oracle 9ias f orms d multiple oc4j i

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ORACLE 9iAS FORMS DEPLOYMENT : MULTIPLE OC4J INSTANCES

Inderpal S. Johal

Session id: 36636

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AGENDA

�� Java 2 Enterprise Edition (J2EE) BasicsJava 2 Enterprise Edition (J2EE) Basics

�� Oracle 9iAS Containers for J2EE (OC4J) Oracle 9iAS Containers for J2EE (OC4J) BasicsBasics

�� Oracle 9iAS ArchitectureOracle 9iAS Architecture

�� Oracle 9iAS Forms Services ComponentsOracle 9iAS Forms Services Components

�� Forms Services Configuration FilesForms Services Configuration Files

�� Forms Services ManagementForms Services Management

�� Demo for Configuration and Load balancingDemo for Configuration and Load balancing

�� Questions & AnswersQuestions & Answers

�� DonDon’’t Forget the Online Surveyt Forget the Online Survey

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Oracle 9iAS Terms

OHS Instance

Cluster

9iASInstance

Farm

OC4J Instance

0..n for each farm

0..n for each cluster or 1..n for each farm as stand alone

1 per application server instance

1..n per application server instance

Infrastructure

1 for each farm

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Forms Runtime Engine

� It is a process created on the Application Server

as ifweb90 on Windows, f90webm on UNIX

� Provides communication between the client

and database through Oracle 9i Net services.

� Executes all Application logic and processing

� Load forms executables into memory like .fmx,

.plx that contain the application code

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Forms Services Configuration Files

�� Oracle HTTP Listener Oracle HTTP Listener ConfigConfig FilesFiles

�Httpd.conf

�Oracle_apache.conf

�Mod_oc4j.conf

�Forms90.conf

�� Forms Services Forms Services ConfigConfig filesfiles

�Formsweb.cfg

�Default.env

�Base*.htm

�Forms90app.ear

�Registry.dat

��OC4J OC4J ConfigConfig FilesFiles

�Web.xml

$OH/Apache/Apache/conf$OH/Apache/Apache/conf

$OH/forms90/server $OH/forms90/server

$OH/forms90/server$OH/forms90/server

$OH/forms90/j2ee $OH/forms90/j2ee

$OH/forms90$OH/forms90\\javajava\\oracleoracle\\formsforms\\registryregistry

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Distributed Configuration Management (DCM)

� DCM manages configuration by propagating the cluster-wide configuration for the application server instances and its components.

� The files are located under the directory: $ORACLE_HOME/dcm

� Instance configuration is persisted into the Configuration Repository in the database.

� Command line utility dcmctl

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DCMCTL utility

� Stop and respectively restart all configured OC4J instances from the command line:

� Stop and respectively restart the OHS instance

home from the command line:

$> dcmctl stop –co OC4J_BI_Forms$> dcmctl restart –co OC4J_BI_Forms

$> dcmctl stop –ct ohs$> dcmctl restart –ct ohs

$> dcmctl help$> dcmctl getState -v$> dcmctl getError ADM-906007

� Other useful DCM Help and Error commands:

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Oracle Process Manager Notification [OPMN]

� OPMN consists of the following two components:

�Oracle Process Manager �Oracle Notification System

� Oracle Process Manager uses the configuration files opmn.xml and ons.conf.

� The files are located under the directory: $ORACLE_HOME/opmn/conf/

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Additional StepsAdditional Steps

$ cd $ORACLE_HOME/forms90

$ mkdir TEST

$ cp $OH/forms90/test.fmx $OH/forms90/TEST

$ cd $ORACLE_HOME/forms90/server

$ cp formsweb.cfg formsTest90.cfg

<<<formsTest90.cfg>><<<formsTest90.cfg>>

working directory=/oracle/9iAS/forms90/TEST

form=test.fmx

ServerURL=/TEST/l90servlet

Serverhost=devindy.prnewswire.com

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WEB.XML$OH/j2ee/OC4J_TEST90/applications/TEST90/forms90web/WEB-INF

<init-param>

<param-name>configFileName</param-name>

<param-value>

/oracle/9iAS/forms90/server/formsTest90.cfg/oracle/9iAS/forms90/server/formsTest90.cfg

</param-value>

</init-param>

<context-param>

<param-name>configFileName</param-name>

<param-value>

/oracle/9iAS/forms90/server/formsTest90.cfg/oracle/9iAS/forms90/server/formsTest90.cfg

</param-value>

</context-param>

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FORMS90.CONFFORMS90.CONF

Added the Following entries in forms90.conf file located in

$ORACLE_HOME/forms90/server

Oc4jMount /TEST OC4J_TEST90

Oc4jMount /TEST/f90servlet OC4J_TEST90

Oc4jMount /TEST/f90servlet/* OC4J_TEST90

Oc4jMount /TEST/l90servlet OC4J_TEST90

Oc4jMount /TEST/l90servlet/* OC4J_TEST90

Restart the OHS [ Oracle HTTP Server ]

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Restart OHS and OC4J

This can be done by using the “dcmctl” or OEM

DCMCTL Commands

$ dcmctl stop –co OC4J_TEST90

$ dcmctl stop –ct ohs

$ dcmctl getstate –v

$ dcmctl start –ct ohs

$ dcmctl start –co OC4J_TEST90

$ dcmctl getstate -v

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FORMSFORMS

DEPLOYMENTDEPLOYMENT

OneOne--Machine SolutionMachine Solution

Simplest ConfigurationSimplest Configuration

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Application Tier Db tierClient Tier

Forms Deployment �� 1 Machine Configuration

HTTPHTTP

ServerServer

OC4JOC4J

Servlet EngineServlet Engine

FormsForms

ServletServletMM

OO

DD

OO

CC

44

JJ

FormsForms

ListenerListener

ServletServlet

FormsForms

RuntimeRuntime

0..n0..n

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HTTPHTTP

ServerServerOC4JOC4J


FormsForms

ServletServlet

MM

OO

DD

OO

CC

44

JJ

FormsForms

ListenerListener

ServletServlet

FormsForms

RuntimeRuntime

0..n0..n

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HTTPHTTP

ServerServer

OC4JOC4J


FormsForms

ServletServletMM

OO

DD

OO

CC

44

JJ

FormsForms

ListenerListener

ServletServlet

FormsForms

RuntimeRuntime

0..n0..n

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HTTPHTTP

ServerServer

OC4JOC4J


FormsForms

ServletServletMM

OO

DD

OO

CC

44

JJ

FormsForms

ListenerListener

ServletServlet

FormsForms

RuntimeRuntime

0..n0..n

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HTTPHTTP

ServerServer

OC4JOC4J


FormsForms

ServletServletMM

OO

DD

OO

CC

44

JJ

FormsForms

ListenerListener

ServletServlet

FormsForms

RuntimeRuntime

0..n0..n

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HTTPHTTP

ServerServer

OC4JOC4J


FormsForms

ServletServletMM

OO

DD

OO

CC

44

JJ

FormsForms

ListenerListener

ServletServlet

FormsForms

RuntimeRuntime

0..n0..n

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FORMSFORMS


TwoTwo--Machine SolutionMachine Solution

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Forms Deployment �� 2- Machine configuration

HTTPHTTP

ServerServer

MM

OO

DD

OO

CC

44

JJ

OC4JOC4J


FormsForms

ServletServlet

FormsForms

ListenerListener

ServletServlet

FormsForms

RuntimeRuntime

0..n0..n

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HTTPHTTP

ServerServer

MM

OO

DD

OO

CC

44

JJ

OC4JOC4J


FormsForms

ServletServlet

FormsForms

ListenerListener

ServletServlet

FormsForms

RuntimeRuntime

0..n0..n

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HTTPHTTP

ServerServer

MM

OO

DD

OO

CC

44

JJ

OC4JOC4J


FormsForms

ServletServlet

FormsForms

ListenerListener

ServletServlet

FormsForms

RuntimeRuntime

0..n0..n

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HTTPHTTP

ServerServer

MM

OO

DD

OO

CC

44

JJ

OC4JOC4J


FormsForms

ServletServlet

FormsForms

ListenerListener

ServletServlet

FormsForms

RuntimeRuntime

0..n0..n

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2 Machine Configuration on OHS

Configure MOD_OC4J in OHS server to point to Configure MOD_OC4J in OHS server to point to servletservletengine on other machineengine on other machine

� Put the Following entry in $OH/Apache/Apache/conf/httpd.conf under the mod_alias.c

AliasMatch ^/forms90/java/(..*) "/oracle/oranotinf/forms90/java/$1"

AliasMatch ^/forms90/jinitiator/(..*) "/oracle/oranotinf/jinit/$1"

AliasMatch ^/forms90/html/(..*) "/oracle/oranotinf/tools/web90/html/$1“

� by placing the Following entry in $OH/Apache/Apache/conf/mod_oc4j.conf under the mod_oc4j.cOc4jMount /forms90 instance://my1.com:OC4J_BI_Forms

Oc4jMount /forms90/f90servlet instance://my1.com:OC4J_BI_Forms

Oc4jMount /forms90/f90servlet/* instance://my1.com:OC4J_BI_Forms

Oc4jMount /forms90/l90servlet instance://my1.com:OC4J_BI_Forms

Oc4jMount /forms90/l90servlet/* instance://my1.com:OC4J_BI_Forms

� Restart the OHS

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2 Machine Configuration changes

� Good alternative in the absence of powerfull single machine

� OHS can be used to support other application without affecting the CPU or memory resources for Forms services

� This is not a High availability or Load balancing solution

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FORMSFORMS


Load Balancing SolutionLoad Balancing Solution

#1#1

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Load Balancing Approach

�� There are two ways to make the Mod_oc4j Load There are two ways to make the Mod_oc4j Load

balancingbalancing

�Increasing OC4J process

�Adding more OC4J instances

In addition,

� You can use External Load balancer [ h/w or s/w based] which can balance the Load among HTTP server

� Use combination of External Load balancer and Mod_OC4J load balancing

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Multiple OC4J Processes

This can be done by using OEM

� OEM Website [ http://My.com:1810http://My.com:1810 ]

� Select the Mid tier InstanceMid tier Instance

� Select the OC4J instance like OC4J_BI_FormsOC4J_BI_Forms

� Select Server PropertiesServer Properties

� Under Multiple VM Configuration, Increase the number of processes

This will create the following

� Add the Entries for Island in $OH/$OH/opmn/conf/opmn.xmlopmn/conf/opmn.xml

� Create additional folder(s) in$OH/j2ee/OC4J_BI_Forms/application$OH/j2ee/OC4J_BI_Forms/application--deployments/forms90appdeployments/forms90app

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OC4J Processes Vs Instances

� Good Starting point is to Add 1 OC4J processes for every 2-3 CPUs.

� A single OC4J processes is found to use 70% of the Resources on four processor system

� Adding high number of OC4J processes can degrade the performance and so be added in increment

� Multiple OC4J instances can result in higher throughput and shorter response time , even on single-processor system

� If running multiple Application on a system, then a combination of Multiple OC4J instances with multiple OC4J processes can be used

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Forms Deployment Forms Deployment �� Load Balance ConfigurationLoad Balance Configuration

HTTPHTTP

ServerServer

MM

OO

DD

OO

CC

44

JJ

OC4JOC4JFormsFormsServletServlet

Forms ListenerForms Listener

ServletServlet

Forms RuntimeForms Runtime

OC4JOC4JFormsForms

ServletServlet

Forms ListenerForms ListenerServletServlet


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Forms Deployment Forms Deployment �� Load Balance ConfigurationLoad Balance Configuration

HTTPHTTP

ServerServer

MM

OO

DD

OO

CC

44

JJ



ServletServlet


OC4JOC4JFormsForms

ServletServlet



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Forms Deployment Forms Deployment �� Load Balance Configuration Load Balance Configuration

HTTPHTTP

ServerServer

MM

OO

DD

OO

CC

44

JJ



ServletServlet


OC4JOC4JFormsForms

ServletServlet



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HTTPHTTP

ServerServer

MM

OO

DD

OO

CC

44

JJ



ServletServlet


OC4JOC4JFormsForms

ServletServlet



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HTTPHTTP

ServerServer

MM

OO

DD

OO

CC

44

JJ



ServletServlet


OC4JOC4JFormsForms

ServletServlet



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HTTPHTTP

ServerServer

MM

OO

DD

OO

CC

44

JJ



ServletServlet


OC4JOC4JFormsForms

ServletServlet



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� by placing the Following entry in $OH/Apache/Apache/conf/mod_oc4j.conf under the mod_oc4j.c

Oc4jMount /forms90 instance://my1.com:OC4J_BOc4jMount /forms90 instance://my1.com:OC4J_BI_Forms,my2.com:OC4J_BI_FormsI_Forms,my2.com:OC4J_BI_Forms

Oc4jMount /forms90/f90servlet instance://my1.com:OC4J_BI_FormsOc4jMount /forms90/f90servlet instance://my1.com:OC4J_BI_Forms,my2.com:OC4J_BI_Forms,my2.com:OC4J_BI_Forms

Oc4jMount /forms90/f90servlet/* instance://my1.com:OC4J_BI_FormsOc4jMount /forms90/f90servlet/* instance://my1.com:OC4J_BI_Forms,my2.com:OC4J_BI_Forms,my2.com:OC4J_BI_Forms

Oc4jMount /forms90/l90servlet instance://my1.com:OC4J_BI_FormsOc4jMount /forms90/l90servlet instance://my1.com:OC4J_BI_Forms,my2.com:OC4J_BI_Forms,my2.com:OC4J_BI_Forms

Oc4jMount /forms90/l90servlet/* instance://my1.com:OC4J_BI_FormsOc4jMount /forms90/l90servlet/* instance://my1.com:OC4J_BI_Forms,my2.com:OC4J_BI_Forms,my2.com:OC4J_BI_Forms

� Restart the OHS


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� Load balancing only occurs for the first request as if the OC4 instance is down, session state is not preserved.

� Forms Services OC4J instance failure can be bypassed but the HTTP server Failure result in loss of production

� May overload remaining machine but can be avoided by adding more forms services

� Note that in 9iAS Release 2 , OPMN restart OC4J servlet engines if stopped due to OS reason

� This is not a High availability or Load balancing solution


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FORMSFORMS



#2#2

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ServletServlet




ServletServlet


HTTP ServerHTTP Server

MOD_OC4JMOD_OC4J

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ServletServlet




ServletServlet



MOD_OC4JMOD_OC4J

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ServletServlet




ServletServlet



MOD_OC4JMOD_OC4J

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ServletServlet




ServletServlet



MOD_OC4JMOD_OC4J

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� by placing the Following entry in $OH/Apache/Apache/conf/mod_oc4j.conf under the mod_oc4j.c

Oc4jMount /forms90 instance://my1.com:OC4J_BOc4jMount /forms90 instance://my1.com:OC4J_BI_Forms,my2.com:OC4J_BI_FormsI_Forms,my2.com:OC4J_BI_Forms

Oc4jMount /forms90/f90servlet instance://my1.com:OC4J_BI_FormsOc4jMount /forms90/f90servlet instance://my1.com:OC4J_BI_Forms,my2.com:OC4J_BI_Forms,my2.com:OC4J_BI_Forms

Oc4jMount /forms90/f90servlet/* instance://my1.com:OC4J_BI_FormsOc4jMount /forms90/f90servlet/* instance://my1.com:OC4J_BI_Forms,my2.com:OC4J_BI_Forms,my2.com:OC4J_BI_Forms

Oc4jMount /forms90/l90servlet instance://my1.com:OC4J_BI_FormsOc4jMount /forms90/l90servlet instance://my1.com:OC4J_BI_Forms,my2.com:OC4J_BI_Forms,my2.com:OC4J_BI_Forms

Oc4jMount /forms90/l90servlet/* instance://my1.com:OC4J_BI_FormsOc4jMount /forms90/l90servlet/* instance://my1.com:OC4J_BI_Forms,my2.com:OC4J_BI_Forms,my2.com:OC4J_BI_Forms

� Restart the OHS


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FORMSFORMS



Using Load BalancerUsing Load Balancer

#1#1

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Forms Deployment Forms Deployment ��External Load Balancer External Load Balancer

OC4JOC4JFormsForms

ServletServlet




MOD_OC4JMOD_OC4J



ServletServlet



MOD_OC4JMOD_OC4J

L

B

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OC4JOC4JFormsForms

ServletServlet




MOD_OC4JMOD_OC4J



ServletServlet



MOD_OC4JMOD_OC4J

L

B


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OC4JOC4JFormsForms

ServletServlet




MOD_OC4JMOD_OC4J



ServletServlet



MOD_OC4JMOD_OC4J

L

B


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OC4JOC4JFormsForms

ServletServlet




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MOD_OC4JMOD_OC4J

L

B


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OC4JOC4JFormsForms

ServletServlet




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ServletServlet



MOD_OC4JMOD_OC4J

L

B


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OC4JOC4JFormsForms

ServletServlet




MOD_OC4JMOD_OC4J



ServletServlet



MOD_OC4JMOD_OC4J

L

B


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FORMSFORMS



Using Load BalancerUsing Load Balancer

#2#2

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OC4JOC4JFormsForms

ServletServlet




MOD_OC4JMOD_OC4J



ServletServlet



MOD_OC4JMOD_OC4J

L

B


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OC4JOC4JFormsForms

ServletServlet




MOD_OC4JMOD_OC4J



ServletServlet



MOD_OC4JMOD_OC4J

L

B


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OC4JOC4JFormsForms

ServletServlet




MOD_OC4JMOD_OC4J



ServletServlet



MOD_OC4JMOD_OC4J

L

B


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OC4JOC4JFormsForms

ServletServlet




MOD_OC4JMOD_OC4J



ServletServlet



MOD_OC4JMOD_OC4J

L

B


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OC4JOC4JFormsForms

ServletServlet




MOD_OC4JMOD_OC4J



ServletServlet



MOD_OC4JMOD_OC4J

L

B


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OC4JOC4JFormsForms

ServletServlet




MOD_OC4JMOD_OC4J



ServletServlet



MOD_OC4JMOD_OC4J

L

B


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Q U E S T I O N SQ U E S T I O N S

A N S W E R SA N S W E R S

oracle 9ias f orms d multiple oc4j i

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