How to find out memory of a java card

is there anyone could tell me that how can we check the size of the memory of a card? thank you in advance:D

If the card is a Java Card 2.2.1, create an applet that returns
JCSystem.getAvailableMemory(), install and queryit.
Some other ideas for getting the free memory on card were presented in the thread "Java Forums - Free memory on card"
http://forum.java.sun.com/thread.jspa?threadID=647894&tstart=30
Jan

Similar Messages

How to find out memory occupied by a table and a user?

I want to find out how much memory space is occupied by a table and I also wants to know how much data, a user is using.
Eg: Consider Emp table of 8 columns and 14 rows. I need memory occupied by Emp table.
Suppose consider "Scott" user is created 4 tables,3 sequences,2 indexes, 1 view.
I want to know how much memory is used by Scott?

Did you mean the object size?
--For particular object size in MEGABYTEs
select sum(bytes)/1024/1024 mega_bytes
from dba_segments
where segment_name = 'EMP'
and owner = 'SCOTT';
MEGA_BYTES
    0.0625
--For a schema size
select segment_type,sum(bytes)/1024/1024 mega_bytes
from dba_segments
where owner = 'SCOTT'
group by rollup(segment_type);
SEGMENT_TYPE       MEGA_BYTES
INDEX                  1.0625
LOBINDEX               0.0625
LOBSEGMENT             0.0625
TABLE                      15
                      16.1875

How to root out memory leak with Java JNI & Native BDB 11g ?

We are testing a web application using the 32-bit compiled native 11g version of BDB (with replication) under 32-bit IBM 1.5 JVM via JNI under 64-bit RedHat Linux. We are experiencing what appears to be a memory leak without a commensurate increase in Java heap size. Basically the process size continues to grow until the max 32-process size is reached (4Gb) and eventually stops running (no core). Java heap is set to 2Gb min/max. GCs are nominal, so the leak appears to be native and outside Java bytecode.
We need to determine whether there is a memory leak in BDB, or the IBM JVM or simply a mis-use of BDB in the Java code. What tools/instrumentation/db statistic should be used to help get to root cause? Do you recommend using System Tap (with some particular text command script)? What DB stats should we capture to get to the bottom of this memory leak? What troubleshooting steps can you recommend?
Thanks ahead of time.
JE.
Edited by: 787930 on Aug 12, 2010 5:42 PM

That's troublesome... DB itself doesn't have stats that track VM in any useful way. I am not familiar with SystemTap but a quick look at it seems to imply that it's better for kernel monitoring than user space. It's pretty hard to get DB to leak significant amounts of memory. The reason is that it mostly uses shared memory carved from the environment. Also if you are neglecting to close or delete some object DB generally complains about it somewhere.
I don't see how pmap would help if it's a heap leak but maybe I'm missing something.
One way to rule DB out is to replace its internal memory allocation functions with your own that are instrumented to track how much VM has been allocated (and freed). This is very easy to do using the interfaces:
db_env_set_func_malloc()
db_env_set_func_free()
These are global to your process and your functions will be used where DB would otherwise call malloc() and free(). How you get usage information out of the system is an exercise left to the reader :-) If it turns out DB is the culprit then there is more thinking to do to isolate the problem.
Other ideas that can provide information if not actual smoking guns:
-- accelerate reproduction of the problem by allocating nearly all of the VM to the JVM and the DB cache (or otherwise limit the allowable VM in your process)
-- change the VM allocated to the JVM in various ways
Regards,
George

How to find out that we have Java machine on our computer (Windows)

I want to make setup prog which will search for Java machine (NOT ONLY SUN BUT ALSO OTHERS) and if it can't find any, it will install new in a bonus.

I don't have JAVA_HOME environment variable but i am sure i have java machine =)Yeah, kinda what I said. [url http://www.google.nl/search?q=get+list+of+installed+software]This search looked promising, though I haven't looked into it very deep.
Kind regards,
Levi

How to find out memory consumption for table in HANA without load it into memory

Hi,
To determine the memory consumption for a table in HANA, you can query table M_CS_TABLES, however, it requires load table into memory first, I just wonder if there has another table store memory consumption information for all HANA tables regardless it load into memory or not. Below is screenshot for one of table in my system, since that table is partially loaded into memory, "Total Memory Consumption (KB):" tell me the memory consumption of the portion load into memory, what I am looking for is something like "Estimated Maximun Memory Consumption (KB)" which provides me total memory consumption for that table including portion doesn't load into memory, of course I can use this Esitmated information, but consider I have close to thousand tables in my HANA system already, it's not pratical to check tables one by one.
Thanks,
Xiaogang.

Hi Xiaogang,
Estimated Memory Size that you see in the Table Run time Information - same is available in M_CS_TABLES also
If you don't get the size of any Table in M_CS_TABLES View, then the same will also not be available in Runtime information of the Table
Even if tables are not loaded into memory, you can get the Estimated Size, just try running the query with filter LOADED = 'NO'
Regards,
Vivek

How to find out how many memory is used for NIO

is there any way to find out how many memory is used for nio in a virtual machine. ?
I know that is possible to find out how many total, free and used memory the heap has by using java.lang.Runtime#totalMemory...
We sometimes expect errors that it is not possible to create any more connections because of the NIO memory size but the heap is still ok. Today we had an error where 170mbytes of heap where left but it was not possible to create new tcp connections because of an exception:
javax.naming.NamingException: java.net.SocketException: No buffer space available (maximum connections reached?): connect
The number of TCP-Connections was ok (<500).
It would be very nice if someone knows how to find out how the amount of memory that NIO buffers use can be determined within Java 1.4.
best regards
benjamin

We have to use 1.4.2_03. This is because of the special environment we are running on.
We did also figured out that there are some NIO Memory Bugs but we since we are not allowed to upgrade the used Virtual Machine we have to live with these errors.
The problem that we currently have is within a Server and because of this circumstance we are trying to find a workaround or way to find out how many memory is allocated. If we would know how to get this value we could restart the servers as a workaround after the value reaches a threshold.
We are also very sad that we can`t easily upgrade/update to the latest 1.4.2 Version or the newest 1.5 to get rid of these NIO Bugs!

How to find out CPU and memory usage for an instance?

Hi DBA Gurus,
How to find out CPU usage and memory usage for an instance?
Any information is appreciated!
Thank you!
Robert

you can calculate cpu usage by adding fallowing three factors which you can get from v$sysstat
1. Parse CPU time : This represents the percentage of CPU time spent parsing SQL statements. Parse time CPU can be a strong indication that an application has not been well tuned. High parse time CPU usually indicates that the application may be spending too much time opening and closing cursors or is not using bind variables.
2. Recursive CPU time : Sometimes, to execute a SQL statement issued by a user, the Oracle Server must issue additional statements. Such statements are called recursive calls or recursive SQL statements. For example, if you insert a row into a table that does not have enough space to hold that row, the Oracle Server makes recursive calls to allocate the space dynamically if dictionary managed tablespaces are being used.
Recursive calls are also generated due to the inavailability of dictionary info in the dictionary cache, firing of database triggers, execution of DDL, execution of SQL within PL/SQL blocks, functions or stored procedures and enforcement of referential integrity constraints
3. Other CPU time : This represents the percentage of time spent looking for buffers, fetching rows or index keys, etc. Generally, \"Other\" CPU should represent the highest percentage of CPU time out of the total CPU time used.
total memory used you can calculate adding
total_agrigate_area+sga
memory usage on os level you can know by fallowing commands
vmstat 5 20 depending upon os

How to find out internet explorer version ,using a java program?

How to find out internet explorer version ,using a java program?

Browser version from java?....you must be referring it from some web application....rite?
You can read the User-Agent header using request.getUserAgent() or request.getHeader("User-Agent") in your jsp or servlet.
for more details pls refer:
http://www.jguru.com/jguru/faq/view.jsp?EID=12253

How to find out Integrated weblogic server version

hi experts,
am using jdev11.1.1.5.0
i h'd big doubt ;)
how to find out Integrated weblogic server version
i think am using weblogic10.1.3. but am not sure?
so how can i found out.
this my log. but i dont see any info about version.
*** Using port 7101 ***
"C:\Documents and Settings\Administrator\Application Data\JDeveloper\system11.1.1.5.37.60.13\DefaultDomain\bin\startWebLogic.cmd"
[waiting for the server to complete its initialization...]
JAVA Memory arguments: -Xms256m -Xmx512m -XX:CompileThreshold=8000 -XX:PermSize=128m -XX:MaxPermSize=512m
WLS Start Mode=Development
CLASSPATH=C:\Oracle\MIDDLE~1\ORACLE~1\modules\oracle.jdbc_11.1.1\ojdbc6dms.jar;C:\Oracle\MIDDLE~1\patch_wls1035\profiles\default\sys_manifest_classpath\weblogic_patch.jar;C:\Oracle\MIDDLE~1\patch_jdev1111\profiles\default\sys_manifest_classpath\weblogic_patch.jar;C:\Oracle\MIDDLE~1\JDK160~1\lib\tools.jar;C:\Oracle\MIDDLE~1\WLSERV~1.3\server\lib\weblogic_sp.jar;C:\Oracle\MIDDLE~1\WLSERV~1.3\server\lib\weblogic.jar;C:\Oracle\MIDDLE~1\modules\features\weblogic.server.modules_10.3.5.0.jar;C:\Oracle\MIDDLE~1\WLSERV~1.3\server\lib\webservices.jar;C:\Oracle\MIDDLE~1\modules\ORGAPA~1.1/lib/ant-all.jar;C:\Oracle\MIDDLE~1\modules\NETSFA~1.0_1/lib/ant-contrib.jar;C:\Oracle\MIDDLE~1\ORACLE~1\modules\oracle.jrf_11.1.1\jrf.jar;C:\Oracle\MIDDLE~1\WLSERV~1.3\common\derby\lib\derbyclient.jar;C:\Oracle\MIDDLE~1\WLSERV~1.3\server\lib\xqrl.jar
PATH=C:\Oracle\MIDDLE~1\patch_wls1035\profiles\default\native;C:\Oracle\MIDDLE~1\patch_jdev1111\profiles\default\native;C:\Oracle\MIDDLE~1\WLSERV~1.3\server\native\win\32;C:\Oracle\MIDDLE~1\WLSERV~1.3\server\bin;C:\Oracle\MIDDLE~1\modules\ORGAPA~1.1\bin;C:\Oracle\MIDDLE~1\JDK160~1\jre\bin;C:\Oracle\MIDDLE~1\JDK160~1\bin;C:\DevSuiteHome_1\jdk\jre\bin\classic;C:\DevSuiteHome_1\jdk\jre\bin;C:\DevSuiteHome_1\jdk\jre\bin\client;C:\DevSuiteHome_1\jlib;C:\DevSuiteHome_1\bin;C:\DevSuiteHome_1\jre\1.4.2\bin\client;C:\DevSuiteHome_1\jre\1.4.2\bin;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\Oracle\MIDDLE~1\WLSERV~1.3\server\native\win\32\oci920_8
* To start WebLogic Server, use a username and   *
* password assigned to an admin-level user. For *
* server administration, use the WebLogic Server *
* console at http:\\hostname:port\console        *
starting weblogic with Java version:
java version "1.6.0_24"
Java(TM) SE Runtime Environment (build 1.6.0_24-b50)
Java HotSpot(TM) Client VM (build 19.1-b02, mixed mode)
Starting WLS with line:
C:\Oracle\MIDDLE~1\JDK160~1\bin\java -client   -Xms256m -Xmx512m -XX:CompileThreshold=8000 -XX:PermSize=128m -XX:MaxPermSize=512m -Dweblogic.Name=DefaultServer -Djava.security.policy=C:\Oracle\MIDDLE~1\WLSERV~1.3\server\lib\weblogic.policy -Djavax.net.ssl.trustStore=C:\Oracle\Middleware\wlserver_10.3\server\lib\DemoTrust.jks -Duser.timezone="+05:30" -Dweblogic.nodemanager.ServiceEnabled=true -Xverify:none -da -Dplatform.home=C:\Oracle\MIDDLE~1\WLSERV~1.3 -Dwls.home=C:\Oracle\MIDDLE~1\WLSERV~1.3\server -Dweblogic.home=C:\Oracle\MIDDLE~1\WLSERV~1.3\server -Djps.app.credential.overwrite.allowed=true -Dcommon.components.home=C:\Oracle\MIDDLE~1\ORACLE~1 -Djrf.version=11.1.1 -Dorg.apache.commons.logging.Log=org.apache.commons.logging.impl.Jdk14Logger -Ddomain.home=C:\DOCUME~1\ADMINI~1\APPLIC~1\JDEVEL~1\SYSTEM~1.13\DEFAUL~1 -Djrockit.optfile=C:\Oracle\MIDDLE~1\ORACLE~1\modules\oracle.jrf_11.1.1\jrocket_optfile.txt -Doracle.server.config.dir=C:\DOCUME~1\ADMINI~1\APPLIC~1\JDEVEL~1\SYSTEM~1.13\DEFAUL~1\config\FMWCON~1\servers\DefaultServer -Doracle.domain.config.dir=C:\DOCUME~1\ADMINI~1\APPLIC~1\JDEVEL~1\SYSTEM~1.13\DEFAUL~1\config\FMWCON~1 -Digf.arisidbeans.carmlloc=C:\DOCUME~1\ADMINI~1\APPLIC~1\JDEVEL~1\SYSTEM~1.13\DEFAUL~1\config\FMWCON~1\carml -Digf.arisidstack.home=C:\DOCUME~1\ADMINI~1\APPLIC~1\JDEVEL~1\SYSTEM~1.13\DEFAUL~1\config\FMWCON~1\arisidprovider -Doracle.security.jps.config=C:\DOCUME~1\ADMINI~1\APPLIC~1\JDEVEL~1\SYSTEM~1.13\DEFAUL~1\config\fmwconfig\jps-config.xml -Doracle.deployed.app.dir=C:\DOCUME~1\ADMINI~1\APPLIC~1\JDEVEL~1\SYSTEM~1.13\DEFAUL~1\servers\DefaultServer\tmp\_WL_user -Doracle.deployed.app.ext=\- -Dweblogic.alternateTypesDirectory=C:\Oracle\MIDDLE~1\ORACLE~1\modules\oracle.ossoiap_11.1.1,C:\Oracle\MIDDLE~1\ORACLE~1\modules\oracle.oamprovider_11.1.1 -Djava.protocol.handler.pkgs=oracle.mds.net.protocol -Dweblogic.jdbc.remoteEnabled=false -Dwsm.repository.path=C:\DOCUME~1\ADMINI~1\APPLIC~1\JDEVEL~1\SYSTEM~1.13\DEFAUL~1\oracle\store\gmds   -Dweblogic.management.discover=true -Dwlw.iterativeDev= -Dwlw.testConsole= -Dwlw.logErrorsToConsole= -Dweblogic.ext.dirs=C:\Oracle\MIDDLE~1\patch_wls1035\profiles\default\sysext_manifest_classpath;C:\Oracle\MIDDLE~1\patch_jdev1111\profiles\default\sysext_manifest_classpath weblogic.Server
<Feb 17, 2012 5:50:39 AM GMT> <Info> <Security> <BEA-090905> <Disabling CryptoJ JCE Provider self-integrity check for better startup performance. To enable this check, specify -Dweblogic.security.allowCryptoJDefaultJCEVerification=true>
<Feb 17, 2012 5:50:39 AM GMT> <Info> <Security> <BEA-090906> <Changing the default Random Number Generator in RSA CryptoJ from ECDRBG to FIPS186PRNG. To disable this change, specify -Dweblogic.security.allowCryptoJDefaultPRNG=true>
<Feb 17, 2012 5:50:39 AM GMT> <Info> <WebLogicServer> <BEA-000377> <Starting WebLogic Server with Java HotSpot(TM) Client VM Version 19.1-b02 from Sun Microsystems Inc.>
<Feb 17, 2012 5:50:40 AM GMT> <Info> <Management> <BEA-141107> <Version: WebLogic Server 10.3.5.0 Fri Apr 1 20:20:06 PDT 2011 1398638 >
<Feb 17, 2012 5:50:42 AM GMT> <Notice> <WebLogicServer> <BEA-000365> <Server state changed to STARTING>
<Feb 17, 2012 5:50:42 AM GMT> <Info> <WorkManager> <BEA-002900> <Initializing self-tuning thread pool>
<Feb 17, 2012 5:50:42 AM GMT> <Notice> <LoggingService> <BEA-320400> <The log file C:\Documents and Settings\Administrator\Application Data\JDeveloper\system11.1.1.5.37.60.13\DefaultDomain\servers\DefaultServer\logs\DefaultServer.log will be rotated. Reopen the log file if tailing has stopped. This can happen on some platforms like Windows.>
<Feb 17, 2012 5:50:42 AM GMT> <Notice> <LoggingService> <BEA-320401> <The log file has been rotated to C:\Documents and Settings\Administrator\Application Data\JDeveloper\system11.1.1.5.37.60.13\DefaultDomain\servers\DefaultServer\logs\DefaultServer.log00220. Log messages will continue to be logged in C:\Documents and Settings\Administrator\Application Data\JDeveloper\system11.1.1.5.37.60.13\DefaultDomain\servers\DefaultServer\logs\DefaultServer.log.>
<Feb 17, 2012 5:50:42 AM GMT> <Notice> <Log Management> <BEA-170019> <The server log file C:\Documents and Settings\Administrator\Application Data\JDeveloper\system11.1.1.5.37.60.13\DefaultDomain\servers\DefaultServer\logs\DefaultServer.log is opened. All server side log events will be written to this file.>
<Feb 17, 2012 5:50:48 AM GMT> <Notice> <Security> <BEA-090082> <Security initializing using security realm myrealm.>
<Feb 17, 2012 5:50:50 AM GMT> <Notice> <LoggingService> <BEA-320400> <The log file C:\Documents and Settings\Administrator\Application Data\JDeveloper\system11.1.1.5.37.60.13\DefaultDomain\servers\DefaultServer\logs\access.log will be rotated. Reopen the log file if tailing has stopped. This can happen on some platforms like Windows.>
<Feb 17, 2012 5:50:50 AM GMT> <Notice> <LoggingService> <BEA-320401> <The log file has been rotated to C:\Documents and Settings\Administrator\Application Data\JDeveloper\system11.1.1.5.37.60.13\DefaultDomain\servers\DefaultServer\logs\access.log00102. Log messages will continue to be logged in C:\Documents and Settings\Administrator\Application Data\JDeveloper\system11.1.1.5.37.60.13\DefaultDomain\servers\DefaultServer\logs\access.log.>
<Feb 17, 2012 5:50:56 AM GMT> <Notice> <WebLogicServer> <BEA-000365> <Server state changed to STANDBY>
<Feb 17, 2012 5:50:56 AM GMT> <Notice> <WebLogicServer> <BEA-000365> <Server state changed to STARTING>
<MessageLocalizationHelper> <getLocalizedMessage> The resource for bundle "oracle.jrf.i18n.MBeanMessageBundle" with key "oracle.jrf.JRFServiceMBean.checkIfJRFAppliedOnMutipleTargets" cannot be found.
<Feb 17, 2012 5:51:02 AM GMT> <Warning> <J2EE> <BEA-160195> <The application version lifecycle event listener oracle.security.jps.wls.listeners.JpsAppVersionLifecycleListener is ignored because the application GeneralLedger is not versioned.>
<Feb 17, 2012 5:51:07 AM GMT> <Warning> <J2EE> <BEA-160195> <The application version lifecycle event listener oracle.security.jps.wls.listeners.JpsAppVersionLifecycleListener is ignored because the application Rapppdf is not versioned.>
<Feb 17, 2012 5:51:27 AM GMT> <Notice> <LoggingService> <BEA-320400> <The log file C:\Documents and Settings\Administrator\Application Data\JDeveloper\system11.1.1.5.37.60.13\DefaultDomain\servers\DefaultServer\logs\DefaultDomain.log will be rotated. Reopen the log file if tailing has stopped. This can happen on some platforms like Windows.>
<Feb 17, 2012 5:51:27 AM GMT> <Notice> <LoggingService> <BEA-320401> <The log file has been rotated to C:\Documents and Settings\Administrator\Application Data\JDeveloper\system11.1.1.5.37.60.13\DefaultDomain\servers\DefaultServer\logs\DefaultDomain.log00208. Log messages will continue to be logged in C:\Documents and Settings\Administrator\Application Data\JDeveloper\system11.1.1.5.37.60.13\DefaultDomain\servers\DefaultServer\logs\DefaultDomain.log.>
<Feb 17, 2012 5:51:27 AM GMT> <Notice> <Log Management> <BEA-170027> <The Server has established connection with the Domain level Diagnostic Service successfully.>
<Feb 17, 2012 5:51:27 AM GMT> <Notice> <WebLogicServer> <BEA-000365> <Server state changed to ADMIN>
<Feb 17, 2012 5:51:27 AM GMT> <Notice> <WebLogicServer> <BEA-000365> <Server state changed to RESUMING>
<Feb 17, 2012 5:51:27 AM GMT> <Warning> <Server> <BEA-002611> <Hostname "rmsys0061", maps to multiple IP addresses: 192.168.0.161, 192.168.2.161>
<Feb 17, 2012 5:51:27 AM GMT> <Notice> <Server> <BEA-002613> <Channel "Default[2]" is now listening on 127.0.0.1:7101 for protocols iiop, t3, ldap, snmp, http.>
<Feb 17, 2012 5:51:27 AM GMT> <Notice> <Server> <BEA-002613> <Channel "Default[1]" is now listening on 192.168.2.161:7101 for protocols iiop, t3, ldap, snmp, http.>
<Feb 17, 2012 5:51:27 AM GMT> <Notice> <Server> <BEA-002613> <Channel "Default" is now listening on 192.168.0.161:7101 for protocols iiop, t3, ldap, snmp, http.>
<Feb 17, 2012 5:51:27 AM GMT> <Notice> <WebLogicServer> <BEA-000331> <Started WebLogic Admin Server "DefaultServer" for domain "DefaultDomain" running in Development Mode>
<Feb 17, 2012 5:51:27 AM GMT> <Notice> <WebLogicServer> <BEA-000365> <Server state changed to RUNNING>
<Feb 17, 2012 5:51:27 AM GMT> <Notice> <WebLogicServer> <BEA-000360> <Server started in RUNNING mode>
IntegratedWebLogicServer startup time: 51640 ms.
IntegratedWebLogicServer started.
[Running application frmtesting on Server Instance IntegratedWebLogicServer...]
[11:21:30 AM] ---- Deployment started. ----
[11:21:30 AM] Target platform is (Weblogic 10.3).
[11:21:31 AM] Retrieving existing application information
[11:21:31 AM] Running dependency analysis...
[11:21:31 AM] Deploying 2 profiles...
[11:21:32 AM] Wrote Web Application Module to C:\Documents and Settings\Administrator\Application Data\JDeveloper\system11.1.1.5.37.60.13\o.j2ee\drs\frmtesting\ViewControllerWebApp.war
[11:21:32 AM] Wrote Enterprise Application Module to C:\Documents and Settings\Administrator\Application Data\JDeveloper\system11.1.1.5.37.60.13\o.j2ee\drs\frmtesting
[11:21:32 AM] Deploying Application...
<Feb 17, 2012 5:51:33 AM GMT> <Warning> <J2EE> <BEA-160195> <The application version lifecycle event listener oracle.security.jps.wls.listeners.JpsAppVersionLifecycleListener is ignored because the application frmtesting is not versioned.>
[11:21:40 AM] Application Deployed Successfully.
[11:21:40 AM] The following URL context root(s) were defined and can be used as a starting point to test your application:
[11:21:40 AM] http://192.168.0.161:7101/frmtesting-ViewController-context-root
[11:21:40 AM] Elapsed time for deployment: 11 seconds
[11:21:40 AM] ---- Deployment finished. ----
Run startup time: 10812 ms.
[Application frmtesting deployed to Server Instance IntegratedWebLogicServer]
Target URL -- http://127.0.0.1:7101/frmtesting-ViewController-context-root/faces/untitled6.jspxhttp://127.0.0.1:7101/console/login/LoginForm.jsp. it stated as weblogicserver 11g admin console
At the botton(copy right section) 10.3.5.0

Hi,
There is one more method,i know
Set the JAVA_HOME and PATH
then execute the
$WL_HOME\wlserver_10.3\server\bin>setWLSEnv.cmd
Go to directory which contains weblogic.jar ($WL_HOME\server\lib) and run below command
$WL_HOME\wlserver_10.3\server\lib>java -cp weblogic.jar weblogic.version
WebLogic Server 10.3.4.0 Fri Dec 17 20:47:33 PST 2010 1384255
Hope this will be helpful,
Regards
Fabian

How to find native memory usage for a domain

Hi All,
We want to know how to find out current native momory utilization for a perticular weblogic domain. Basically we want to increase our current JVM heap size from 2 GB to 3.5GB because of 32 bit JDK restriction we are not having confident to increase at the memont. If we can get the current native memory utization then we will have a idea how to pregess and change in production env.
OS - Solaris 10
Weblogic - 9.2
Java - 1.5
Thanks and Regards
Dinabandhu

920767 wrote:
Basically we want to increase our current JVM heap size from 2 GB to 3.5GB because of 32 bit JDK restriction we are not having confident to increase at the memontSurprisingly enough to me that will not work. The maximum on solaris is 2G presuming you are running on a 32 OS.
http://www.oracle.com/technetwork/java/hotspotfaq-138619.html#gc_heap_32bit
We want to know how to find out current native momory utilization for a perticular weblogic domainMemory is per process. Weblogic, the server, is one process (one VM.) Thus you can't increase the application memory for only part of it. I doubt weblogic has a way to limit it by app.

How to find out if an object belongs to young or tenured generation

Hi,
Working on an internal memory analysis tool (to embed in an application), and I wonder if anyone knows how to find out what part of the heap an object belongs to (young, tenured, permanent etc.). Since tools like VisualGC (both for JDK 1.4 and 1.5) seem to be able to discern between the objects in the heap, there must be a way to figure it out. Is there an API in JNI, JVMTI or JVMPI or anything else that provides this info?
Thanks,
Luc

In Java 1.5 the Monitoring & Management API can tell you this. See J2SE 5.0 in a Nutshell

How to find out which C library I am using?

On my Solaris 9 UltraSparc system,
% echo $LD_LIBRARY_PATH
/opt/gcc/3.4.4/lib:/opt/glib/2.12.1/lib:/opt/gnome/lib:/opt/openssl/0.9.7g/lib
% /usr/lib/libc.so
usage: ld.so.1 [-e option,...] dynamic-object [object args,...]
On my Solaris 10 x86 system,
% echo $LD_LIBRARY_PATH
/pkg/gcc/4.2.1/lib:/opt/gcc/current/lib:/opt/glib/2.10.1/lib:/usr/sfw/lib:/usr/lib/mps:/opt/openldap/lib:/opt/openssl/current/lib
% /usr/lib/libc.so
usage: ld.so.1 [-e option,...] dynamic-object [object args,...]
On my Linux/x86 system,
% echo $LD_LIBRARY_PATH
/opt/openssl/0.9.7g/lib:/opt/gcc/3.4.4/lib:/opt/binutils2.13/lib:/opt/glib/2.12.1/lib:/opt/java/j2sdk1.4.1_01/lib
% /lib/libc.so.6
GNU C Library stable release version 2.6.1, by Roland McGrath et al.
From the above, can one tell what C library I am linking to on the Solaris systems? If not, how can one tell? How do I know the exact location of the C library I am using?
On the Linux/x86 system, I can use gnu_get_libc_version() to find out the version of glibc I am supposedly using. But it does not work when I compiled the identical C program using gcc on the Solaris 9/UltraSparc and Solaris 10/x86 systems. If I can use gnu_get_libc_version() , does that mean for sure that my C program links to glibc? On the other hand, if the linker reports that gnu_get_libc_version() is not found, does that mean for sure that my C program is not linked to glibc?
Is there a function on the Sun libc similiar to gnu_get_libc_version()?
http://docs.sun.com/source/819-3690/Using.Libs.html says "The Solaris operating system comes with several libraries installed in /usr/lib. Most of these libraries have a C interface. Of these, the libc and libm, libraries are linked by the CC driver by default." If one wants to link to the glibc library, how to override the default? How to find out the default? Is it in some environ variable? If one changes the CC driver to gcc, does the default remain the Sun libc? And if one compiles explictly using gcc, i.e. "gcc myprog.c", is the default C library the Sun Library, or glibc?
gnu.org has a (web page for the) glibc manual but I am not able to find a Sun C Library Manual. Is there one?
Edited by: hzmonte on Jun 28, 2008 1:43 AM

I'll discuss only the Sun C compiler here. For questions about gcc, look in the gcc manual, or try a gcc forum.
Run the command "ldd" on an executable file or shared library, and it will report the shared libraries that it will link to, based on any runpath in the file, and on LD_LIBRARY_PATH. Example: % echo $LD_LIBRARY_PATH
LD_LIBRARY_PATH: Undefined variable
% cc hello.c
% ldd a.out
        libc.so.1 =>     /lib/libc.so.1
        libm.so.2 =>     /lib/libm.so.2
        /platform/SUNW,A70/lib/libc_psr.so.1 BTW, except possibly for testing, there is usually no need to set LD_LIBRARY_PATH, and setting it is usually a bad idea. For more on this topic see Rod Evans' blog:
[http://blogs.sun.com/rie/entry/tt_ld_library_path_tt]
Prefer to set a runpath in the executable so that no client needs to set LD_LIBRARY_PATH.
If you want to know what libraries the C compiler will link, based on a given command line, you can add the -v (verbose) option, which will display each subcommand. Or you can use the -### option, which shows what commands would be run. Example: % cc -### hello.c
### Note: NLSPATH = \
/opt/SUNWspro/prod/bin/../lib/locale/%L/LC_MESSAGES/%N.cat:/opt/SUNWspro/prod/bin/../../lib/locale/%L/LC_MESSAGES/%N.cat
###     command line files and options (expanded):
### hello.c
/opt/SUNWspro/prod/bin/acomp -xldscope=global -i hello.c -y-fbe -y/opt/SUNWspro/prod/bin/fbe -y-xarch=generic \
-y-xmemalign=8i -y-o -yhello.o -y-verbose -y-xthreadvar=no%dynamic -y-comdat -xdbggen=no%stabs+dwarf2+usedonly \
-xdbggen=incl -y-s -m32 -fparam_ir -Qy -D__SunOS_5_10 -D__SUNPRO_C=0x590 -D__SVR4 -D__sun -D__SunOS -D__unix \
-D__sparc -D__BUILTIN_VA_ARG_INCR -D__C99FEATURES__ -Xa -D__PRAGMA_REDEFINE_EXTNAME -Dunix -Dsun \
-Dsparc -D__RESTRICT -xc99=%all,no%lib -D__FLT_EVAL_METHOD__=0 -I/opt/SUNWspro/prod/include/cc \
"-g/opt/SUNWspro/prod/bin/cc -c " -fsimple=0 -D__SUN_PREFETCH -destination_ir=yabe
### Note: LD_LIBRARY_PATH = <null>
### Note: LD_RUN_PATH = <null>
/usr/ccs/bin/ld /opt/SUNWspro/prod/lib/crti.o /opt/SUNWspro/prod/lib/crt1.o /opt/SUNWspro/prod/lib/misalign.o \
/opt/SUNWspro/prod/lib/values-xa.o hello.o -Y "P,/opt/SUNWspro/prod/lib/sparc:/opt/SUNWspro/prod/lib:/usr/ccs/lib:/lib:/usr/lib" \
-Qy -lc /opt/SUNWspro/prod/lib/crtn.oThe basic runtime support library is /lib/libc.so.1, on any version of Solaris, used by every compiler version. You can check the patch version of the library by running
showrev -p | grep <patch>
where <patch> is the patch number for the library. The patch number depends on the Solaris version. You can get more information at [http://sunsolve.sun.com].
There is no manual specifically for the C library. There is a Solaris man page for each function in the library, and you can check the C Users Guide and the Solaris Linker and Libraries Guide for additional information.

How to find out if a user is logged into a windows XP or VISTA machine

Hi,
Could somebody please tell me how to find out remotely over a LAN, whether a user is logged into a computer that is running windows XP/VISTA or not? How can this be programmatically done if we know the name of the remote machine?
Thanks.
Ravisara

Hi,
Thanks for all the replies.
Actually it seems that my question has either been misunderstood or has been badly phrased by me.
What I want to know precisely is the way to find out if a user is logged into a machine or not. Say for example in a LAN there are three computers called A, B and C. If my Java program is running on machine C, how can the program check whether a user is logged into machine A? Assuming JRE is present in all three machines, the machines have as their OS windows XP or VISTA and all machines are connected to a windows domain(Windows 2003 server based network)
The idea here is to identify all the computers in a network that users are not logged into and then to remotely shutdown those computers in order to minimize wastage of electricity(preferably after a particular time of the day in an organization).
Any replies would be much appreciated.
Kind regards,
Ravisara

How to find out if I am using a 32 bits or 64 bits version of JRE?

How to find out if I am using a 32 bits or 64 bits version of JRE?
If I have 2 instances of Java installed in 2 seperate directories, one 32 bits and other 64 bits on Linux. How do I identify which directory holds which version?
Is there any command that can output this info?
Regards,
Billamama

With a Sun JDK or JRE, you can use java -version:
$ java -version
java version "1.6.0"
Java(TM) SE Runtime Environment (build 1.6.0-b105)
Java HotSpot(TM) Server VM (build 1.6.0-b105, mixed mode)
... switch to the 64-bit JDK ...
$ java -version
java version "1.6.0"
Java(TM) SE Runtime Environment (build 1.6.0-b105)
Java HotSpot(TM) 64-Bit Server VM (build 1.6.0-b105, mixed mode)
The last line says "64-Bit."

How to find out if two JComponents overlap?

I wanted to create very simple game, another version of arcanoid (or krakout) where player tries to hit bouncing ball with paddle so the ball will break the wall made of small bricks. so far came up with an idea that paddle will be JComponent controlled by mouse, ball will be also JComponent controlled by mouse and after a while got it ready and coded. before i'll go to bricks (which i'm also planning to do as JComponents :) i wanted to know
- how to find out when the paddle and the bouncing ball hit each other and if theres any method that returns boolean (or sth..) when any part of those components overlap so i can change the direction of the ball and take particular bricks off the screen (or will have to do it manually somehow..)?
- also wanted to know if my thinking is correct and douing it with separate classes, having the ball as a thread (changing its .location(..) on the way to move the ball) ,and controlling paddle (another class) just by MouseMotionListener is correct way to do it or there is some other standard aproach to that kind of a program
- how to control if mouse is leaving particular JPanel so i can have user stopped before and keep him inside of that Jpanel, unless he will press particular button or do something
thanks in advance for any help and sorry for probably quite confuzing explanation

Well, yes, because this solution uses the bounds of the JComponent. If you want more complicated shapes, you could define a polygon for instance (java.awt.Polygon) and use it's intersects method, but then the other shape would still need to be a rectangle.
Other options include GeneralPath class and Area class, this would not limit you to rectangles. With the first class you can also draw arbitrary shapes. With the second you can do intersections, unions etc.
Have a look at http://java.sun.com/docs/books/tutorial/2d/TOC.html#display (Java2d )
Mind you, this is more complicated!
Rene'

How to find out memory of a java card

Similar Messages

Maybe you are looking for