All,
e-business 12.1.2 env
OS: Oracle Linux Server release 6.6
Linux xyz 2.6.32-300.32.3.el6uek.x86_64 #1 SMP Thu Sep 27 10:39:05 PDT 2012
x86_64 x86_64 x86_64 GNU/Linux
To address long garbage collection times and outofmemoryerrors trying to
increase heapsize for JVM
There is 13GB free on the box before running below command:
top - 13:33:49 up 77 days, 4:33, 13 users, load average: 0.10, 0.08, 0.08
Tasks: 291 total, 1 running, 290 sleeping, 0 stopped, 0 zombie
Cpu(s): 0.5%us, 0.2%sy, 0.0%ni, 99.2%id, 0.0%wa, 0.0%hi, 0.0%si,
0.0%st
Mem: 49559264k total, 36163844k used, *13395420k free*, 299616k buffers
Swap: 18841520k total, 0k used, 18841520k free, 22636024k cached
free
total used *free *shared buffers cached
Mem: 49559264 36167308 *13391956 *1364 299616 22639036
-/+ buffers/cache: 13228656 36330608
Swap: 18841520 0 18841520
java -server -verbose:gc *-Xmx2048M -Xms2048M -XX:MaxPermSize=684M* -version
java version "1.6.0_07"
Java(TM) SE Runtime Environment (build 1.6.0_07-b06)
Java HotSpot(TM) Server VM (build 10.0-b23, mixed mode)
Even if we increase by 1M after this limit it throws errors:
java -server -verbose:gc -Xmx2048M -Xms2048M -XX:MaxPermSize=685M -version
Error occurred during initialization of VM
Could not reserve enough space for object heap
*** glibc detected ***
/app/of1_dev/r12/apps/tech_st/10.1.3/appsutil/jdk/bin/java: free(): invalid
pointer: 0xf7758250 ***
wondering why it is failing when there is free RAM available.
Thanks your your time.
Regards,
Sanjeev.
