Sun identity manager - java.lang.OutOfMemory

Question

Hi, I have one very interesting issue regarding JVM memory. I have one sun idm (version 7) application deployed in sun java web application server. I am facing JVM error - java.lang.OutOfMemory very frequently now days in production server. I am sharing you the details regarding configuration :
Their are 4 app servers - IDMAPP01 IDMAPP02 IDMAPP03 IDMAPP04
current total memory on each of the 4 app server 8 GB
memory allocated to JVM on each server 5 GB
os - solaris
admin task recon are performed only on instance - IDMAPP04
JVM setting is - -Xmx5g -Xms5g -Xmn1500m -XX:MaxPermSize=512m
Log file locations:
/var/opt/SUNWappserver/domain1/logs/vm.log
/var/opt/SUNWappserver/domain1/logs/gc.log
/opt/SUNWappserver/appserver/config/asadminenv.conf
/opt/SUNWappserver/appserver/config/asenv.conf
idm app deployment path:
/var/opt/SUNWappserver/domain1/applications/j2ee-modules/idm
logpath
/var/opt/SUNWappserver/domain1/logs/
Whenever I am getting this issue, we are restarting all the 4 server instances which is impacting business as this is prod server.
Can anyone suggest how can I solve this issue. (please suggest good performance tuning tips without increasing physical memory).
Regards,
Jimmy

Answer 1

886672 wrote:
Hi, I have one very interesting issue regarding JVM memory. I have one sun idm (version 7) application deployed in sun java web application server. I am facing JVM error - java.lang.OutOfMemory very frequently now days in production server. I am sharing you the details regarding configuration :
Their are 4 app servers - IDMAPP01 IDMAPP02 IDMAPP03 IDMAPP04
current total memory on each of the 4 app server 8 GB
memory allocated to JVM on each server 5 GB
what else is running on those servers and how much memory are those applications consuming?
os - solaris
admin task recon are performed only on instance - IDMAPP04
JVM setting is - -Xmx5g -Xms5g -Xmn1500m -XX:MaxPermSize=512mIf IDMAPP04 is doing different things from the other servers, then they should be configured differently. What garbage collector are you using?
>
Log file locations:
/var/opt/SUNWappserver/domain1/logs/vm.log
/var/opt/SUNWappserver/domain1/logs/gc.log
/opt/SUNWappserver/appserver/config/asadminenv.conf
/opt/SUNWappserver/appserver/config/asenv.confYou may want to have a loog at the gc.log file provided you have actually enabled gc logging which you should at least until you have resolved your memory problems.
>
idm app deployment path:
/var/opt/SUNWappserver/domain1/applications/j2ee-modules/idm
logpath
/var/opt/SUNWappserver/domain1/logs/
Whenever I am getting this issue, we are restarting all the 4 server instances which is impacting business as this is prod server.Why? The whole idea behind running recon on a separate server is that you can restart that one without affecting the others.
Can anyone suggest how can I solve this issue. (please suggest good performance tuning tips without increasing physical memory).
Enable gc logging and use a profiler to capture the behaviour of the jvm. You need to understand what it is doing and find where the problem area is before you can recommend what to tune.
Regards,
Jimmy