OracleAS: java.lang.OutOfMemoryError: Java heap space

Question

Hi all,
Now I'm using Oracle AS 10.1.3.0, and after some hours, the error "java.lang.OutOfMemoryError: Java heap space" appeared.
And this is the information of OracleAS memory when it has error:
Memory MXBean
Heap Memory Usage: init = 268,435,456(262,144K) used = 112,462,248(109,826K) committed = 396,558,336(387,264K) max = 517,013,504(504,896K)
Non-Heap Memory Usage: init = 16,973,824(16,576K) used = 98,829,840(96,513K) committed = 99,319,808(96992K) max = 167,772,160(163,840K)
Memory Pool MXBeans
Code Cache
Type: Non-heap memory
Usage: init = 196608(192K) used = 27540032(26894K) committed = 27885568(27232K) max = 33554432(32768K)
Peak Usage: init = 196608(192K) used = 27556992(26911K) committed = 27885568(27232K) max = 33554432(32768K)
PS Eden Space
Type:Heap memory
Usage:init = 22478848(21952K) used = 26278816(25662K) committed = 50069504(48896K) max = 54722560(53440K)
Peak Usage: init = 22478848(21952K) used = 57802752(56448K) committed = 57802752(56448K) max = 58589184(57216K)
Collection Usage:init = 22478848(21952K) used = 0(0K) committed = 50069504(48896K) max = 54722560(53440K)
PS Survivor Space
Type: Heap memory
Usage: init = 3670016(3584K) used = 1082080(1056K) committed = 2424832(2368K) max = 2424832(2368K)
Peak Usage: init = 3670016(3584K) used = 19857256(19391K) committed = 19857408(19392K) max = 19857408(19392K)
Collection Usage: init = 3670016(3584K) used = 1082080(1056K) committed = 2424832(2368K) max = 2424832(2368K)
PS Old Gen
Type: Heap memory
Usage: init = 238616576(233024K) used = 85108712(83113K) committed = 344064000(336000K) max = 477233152(466048K)
Peak Usage: init = 238616576(233024K) used = 477233152(466048K) committed = 477233152(466048K) max = 477233152(466048K)
Collection Usage: init = 238616576(233024K) used = 85108712(83113K) committed = 344064000(336000K) max = 477233152(466048K)
PS Perm Gen
Type: Non-heap memory
Usage: init = 16777216(16384K) used = 71289808(69618K) committed = 71434240(69760K) max = 134217728(131072K)
Peak Usage: init = 16777216(16384K) used = 71289808(69618K) committed = 71696384(70016K) max = 134217728(131072K)
Collection Usage: init = 16777216(16384K) used = 71177496(69509K) committed = 71434240(69760K) max = 134217728(131072K)
And this is runtime prarameter:
-Xrs -server -XX:MaxPermSize=128m -Xms256m -Djava.security.policy=$ORACLE_HOME/j2ee/home/config/java2.policy -Djava.awt.headless=true -Dhttp.webdir.enable=false
Any one can help me?
Rgds.

Answer 1

Think about what happens in your program. If your program loads lots of data into memory of the AS (=heap) and you have lots of users, then you can get errors like this. The obvious solution is to start raising the heapsize, but you cannot do that anymore, since you're out of physical memory.
So with the information I have seen so far, in this case you either have to buy more memory, get less users or refactor your program.