WebLogic for DBAs 1.0h

WebLogic for DBAs Simon Haslam Veriton Limited1 (1.0)

Simon Haslam / Veriton Consultant & Oracle Partner, established for 15 years I mainly work on demanding web & contact-centre applications Architecture planning to installation Middle Admin ware to troubleshooting (and most things istrati on in between!)2 (1.0)

Agenda1. WebLogic Architecture and Components2. Installing WLS & Configuring a Domain3. Oracle Enterprise Manager – 11g & 12c4. Managing WebLogic

Recap. HTTP(S) HTTP(S) used Web Server to return HTML HTTP(S), AJP etc Application Server e.g. SQL*Net Database etc4 (1.0)

Key WebLogic Terms • Domain – Grouping of config/resources for an environment – Has one set of administrators/security privileges – Can be in Production or Development mode • Admin Server – Only one per domain – Runs the Admin Console – Can be relocated for HA • Managed Server – The server(s)/JVM that run your app(s) – Cluster(s) distribute your app over several MS • Node Manager – Small java program that (re)starts your servers (MS & AS)5 (1.0)

Example Architecture machine node manager app managed requests webserver server plug-in managed server admin console machine admin server managed server domain node managerEND6 (1.0)

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 – the MS can start up/run on its own – AS primarily used for changing configuration or deploying apps • You want Node Manager running all the time to stop/start WebLogic servers7 (1.0)

Quick Demo • WebLogic Console – machines – servers – data sources – deployed applications8 (1.0)

Typical Enterprise Application Load Balancers Web Server Web Server WebLogic WebLogic App App Managed Server Managed Server Cluster Oracle Database Web Web (RAC and/or DG) Services Services Services Layer9 (1.0)

Enterprise Manager GC/CC • Actually a fairly straightforward java application • Runs an Oracle Management Service (OMS) which OEM Agents (server processes running on remote machines you want to manage) connect to over HTTPS • Has a web application that provides the main EM console10 (1.0)

EM Grid/Cloud Control (HA) Load Balancer Web Server Web Server OMS OMS 1 2 WebLogic WebLogic EMGC_OMS1 EMGC_OMS2 Managed Server Managed Server Repository Database My My (DG and/or RAC) Oracle Oracle Support Support Services Layer11 (1.0)

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 this13 (1.0)

WebLogic Installation Steps 1. Install JVM (typically JRockit) 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 JVM14 (1.0)

1) Install JVM • Sun HotSpot or JRockit (will converge), or JVM for your platform (e.g. IBM) • JRockit specific: – don’t install demos & samples/source code – Windows latest – you probably don’t want JRockit as the public JRE15 (1.0)

2) Install WebLogic • e.g. java -jar wls1036_generic.jar • Only most relevant screens follow…16 (1.0)

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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…19 (1.0)

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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 you’ll probably go straight to EM 12c ☺24 (1.0)

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EM 12c – most relevant screens26 (1.0)

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Note: this is the current list of plug-ins for 12.1 BP1 but will probably increase over time28 (1.0)

Configure29 (1.0)

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32 bit Gotcha! • If you’re installing on Oracle Linux 5.7 see: https://forums.oracle.com/forums/thread.jspa? messageID=10220015 • Need to lower memory usage in <ORACLE_HOME>/oms/sysman/omsca/scripts/ wls/create_domain.py • You wouldn’t use 32 bit in production now but may do for laptop or lab VM31 (1.0)

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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) • Log files…34 (1.0)

Log Files • Managed server logs are under: – DOMAIN_HOME/servers/<name>/logs – Accessible through console too • Diagnostics • Console monitor35 (1.0)

Quick Demo • Processes • Log files36 (1.0)

WLST Exampledef 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...37 (1.0)

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• 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 you39 (1.0)

Thanks for listening! Twitter: @simon_haslam Oracle Fusion Middleware Admin blog: http://simonhaslam.co.uk40 (1.0)

WebLogic for DBAs 1.0h

by Veriton Limited on Mar 22, 2012

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