Frequent out of memory issues

Frequent out of memory issues



We are running web application with 6GB heap assigned to it. But, after

some time, it is giving out of memory.

The exception stack trace is given below.

Exception in thread

"com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#2"

java.lang.OutOfMemoryError: PermGen space

00:46:52,678 WARN ThreadPoolAsynchronousRunner:608 -

com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector@772df14c

-- APPARENT DEADLOCK!!! Creating emergency threads for unassigned pending

tasks!

00:46:52,682 WARN ThreadPoolAsynchronousRunner:624 -

com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector@772df14c

-- APPARENT DEADLOCK!!! Complete Status:

Managed Threads: 3

Active Threads: 0

Active Tasks:

Pending Tasks:

com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask@3e3e8a19

Pool thread stack traces:

Thread[com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#1,5,]

Thread[com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#0,5,]

Thread[com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#2,5,]

Exception in thread

"Task-Thread-for-com.mchange.v2.async.ThreadPerTaskAsynchronousRunner@6bbc0209"

java.lang.OutOfMemoryError: PermGen space

Exception in thread

"com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#1"

java.lang.OutOfMemoryError: PermGen space

Exception in thread

"com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#0"

java.lang.OutOfMemoryError: PermGen space

Exception in thread

"com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#2"

java.lang.OutOfMemoryError: PermGen space

Is this the problem with C3p0 Connection pool?