JAVA HEAP SPACE error

[Henri25]

Hi,

I get the Out of Memory Java Heap space error, when i want to generate big reports (more dan 40.000 pages).

I have used all options with the virtualizer, but i got still the error.

Can anyone help me..it's a big problem for me.?

Sincerely,
Henri Megens
GouwIT
The Netherlands

[vickirk]

Hi,

You could try setting a java jvm option on the command used to start iReprt, e.g. try

  ireport -J-Xmx512m

If you are are wnidows you will probably have to modify the shortchut via right click>properties, then add the " -J-Xmx756m" (without quotes but with space) to the end of the target field.

If that doesnt work try increasing the number. Hope this helps.

Regards, Vic

 

[vickirk]

Sorry, shoul dhave mentioned what this does.  It sets the max memory allowed to be used via java to be 512Mb (or 756Mb in the second example!)

[Henri25]

Hi.

 

It doesn't matter....Have you got any other ideas?

I hope so..it's a very important problem for my.

 

Thanks in advance,

Henri Megens
GouwIT
THe Netherlands.....

 

Here's my whole content of the startup.bat of i-report.@echo off
set TMP_CLASSPATH=%CLASSPATH%

for %%i in (%0) do cd /d %%~dpi..

set CLASSPATH=%CLASSPATH%;.classes;.fonts;

rem for %%i in ("%FLEX_SDK_HOME%lib*.jar") do call ".bincpappend.bat" %%i

rem Add all jars....
for %%i in (".lib*.jar") do call ".bincpappend.bat" %%i
for %%i in (".lib*.zip") do call ".bincpappend.bat" %%i

 

set IREPORT_CLASSPATH=%CLASSPATH%
set CLASSPATH=%TMP_CLASSPATH%

if not "%IREPORT_HOME%" == "" goto gotIReportHome
set IREPORT_HOME=%CD%
:gotIReportHome

java -cp "%IREPORT_CLASSPATH%" -Direport.home="%IREPORT_HOME%" -Djava.security.policy="%IREPORT_HOME%/policy.all" -Xms1024m -Xmx1024m it.businesslogic.ireport.gui.MainFrame %*

 

 

[gsxstylee]

vickirk
Wrote:

Hi, You could try setting a java jvm option on the command used to start iReprt, e.g. try   ireport -J-Xmx512m If you are are wnidows you will probably have to modify the shortchut via right click>properties, then add the " -J-Xmx756m" (without quotes but with space) to the end of the target field. If that doesnt work try increasing the number. Hope this helps. Regards, Vic

I noticed that this does not work anymore, is there another place where the heap size is set now?

[Giulio Toffoli]

You can set the java heap space in the file:

<ireport 3.1.0 and laters>/etc/ireport.conf

There is a line like that:

default_options="-J-Xms256m -J-Xmx512m -J-Dfile.encoding=UTF-8 -J-Dorg.netbeans.ProxyClassLoader.level=1000"

From this configuration file you can force the use of a specific java virtual machine.

Giulio

[lotion46]

 Hi,

I also get an "out of memory" error while generating an excel export.

Above mentioned hints are not working or respectively it's not clear to me what to do exactly.

But I´m surprised that my report works with IR 2.04 but not with IR 3.5.2. 

Post Edited by lotion46 at 07/23/2009 10:45

[Giulio Toffoli]

iReport 3.5.2 uses much more memory, so if the heap space is the same, you'll probably get more easily an out of memory.

This is what you should do to execute very large reports:

1, If the error happens at filling time, you can use a virtualizer to limit the use of memory (Tools->Options->iReport->Compilation and execution (tab) ->Execution options (tab)  check "Use virtualizer". The vitualizer can be configured in the tab  "Virtualizer".

2. If the error happens at export time, the virtualizer is not useful, and you have to increase the heap size (meaning set a bigger value for the option -J-Xmx512m

Giulio

[lotion46]

 So the error happens while report generation. I tried it with the virtualizer (all kinds) but the report still won't be created.

In 2.04 it takes round about 15 minutes to get the report but 3.5.2 has even after two hours not finished.

[rodnikosh]

i have the same error in 4.8.0.

none of the solutions above work.

any solution for this?