java.lang.OutOfMemoryError: Java heap space in tomcat7

Question

I am getting this error in tomcat server.

Exception in thread "http-bio-8080-exec-17" 
Exception in thread "http-bio-8080-exec-2"
Exception in thread "http-bio-8080-exec-15" 
Exception in thread "http-bio-8080-exec-20"
Exception in thread "http-bio-8080-exec-18" 
java.lang.OutOfMemoryError: Java heap space.

I have seen MAT but how do I generate the .hprof file in my Tomcat server.

Thank you.

teukkam · Accepted Answer · 2017-10-09 07:58:44Z

16

to remove the error edit the file

/etc/default/tomcat7

replace with:

JAVA_OPTS="-Djava.awt.headless=true -Xmx1280m -XX:+UseConcMarkSweepGC"

Then restart the web server.

Xmx is the new maximum size of memory and it should be affordable by your machine.

edited Oct 9, 2017 at 7:58

teukkam

4,3271 gold badge28 silver badges35 bronze badges

answered Sep 11, 2014 at 8:54

Jobin

3263 silver badges13 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

pevik Over a year ago

Number 7 is (of course) depending on tomcat version (for me it's /etc/default/tomcat8).

Rui F Ribeiro Over a year ago

This location is the Debian way of doing it; I would also look into the Xms option in the other answers.

Farvardin · Accepted Answer · 2014-03-10 05:05:16Z

12

add this line to /path/to/tomcat/bin/setenv.sh (if doesn't exist create it) :

CATALINA_OPTS="$CATALINA_OPTS -server -Xms256m -Xmx1024m"

this increases tomcat's heap size to 1024MB.

answered Mar 10, 2014 at 5:05

Farvardin

5,4226 gold badges36 silver badges54 bronze badges

1 Comment

Sinri Edogawa Over a year ago

If debian 7, usually /usr/share/tomcat7/bin/setenv.sh

Ean V · Accepted Answer · 2014-03-10 05:25:00Z

5

Solution as per your OS:

if Ubuntu:

open .bashrc file available in user home folder (it is hidden) and Add or Edit one line among last 2-3 lines:

export CATALINA_OPTS="-Xms512m -Xmx1024m"

else Windows:

In your environment variables add/edit

CATALINA_OPTS = "-Xms512m -Xmx1024m"

edited Mar 10, 2014 at 5:25

Ean V

5,4495 gold badges33 silver badges39 bronze badges

answered Mar 10, 2014 at 5:06

ravi.patel

1194 bronze badges

2 Comments

prabhu Over a year ago

I am using ubuntu. If i write this line in .bashrc file what it will do. please tell me. whether it is increase heap size or export. If export how can i find that file.

Rui F Ribeiro Over a year ago

I would not advise .bashrc. You want this configuration to be system wide, not specific to a user. On top of it, some Java instances (for example tomcat), run with their specific user, and as such, in that cases this configuration wont affect the Java instance.

NicoGuevaraAtuq · Accepted Answer · 2021-03-04 19:56:17Z

0

Go to /bin and create a file named setenv.sh for Linux systems or setenv.bat for Windows.
Inside the setenv file, use the following format to set the heap size using the following parameters:

-Linux:

export CATALINA_OPTS="-Xms4096M -Xmx4096M"

-Windows:

set CATALINA_OPTS=-Xms4096M -Xmx4096M

Make sure both the values match for minimum and maximum.
Save the file and restart Tomcat.

answered Mar 4, 2021 at 19:56

NicoGuevaraAtuq

5922 gold badges6 silver badges17 bronze badges

Collectives™ on Stack Overflow

java.lang.OutOfMemoryError: Java heap space in tomcat7

4 Answers 4

2 Comments

1 Comment

2 Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

4 Answers 4

2 Comments

1 Comment

2 Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related