Weblogic server alway hang

Question

OS:  AIX 5.3
weblogic :10.3
jdk: ibm jdk1.6sr14
when this case was happened, I hava do patch CR370915  but this issue still exists.
I change weblogic version to 10.3 that this issue still exists.
i hava to see the havacore, as follows
         Memory Segment Analysis
Memory Type
# of Segments
Used Memory(bytes)
Used Memory(%)
Free Memory(bytes)
Free Memory(%)
Total Memory(bytes)
Internal
160
0
0
11,287,080
100
11,287,080
Object(reserved)
1
3,221,225,472
100
0
0
3,221,225,472
Class
1,291
65,529,828
94.66
3,694,784
5.34
69,224,612
JIT Code Cache
1
5,319,648
63.42
3,068,960
36.58
8,388,608
JIT Data Cache
1
2,852,232
34
5,536,376
66
8,388,608
Overall
1,454
3,294,927,180
99.29
23,587,200
0.71
3,318,514,380
I want to know  Object(reserved)   =100%,how to fix it

Answer 1

Hi ,
In order to debug weblogic server hang issues, we need to gather atleast 4 to 5 thread dumps of the wls server that is hanging , exactly during the time of issue.
This will show us as to which thread is causing the issue and will help us to fix it.
WebLogic Server Support Pattern: Generic Server Hang (Doc ID 1264286.1)
Please go through the above document which helps you to do this.
Thanks,
Sharmela