Re: java.lang.OutOfMemoryError: PermGen space

Tue, 06 Jun 2006 06:22:39 -0700 

hi,
if you have a lot of different webapps with the same third party libs in the WEB-INF/lib folder it might help if you move them to the shared/lib folder. i recommend to put only the third party libs there, who are definitely the same for all webapps, for example jdbc-driver and similar things. 


this helps because otherwise they are all loaded by a different 
classloader so they all need for each webapp some permGen space.



does it needs some redeploys of webapps till the memory exception 
ocures? in this case the class loader of the undeployed webapp can't be 
garbage collected and all the classdefinitions remain in memory for 
ever... or until tomcat is restarted.


regards
chris

Ingo Rockel wrote:


Hi,


Your Permanent Generation is running out of memory, this is a special 
space in the vm memory, where the vm stores all of its internal data 
(classes, etc.). You should pass -XX:+PrintGCDetails to the VM to see 
how much perm-space is used. If you have a lot of 
third-party-libraries etc. your permanent space might be to small, 
adjust using:


    -XX:MaxPermSize=<newvalue>

see here for options:

    http://java.sun.com/docs/hotspot/VMOptions.html

regards,

    Ingo

Peter Neu schrieb:


Hello,


 

I have many memory consuming apps on my tomcat server. I a lot pdf & 
excel

generation. So every other week I get this error


 


 java.lang.OutOfMemoryError: PermGen space


 

I know the root of this error is that the garbage collector does not 
clean

up and memory allocated
for java object generation is used up. But what can I do about it? If I
allocate more memory I'm only postponing


the problem. So do I have to shutdown every day my tomcat server to 
ensure

the deletion of unused objects or


Will only a tomcat cluster help in this case? I also read the 
archives but

could not find any useful explenation.


 

I defined max memory usage for 2 Gig with the Catalina_Opts variable 
in my

start script. CATALINA_OPTS="-Xmx2048m -Xms1536m"


 


Tomcat 5.5.9

Java 1.5.0_04-b05

SuSE Linux ES 9


 


Cheers,


 


Pete


 

 

 

 


SCHWERWIEGEND: Servlet.service() for servlet jsp threw exception

java.lang.OutOfMemoryError: PermGen space

Exception in thread "TP-Processor10" java.lang.OutOfMemoryError: PermGen
space

Exception in thread "TP-Processor11" Exception in thread "TP-Processor1"
java.lang.OutOfMemoryError: PermGen space

java.lang.OutOfMemoryError: PermGen space

Exception in thread "TP-Processor7" java.lang.OutOfMemoryError: PermGen
space

Exception in thread "TP-Processor6" java.lang.OutOfMemoryError: PermGen
space

Exception in thread "TP-Processor2" java.lang.OutOfMemoryError: PermGen
space

Exception in thread "TP-Processor12" java.lang.OutOfMemoryError: PermGen
space

Exception in thread "TP-Processor5" java.lang.OutOfMemoryError: PermGen
space

Exception in thread "TP-Processor9" java.lang.OutOfMemoryError: PermGen
space

Exception in thread "TP-Processor16" java.lang.OutOfMemoryError: PermGen
space

Exception in thread "TP-Processor15" java.lang.OutOfMemoryError: PermGen
space

Exception in thread "TP-Processor14" java.lang.OutOfMemoryError: PermGen
space

Exception in thread "TP-Processor13" java.lang.OutOfMemoryError: PermGen
space

Exception in thread "TP-Processor20" java.lang.OutOfMemoryError: PermGen
space


Exception in thread "TP-Processor18" Exception in thread 
"TP-Processor19"

java.lang.OutOfMemoryError: PermGen space

java.lang.OutOfMemoryError: PermGen space

Exception in thread "TP-Processor17" java.lang.OutOfMemoryError: PermGen
space

Exception in thread "TP-Processor24" java.lang.OutOfMemoryError: PermGen
space

Exception in thread "TP-Processor23" java.lang.OutOfMemoryError: PermGen
space

Exception in thread "TP-Processor22" java.lang.OutOfMemoryError: PermGen
space

Exception in thread "TP-Processor21" java.lang.OutOfMemoryError: PermGen
space

Exception in thread "TP-Processor28" java.lang.OutOfMemoryError: PermGen
space

Exception in thread "TP-Processor27" java.lang.OutOfMemoryError: PermGen
space

Exception in thread "TP-Processor26" java.lang.OutOfMemoryError: PermGen
space

Exception in thread "TP-Processor25" java.lang.OutOfMemoryError: PermGen
space

Exception in thread "TP-Processor32" java.lang.OutOfMemoryError: PermGen
space


Exception in thread "TP-Processor30" Exception in thread 
"TP-Processor29"

Exception in thread "TP-Processor31" java.lang.OutOfMemoryError: PermGen
space

java.lang.OutOfMemoryError: PermGen space

java.lang.OutOfMemoryError: PermGen space

Exception in thread "TP-Processor36" java.lang.OutOfMemoryError: PermGen
space

Exception in thread "TP-Processor35" java.lang.OutOfMemoryError: PermGen
space

Exception in thread "TP-Processor34" java.lang.OutOfMemoryError: PermGen
space

Exception in thread "TP-Processor33" java.lang.OutOfMemoryError: PermGen
space


Exception in thread "TP-Processor39" Exception in thread 
"TP-Processor37"

java.lang.OutOfMemoryError: PermGen space

Exception in thread "TP-Processor40" java.lang.OutOfMemoryError: PermGen
space

Exception in thread "TP-Processor38" java.lang.OutOfMemoryError: PermGen
space

java.lang.OutOfMemoryError: PermGen space

Exception in thread "TP-Processor44" java.lang.OutOfMemoryError: PermGen
space

Exception in thread "TP-Processor43" java.lang.OutOfMemoryError: PermGen
space


Exception in thread "TP-Processor41" Exception in thread 
"TP-Processor48"

java.lang.OutOfMemoryError: PermGen space

java.lang.OutOfMemoryError: PermGen space

Exception in thread "TP-Processor42" java.lang.OutOfMemoryError: PermGen
space

Exception in thread "TP-Processor46" java.lang.OutOfMemoryError: PermGen
space

Exception in thread "TP-Processor47" java.lang.OutOfMemoryError: PermGen
space

Exception in thread "TP-Processor45" java.lang.OutOfMemoryError: PermGen
space

Exception in thread "TP-Processor52" java.lang.OutOfMemoryError: PermGen
space

Exception in thread "TP-Processor51" java.lang.OutOfMemoryError: PermGen
space

Exception in thread "TP-Processor50" java.lang.OutOfMemoryError: PermGen
space


 

 

 

 








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