dynamically to a cluster member though DHCP
  • 15. Node Manager Purely optional, lets you remotely manage both Admin and Managed Servers within that domain. Oracle recommends to install Node Manager on each of the machines that hosts Managed Server Each installation of WebLogic Server comes with Node Manager When you start or stop a Managed Server through Admin console, the admin server first access Node Manager, which in turn performs the actual task. Is available as either a Java-based or a script-based process
  • 16. Machine In WebLogic context, Machine is a logical representation of computer that hosts one or more WebLogic server instances. Runs a supported operating system platform A Machine could be a physical or virtual server that hosts Admin or Managed Server
  • 17. Administration Tools Admin console WebLogic Scripting Tool Configuration Wizard Configuration Template Builder Node Manager
  • 18. How does WebLogic Startup script works? Startup sequence Start $DOMAIN_HOME/startWebLogic.sh Calls $DOMAIN_HOME/bin/startWebLogic.sh Calls $DOMAIN_HOME/bin/bin/setDomainEnv.sh Calls $WL_HOME/common/bin/commEnv.sh setDomainEnv.sh will set other memory parameters Returns to $DOMAIN_HOME/bin/startWebLogic.sh $DOMAIN_HOME/bin/startWebLogic.sh organizes the parameters and calls java to startup the JVM and start Weblogic Server Boot Identity File Lock file $DOMAIN_HOME/servers/<ServerName>/tmp/<ServerName>.lok
  • 19. Invoking WLST Java weblogic.WLST Source the environment . ./setWLSEnv.sh which is under $MW_HOME/wlserver_10.3/server/bin [oracle@srfm bin]$ java weblogic.WLST Initializing WebLogic Scripting Tool (WLST) ... Welcome to WebLogic Server Administration Scripting Shell Type help() for help on available commands wls:/offline>
  • 20. Starting NodeManager via WLST wls:/offline> startNodeManager(verbose='true',NodeManagerHome='/u01/app/middleware/wlserver_ 12.1/common/nodemanager', ListenPort=5555', ListenAddress=vmlinux3.lab.com') wls:/offline> nmConnect('weblogic','welcome1','vmlinux3',5555,'pythian_domain','/u01/app/middleware /user_projects/domains/pythian_domain','ssl') Connecting to Node Manager ... Successfully Connected to Node Manager. wls:/nm/pythian_domain> wls:/nm/pythian_domain> nmServerStatus('ManagedServer_1'); RUNNING wls:/nm/pythian_domain> nmServerLog() wls:/nm/pythian_domain> stopNodeManager()
  • 21. Sample WLST script to monitor Server state.
  • 22. Sample WLST script to monitor Server state.
  • 23. How to change port in WebLogic? Option1: Change the port information via WebLogic console. Option 2: Update config.xml, modify listen-port Update ADMIN_URL on startManagedWebLogic.sh, stopWebLogic.sh and stopManagedWebLogic.sh scripts
  • 24. JVM Tuning Oracle recommends Sun JDK with the HotSpot Client JVM for Development Oracle JRockit JDK for Production due to superior performance JAVA_HOME and JAVA_VENDOR Tuning Java heap size java.lang.OutOfMemoryError <<no stack trace available>> java.lang.OutOfMemoryError <<no stack trace available>> Garbage Collection setDomainEnv.sh >>>
  • 25. JVM Tuning wls:/pythian_domain/domainRuntime> domainRuntime() wls:/pythian_domain/domainRuntime> cd('ServerRuntimes/AdminServer') wls:/pythian_domain/domainRuntime/ServerRuntimes/AdminServer> cd('JVMRuntime/AdminServer') wls:/pythian_domain/domainRuntime/ServerRuntimes/AdminServer/JVMRuntime/AdminServer> ls() -r-- HeapFreeCurrent 190211496 -r-- HeapFreePercent 72 -r-- HeapSizeCurrent 324927488 -r-- HeapSizeMax 477233152 -r-- JavaVMVendor Sun Microsystems Inc. -r-- JavaVendor Sun Microsystems Inc. -r-- JavaVersion 1.6.0_29 -r-- Name AdminServer -r-- OSName Linux -r-- OSVersion 2.6.18-194.el5 -r-- Type JVMRuntime -r-- Uptime 5341693 -r-x preDeregister Void : wls:/pythian_domain/domainRuntime/ServerRuntimes/AdminServer/JVMRuntime/AdminServer>
  • 26. How to remove a domain? Make sure services are down Remove domain entry from $MW_HOME/domain-registry.xml Remove entry from nodemanager.domains Delete a domain folder
  • 27. Hands on Session Install WebLogic 12c on Linux Configure WebLogic Domain Configuring Servers, Machines Cluster Configuration Using Admin console Starting Servers using Node Manager Configuring Data Sources Deploying/Undeploying simple Web Application Exploring important files and folders
  • 28. Thank you - Q&A

Editor's Notes

  • #6: Oracle WebLogic Server is a scalable, enterprise-ready Java Platformapplication server. Supports the deployment of many types of distributed applications and is an ideal foundation for building applications based on SOA. Enables enterprises to deploy mission-critical applications in a robust, secure, highly available, and scalable environment.
  • #25: JVM executes the byte codes in Java class files, so tuning affects the performance of applications you deployed. Garbage collection is the VM&apos;s process of freeing up unused Java objects in the Java heap.