JBoss EAP 6 On JRockit - Memory Leak

hello team.
I have memory leak problem on jboss and jrockit.
My Environment :
1. OS :
CentOS release 6.4 (Final)
2. JRockit :
java version "1.6.0_45"
     Java(TM) SE Runtime Environment (build 1.6.0_45-b06)
     Oracle JRockit(R) (build R28.2.7-7-155314-1.6.0_45-20130329-0641-linux-x86_64, compiled mode)
3. Application Server:
JBoss EAP 6.2.0.GA
4. Application
Large EJB Application (100 and more EJB Beans (Stateless, Stateful, MDB, Timers and so on)
Everything works fine on older application server versions (4.3 , 4.2)
But now I have Problem
Of course I know that problem is new version - and i have discussion on JBoss forums.
but guys I have question about jrockit with you:
What is the option "Other" in memory ??
[jboss@jboss-new bin]$ jrcmd 17114 print_memusage
17114:
Total mapped                       8457864KB           (reserved=2983100KB)
-              Java heap              3145728KB           (reserved=0KB)
-              GC tables            105232KB
-          Thread stacks       46412KB           (#threads=138)
-          Compiled code       1048576KB           (used=12257KB)
-               Internal                   1480KB
-                     OS       170324KB
-                  Other       3639056KB
-            Classblocks         10496KB           (malloced=9631KB #28393)
-        Java class data       289536KB           (malloced=192391KB #133697 in 28393 classes)
- Native memory tracking     1024KB           (malloced=294KB #10)
[jboss@jboss-new bin]$
This size increases every time - and took entire amount of RAM.
Thank in Advance.
Regards,
Paata Lominadze

Not sure what the 'other' is, but it is probably best shown by using an example. By using displayMap we can display a memory map of various JVM subsystems and libraries that are loaded, including third-party libraries.
./jrcmd 4523 print_memusage displayMap
Total mapped                  3984796KB           (reserved=2978740KB)
-              Java heap       524288KB           (reserved=0KB)
-              GC tables        17548KB
-          Thread stacks        20276KB           (#threads=39)
-          Compiled code      1048576KB           (used=14224KB)
-               Internal         1672KB
-                     OS       146924KB
-                  Other      2092648KB
-            Classblocks         7424KB           (malloced=7381KB #20064)
-        Java class data       124416KB           (malloced=124411KB #91048 in 20064 classes)
- Native memory tracking         1024KB           (malloced=118KB #10)
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
    OS                          *java    r x 0x0000000000400000.(     76KB)
    OS                          *java    rw 0x0000000000612000.(      4KB)
    OS                        *[heap]    rw 0x00000000007c1000.(    132KB)
   INT                           Poll    r   0x000000007fffe000 (      4KB)
   INT                         Membar    rw 0x000000007ffff000.(      4KB)
   MSP              Classblocks (1/2)    rw 0x00000000df8c0000 (   6912KB)
   MSP              Classblocks (2/2)    rw 0x00000000dff80000 (    512KB)
HEAP                      Java heap    rw 0x00000000e0000000.( 524288KB)
    OS                    *ld-2.12.so    r x 0x0000003664400000.(    128KB)
    OS                    *ld-2.12.so    r   0x000000366461f000 (      4KB)
    OS                    *ld-2.12.so    rw 0x0000003664620000 (      4KB)
    OS                   **ld-2.12.so    rw 0x0000003664621000.(      4KB)
   OS           *gconv-modules.cache    r   0x00007f8f2e4a0000 (     28KB)
THREAD                     Stack 4630    rwx 0x00007f8f2e4a7000 (      8KB)
THREAD                     Stack 4630        0x00007f8f2e4a9000 (     12KB)
THREAD                     Stack 4630    rwx 0x00007f8f2e4ac000 (    244KB)
   MSP         Java class data (5/37)    rw 0x00007f8f2e4e9000 ( 14336KB)
   MSP         Java class data (9/37)    rw 0x00007f8f2fa40000 (   5888KB)
                                         rw 0x00007f8f30000000 (    188KB)
                                             0x00007f8f3002f000 ( 65348KB)
                                         rw 0x00007f8f34000000 (    132KB)
                                             0x00007f8f34021000 ( 65404KB)
                                         rw 0x00007f8f38000000 (    412KB)
                                             0x00007f8f38067000.( 65124KB)
   MSP        Java class data (10/37)    rw 0x00007f8f3c034000 ( 34048KB)
                                         rw 0x00007f8f3e174000 (   8200KB)
   MSP        Java class data (11/37)    rw 0x00007f8f3e976000 (    256KB)
    OS                     *libhpi.so    rw 0x00007f8fb37fc000 (      8KB)
    OS                    **libhpi.so    rw 0x00007f8fb37fe000 (      4KB)
CODE                  Compiled code    rwx 0x00007f8fb37ff000 (     64KB)
CODE                  Compiled code    rwx 0x00007f8fb380f000 (    128KB)
CODE                  Compiled code    rwx 0x00007f8fb382f000 (     64KB)
MSP        Java class data (37/37)    rw 0x00007f8ff83a1000 (    512KB)
    GC Modified Union Set (committed)    rw 0x00007f8ff8421000 (    132KB)
    GC                     Card table    rw 0x00007f8ff8442000 (   1024KB)
    GC        Object bits (committed)    rw 0x00007f8ff8542000 (   8196KB)
Here
- thread is thread related (such as thread stacks)
- int, internal use (such as pointer pages)
- heap, chunk used by JRockit for the Java heap
- os, mapped directly from the operating system, such as third party DLLs or shared objects
- msp, memory space. a memory space is a native heap with a specific purpose, for example native memory allocation inside the JVM
- gc, garbage collection related, for example live bits
- code, compiled code
The 'other' memory space looks to me (from the blank entries in the above print-out) like they are a memory pages to are still not used. When the JVM starts it mappes an amount of memory. To my knowledge JRockit uses mmap (mmap(2) - Linux manual page), which creates a new mapping in the virtual address space. JRockit reserves an amount of memory (Java Heap (heap where your object instances go) + its own runtime (all the others)).
To see where the growth is in the various memory spaces, you can use 'print_memusage baseline', after which you can execute print_memusage again, for example,
./jrcmd 4523 print_memusage scale=M
4523:
Total mapped                     3896MB      +4MB (reserved=2905MB -3MB)
-              Java heap          512MB           (reserved=0MB)
-              GC tables           17MB
-          Thread stacks           19MB           (#threads=39)
-          Compiled code         1024MB           (used=14MB +1MB)
-               Internal            1MB
-                     OS          143MB
-                  Other         2043MB
-            Classblocks            7MB           (malloced=7MB #20596 +532)
-        Java class data          126MB      +4MB (malloced=125MB +4MB #93640 +2592 in 20596 classes)
- Native memory tracking            1MB           (malloced=0MB #20 +10)
Note the additional column that prints out the difference in memory usage in relation to the baseline. You can also monitor native allocations by using trace_alloc_sites, memory allocations can then be displayed with different levels of detail using the level argument.
./jrcmd 4523 print_memusage trace_alloc_sites=true
4523:
Total mapped                  3989660KB   +4864KB (reserved=2974732KB -4008KB)
-              Java heap       524288KB           (reserved=0KB)
-              GC tables        17548KB
-          Thread stacks        20276KB           (#threads=39)
-          Compiled code      1048576KB           (used=15265KB +1040KB)
-               Internal         1672KB
-                     OS       146924KB
-                  Other      2092648KB
-            Classblocks         7680KB    +256KB (malloced=7669KB +287KB #20596 +532)
-        Java class data       129024KB   +4608KB (malloced=128967KB +4555KB #93640 +2592 in 20596 classes)
- Native memory tracking         1024KB           (malloced=236KB +118KB #20 +10)
./jrcmd 4523 print_memusage level=3
4523:
Total mapped                  3989660KB   +4864KB (reserved=2974732KB -4008KB)
-              Java heap       524288KB           (reserved=0KB)
-              GC tables        17548KB
-          Thread stacks        20276KB           (#threads=39)
-          Compiled code      1048576KB           (used=15265KB +1040KB)
-               Internal         1672KB
-                     OS       146924KB
-                  Other      2092648KB
-            Classblocks         7680KB    +256KB (malloced=2KB -7379KB #4 -20060) Not fully traced
-        Java class data       129024KB   +4608KB (malloced=26KB -124385KB #16 -91032 in 20596 classes) Not fully traced.
- Native memory tracking         1024KB           (malloced=118KB #10) Not fully traced.
     gather_memorymap_database                     memtrace.c: 206         91KB     +91KB (#1 +1)
           gather_memory_usage                  osal_mspace.c:5142          7KB      +7KB (#4 +4)
msGatherMSpacesUsageDatabase                  osal_mspace.c:6128          2KB      +2KB (#1 +1)
msGatherMSpacesUsageDatabase                  osal_mspace.c:6134         16KB     +16KB (#1 +1)
Note this is more on the JVM level, in your case in might be beneficial to investigate what is happening on the java heap. By using print_object_summary you can get insight how memory on the heap is used on a per-class basis. To get to the bottom of where the memory leak is you can use the memory-leak-detector (an example of its use can be found here Middleware Snippets: Fast, Faster, JRockit). You can also obtain a heapdump that can be analyzed by using for example MAT (see for an example here Middleware Snippets: Visualizing Class Loading). To obtain a heapdump you can run the command, for example,
[weblogic@machine1 bin]$ ./jrcmd 4523 runsystemgc full=true fullcompact=true
4523:
[weblogic@machine1 bin]$ ./jrcmd 4523 hprofdump filename=/home/weblogic/dump.hprof
4523:
Wrote dump to /home/weblogic/dump.hprof
Note that this first issues a full GC by using the runsystemgc command.

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######################## MXML##########################
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>
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Memory leak within FOProcessor class

Hi all,
I'm trying to use the XML Publisher API (5.6.2 and 5.6.3) to generate PDF documents from XSL templates and XML data in a J2EE environment (Jboss 4.0.5) with Struts but a memory leak occurs.
It seems not to be a multithreading issue because the leak is there even if the PDF documents are generated one by one.
I made many tests to isolate the leak and I have simplified my code as much as possible: it seems to happen within the FOProcessor class.
One of the tests generates 4,500 PDF documents (one at a time) from an XML file (3 KB) and an XSL file (74 KB with blanks). Nothing else is done with the Jboss server during this test. The XSL file was created before the test from a RTF file with XML Publisher. The memory leak is around 70 KB for each PDF document (around 300 MB for the whole test).
As you can see below from the heap histogram (taken at end of test after a full garbage collection) it seems that the XSL and XML elements/attributes are not released (and thus never garbage collected).
Did I miss something or is there an actual problem with the XML/XSL parsing within the XML Publisher API?
Thanks for your help.

Object Histogram:
Size    Count     Class description
131376968 2353450 java.lang.Object[]
60389464 937300 char[]
48260304 335141 oracle.xml.parser.v2.XSLResultElement
35690000 2230625 oracle.xml.util.FastVector
24127104 1005296 java.lang.String
16539120 413478 oracle.xml.parser.v2.XSLNode$AttrValueTmpl
14757064 128058 int[]
13348768 417149 java.lang.ref.Finalizer
12701776 102220 * ConstMethodKlass
12544808 23433   byte[]
12204080 108965 oracle.xml.parser.v2.XSLText
8344600 86584   java.util.Hashtable$Entry[]
7363768 102220 * MethodKlass
5592784 138700 * SymbolKlass
5362256 335141 oracle.xml.parser.v2.XSLAttributeSet[]
5267336 8135    * ConstantPoolKlass
5234016 163563 java.util.TreeMap$Entry
5121744 213406 java.util.Hashtable$Entry
4900480 61256   oracle.xml.parser.v2.XPathStep
4087120 51089   java.lang.reflect.Method
3823216 40276   java.util.HashMap$Entry[]
3524696 8135    * InstanceKlassKlass
3378000 84450   java.util.Hashtable
3064872 127703 java.util.HashMap$Entry
2971904 6880    * ConstantPoolCacheKlass
2968560 26505   oracle.xml.parser.v2.XSLValueOf
2770656 24738   oracle.xml.parser.v2.XSLVariable
2167520 27094   oracle.xml.parser.v2.XPathFunctionCall
1880088 33573   oracle.xml.parser.v2.PathExpr
1726360 61482   java.lang.String[]
1573720 39343   java.util.HashMap
1476576 30762   oracle.xml.parser.v2.XSLExprValue
1460840 36521   java.util.TreeMap
1319360 23560   oracle.xml.parser.v2.XPathConstantExpr
1054976 16484   org.jboss.mx.server.InvocationContext
1001264 3546    * MethodDataKlass
887424 11049   short[]
835680 8705    java.lang.Class
830208 25944   oracle.xml.util.NSNameImpl
705816 29409   java.util.ArrayList
684152 4501    org.jboss.web.tomcat.tc5.session.SessionBasedClusteredSession
670288 14071   java.lang.Object[]
640832 10013   oracle.xml.parser.v2.XPathVarReference
561056 35066   javax.management.modelmbean.DescriptorSupport
556272 23178   EDU.oswego.cs.dl.util.concurrent.ConcurrentReaderHashMap$Entry
552984 30451   java.lang.Class[]
494760 2945    oracle.xml.parser.v2.XSLTemplate
480792 20033   antlr.ANTLRHashString
442576 27661   java.lang.Integer
432096 4501    org.jboss.web.tomcat.statistics.ReplicationStatistics$TimeStatistic
429040 10726   org.hibernate.hql.ast.tree.Node
369880 9247    javax.management.modelmbean.ModelMBeanOperationInfo
312384 19524   java.util.TreeMap$3
305368 5453    java.net.URL
287392 8981    org.jboss.mx.interceptor.ReflectedDispatcher
259264 338     EDU.oswego.cs.dl.util.concurrent.ConcurrentReaderHashMap$Entry[]
252280 4505    org.jboss.cache.lock.ReadWriteLockWithUpgrade
238600 5965    org.jboss.mx.interceptor.PersistenceInterceptor
238600 5965    org.jboss.mx.interceptor.AttributeDispatcher
236616 9859    org.jboss.mx.server.AbstractMBeanInvoker$OperationKey
219776 3434    java.lang.reflect.Constructor
206880 6465    javax.management.modelmbean.ModelMBeanAttributeInfo
193168 2259    java.lang.reflect.Method[]
173184 5412    java.lang.ref.SoftReference
164920 589     oracle.xml.parser.v2.XSLStylesheet
164464 541     * ObjArrayKlassKlass
152832 6368    org.dom4j.tree.DefaultAttribute
149472 2076    java.lang.reflect.Field
144160 4505    org.jboss.cache.Node
143160 5965    org.jboss.mx.interceptor.ModelMBeanAttributeInterceptor
140600 3515    org.apache.xerces.dom.DeferredTextImpl
140224 2740    javax.management.modelmbean.ModelMBeanAttributeInfo[]
139056 7658    boolean[]
134664 3359    java.lang.String[][]
131936 1178    oracle.xml.parser.v2.XSLCondition
131936 1178    oracle.xml.parser.v2.XSLForEach
129072 2668    javax.management.modelmbean.ModelMBeanOperationInfo[]
128952 5373    EDU.oswego.cs.dl.util.concurrent.ConcurrentHashMap$Entry
124776 1733    org.hibernate.hql.ast.tree.IdentNode
115200 1800    javax.management.modelmbean.ModelMBeanInfoSupport
113088 2356    oracle.xml.parser.v2.AdditiveExpr
109416 4559    java.beans.PropertyChangeSupport
108960 1135    java.io.ObjectStreamClass
108120 4505    org.jboss.cache.lock.IdentityLock
105864 345     long[]
98752   3086    java.io.ObjectStreamClass$WeakClassKey
97968   4082    java.util.Vector
96672   2014    java.util.Properties
94240   589     oracle.xml.parser.v2.XSLOutput
90072   3753    javax.management.ObjectName$Property
87432   3643    javax.management.MBeanParameterInfo
82368   858     org.hibernate.hql.ast.tree.DotNode
81248   5078    java.lang.Long
78656   1229    org.hibernate.mapping.Column
77664   4854    java.util.Collections$SynchronizedSet
77448   3227    java.util.LinkedList$Entry
73824   769     org.jboss.mx.modelmbean.XMBean
73536   4596    java.util.Hashtable$KeySet
72144   4509    EDU.oswego.cs.dl.util.concurrent.CopyOnWriteArraySet
72144   4509    EDU.oswego.cs.dl.util.concurrent.CopyOnWriteArrayList
72144   4509    org.jboss.cache.Fqn
72080   4505    org.jboss.cache.lock.ReadWriteLockWithUpgrade$WriterLock
72080   4505    org.jboss.cache.lock.LockStrategyRepeatableRead
72080   4505    org.jboss.cache.lock.ReadWriteLockWithUpgrade$ReaderLock
72080   4505    org.jboss.cache.lock.LockMap
72016   4501    org.apache.catalina.session.StandardSessionFacade
71776   4486    java.io.FileDescriptor
70680   589     oracle.xml.parser.v2.XSLCallTemplate
70680   589     oracle.xml.parser.v2.XSLApplyTemplates
70224   154     org.hibernate.persister.entity.SingleTableEntityPersister
68296   2774    javax.management.ObjectName$Property[]
68160   1065    org.apache.xerces.dom.DeferredElementNSImpl
67760   770     org.hibernate.loader.entity.EntityLoader
66992   19      EDU.oswego.cs.dl.util.concurrent.ConcurrentHashMap$Entry[]
65968   1178    oracle.xml.parser.v2.XPathFilterExpr
65968   589     oracle.xml.parser.v2.XMLUTF8Reader
64432   4027    java.util.HashSet
63648   1326    oracle.xml.parser.v2.XMLNode[]
63440   1586    org.hibernate.loader.DefaultEntityAliases
61256   589     oracle.xml.parser.v2.XSLNode
61256   589     oracle.xml.parser.v2.XMLReader
60816   2534    org.apache.xerces.xni.QName
57360   478     org.hibernate.hql.ast.tree.FromElement
56976   1187    org.hibernate.mapping.Property
56544   1178    oracle.xml.parser.v2.XSLNodeSetExpr
56544   1178    oracle.xml.parser.v2.MultiplicativeExpr
56544   1178    oracle.xml.parser.v2.EqualExpr
54384   618     oracle.xml.parser.v2.XMLError
49392   2783    javax.management.MBeanParameterInfo[]
47648   1489    java.util.LinkedHashMap$Entry
47120   589     oracle.xml.parser.v2.XMLByteReader[]
...

Memory Leak in Linux OS

Using JNI1.2 for C++ and JAVA communication. And the Java application is a multithread application and monitoring JBoss application server using JMX. In each 5 minute interval the C++ application is invoking a method of java class and for each method call its creating a thread and retrieving the value from JBoss.
the Code in run method of thread is as follows
Object obj = context.lookup( "ejb/mgmt/MEJB" );
ManagementHome home = (ManagementHome) PortableRemoteObject.narrow(obj,ManagementHome.class);
server = home.create();
//after that am retrieving the value
But for each iteration the memory is increasing by 2MB of JVM . Its looks like a memory leak in JVM. The JVM version am using is 1.4.2.6.
Could any one suggest me what may be the problem. THis problem is not occuring in Window OS.
Thanks in advance.

The JVM version am using is 1.4.2.6.Give it a try with 1.4.2_08.

New Memory Leak Detector released

This week we released an updated version of the Memory Leak Detector. It now features a much improved graphical user interface as well as more powerful ways to track down memory leaks.
The tool is designed to help you find memory leaks in production type environments without causing much overhead. It allows you to attach to a running JRockit process, analyze the heap, and detach, leaving the process running at full speed again.
There is an article on dev2dev which describes the tool in more detail: http://dev2dev.bea.com/pub/a/2005/06/memory_leaks.html
Download the free tool today at: http://dev2dev.bea.com/wljrockit/tools.html
Comments are always welcome here in the forum.
Regards,
/Staffan Larsen

FYI, the console ist providing this stack trace in the details window:
java.io.IOException: Unsupported JVM on host 'localhost' at port 7090.
Make sure you are running the correct version of JRockit.
     at com.jrockit.memleak.model_impl.MemleakUtil.handleConnectionException(Unknown Source)
     at com.jrockit.memleak.model_impl.MemleakUtil.doConnect(Unknown Source)
     at com.jrockit.memleak.model_impl.MemleakUtil.access$000(Unknown Source)
     at com.jrockit.memleak.model_impl.MemleakUtil$1.run(Unknown Source)
     at foxtrot.AbstractWorkerThread$2.run(AbstractWorkerThread.java:49)
     at java.security.AccessController.doPrivileged(Native Method)
     at foxtrot.AbstractWorkerThread.runTask(AbstractWorkerThread.java:45)
     at foxtrot.workers.DefaultWorkerThread.run(DefaultWorkerThread.java:153)
     at java.lang.Thread.run(Unknown Source)
Caused by: javax.naming.CommunicationException [Root exception is java.rmi.ConnectIOException: error during JRMP connection establishment; nested exception is:
     java.io.EOFException]
     at com.sun.jndi.rmi.registry.RegistryContext.lookup(Unknown Source)
     at com.sun.jndi.toolkit.url.GenericURLContext.lookup(Unknown Source)
     at javax.naming.InitialContext.lookup(Unknown Source)
     at javax.management.remote.rmi.RMIConnector.findRMIServerJNDI(Unknown Source)
     at javax.management.remote.rmi.RMIConnector.findRMIServer(Unknown Source)
     at javax.management.remote.rmi.RMIConnector.connect(Unknown Source)
     at javax.management.remote.rmi.RMIConnector.connect(Unknown Source)
     at com.jrockit.memleak.comm.RemoteMLSController.getServerConnection(RemoteMLSController.java:152)

Memory Leak WSEndpointImpl

Hi all,
using R28.1.3-11-141760-1.6.0_24-20110301-1432-linux-x86_64 of jrockit we experience a memory leak in production. So far I only got to obtain an hprof dump, which I analyzed with eclipse MAT. I'm trying to obtain a flight recording as well but I'm not sure if this will shed more light on the problem. The MAT result is pretty clear but I'm not sure what the cause is. There's one object of com.sun.xml.ws.server.WSEndpointImpl with a growing retained heap, at the moment of the memory dump it was 929 MB. Here's the import part of the dominator tree:
Class Name | Shallow Heap | Retained Heap | Percentage
com.sun.xml.ws.server.WSEndpointImpl @ 0xafaf0f70 | 176 | 929.780.784 | 69,61%
|- com.sun.xml.ws.binding.SOAPBindingImpl @ 0xafaf1160 | 72 | 929.046.360 | 69,56%
| |- com.sun.xml.ws.binding.WebServiceFeatureList @ 0xafaf13e0 | 56 | 929.044.320 | 69,56%
| | '- java.util.HashMap @ 0xafaf1e58 | 80 | 929.044.264 | 69,56%
| | |- java.util.HashMap$Entry[16] @ 0xafaf3058 | 152 | 929.044.160 | 69,56%
| | | |- java.util.HashMap$Entry @ 0xaf9b8f48 | 48 | 928.998.912 | 69,55%
| | | | '- weblogic.wsee.jaxws.EndpointCreationInterceptorFeature @ 0xaf9b8f80| 32 | 928.998.864 | 69,55%
| | | | '- java.util.HashSet @ 0xaf9b92f8 | 24 | 928.998.832 | 69,55%
| | | | '- java.util.HashMap @ 0xaf9b9528 | 80 | 928.998.808 | 69,55%
| | | | |- java.util.HashMap$Entry[32768] @ 0x9462cb88 | 262.168 | 928.998.704 | 69,55%
| | | | | |- weblogic.wsee.jaxws.ServerLateInitTube @ 0x9b672ae8 | 40 | 152.104 | 0,01%
| | | | | |- weblogic.wsee.jaxws.ServerLateInitTube @ 0xad2a9360 | 40 | 152.104 | 0,01%
| | | | | |- weblogic.wsee.jaxws.ServerLateInitTube @ 0xa3949490 | 40 | 152.104 | 0,01%
| | | | | |- weblogic.wsee.jaxws.ServerLateInitTube @ 0xa3a332c8 | 40 | 152.104 | 0,01%
| | | | | |- weblogic.wsee.jaxws.ServerLateInitTube @ 0x954ef698 | 40 | 151.440 | 0,01%
| | | | | |- weblogic.wsee.jaxws.ServerLateInitTube @ 0xb3acff18 | 40 | 148.256 | 0,01%
| | | | | |- weblogic.wsee.jaxws.ServerLateInitTube @ 0xa1db8a38 | 40 | 148.000 | 0,01%
| | | | | |- weblogic.wsee.jaxws.ServerLateInitTube @ 0xb9d18ee8 | 40 | 148.000 | 0,01%
| | | | | |- weblogic.wsee.jaxws.ServerLateInitTube @ 0xbe6bf4d0 | 40 | 147.896 | 0,01%
| | | | | |- weblogic.wsee.jaxws.ServerLateInitTube @ 0xa0397080 | 40 | 147.896 | 0,01%
| | | | | |- weblogic.wsee.jaxws.ServerLateInitTube @ 0xbf6693f0 | 40 | 147.896 | 0,01%
| | | | | |- weblogic.wsee.jaxws.ServerLateInitTube @ 0xc3c4ddb0 | 40 | 143.792 | 0,01%
| | | | | |- weblogic.wsee.jaxws.ServerLateInitTube @ 0x82714140 | 40 | 143.792 | 0,01%
| | | | | |- weblogic.wsee.jaxws.ServerLateInitTube @ 0xa0347178 | 40 | 143.792 | 0,01%
| | | | | |- weblogic.wsee.jaxws.ServerLateInitTube @ 0x919c9948 | 40 | 143.688 | 0,01%
| | | | | |- weblogic.wsee.jaxws.ServerLateInitTube @ 0xbb1f6d28 | 40 | 135.960 | 0,01%
| | | | | |- weblogic.wsee.jaxws.ServerLateInitTube @ 0x8c3cd118 | 40 | 135.488 | 0,01%
| | | | | |- weblogic.wsee.jaxws.ServerLateInitTube @ 0x91d6e950 | 40 | 134.936 | 0,01%
| | | | | |- weblogic.wsee.jaxws.ServerLateInitTube @ 0x8abefe80 | 40 | 134.936 | 0,01%
| | | | | |- weblogic.wsee.jaxws.ServerLateInitTube @ 0x89f0aaa8 | 40 | 134.736 | 0,01%
| | | | | |- weblogic.wsee.jaxws.ServerLateInitTube @ 0xb0f116a8 | 40 | 134.600 | 0,01%
| | | | | |- weblogic.wsee.jaxws.ServerLateInitTube @ 0x9da69938 | 40 | 134.392 | 0,01%
| | | | | |- weblogic.wsee.jaxws.ServerLateInitTube @ 0x96cae018 | 40 | 134.392 | 0,01%
| | | | | |- weblogic.wsee.jaxws.ServerLateInitTube @ 0x88691950 | 40 | 134.040 | 0,01%
| | | | | |- weblogic.wsee.jaxws.ServerLateInitTube @ 0xc201f268 | 40 | 134.040 | 0,01%
| | | | | '- Total: 25 of 36.803 entries | | |
I would appreciate any hints on how to proceed as these are standard java / weblogic classes. If I drill down into the objects I see some ErrorHandler objects, so these objects might accumulate with erroneus requests, but I'm not positive on this since I only checked a few instances. Before I start to try to reproduce this on a test environment I would like to ask for your help.
Kind regards,
Thomas
PS: Sorry, this is probably not really jrockit related, but I know here are some java experts ;)

Hi Marcus,
thanks. The FlightRecording did not help, the allocation pressure is not high enough. I eventually fired up memleak and found the following allocation trace, which doesn't help me a lot. I will post in WLS forums.
Trace     Type     Type ID     Class Loader     Class Loader ID     Percent(%)     Count
weblogic.wsee.jaxws.ServerLateInitTube.copy(TubeCloner)     weblogic.wsee.jaxws.ServerLateInitTube     98     sun.misc.Launcher$AppClassLoader<0>     0     100     17
weblogic.wsee.jaxws.ServerLateInitTube.copy(TubeCloner)     weblogic.wsee.jaxws.ServerLateInitTube     98     sun.misc.Launcher$AppClassLoader<0>     0     100     17
com.sun.xml.ws.api.pipe.PipeClonerImpl.copy(Tube)     com.sun.xml.ws.api.pipe.PipeClonerImpl     15773     sun.misc.Launcher$AppClassLoader<0>     0     100     17
weblogic.wsee.jaxws.ServerLateInitTube.<init>(ServerLateInitTube, TubeCloner)     weblogic.wsee.jaxws.ServerLateInitTube     98     sun.misc.Launcher$AppClassLoader<0>     0     100     17
weblogic.wsee.jaxws.ServerLateInitTube.copy(TubeCloner)     weblogic.wsee.jaxws.ServerLateInitTube     98     sun.misc.Launcher$AppClassLoader<0>     0     100     17
weblogic.wsee.jaxws.ServerLateInitTube.copy(TubeCloner)     weblogic.wsee.jaxws.ServerLateInitTube     98     sun.misc.Launcher$AppClassLoader<0>     0     100     17
com.sun.xml.ws.api.pipe.PipeClonerImpl.copy(Tube)     com.sun.xml.ws.api.pipe.PipeClonerImpl     15773     sun.misc.Launcher$AppClassLoader<0>     0     100     17
com.sun.xml.ws.api.pipe.helper.AbstractFilterTubeImpl.<init>(AbstractFilterTubeImpl, TubeCloner)     com.sun.xml.ws.api.pipe.helper.AbstractFilterTubeImpl     15774     sun.misc.Launcher$AppClassLoader<0>     0     100     17
weblogic.wsee.jaxws.tubeline.standard.WseeServerTube.<init>(WseeServerTube, TubeCloner)     weblogic.wsee.jaxws.tubeline.standard.WseeServerTube     2450     sun.misc.Launcher$AppClassLoader<0>     0     100     17
weblogic.wsee.jaxws.tubeline.standard.WseeServerTube.copy(TubeCloner)     weblogic.wsee.jaxws.tubeline.standard.WseeServerTube     2450     sun.misc.Launcher$AppClassLoader<0>     0     100     17
weblogic.wsee.jaxws.tubeline.standard.WseeServerTube.copy(TubeCloner)     weblogic.wsee.jaxws.tubeline.standard.WseeServerTube     2450     sun.misc.Launcher$AppClassLoader<0>     0     100     17
com.sun.xml.ws.api.pipe.PipeClonerImpl.copy(Tube)     com.sun.xml.ws.api.pipe.PipeClonerImpl     15773     sun.misc.Launcher$AppClassLoader<0>     0     100     17
com.sun.xml.ws.api.pipe.TubeCloner.clone(Tube)     com.sun.xml.ws.api.pipe.TubeCloner     15776     sun.misc.Launcher$AppClassLoader<0>     0     100     17
com.sun.xml.ws.server.WSEndpointImpl$2.<init>(WSEndpointImpl)     com.sun.xml.ws.server.WSEndpointImpl$2     15319     sun.misc.Launcher$AppClassLoader<0>     0     100     17
com.sun.xml.ws.server.WSEndpointImpl.createPipeHead()     com.sun.xml.ws.server.WSEndpointImpl     2523     sun.misc.Launcher$AppClassLoader<0>     0     100     17
com.sun.xml.ws.api.server.Adapter$Toolkit.<init>(Adapter)     com.sun.xml.ws.api.server.Adapter$Toolkit     15770     sun.misc.Launcher$AppClassLoader<0>     0     100     17
com.sun.xml.ws.transport.http.HttpAdapter$HttpToolkit.<init>(HttpAdapter)     com.sun.xml.ws.transport.http.HttpAdapter$HttpToolkit     15306     sun.misc.Launcher$AppClassLoader<0>     0     100     17
com.sun.xml.ws.transport.http.HttpAdapter.createToolkit()     com.sun.xml.ws.transport.http.HttpAdapter     15467     sun.misc.Launcher$AppClassLoader<0>     0     100     17
com.sun.xml.ws.transport.http.HttpAdapter.createToolkit()     com.sun.xml.ws.transport.http.HttpAdapter     15467     sun.misc.Launcher$AppClassLoader<0>     0     100     17
com.sun.xml.ws.api.server.Adapter$1.create()     com.sun.xml.ws.api.server.Adapter$1     2807     sun.misc.Launcher$AppClassLoader<0>     0     100     17
com.sun.xml.ws.api.server.Adapter$1.create()     com.sun.xml.ws.api.server.Adapter$1     2807     sun.misc.Launcher$AppClassLoader<0>     0     100     17
com.sun.xml.ws.util.Pool.take()     com.sun.xml.ws.util.Pool     15771     sun.misc.Launcher$AppClassLoader<0>     0     100     17
com.sun.xml.ws.transport.http.HttpAdapter.handle(WSHTTPConnection)     com.sun.xml.ws.transport.http.HttpAdapter     15467     sun.misc.Launcher$AppClassLoader<0>     0     100     17
com.sun.xml.ws.transport.http.servlet.ServletAdapter.handle(ServletContext, HttpServletRequest, HttpServletResponse)     com.sun.xml.ws.transport.http.servlet.ServletAdapter     3251     sun.misc.Launcher$AppClassLoader<0>     0     100     17
com.sun.xml.ws.transport.http.servlet.WSServletDelegate.doGet(HttpServletRequest, HttpServletResponse, ServletContext)     com.sun.xml.ws.transport.http.servlet.WSServletDelegate     4388     sun.misc.Launcher$AppClassLoader<0>     0     100     17
com.sun.xml.ws.transport.http.servlet.WSServletDelegate.doPost(HttpServletRequest, HttpServletResponse, ServletContext)     com.sun.xml.ws.transport.http.servlet.WSServletDelegate     4388     sun.misc.Launcher$AppClassLoader<0>     0     100     17
com.sun.xml.ws.transport.http.servlet.WSServlet.doPost(HttpServletRequest, HttpServletResponse)     com.sun.xml.ws.transport.http.servlet.WSServlet     4743     sun.misc.Launcher$AppClassLoader<0>     0     100     17
javax.servlet.http.HttpServlet.service(HttpServletRequest, HttpServletResponse)     javax.servlet.http.HttpServlet     15468     sun.misc.Launcher$AppClassLoader<0>     0     100     17
javax.servlet.http.HttpServlet.service(ServletRequest, ServletResponse)     javax.servlet.http.HttpServlet     15468     sun.misc.Launcher$AppClassLoader<0>     0     100     17
weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run()     weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction     15469     sun.misc.Launcher$AppClassLoader<0>     0     100     17
weblogic.servlet.internal.StubSecurityHelper.invokeServlet(ServletRequest, HttpServletRequest, ServletRequestImpl, ServletResponse, HttpServletResponse, Servlet)     weblogic.servlet.internal.StubSecurityHelper     1044     sun.misc.Launcher$AppClassLoader<0>     0     100     17
weblogic.servlet.internal.ServletStubImpl.execute(ServletRequest, ServletResponse, FilterChainImpl)     weblogic.servlet.internal.ServletStubImpl     907     sun.misc.Launcher$AppClassLoader<0>     0     100     17
weblogic.servlet.internal.ServletStubImpl.execute(ServletRequest, ServletResponse)     weblogic.servlet.internal.ServletStubImpl     907     sun.misc.Launcher$AppClassLoader<0>     0     100     17
weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.wrapRun(ServletStubImpl, HttpServletRequest, HttpServletResponse)     weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction     15310     sun.misc.Launcher$AppClassLoader<0>     0     100     17
weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run()     weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction     15310     sun.misc.Launcher$AppClassLoader<0>     0     100     17
weblogic.security.acl.internal.AuthenticatedSubject.doAs(AbstractSubject, PrivilegedAction)     weblogic.security.acl.internal.AuthenticatedSubject     2125     sun.misc.Launcher$AppClassLoader<0>     0     100     17
weblogic.security.service.SecurityManager.runAs(AuthenticatedSubject, AuthenticatedSubject, PrivilegedAction)     weblogic.security.service.SecurityManager     15464     sun.misc.Launcher$AppClassLoader<0>     0     100     17
weblogic.servlet.internal.WebAppServletContext.securedExecute(HttpServletRequest, HttpServletResponse, boolean)     weblogic.servlet.internal.WebAppServletContext     1108     sun.misc.Launcher$AppClassLoader<0>     0     100     17
weblogic.servlet.internal.WebAppServletContext.execute(ServletRequestImpl, ServletResponseImpl)     weblogic.servlet.internal.WebAppServletContext     1108     sun.misc.Launcher$AppClassLoader<0>     0     100     17
weblogic.servlet.internal.ServletRequestImpl.run()     weblogic.servlet.internal.ServletRequestImpl     67     sun.misc.Launcher$AppClassLoader<0>     0     100     17
weblogic.work.ExecuteThread.execute(Runnable)     weblogic.work.ExecuteThread     1085     sun.misc.Launcher$AppClassLoader<0>     0     100     17
weblogic.work.ExecuteThread.run()     weblogic.work.ExecuteThread     1085     sun.misc.Launcher$AppClassLoader<0>     0     100     17
Kind regards,
Thomas

JSF (RI) app hot-deploy memory leak

I have a standard JSF (RI) based web app that appears to be working just fine in terms of functionality. However, I believe that there is a memory leak associated with the sort of frequent hot-deploy cycles that are typical during a normal development cycle. I have been monitoring the app via the jvmstat 3.0 tools and have witnessed NO memory growth in the young or old generation areas - regardless of useage pattern. All of the growth seems to happen in the perm area of memory and be directly coincidental with the occurence of a deploy. Eventually, continued hot-deply cycles will result in an OutOfMemory error on the container - please note that continued and extensive use of the app WITHOUT the aforementioned hot-deploys does NOT result in the OutOfMemory error.
From my research so far, I have discovered the following thread:
http://forum.hibernate.org/viewtopic.php?t=935948&postdays=0&postorder=asc&start=75
It refers to a similar problem with hiberate (which I am NOT using) as well as a commons-logging and several others. From the looks of it, I strongly suspect that there may be an issue with JSF when it's implementation is bundled inside the WEB-INF/lib dir - i.e. inside the specific web app's ClassLoader.
Based on the above, I have implemented a SessionContextListener that invokes the org.apache.commons.logging.LogFactory.release() inside the contextDestroyed( ServletContextEvent e ) method. This does appear to free up some perm memory but there is still large growth that appears to be directly related to the FacesServlet initialization (navigation handlers, etc). I looked into calling the FacesContext.release() method which seems to have purpose similar to that of the LogFactory.release() method. However, at the time of the contextDestroyed() invocation, FacesContext.getCurrentInstance() always returns null, so I do not ever have an opportunity to invoke the release method that I am aware of. If my suspicions are correct, than I would likely be able to avoid this problem entirely by simply placing the JSF implementation jars in the conatiner's shared lib dir - instead of bundling it inside WEB-INF/lib. However, this is not an option for this container as multiple web apps (which require the flexibility to use differing JSF implementations and versions - i.e. RI vs MyFaces, etc) will run on this container.
I don't believe it is at all related to the problem at hand, but my container is JBoss 4.0.2.
Any and all assistance and suggestion will be greatly appreciated! Has anyone else seen this sort of behavior? Are there any work arounds or corrective actions?
TIA

Has anyone else run into this? I'd greatly appreciate any assistance as I cannot seem to resolve this hot-deploy related leak.

Memory Leak: Do I need to explicitly free memory reference for collection?

Hi,
My web application uses JRockit JDK 1.4.2, Java Servlet, JSP &Struts. It is a clustered environment using WL 8.1 sp 4. I am investigating whether there are any memory leaks in the application & what are best practices to avoid leaks.
A specific scenario is as follows:
For an incoming request, the struts action class creates object �O� (of class A) and set �O� as a request attribute. This request attribute is used to display values on the JSP.
Now, class A has a heavily nested structure: Class A has object of class B, where B has a HashSet of objects of type C and where C has an object of type D and E.
Though I set this object �O� in request scope, do I need to explicitly nullify any of the references within object �O�? Can �not doing this� result in a memory leak?
Thanks in advance,
sjaiprakash

jEnv->ReleaseStringUTFChars((jstring) jStr, str);free(str); //Is this line valid or outright wrong?Outright wrong.
Another question is if ReleaseStringUTFChars actually frees str then will it set str to NULL?No, that's impossible by the semantics of C and C++.
I guess not as we are not sending this pointer by reference.Exactly, so what you described is impossible. No need to ask really.
My last question is if str is NULL then calling ReleaseStringUTFChars over it can cause any problem?How could it be null? If it comes from GetStringUTFChars that's impossible, and if it doesn't you don't have any business calling ReleaseStringUTFChars() on it, whatever its value.

How to configure JProfiler6 to monitor tomcat6.0 for memory leak

Hello,
Can anyone help. I am tring to work out the memory leak of my Web Application running on the local server. I have been told that jprofiler is a good tool for monitoring memory. I have dowloaded jprofiler6, but I dont know how to config the setting.
what i have done is:
1.from the Quickstart window->An application server, locally or remotely
2.follow the wizard step by step
1)choose application server Apache Tomcat 6.x
2)application is located "on this computer"
3) Chose JVM vendor
4) wait for a connection from the JProfiler GUI
5) Locate the start script :C:\Program Files\Apache Software Foundation\apache-tomcat-6.0.20\bin\startup.bat
6) port:8849
7)finished
After i done these, a error message came out said:
"Could not connect ot 127.0.0.1:8849.Please make sure that the remote address is correct, the remote program is started properly and the netword route allows socket connections."

Hi,
The recommended solution is to download Oracle JRockit Mission Control (available here: http://www.oracle.com/technology/software/products/jrockit/index.html) and install on your server. The installers include Oracle JRockit JVM as well as Mission Control, and are free of license checks.
If that solution for some reason is unfeasible you can download legacy development license files from here (http://download2.bea.com/pub/license/All%20Products/BEA_WebLogic.zip).
The license you are looking for is named “LIC-WLRT20.txt”. Rename it to license.bea, and follow the instructions at http://edocs.bea.com/jrockit/geninfo/diagnos/conf_run.html#wp1077371

Error while loading a 10.1.3 ADF application login page on JBoss EAP 6.0.1

I have a 10.1.3 ADF application that runs well on Web Sphere and OC4J. I'm trying to run it on JBoss EAP 6.0.1. The ear file was deployed successfully to JBOSS and according to ADF logging the connection to Oracle database is established.
But when I try to load the application login page, I obtain the following exception
ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[default-host].[/cv].[Faces Servlet]] (http-/0.0.0.0:8080-1) Servlet.service() for servlet Faces Servlet threw exception: oracle.jbo.common.ampool.ApplicationPoolException:
JBO-30003: The application pool (com.claimvantage.adf.root.Oracle) failed to checkout an application module due to the following exception:
        at oracle.jbo.common.ampool.ApplicationPoolImpl.doCheckout(ApplicationPoolImpl.java:2002) [bc4jct.jar:]
        at oracle.jbo.common.ampool.ApplicationPoolImpl.useApplicationModule(ApplicationPoolImpl.java:2793) [bc4jct.jar:]
        at oracle.jbo.common.ampool.SessionCookieImpl.useApplicationModule(SessionCookieImpl.java:453) [bc4jct.jar:]
        at oracle.jbo.http.HttpSessionCookieImpl.useApplicationModule(HttpSessionCookieImpl.java:233) [adfmweb.jar:]
        at oracle.jbo.common.ampool.SessionCookieImpl.useApplicationModule(SessionCookieImpl.java:424) [bc4jct.jar:]
        at oracle.jbo.common.ampool.SessionCookieImpl.useApplicationModule(SessionCookieImpl.java:419) [bc4jct.jar:]
        at oracle.adf.model.bc4j.DCJboDataControl.rebuildApplicationModule(DCJboDataControl.java:1536) [adfm.jar:]
        at oracle.adf.model.bc4j.DCJboDataControl.beginRequest(DCJboDataControl.java:1396) [adfm.jar:]
        at oracle.adf.model.binding.DCDataControlReference.getDataControl(DCDataControlReference.java:99) [adfm.jar:]
        at oracle.adf.model.BindingContext.get(BindingContext.java:457) [adfm.jar:]
        at oracle.adf.model.BindingContext.findDataControl(BindingContext.java:308) [adfm.jar:]
        at com.claimvantage.web.bean.jsf.JhsPageLifecycle.getMessageHolder(JhsPageLifecycle.java:220) [cv-model.jar:]
        at com.claimvantage.web.bean.jsf.JhsPageLifecycle.reportErrors(JhsPageLifecycle.java:203) [cv-model.jar:]
        at oracle.adf.controller.v2.lifecycle.PageLifecycleImpl.prepareRender(PageLifecycleImpl.java:548) [adf-controller.jar:]
        at oracle.adf.controller.faces.lifecycle.FacesPageLifecycle.prepareRender(FacesPageLifecycle.java:99) [adf-controller.jar:]
        at oracle.jheadstart.controller.jsf.lifecycle.JhsPageLifecycle.prepareRender(JhsPageLifecycle.java:1080) [jhsadfrt-10.1.3.jar:]
        at oracle.adf.controller.v2.lifecycle.Lifecycle$1.execute(Lifecycle.java:297) [adf-controller.jar:]
        at oracle.adf.controller.v2.lifecycle.Lifecycle.executePhase(Lifecycle.java:116) [adf-controller.jar:]
        at oracle.adf.controller.faces.lifecycle.ADFPhaseListener.mav$executePhase(ADFPhaseListener.java:29) [adf-controller.jar:]
        at oracle.adf.controller.faces.lifecycle.ADFPhaseListener$1.before(ADFPhaseListener.java:426) [adf-controller.jar:]
        at oracle.adf.controller.faces.lifecycle.ADFPhaseListener.beforePhase(ADFPhaseListener.java:77) [adf-controller.jar:]
        at com.sun.faces.lifecycle.Phase.handleBeforePhase(Phase.java:228) [jsf-impl-2.1.13-redhat-1.jar:2.1.13-redhat-1]
        at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:99) [jsf-impl-2.1.13-redhat-1.jar:2.1.13-redhat-1]
        at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139) [jsf-impl-2.1.13-redhat-1.jar:2.1.13-redhat-1]
        at javax.faces.webapp.FacesServlet.service(FacesServlet.java:594) [jboss-jsf-api_2.1_spec-2.0.7.Final-redhat-1.jar:2.0.7.Final-redhat-1]
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:329) [jbossweb-7.0.17.Final-redhat-1.jar:]
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.17.Final-redhat-1.jar:]
        at oracle.adf.model.servlet.ADFBindingFilter.doFilter(ADFBindingFilter.java:162) [adfm.jar:]
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280) [jbossweb-7.0.17.Final-redhat-1.jar:]
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.17.Final-redhat-1.jar:]
        at oracle.adfinternal.view.faces.webapp.AdfFacesFilterImpl._invokeDoFilter(AdfFacesFilterImpl.java:228) [adf-faces-impl-no-oracle-desktop-xss.jar:10_1_3_2_0]
        at oracle.adfinternal.view.faces.webapp.AdfFacesFilterImpl._doFilterImpl(AdfFacesFilterImpl.java:197) [adf-faces-impl-no-oracle-desktop-xss.jar:10_1_3_2_0]
        at oracle.adfinternal.view.faces.webapp.AdfFacesFilterImpl.doFilter(AdfFacesFilterImpl.java:123) [adf-faces-impl-no-oracle-desktop-xss.jar:10_1_3_2_0]
        at oracle.adf.view.faces.webapp.AdfFacesFilter.doFilter(AdfFacesFilter.java:103) [adf-faces-api.jar:10_1_3_2_0]
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280) [jbossweb-7.0.17.Final-redhat-1.jar:]
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.17.Final-redhat-1.jar:]
        at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:840) [jbossweb-7.0.17.Final-redhat-1.jar:]
        at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:622) [jbossweb-7.0.17.Final-redhat-1.jar:]
        at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:560) [jbossweb-7.0.17.Final-redhat-1.jar:]
        at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:488) [jbossweb-7.0.17.Final-redhat-1.jar:]
        at com.claimvantage.web.sso.AuthenticationFilter.doFilter(AuthenticationFilter.java:272) [cv-model.jar:]
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280) [jbossweb-7.0.17.Final-redhat-1.jar:]
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.17.Final-redhat-1.jar:]
        at oracle.adf.model.servlet.ADFBindingFilter.doFilter(ADFBindingFilter.java:162) [adfm.jar:]
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280) [jbossweb-7.0.17.Final-redhat-1.jar:]
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.17.Final-redhat-1.jar:]
        at oracle.adfinternal.view.faces.webapp.AdfFacesFilterImpl._invokeDoFilter(AdfFacesFilterImpl.java:228) [adf-faces-impl-no-oracle-desktop-xss.jar:10_1_3_2_0]
        at oracle.adfinternal.view.faces.webapp.AdfFacesFilterImpl._doFilterImpl(AdfFacesFilterImpl.java:197) [adf-faces-impl-no-oracle-desktop-xss.jar:10_1_3_2_0]
        at oracle.adfinternal.view.faces.webapp.AdfFacesFilterImpl.doFilter(AdfFacesFilterImpl.java:123) [adf-faces-impl-no-oracle-desktop-xss.jar:10_1_3_2_0]
        at oracle.adf.view.faces.webapp.AdfFacesFilter.doFilter(AdfFacesFilter.java:103) [adf-faces-api.jar:10_1_3_2_0]
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280) [jbossweb-7.0.17.Final-redhat-1.jar:]
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.17.Final-redhat-1.jar:]
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:275) [jbossweb-7.0.17.Final-redhat-1.jar:]
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161) [jbossweb-7.0.17.Final-redhat-1.jar:]
        at org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:169) [jboss-as-web-7.1.3.Final-redhat-4.jar:7.1.3.Final-redhat-4]
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:155) [jbossweb-7.0.17.Final-redhat-1.jar:]
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) [jbossweb-7.0.17.Final-redhat-1.jar:]
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) [jbossweb-7.0.17.Final-redhat-1.jar:]
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:372) [jbossweb-7.0.17.Final-redhat-1.jar:]
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877) [jbossweb-7.0.17.Final-redhat-1.jar:]
        at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:679) [jbossweb-7.0.17.Final-redhat-1.jar:]
        at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:931) [jbossweb-7.0.17.Final-redhat-1.jar:]
        at java.lang.Thread.run(Unknown Source) [rt.jar:1.6.0_16]
Any help would be really appreciated.
Thanks

Thanks Frank for your answer.
I can't see where the exception states that DB connection was not established!
In the log, I have:
21:49:06,874 INFO [stdout] (http-/0.0.0.0:8080-1) [3011] Created root application module: 'com.claimvantage.adf.root.RootAppModule'
21:49:06,874 INFO [stdout] (http-/0.0.0.0:8080-1) [3012] Locale is: 'en_US'
21:49:06,874 INFO [stdout] (http-/0.0.0.0:8080-1) [3013] ApplicationPoolImpl.resourceStateChanged wasn't release related. No notify invoked.
21:49:06,890 INFO [stdout] (http-/0.0.0.0:8080-1) [3014] Oracle SQLBuilder: Registered driver: oracle.jdbc.driver.OracleDriver
21:49:06,890 INFO [stdout] (http-/0.0.0.0:8080-1) [3015] import java.util.*; // JBO-JDBC-INTERACT
21:49:06,890 INFO [stdout] (http-/0.0.0.0:8080-1) [3016] import java.sql.*; // JBO-JDBC-INTERACT
21:49:06,890 INFO [stdout] (http-/0.0.0.0:8080-1) [3017] import java.io.*; // JBO-JDBC-INTERACT
21:49:06,890 INFO [stdout] (http-/0.0.0.0:8080-1) [3018] public class JDBCCalls // JBO-JDBC-INTERACT
21:49:06,890 INFO [stdout] (http-/0.0.0.0:8080-1) [3019] { // JBO-JDBC-INTERACT
21:49:06,890 INFO [stdout] (http-/0.0.0.0:8080-1) [3020]    public Connection conn = null; // JBO-JDBC-INTERACT
21:49:06,890 INFO [stdout] (http-/0.0.0.0:8080-1) [3021]    public CallableStatement cStmt = null; // JBO-JDBC-INTERACT
21:49:06,890 INFO [stdout] (http-/0.0.0.0:8080-1) [3022]    public PreparedStatement pStmt = null; // JBO-JDBC-INTERACT
21:49:06,890 INFO [stdout] (http-/0.0.0.0:8080-1) [3023]    public Statement stmt = null; // JBO-JDBC-INTERACT
21:49:06,890 INFO [stdout] (http-/0.0.0.0:8080-1) [3024]    public ResultSet rslt = null; // JBO-JDBC-INTERACT
21:49:06,890 INFO [stdout] (http-/0.0.0.0:8080-1) [3025]    public static void main(String argv[]) // JBO-JDBC-INTERACT
21:49:06,890 INFO [stdout] (http-/0.0.0.0:8080-1) [3026]    { // JBO-JDBC-INTERACT
21:49:06,890 INFO [stdout] (http-/0.0.0.0:8080-1) [3027]       DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver()); // JBO-JDBC-INTERACT
21:49:06,890 INFO [stdout] (http-/0.0.0.0:8080-1) [3028] Creating a new pool resource
21:49:06,890 INFO [stdout] (http-/0.0.0.0:8080-1) [3029] Trying connection/2: url='jdbc:oracle:thin:@s1ora01s:1521:s1ora01a' ...
21:49:07,093 INFO [stdout] (http-/0.0.0.0:8080-1) [3030]       conn = DriverManager.getConnection("jdbc:oracle:thin:@s1ora01s:1521:s1ora01a", /*properties*/); // JBO-JDBC-INTERACT
21:49:07,093 INFO [stdout] (http-/0.0.0.0:8080-1) [3031]       conn.setAutoCommit(false); // JBO-JDBC-INTERACT
21:49:07,093 INFO [stdout] (http-/0.0.0.0:8080-1) [3032] Successfully logged in
21:49:07,093 INFO [stdout] (http-/0.0.0.0:8080-1) [3033] JDBCDriverVersion: 10.2.0.1.0XE
21:49:07,093 INFO [stdout] (http-/0.0.0.0:8080-1) [3034] DatabaseProductName: Oracle
21:49:07,093 INFO [stdout] (http-/0.0.0.0:8080-1) [3035] DatabaseProductVersion: Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bit Production With the Partitioning, OLAP, Data Mining and Real Application Testing options
Don't you think that it indicates that DB connection is well established?
MBen

How to determine memory leaks?

I tried in XCODE, the RUN/ Start with Performance TOol / and tried out the various options. I was running my app and looking to see if it would report increasing memory use but it seemed to be looking at my total system (i was running under the simulator). In general what is the recommended procedure for determining memory leaks, which tool to use, and what tracing can i use?
How does one look at the retain count of an object? are there system routines that have knonw leaks?

You took the right path. Once instruments comes up select the Leaks tool. Turn off automatic leak detection. In your app, start off at some known state, do something, and come back to the known state and check for leaks. For instance start off in a view, do something that brings up another view then come back to the original view and check for leaks. Leaks will show you if you leaked. Since you took a very deterministic path then checked it should be straight forward to go to the code and find / fix the leaks. Leaks shows you where the code where the leak was generated.

JBoss EAP 6 On JRockit - Memory Leak

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