Jmap and jstack error: sun.jvm.hotspot.debugger.NoSuchSymbolException

Hi,
 
We are finding some problems using an application on a Tomcat 5.5 server and we want to discover which class is causing an OutOfMemoryException. I seems that jmap could help us whith the task but it fails with the following error:
 
jps
 
11988 Bootstrap 
12616 Jps
 
jmap 11988 
Attaching to process ID 11988, please wait...
sun.jvm.hotspot.debugger.NoSuchSymbolException: Could not find symbol "gHotSpotVMTypeEntryTypeNameOffset" in any of the known library names (libjvm.so, libjvm_g.so, gamma_g)
at sun.jvm.hotspot.HotSpotTypeDataBase.lookupInProcess(HotSpotTypeDataBase.java:410)
at sun.jvm.hotspot.HotSpotTypeDataBase.getLongValueFromProcess(HotSpotTypeDataBase.java:391)
at sun.jvm.hotspot.HotSpotTypeDataBase.readVMTypes(HotSpotTypeDataBase.java:85)
at sun.jvm.hotspot.HotSpotTypeDataBase.<init>(HotSpotTypeDataBase.java:68)
at sun.jvm.hotspot.bugspot.BugSpotAgent.setupVM(BugSpotAgent.java:550)
at sun.jvm.hotspot.bugspot.BugSpotAgent.go(BugSpotAgent.java:476)
at sun.jvm.hotspot.bugspot.BugSpotAgent.attach(BugSpotAgent.java:314)
at sun.jvm.hotspot.tools.Tool.start(Tool.java:146)
at sun.jvm.hotspot.tools.JMap.main(JMap.java:126)
Debugger attached successfully.
jmap requires a java VM process/core!

 
jstack shows the same error with a very similar exception. I have found that other people is having this problem but I have found no fix avalaible on the Internet. ( see, for example, http://www.javalobby.org/java/forums/m91812587.html#91812522 )
 
Other applications like jconsole work perfectly. Any alternative tool may solve the problem,
 
By the way: I am using:
O.S. : Linux Mandriva 2006 
JVM: java version "1.5.0_06" 
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_06-b05)
Java HotSpot(TM) Client VM (build 1.5.0_06-b05, mixed mode)
 
Thanks in advance,
 
Borja

guys,
I was fiddling around to test jmap,
here are the things that worked for me.
$ jps
6281
8214 Jps
7045 Main
7159 Resin
$ jmap -J-d32 -heap 7045
It seems only the Main pid will work and not all others .......
post your suggestions.
Raj

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Edited by: ericfok on Dec 5, 2008 8:48 AM

vitallis wrote:
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[http://www.javaworld.com/javaworld/jw-10-1999/jw-10-jni.html]
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[http://www.microsoft.com/presspass/legal/10-21copyright.mspx]

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In the microsoft JVM (my target platform) I get 2
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# frmsrv.jar, repository.jar and ldapjclnt10.jar are required for
# the password expiry feature to work(#2213140).
CLASSPATH=D:\Ora10gDS\j2ee\OC4J_BI_Forms\applications\formsapp\formsweb\WEB-INF\lib\frmsrv.jar;D:\Ora10gDS\jlib\repository.jar;D:\Ora10gDS\jlib\ldapjclnt10.jar;D:\Ora10gDS\jlib\debugger.jar;D:\Ora10gDS\jlib\ewt3.jar;D:\Ora10gDS\jlib\share.jar;D:\Ora10gDS\jlib\utj.jar;D:\Ora10gDS\jlib\zrclient.jar;D:\Ora10gDS\reports\jlib\rwrun.jar;D:\Ora10gDS\forms\java\frmwebutil.jar;D:\Ora10gDS\forms\java\frmall.jar;D:\Ora10gDS\forms\java\frmall_jinit.jar
Regards
justin

BEA-280101 warning while using Weblogic 10.3.3 on SPARC 64bit sun jvm

Hi all:
I got this warning when start Weblogic 10.3.3 on SPARC 64bit sun jvm
<BEA-280101> <The persistent file store "_WLS_xxxdomain" is forced to use buffered I/O and so may have significantly degraded performance. Either the OS/hardware environment does not support the chosen write policy or the native wlfileio library is missing. See store open log messages for the requested and final write policies. See the documentation on store synchronous write policy configuration for advice.>
I have checked that Native I/O is enabled,but it seems JMS can't find correct .so file
Any idea? Thanks in advance!
Best regards,
James

We are also getting the same error on a Linux 10.3.3 installation with 64bit jrockit
Red Hat Enterprise Linux Server release 5.5
Linux 2.6.18-194.3.1.el5 #1 SMP x86_64 x86_64 x86_64 GNU/Linux
Is that the correct driver? This is a default weblogic installation, what is missing so it uses the correct I/O method?
####<Jun 22, 2010 6:04:12 PM CEST> <Info> <Store> <server> <wlserver> <[ACTIVE] ExecuteThread: '0' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <> <12772226524
27> <BEA-280008> <Opening the persistent file store "_WLS_admdominio1" for recovery: directory=/weblogic103/user_projects/domain/servers/server/data/store/default requestedWritePolicy="Dire
ct-Write" fileLockingEnabled=true driver="NIO".>
####<Jun 22, 2010 6:04:12 PM CEST> <Warning> <Store> <wlserver> <wlserver> <[ACTIVE] ExecuteThread: '0' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <> <1277222652564> <BEA-280101> <The persistent file store "_WLS_wlserver" is forced to use buffered I/O and so may have significantly degraded performance. Either the OS/hardware environment does not support the chosen write policy or the native wlfileio library is missing. See store open log messages for the requested and final write policies. See the documentation on store synchronous write policy configuration for advice.>
Edited by: ezra-s on 22-jun-2010 18:46

IPlanet 6.0 plug-in write_error and read_timeout errors

I'm having a lot of trouble with read timeouts and write errors in my production
environment. The environment is composed of two IPlanet web servers with one cluster
of two machines using Weblogic. The details follows:
Operating System (all machines): SunOS 5.8
WebLogic machines: WebLogic Server 6.1 SP2
JVM Java HotSpot Client VM build 1.3.1_01,
mixed mode
IPlanet machines: iPlanet WebServer Enterprise 6.0 SP4
Solaris VM (build Solaris_JDK_1.2.2_10,
native threads, sunwjit)
The iPlanet machines work as a redirector of requests. All requests that reach
them get redirected to the WebLogic cluster, via a plugin installed on both machines.
My problem is that a lot of read timeout/write error problems are occuring in
this process, in various situations. The majority happens while trying to fetch
static resources, but there are cases the error occurs while trying to access
web server applications.
From the IPlanet log, I selected the following errors, as examples:
Static resources:
[23/Mar/2004:00:05:06] failure ( 7877): for host 200.100.227.193 trying to GET
/weblogic/services/images/torpedo_bg.gif, wl-proxy reports: exception occurred
for backend host '10.112.46.27/7001': 'WRITE_ERROR [os error=32, line 1379 of
proxy.cpp]: '
[23/Mar/2004:13:24:49] failure (21248): for host 200.233.164.3 trying to GET /weblogic/services/images/bt_smsmt_enviar.gif,
wl-proxy reports: exception occurred for backend host '10.112.46.27/7001': 'READ_TIMEOUT
[os error=22, line 198 of Reader.cpp]: no read after 300 seconds'
[23/Mar/2004:13:24:49] failure (21248): for host 200.233.164.3 trying to GET /weblogic/services/images/bt_smsmt_enviar.gif,
wl-proxy reports: exception occurred for backend host '10.112.46.28/7001': 'READ_TIMEOUT
[os error=22, line 198 of Reader.cpp]: no read after 300 seconds'
[23/Mar/2004:13:24:49] failure (21248): for host 201.4.214.97 trying to GET /weblogic/services/javascript/util.js,
wl-proxy reports: exception occurred for backend host '10.112.46.28/7001': 'READ_TIMEOUT
[os error=22, line 198 of Reader.cpp]: no read after 300 seconds'
Applications:
[23/Mar/2004:00:02:50] failure ( 7877): for host 200.151.51.25 trying to POST
/weblogic/services/smsmtresult.jsp, wl-proxy reports: exception occurred for backend
host '10.112.46.28/7001': 'WRITE_ERROR [os error=32, line 1379 of proxy.cpp]:
[23/Mar/2004:13:24:48] failure (21248): for host 200.211.229.10 trying to GET
/weblogic/services/smsmt.jsp, wl-proxy reports: exception occurred for backend
host '10.112.46.27/7001': 'READ_TIMEOUT [os error=22, line 198 of Reader.cpp]:
no read after 300 seconds'
[23/Mar/2004:13:24:50] failure (21248): for host 201.1.97.212 trying to GET /weblogic/services/servlet/imageservlet,
wl-proxy reports: exception occurred for backend host '10.112.46.27/7001': 'READ_TIMEOUT
[os error=22, line 198 of Reader.cpp]: no read after 300 seconds'
The log sometimes shows an interesting message also:
[23/Mar/2004:00:19:53] warning ( 8202): The server configuration may require more
file descriptors than the operating system provides. If you encounter PR_PROC_DESC_TABLE_FULL_ERROR
errors, you may wish to increase the operating system hard file descriptor limit
from 10633 to 10637 (see your operating system documentation) or decrease one
or more of the following settings: MaxFiles in nsfc.conf and ConnQueueSize, RqThrottle,
and MaxKeepAliveConnections in magnus.conf.
I've also checked the Weblogic nodes log, just to see if I could find an explanation
to those problems. No problems were logged at the time the IPlanet reported them.
I don't have any idea right now that could explain what's happening. Maybe the
Weblogic cluster is not providing the necessary resources in time? Or is there
something I could change in the IPlanet's configuration so that the frequency
of the errors diminish?
Any ideas will be greatly appreciated.
Thanks a lot for your time,
Alexandre

Hello Folks
In the obj.conf
You need to set this one in your context
I have an example below
<Object name="test" ppath="*/test/*">
Service fn="wl_proxy" WebLogicCluster="172.17.10.100:7001,172.17.10.101:7001" KeepAliveEnabled="false" PathTrim="" ErrorPage="/Web/html/error.html"
</Object>
Trust this one helps
Cheers
Manoj

Jmap and jstack error: sun.jvm.hotspot.debugger.NoSuchSymbolException

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