Hello Jean Francois,
Thank you for your reply! I am running Sun Java System Application Server Platform Edition 9.0_01 (build b02-p01). I'll try the jstack PID command when it happens again.
Right now, when I run the command for the "/usr/java/bin/java -client -Xmx512m -XX:NewRatio=2 -Dcom.sun.aas.defaultLogFile" (the only one I think is related to SAS) process, all the threads appear to be "WAITING" or "TIMED_WAITING", i.e.
"httpWorkerThread-4848-1" daemon prio=10 tid=0x00907c00 nid=0x32 in Object.wait() [0xf94ff000..0xf94ffa40]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0xbfaeb450> (a com.sun.enterprise.web.connector.grizzly.LinkedListPipeline)
at java.lang.Object.wait(Object.java:485)
at com.sun.enterprise.web.connector.grizzly.LinkedListPipeline.getTask(LinkedListPipeline.java:279)
- locked <0xbfaeb450> (a com.sun.enterprise.web.connector.grizzly.LinkedListPipeline)
at com.sun.enterprise.web.connector.grizzly.WorkerThread.run(WorkerThread.java:73)
(I guess that's an admin server thread - 4848 - right?)
Well, I'll wait to see what happens when the issue appears again.
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