Liferay Environment Challenges and Solutions With Eclipse _ Liferay Savvy

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03/09/2015 Li fer ay Env ir onm ent C hal lenges and Sol uti ons w ith Ec li pse ~ Li fer ay Savv y

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Liferay Environment Challenges and Solutions with

Eclipse

Meera Prince

Liferay Environment Challenges and Solutions with Eclipse

ECJ is not installed Error when deploy the portlet from eclipse

PermGen Space Error / Out of Memory Error

ECJ is not installed Error when deploy portlet in eclipse

Solution: 1

Generally in liferay to compile and build the application it uses ECJ

jar. When we use following properties in build.properits file of

Liferay Plugins SDK

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http://w w w .l i fer aysavvy.com /2013/12/l i fer ay- envi r onm ent- chal l enges- and.htm l 2

#javac.compiler=modern

javac.compiler=org.eclipse.jdt.core.JDTCompilerAdapter

When we use JDT compiler in eclipse then It will expect ecj.jar

should be available in global ant runtime path.

So we need to add ecj.jar file to ANT global class path as follows

Go to eclipse windows preferences

Select ANT run time as follows

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Now add jar file to ant global class path. Select external jar file

button then brows ecj.jar file

Note:

ecj.jar file available in Plugins SDK lib directory (liferay-plugins-

sdk-6.2.0/lib)

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Solution: 2

Now we can also skip this error by using java compiler to modern.

We already know we have created SystemUserName.build.properties

to override properties in Plugins SDK build.properties file.

We just uncomment JDT compiler and enable java complier to

modern in SystemUserName.build.propertis file of your Plugins SDK.

Do as follows in properties file

javac.compiler=modern

#javac.compiler=org.eclipse.jdt.core.JDTCompilerAdapter

PermGen Space Error / Out of Memory Error

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When we run liferay we need to set heap memory for JVM that is used

by liferay application server

The following three options witch control the JVM Heap memory so

that we need to set this values as JAVA_OPTS.

-Xms

-Xmx

-XX:MaxPermSize

Set this following values as JAVA_OPTS so that liferay portal can run

without PermGen space error or Out of Memory Error

-Xms1024m -Xmx1024m -XX:MaxPermSize=256m

We can set JAVA_OPTS in following ways

1. Set JAVA_OPTS as System Variable

2. Set JAVA_OPTS in Application Server

3. Set JAVA_OPTS to Eclipse Configured Server

Set JAVA_OPTS as System Variable in Windows

When we set JAVA_OPTS as System Environment Variable then all

servers uses the same java opts to all servers and applications which

are running in the machine

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To set JAVA_OPTS in windows operating system we need to go to

computer properties and need to choose Advanced System Settings

The following screen shows to select computer properties

Now click on Environment variables

The following screen shows advances system settings

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In the system variables section click on new button to create new

system environment variables

The following screen shows create system environment variables

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Once click on new it will ask variable name and its value and click on

OK then JAVA_OPTS will be created as System Environment

Variables.

Enter following values

Variable Name: JAVA_OPTS

Variable Value: -Xms1024m -Xmx1024m -

XX:MaxPermSize=256m

Note:

When we set JAVA_OPTS as system variables then all application

servers which are running in the machine will use these values.

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This variable not only for Liferay portal it can be for any web

applications which are running in the server.

This variables setting in windows environment and its same for other

OS like Linux but setting of variable is bit different.

Set JAVA_OPTS in Application Server

We can also set JAVA_OPTS values in application serves. For each

server there some configuration files we can set server configuration

in the file so that it can be read by when server is starting.

When we set the value in server then it can be used by application

which is running in the server.

Server configuration file is different with respect to server vendor.

Tomcat Server:

In tomcat we will use setenv.bat/setenv.sh file to configure

JAVA_OPTS

Go to tomcat server bin directory and create setenv.bat file for

windows environment and setenv.sh for Linux environment.

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Once we create the files add JAVA_OPTS in file as follows

In windows setenv.bat as follows

set "JAVA_OPTS=%JAVA_OPTS% -Xmx1024m -

XX:MaxPermSize=256m"

In Linux setenv.sh as follows

export JAVA_OPTS="$JAVA_OPTS -Xmx1024m -


In tomcat server we can also use CATALINA_OPTS instead of

JAVA_OPTS. This is only for tomcat server

In windows setenv.bat as follows

set " CATALINA_OPTS =% CATALINA_OPTS % -Xmx1024m -


In Linux setenv.sh as follows

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export CATALINA_OPTS ="$ CATALINA_OPTS -Xmx1024m -


Note:

In liferay tomcat server setenv.bat/setenv.sh and configuration already

have done. If any problem occurred we just need adjust the values in

configuration.

This configuration not only for liferay environment we can use for any

web applications which are in running in server.

JBOSS Server

Jboss in windows

Jboss server in windows OS we will use standalone.conf.bat this file

available in jboss server bin directory (jboss-7.1.1\bin).

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Open jboss standalone.conf.bat and set JAVA_OPTS as follows

set "JAVA_OPTS=%JAVA_OPTS% -Dfile.encoding=UTF-8 -

Djava.net.preferIPv4Stack=true -Duser.timezone=GMT -

Xmx1024m -XX:MaxPermSize=256m"

Jboss in Linux

Jboss server in Linux we will use standalone.conf this file available in

jboss server bin directory(jboss-7.1.1\bin).

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Open jboss standalone.conf and set JAVA_OPTS as follows

JAVA_OPTS="$JAVA_OPTS -Dfile.encoding=UTF-8 -

Djava.net.preferIPv4Stack=true -Duser.timezone=GMT -Xmx1024m -XX:MaxPermSize=256m"

Note:

In liferay jboss bundle all configurations already done and when we

get any problems then we just need to adjust values.

These configuration can use for any web application not only for

liferay.

Set JAVA_OPTS to Eclipse Configured Server

Generally we configure application servers to eclipse. We can also

configure the values through eclipse.

In ellipse go to servers view and double click on server and then click

open launch configuration

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Once opened configuration winnow select arguments tab and see the

VM arguments

Now you can see memory related variables and you can adjust the size

of variables

Related Articles:

http://www.liferaysavvy.com/2012/09/setting-environment-variables-

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Author

Meera Prince

ant , catalina opts , ecj , heap memory , java opts , jobss configuration ,

liferay heap , liferay jobss , liferay permgen space , out of memory , permgenspace , Permgen space error , setenv.bat , setenv.sh , standalone.conf No

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Meera Prince shared this via Google+ 1 year ago - Shared publicly

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Meera Prince 1 year ago - Shared publicly

Liferay Environment Challenges and Solutions with EclipseLiferay Environment Challenges and Solutions with

Eclipse ECJ is not installed Error when deploy portlet in

eclipse PermGen Space Error / Out of Memory Error ECJ

is not installed Error when deploy portlet in eclipse Solution:

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