Websevice threading issue in Axis1.3 framework
Hi all,
We are facing a strange problem with Axis 1.3 framework.
We have a webservice (ex. ABC1 webservice) which calls another webservice (ABC2 webservice). We are getting abt 30 transactions per second to our webservice. Till now it was working fine.
Suddenly we are facing one time out problem when calling ABC2 webservice from our webservice. We are getting transactions in our webservice(ABC1) but our webservice is not calling ABC2 webservice immediately. It is waiting for some long period of time and after that it is calling ABC2 webservice.
Below are the sample log time when request is received and response is sent back -
ABC1 webservice log -
REQUEST RECEIVED BY ABC1 AT - 2008-06-17 20:37:05
RESPONSE SENT BY ABC1 AT - 2008-06-17 20:38:39
ABC2 webservice log -
REQUEST RECEIVED BY ABC2 AT - 2008-06-17 20:38:36,973
RESPONSE SENT BY ABC2 AT - 2008-06-17 20:38:39,478
(Returning with response in: 2.5 seconds)
It is clear from the logs that a request is received at ABC1 webservice at 20:37:05 but it is forwarding to ABC2 at 20:38:36 that means it is waiting to call ABC2 webservice for abt 91 seconds and ABC2 once received request at 20:38:36 returning the response at 20:38:39 i.e. just in 2-3 seconds.
ABC1 is not performing any business logic when it is receiving request. There is only a code to create ABC2 webservice locator object then a stub object and then call method (of ABC2 webservice) on that stub object.
It is expected that a request should be finished within 4-5 seconds but due to ABC1 threads are waiting to call ABC2 it taking much more time.
We are using Axis 1.3 framework, IBM JDK 1.4 and Websphere application server.
Is there any specific configuration needed for handling multiple simultaneous this? Or is there any problem in the Axis 1.3 framework, if yes then how to resolve it?
Any help in this much much appreciated.
Are you using the production release version?
Please see Paging with LINQ
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<Jul 18, 2011 10:15:25 AM AST> <Error> <WebLogicServer> <BEA-000337> <[STUCK] Ex
ecuteThread: '2' for queue: 'weblogic.kernel.Default (self-tuning)' has been bus
y for "605" seconds working on the request "weblogic.servlet.internal.ServletReq
uestImpl@32d047d4[
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Content-type: application/octet-stream
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]", which is more than the configured time (StuckThreadMaxTime) of "600" seconds
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Thread-55 "[STUCK] ExecuteThread: '2' for queue: 'weblogic.kernel.Default (self-
tuning)'" <alive, in native, suspended, priority=1, DAEMON> {
jrockit.net.SocketNativeIO.readBytesPinned(SocketNativeIO.java:???)
jrockit.net.SocketNativeIO.socketRead(SocketNativeIO.java:24)
java.net.SocketInputStream.socketRead0(SocketInputStream.java:???)
java.net.SocketInputStream.read(SocketInputStream.java:107)
oracle.net.nt.MetricsEnabledInputStream.read(TcpNTAdapter.java:707)
oracle.net.ns.Packet.receive(Packet.java:243)
oracle.net.ns.DataPacket.receive(DataPacket.java:106)
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oracle.jdbc.driver.T4CSocketInputStreamWrapper.read(T4CSocketInputStreamWrap
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oracle.jdbc.driver.T4CMAREngine.getNBytes(T4CMAREngine.java:1573)
oracle.jdbc.driver.T4C8TTILobd.unmarshalLobData(T4C8TTILobd.java:360)
oracle.jdbc.driver.T4C8TTILob.readLOBD(T4C8TTILob.java:787)
oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:303)
oracle.jdbc.driver.T4CTTIfun.doRPC(T4CTTIfun.java:181)
oracle.jdbc.driver.T4C8TTILob.read(T4C8TTILob.java:139)
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oracle.jdbc.driver.OracleBufferedStream.readInternal(OracleBufferedStream.ja
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oracle.jdbc.driver.OracleBufferedStream.read(OracleBufferedStream.java:151)
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k]
java.io.BufferedInputStream.fill(BufferedInputStream.java:189)
java.io.BufferedInputStream.read(BufferedInputStream.java:236)
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thin lock]
oracle.xml.parser.v2.XMLReader.pushXMLReader(XMLReader.java:363)
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oracle.xml.parser.v2.XMLParser.parse(XMLParser.java:217)
oracle.fabric.common.wsdl.SchemaBuilder.parseXMLSrc(SchemaBuilder.java:1016)
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oracle.fabric.common.wsdl.SchemaBuilder.processSchemaImportsAndInclude(Schem
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oracle.fabric.common.wsdl.SchemaBuilder.loadEmbeddedSchemas(SchemaBuilder.ja
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oracle.fabric.common.wsdl.SchemaBuilder.loadSchemasFromWSDL(SchemaBuilder.ja
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oracle.fabric.common.wsdl.SchemaBuilder.loadAllSchemas(SchemaBuilder.java:21
4)
oracle.fabric.common.wsdl.SchemaManager.loadAllXSD(SchemaManager.java:209)
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ava:424)
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oracle.fabric.composite.model.CompositeModel.getWSDLManager(CompositeModel.j
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oracle.integration.platform.blocks.adapter.AbstractAdapterBindingComponent.g
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oracle.integration.platform.blocks.adapter.AdapterReference.loadDefinition(A
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oracle.integration.platform.blocks.adapter.AdapterReference.load(AdapterRefe
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oracle.integration.platform.blocks.adapter.AdapterReference.load(AdapterRefe
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oracle.integration.platform.blocks.deploy.CompositeDeploymentConnection.depl
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oracle.integration.platform.blocks.deploy.CompositeDeploymentManagerImpl.ini
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sun.reflect.NativeMethodAccessorImpl.invoke0(NativeMethodAccessorImpl.java:?
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java.lang.reflect.Method.invoke(Method.java:575)
org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopU
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org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint
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org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(Reflect
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oracle.integration.platform.blocks.deploy.DeploymentEventPublisher.invoke(De
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org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopPro
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oracle.integration.platform.blocks.deploy.servlet.BaseDeployProcessor.deploy
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rk(DeployProcessor.java:122)
oracle.integration.platform.blocks.deploy.servlet.DeployProcessor.doDeployWo
rk(DeployProcessor.java:107)
oracle.integration.platform.blocks.deploy.servlet.DeployProcessor.doDeploy(D
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oracle.integration.platform.blocks.deploy.servlet.DeployProcessor.process(De
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oracle.integration.platform.blocks.deploy.servlet.CompositeDeployerServlet.d
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oracle.integration.platform.blocks.deploy.servlet.CompositeDeployerServlet.d
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javax.servlet.http.HttpServlet.service(HttpServlet.java:700)
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oracle.security.jps.ee.http.JpsAbsFilter.doFilter(JpsAbsFilter.java:98)
oracle.security.jps.ee.http.JpsFilter.doFilter(JpsFilter.java:70)
weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:55)
oracle.security.jps.ee.http.JpsAbsFilter$1.run(JpsAbsFilter.java:111)
oracle.security.jps.util.JpsSubject.doAsPrivileged(JpsSubject.java:299)
oracle.security.jps.ee.util.JpsPlatformUtil.runJaasMode(JpsPlatformUtil.java
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oracle.security.jps.ee.http.JpsAbsFilter.runJaasMode(JpsAbsFilter.java:94)
oracle.security.jps.ee.http.JpsAbsFilter.doFilter(JpsAbsFilter.java:98)
oracle.security.jps.ee.http.JpsFilter.doFilter(JpsFilter.java:70)
weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:55)
oracle.dms.servlet.DMSServletFilter.doFilter(DMSServletFilter.java:86)
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weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.wrapR
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weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(W
ebAppServletContext.java:3681)
weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubjec
t.java:308)
weblogic.security.service.SecurityManager.runAs(SecurityManager.java:116)
weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletC
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weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:142
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My questions are:
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We encountered the following locked thread issue. Refer to the thread dump logs.
Any idea on the root cause of the issue? It seens to us that it is the weblogic app server codes that are causing the locked threads.
Will appreciate any advise.
"ExecuteThread: '0' for queue: 'weblogic.socket.Muxer'" id=22 idx=0x50 tid=329 prio=5 alive, in native, blocked, daemon
-- Blocked trying to get lock: java/lang/String@0x9a73910[fat lock]
at jrockit/vm/Threads.waitForUnblockSignal()V(Native Method)
at jrockit/vm/Locks.fatLockBlockOrSpin(Locks.java:1674)[optimized]
at jrockit/vm/Locks.lockFat(Locks.java:1775)[optimized]
at jrockit/vm/Locks.monitorEnterSecondStageHard(Locks.java:1311)[optimized]
at jrockit/vm/Locks.monitorEnterSecondStage(Locks.java:1258)[optimized]
at jrockit/vm/Locks.monitorEnter(Locks.java:2455)[optimized]
at weblogic/socket/EPollSocketMuxer.processSockets(EPollSocketMuxer.java:153)
at weblogic/socket/SocketReaderRequest.run(SocketReaderRequest.java:29)
at weblogic/socket/SocketReaderRequest.execute(SocketReaderRequest.java:42)
at weblogic/kernel/ExecuteThread.execute(ExecuteThread.java:145)
at weblogic/kernel/ExecuteThread.run(ExecuteThread.java:117)
at jrockit/vm/RNI.c2java(IIIII)V(Native Method)
-- end of trace
"ExecuteThread: '2' for queue: 'weblogic.socket.Muxer'" id=24 idx=0x58 tid=331 prio=5 alive, in native, blocked, daemon
-- Blocked trying to get lock: java/lang/String@0x9a73910[fat lock]
at jrockit/vm/Threads.waitForUnblockSignal()V(Native Method)
at jrockit/vm/Locks.fatLockBlockOrSpin(Locks.java:1674)[optimized]
at jrockit/vm/Locks.lockFat(Locks.java:1775)[optimized]
at jrockit/vm/Locks.monitorEnterSecondStageHard(Locks.java:1311)[optimized]
at jrockit/vm/Locks.monitorEnterSecondStage(Locks.java:1258)[optimized]
at jrockit/vm/Locks.monitorEnter(Locks.java:2455)[optimized]
at weblogic/socket/EPollSocketMuxer.processSockets(EPollSocketMuxer.java:153)
at weblogic/socket/SocketReaderRequest.run(SocketReaderRequest.java:29)
at weblogic/socket/SocketReaderRequest.execute(SocketReaderRequest.java:42)
at weblogic/kernel/ExecuteThread.execute(ExecuteThread.java:145)
at weblogic/kernel/ExecuteThread.run(ExecuteThread.java:117)
at jrockit/vm/RNI.c2java(IIIII)V(Native Method)
-- end of trace
"ExecuteThread: '1' for queue: 'weblogic.socket.Muxer'" id=23 idx=0x54 tid=330 prio=5 alive, in native, daemon
at jrockit/ext/epoll/EPoll.epollWait0(IIII)I(Native Method)
at jrockit/ext/epoll/EPoll.epollWait(EPoll.java:103)
at weblogic/socket/EPollSocketMuxer.processSockets(EPollSocketMuxer.java:156)
^-- Holding lock: java/lang/String@0x9a73910[fat lock]
at weblogic/socket/SocketReaderRequest.run(SocketReaderRequest.java:29)
at weblogic/socket/SocketReaderRequest.execute(SocketReaderRequest.java:42)
at weblogic/kernel/ExecuteThread.execute(ExecuteThread.java:145)
at weblogic/kernel/ExecuteThread.run(ExecuteThread.java:117)
at jrockit/vm/RNI.c2java(IIIII)V(Native Method)
-- end of traceThis is standard behavior for the socket muxer threads. Only one of the epoll muxer threads is actually holding the lock at any one time. Here is the output of part of my thread dump on Linux with WLS 10.3.4 on JRockit on startup. The server is not hung up at all. Make a request on the server and take another thread dump and you'll see the lock change.
1st dump with ExecuteThread 1 waiting to get the lock from ExecuteThread 2
"ExecuteThread: '1' for queue: 'weblogic.socket.Muxer'" id=25 idx=0x58 tid=26836 prio=5 alive, blocked, native_blocked, daemon
-- Blocked trying to get lock: java/lang/String@0xe82d6ec0[thin lock]
at jrockit/vm/Threads.sleep(I)V(Native Method)
at jrockit/vm/Locks.waitForThinRelease(Locks.java:955)
at jrockit/vm/Locks.monitorEnterSecondStageHard(Locks.java:1083)
at jrockit/vm/Locks.monitorEnterSecondStage(Locks.java:1005)
at jrockit/vm/Locks.monitorEnter(Locks.java:2179)
at weblogic/socket/EPollSocketMuxer.processSockets(EPollSocketMuxer.java:153)
at weblogic/socket/SocketReaderRequest.run(SocketReaderRequest.java:29)
at weblogic/socket/SocketReaderRequest.execute(SocketReaderRequest.java:42)
at weblogic/kernel/ExecuteThread.execute(ExecuteThread.java:145)
at weblogic/kernel/ExecuteThread.run(ExecuteThread.java:117)
at jrockit/vm/RNI.c2java(IIIII)V(Native Method)
-- end of trace
"ExecuteThread: '2' for queue: 'weblogic.socket.Muxer'" id=26 idx=0x5c tid=26837 prio=5 alive, in native, daemon
at jrockit/ext/epoll/EPoll.epollWait0(ILjava/nio/ByteBuffer;II)I(Native Method)
at jrockit/ext/epoll/EPoll.epollWait(EPoll.java:115)
at weblogic/socket/EPollSocketMuxer.processSockets(EPollSocketMuxer.java:156)
^-- Holding lock: java/lang/String@0xe82d6ec0[thin lock]
at weblogic/socket/SocketReaderRequest.run(SocketReaderRequest.java:29)
at weblogic/socket/SocketReaderRequest.execute(SocketReaderRequest.java:42)
at weblogic/kernel/ExecuteThread.execute(ExecuteThread.java:145)
at weblogic/kernel/ExecuteThread.run(ExecuteThread.java:117)
at jrockit/vm/RNI.c2java(IIIII)V(Native Method)
-- end of trace2nd dump after the server servers a request with ExecuteThread 2 waiting to get the lock from ExecuteThread 1
"ExecuteThread: '1' for queue: 'weblogic.socket.Muxer'" id=25 idx=0x58 tid=26836 prio=5 alive, in native, daemon
at jrockit/ext/epoll/EPoll.epollWait0(ILjava/nio/ByteBuffer;II)I(Native Method)
at jrockit/ext/epoll/EPoll.epollWait(EPoll.java:115)
at weblogic/socket/EPollSocketMuxer.processSockets(EPollSocketMuxer.java:156)
^-- Holding lock: java/lang/String@0xe82d6ec0[fat lock]
at weblogic/socket/SocketReaderRequest.run(SocketReaderRequest.java:29)
at weblogic/socket/SocketReaderRequest.execute(SocketReaderRequest.java:42)
at weblogic/kernel/ExecuteThread.execute(ExecuteThread.java:145)
at weblogic/kernel/ExecuteThread.run(ExecuteThread.java:117)
at jrockit/vm/RNI.c2java(IIIII)V(Native Method)
-- end of trace
"ExecuteThread: '2' for queue: 'weblogic.socket.Muxer'" id=26 idx=0x5c tid=26837 prio=5 alive, blocked, native_blocked, daemon
-- Blocked trying to get lock: java/lang/String@0xe82d6ec0[fat lock]
at jrockit/vm/Threads.waitForUnblockSignal()V(Native Method)
at jrockit/vm/Locks.fatLockBlockOrSpin(Locks.java:1411)
at jrockit/vm/Locks.lockFat(Locks.java:1512)
at jrockit/vm/Locks.monitorEnterSecondStageHard(Locks.java:1054)
at jrockit/vm/Locks.monitorEnterSecondStage(Locks.java:1005)
at jrockit/vm/Locks.monitorEnter(Locks.java:2179)
at weblogic/socket/EPollSocketMuxer.processSockets(EPollSocketMuxer.java:153)
at weblogic/socket/SocketReaderRequest.run(SocketReaderRequest.java:29)
at weblogic/socket/SocketReaderRequest.execute(SocketReaderRequest.java:42)
at weblogic/kernel/ExecuteThread.execute(ExecuteThread.java:145)
at weblogic/kernel/ExecuteThread.run(ExecuteThread.java:117)
at jrockit/vm/RNI.c2java(IIIII)V(Native Method)
-- end of traceHere is a blog on this topic: http://jojovedder.blogspot.com/2009/05/weblogic-socket-muxers-are-not-stuck.html -
Given from scjp
1.public static void main(String[] args) {
2. NameRunnable nr = new NameRunnable();
3. Thread t1 = new Thread(nr);
4. t1.start();
5. t1.join();
}There are some questions which i made up myself to test how i understand about the thread issue and I really need some experts to confirm about it.
Question 1: At line 3, how many threads we have now ?
my answer is
there are 2 threads. the first one is main thread and the second one is t.
I am not sure about the t thread because in the book, they indicate that after instantiating the thread,
we just have a thread object but not a true thread.
Question 2: At line 4, after t1.start(), which thread will be executed first.
My answer is
we dont know because it depends on the scheduler.
Question 3: what t1.join() does ?
my answer is
blablabla.What I am thinking is t.join() joins the current thread to the end of t so that when t finishes the current thread can run again. However, which one is the current thread now. That is why I am stuck
Please help me. I appreciate
Edited by: newbie on Nov 25, 2010 4:46 PM
Edited by: newbie on Nov 25, 2010 4:47 PM
Edited by: newbie on Nov 25, 2010 4:49 PMnewbie wrote:
Given from scjp
public static void main(String[] args) {
NameRunnable nr = new NameRunnable();
Thread t1 = new Thread(nr);
t1.start();
t1.join();
}There are some questions which i made up myself to test how i understand about the thread issue and I really need some experts to confirm about it.
Question 1: At line 3, how many threads we have now ?
my answer is
there are 2 threads. the first one is main thread and the second one is t.
I am not sure about the t thread because in the book, they indicate that after instantiating the thread,
we just have a thread object but not a true thread.
Don't use code blocks for prose. It won't autowrap and can lead to display problems if a line is too long.
Which is line 3?
What do you mean by "how many threads to we have?" Do you mean how many Thread objects exist, or how many threads (lower case "t") are executing.
After you have called t1.start(), there are at least 2 threads executing--the main thread, and the one you started. I say "at least" because the JVM has some administrative threads of its own.
Question 2: At line 4, after t1.start(), which thread will be execute first.
My answer is
we dont know because it depends on the scheduler.
Correct. And don't think of one executing "first." They can take turns, or they can both execute at the same time (if you have a multicore or multi-CPU machine).
Question 3: what t1.join() does ?
my answer is
blablabla.What I am thinking is t.join() joins the current thread to the end of t so that when t finishes the current thread can run again. However, which one is the current thread now. That is why I am stuck
Please help me. I appreciateDid you read [url http://download.oracle.com/javase/6/docs/api/java/lang/Thread.html#join()]the docs for join()? They tell you exactly what it does. If you don't understand after reading, post again. -
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I have a servlet and it gets the information from the database and put the information in a bean . In the servlet, the bean is placed in session object. The code is as follows:
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%>
My question is :
Is there any safe threading issue in this procedure..to be specific is that session object is accessable by any other client calling same time the servlet..
Any explanation will be appreciated.
ShakilcIt is quite possible that the session can be accessed by two threads. This would be the case if the user accesses your servlet from two browser windows (or tabs). Browsers have different behaviors with regard to interacting with your application sessions. For example, two IE windows will be treated as two sessions, whereas, two Netscape tabs (not windows) will be treated as a single session. This behavior is browser specific. So, it is quite likely that you may be have two threads accessing your session at the same time. The session implementation is typically synchronized, so that two or more threads cannot modify a session value at the same time, but, one thread can immediately overwrite a value stored by another thread. This is normal behavior and typically acceptable behavior.
Hope this answers your question.
Sonny -
Deadlock with thread issues while generating reports with Crystal Report XI
We are facing deadlock with thread issues while generating report with Crystal Report XI
Version Number is 11.0 and the database used is Oracle
In the log file on line number 74350 by 2008/12/16 13:35:54 there is a dead lock with Thread: u20184u2019 is waiting to acquire lock for 'com.crystaldecisions.reports.queryengine.av@15214b9' which is held by the Thread: '0'.
And a dead lock with Thread: u20180u2019 is waiting to acquire lock for 'com.crystaldecisions.reports.queryengine.av@15214b9' which is held by the Thread: '4'.
Exactly after 10 minutes we can see the thread 4 and 0 are declared as STUCK by 2008/12/16 13:45:54 .
Is this an existing issue with Crystal Report?
Is there some solution for this problem?
THE LOG FILE INFORMATION IS GIVEN BELOW
[deadlocked thread] [ACTIVE] ExecuteThread: '4' for queue: 'weblogic.kernel.Default (self-tuning)':
Thread '[ACTIVE] ExecuteThread: '4' for queue: 'weblogic.kernel.Default (self-tuning)'' is waiting to acquire lock 'com.crystaldecisions.reports.queryengine.av@15214b9' that is held by thread '[ACTIVE] ExecuteThread: '0' for queue: 'weblogic.kernel.Default (self-tuning)''
Stack trace:
com.crystaldecisions.reports.queryengine.av.V(Unknown Source)
com.crystaldecisions.reports.queryengine.av.do(Unknown Source)
com.crystaldecisions.reports.queryengine.as.if(Unknown Source)
com.crystaldecisions.reports.reportdefinition.datainterface.j.c(Unknown Source)
com.crystaldecisions.reports.reportdefinition.datainterface.j.a(Unknown Source)
com.crystaldecisions.reports.reportdefinition.datainterface.j.a(Unknown Source)
com.crystaldecisions.reports.reportdefinition.cy.b(Unknown Source)
com.crystaldecisions.reports.reportdefinition.cy.long(Unknown Source)
com.crystaldecisions.reports.reportdefinition.a1.o(Unknown Source)
com.crystaldecisions.reports.reportdefinition.a1.a(Unknown Source)
com.crystaldecisions.reports.common.ab.a(Unknown Source)
com.crystaldecisions.reports.common.ab.if(Unknown Source)
com.crystaldecisions.reports.reportdefinition.a1.if(Unknown Source)
com.crystaldecisions.reports.reportdefinition.a1.o(Unknown Source)
com.crystaldecisions.reports.reportengineinterface.a.a(Unknown Source)
com.crystaldecisions.reports.reportengineinterface.a.a.b.a(Unknown Source)
com.crystaldecisions.reports.sdk.ReportClientDocument.open(Unknown Source)
com.sysarris.aris.crystalreports.RepServlet.generateReport(RepServlet.java:65)
com.sysarris.aris.crystalreports.RepServlet.doPost(RepServlet.java:40)
javax.servlet.http.HttpServlet.service(HttpServlet.java:763)
javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:225)
weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:127)
weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:272)
weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:165)
weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3153)
weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:1973)
weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:1880)
weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1310)
weblogic.work.ExecuteThread.execute(ExecuteThread.java:207)
weblogic.work.ExecuteThread.run(ExecuteThread.java:179)
[deadlocked thread] [ACTIVE] ExecuteThread: '0' for queue: 'weblogic.kernel.Default (self-tuning)':
Thread '[ACTIVE] ExecuteThread: '0' for queue: 'weblogic.kernel.Default (self-tuning)'' is waiting to acquire lock 'com.crystaldecisions.reports.queryengine.av@12e0415' that is held by thread '[ACTIVE] ExecuteThread: '4' for queue: 'weblogic.kernel.Default (self-tuning)''
Stack trace:
com.crystaldecisions.reports.queryengine.av.V(Unknown Source)
com.crystaldecisions.reports.queryengine.av.do(Unknown Source)
com.crystaldecisions.reports.queryengine.as.if(Unknown Source)
com.crystaldecisions.reports.reportdefinition.datainterface.j.c(Unknown Source)
com.crystaldecisions.reports.reportdefinition.datainterface.j.a(Unknown Source)
com.crystaldecisions.reports.reportdefinition.datainterface.j.a(Unknown Source)
com.crystaldecisions.reports.reportdefinition.cy.b(Unknown Source)
com.crystaldecisions.reports.reportdefinition.cy.long(Unknown Source)
com.crystaldecisions.reports.reportdefinition.a1.o(Unknown Source)
com.crystaldecisions.reports.reportdefinition.a1.a(Unknown Source)
com.crystaldecisions.reports.common.ab.a(Unknown Source)
com.crystaldecisions.reports.common.ab.if(Unknown Source)
com.crystaldecisions.reports.reportdefinition.a1.if(Unknown Source)
com.crystaldecisions.reports.reportdefinition.a1.o(Unknown Source)
com.crystaldecisions.reports.reportengineinterface.a.a(Unknown Source)
com.crystaldecisions.reports.reportengineinterface.a.a.b.a(Unknown Source)
com.crystaldecisions.reports.sdk.ReportClientDocument.open(Unknown Source)
com.sysarris.aris.crystalreports.RepServlet.generateReport(RepServlet.java:65)
com.sysarris.aris.crystalreports.RepServlet.doPost(RepServlet.java:40)
javax.servlet.http.HttpServlet.service(HttpServlet.java:763)
javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:225)
weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:127)
weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:272)
weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:165)
weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3153)
weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:1973)
weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:1880)
weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1310)
weblogic.work.ExecuteThread.execute(ExecuteThread.java:207)
weblogic.work.ExecuteThread.run(ExecuteThread.java:179)
Can you please suggest any work around for this?I'm not referring to Servlet threading issues.
I'll clarify.
You have two threads, both entering ReportClientDocument.open(...) method.
Thread 4 is waiting to acquire 'com.crystaldecisions.reports.queryengine.av@15214b9'
Thread 0 is waiting to acquire ''com.crystaldecisions.reports.queryengine.av@12e0415'
So I'm thinking ??? are they the same objects?
My specific question concerning the ReportClientDocument is that both are calling open - i.e., trying to open a new report. You wouldn't be trying to open different reports using the same ReportClientDocument - so was wondering if you've cached the RCD and trying to open two different reports at the same time on the same instance via different threads.
You'd normally tie a ReportClientDocument instance to a HTTP Session, to ensure each user gets their own copy.
Sincerely,
Ted Ueda -
JPS thread issues and Tag Libs
I was curious as to the thread issues with using Tag Libs inside of JPS'.
I realize that many threads can access an individual JSP and that a JSP (at least in tomcat) uses the same instance of its tag over and over again.
But I have the following questions:
Are there thread race issues with using tags?
If there are thread race issues wouldn't it be a bad idea to use the setter methods on a tag or have any instance level variables in a tag?
Is the access to the tag synchronized in the creation of the JSP/Servlet?
Thanks for your time,
NateI actually decompiled the JSP that was created by tomcat and it (the complied JSP) is actually using a factory to get an instance of a tag. When the complied JSP is done with the Tag instance it calls the release() method on the Tag and then the factory is allowed to reuse that Tag.
So, basically when Tags are used like they are supposed to be, there are no threading/race issues.
I have downloaded the Tag specs, but haven't been able to read them yet. After I do get the chance to read them, I will try and post my findings. -
Memory leaks and multi threading issues in managed client.
In our company we use a lot of Oracle, and after the release of the managed provider we migrated all applications to it. First the things were very impressive : the new client was faster, but after some days applications that uses 100MB with old client goes to 1GB and up. The memory is not the only issue, we use a lot of multi threading, and we experience connection drops and not disposal, after 1 days working one of the application had over 100 sessions on the server. I think there is something wrong with connection pool and multi threading.
Is someone experience same problems.
Yesterday we went back with unmanaged provider. Now things are back to normal.connection drops: did you try to use "Validate Connection=true" parameter in your connection string?
the new client was faster: are you sure with this statement? Even in 64bit environment? I got quite serious performance problems when running application under 64bit process: https://forums.oracle.com/thread/2595323 -
Hi Guys! Will you share your thoughts on a Thread issue?
Hi! I am working on figuring out how to get my application to use threads to enable the simultaneous movement of (n) balls across the JFrame area. The task is to enable the user to click on the application and with each click a new ball should be created as a Thread and then it should bounce back and forth across the screen.
I have been working on this now for a couple of days. It would be really great if one of you guys could help me! :-)
Here are my specific issues:
I am using the mousePressed() method to generate the data needed to instantiate a Ball object. However, I cannot get it to work as a Thread.
I tried calling the start() method on it but all that happens is the application stays blank.
I cannot get this thing to work -and I really need to make it work today -- Please --- is there a sweetheart out there who will take a minute to help? ;-)
Jennifer
My code is below:
Balls.java
import java.util.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Balls extends JFrame implements MouseListener
private int x, y, r, g, b;//Variables to hold x,y and color values
private Vector basketOBalls;//Hold all of the Ball objects (and Threads created)
private Ball ballFactory;//Ball objects created here
Method Name: Balls()
Return Value: none
Input Parameters: None
Method Description: Constructor
public Balls()
//call to super for Title of app
super( " Bouncing Balls " );
//Listen for mouse events
addMouseListener( this );
//instantiate the basketOBalls object
basketOBalls = new Vector(20);
//Set Initial JFrame Window Size
setSize( 400, 400 );
//Show it!
show();
}//EOConstructor
Method Name: mousePressed(MouseEvent e)
Return Value: none
Input Parameters: MouseEvent
Method Description: This takes the info from the users
mouse click and creates a new Ball Object and then adds it
to the basketOBalls Vector. Presently, it (incorrectly?) also
calls the repaint() method in order to draw the ball to the
screen.
public void mousePressed( MouseEvent e )
x = e.getX();//set x value
y = e.getY();//set y value
r = 1 + (int) ( 254 * Math.random() );//set red value
g = 1 + (int) ( 254 * Math.random() );//set green value
b = 1 + (int) ( 254 * Math.random() );//set blue value
Color colorin = new Color( r, g, b );
ballFactory = new Ball( x, y, colorin );
//new Thread(ballFactory).start(); //This is the Problem area!!!!!!!!!!!!!!!!!!!!!
basketOBalls.addElement( ballFactory );
repaint();
}//EOmP
Method Name: paint( Graphics g )
Return Value: none
Input Parameters: Graphics Object g
Method Description: Walk through the Vector to
explicitly cast each object back as a Ball and
then calls the Ball draw() and ball move() methods
in order to make the balls move on the screen.
public void paint( Graphics g )
Ball b;
for( int i = 0; i < basketOBalls.size(); i++)
b = (Ball) (basketOBalls.elementAt(i));
b.draw(g);
b.move();
}//EOFor
}//EOpaint
Method Name: main()
Return Value: none
Input Parameters: String args[]
Method Description: This makes it all go.
public static void main( String args[] )
Balls app = new Balls();
app.addWindowListener(
new WindowAdapter()
public void windowClosing( WindowEvent e )
System.exit(0);
}//EOwindowClosing Method
}//EOWindowAdapter Method
);//EOaddWindowListener Argument
}//EOMain
public void mouseClicked( MouseEvent e ) { }
public void mouseReleased( MouseEvent e ) { }
public void mouseEntered( MouseEvent e ) { }
public void mouseExited( MouseEvent e ) { }
}//EOFBall.java
import java.util.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Ball extends JFrame //implements Runnable
public static final int APP_SIZE = 400;//set bounds for screen area
public static final int RADIUS = 15;//set size of balls
private Color bgColor = java.awt.Color.lightGray;//may be used to clear background of JFrame
private int x, y;//x & y coordinates
private int speedX, speedY;//distances to use to redraw the balls
private Color color = null;//the color of a ball
Method Name: Ball(int initX, int initY, Color colorin)
Return Value: none
Input Parameters: int, int , color
Method Description: Constructor that creates a Ball object
public Ball(int initX, int initY, Color colorin)
x = initX;
y = initY;
color = colorin;
speedX = (int)(1 + (Math.random() * 10));
speedY = (int)(1 + (Math.random() * 10));
Method Name: move()
Return Value: none
Input Parameters: none
Method Description: This calculates the balls position and keeps it within
the 400 pixel size of the application frame.
public void move()
x += speedX;
y += speedY;
if ((x - RADIUS < 0) || (x + RADIUS > APP_SIZE))
speedX = -speedX;
x += speedX;
if ((y - RADIUS < 0) || (y + RADIUS > APP_SIZE))
speedY = -speedY;
y += speedY;
} //EOMove
Method Name: draw(Graphics bg)
Return Value: none
Input Parameters: graphics
Method Description: This method is how the ball draws itself
public void draw(Graphics bg)
bg.setColor( color );
bg.fillOval(x - RADIUS, y - RADIUS, 2 * RADIUS, 2 * RADIUS);
//PROBLEM AREA PROBLEM AREA PROBLEM AREA PROBLEM AREA PROBLEM AREA PROBLEM AREA
Method Name: run()
Return Value: none
Input Parameters: none
Method Description: This method is called by start() in the Balls.java file
found in the mousePressed() method. however, it does not work properly.
public void run()
while(true)
try
Thread.sleep(100);
move();
draw(g);
repaint();
catch(Exception e)
e.printStackTrace( System.out );
}//EOFThere needs to be only one thread. On every mouse pressed just add a new Ball object to the vector located in Balls class. That thread need only invoke a repaint on your main class called Balls.
public class Balls extends JFrame implements Runnable,MouseListener{
Vector vector = new Vector();
public static void main(String[] args){
Balls balls = new Balls(); balls.setSize(400,400);
balls.setVisible(true);
Thread thread = new Thread(this);
thread.start();
public void run(){
while(true){
repaint();
try{
Thread.sleep(4000); //delay
}catch(InterruptedException e){}
public void paint(Graphics){
for(i=0; i<vector.size(); i++){
Ball b = (Ball)vector.elementAt(i);
reposition(b);
g.drawArc(b.getX(),b.getY(),0,360);
public void reposition(Ball b){
// reposition ball using balls get/set methods.
public void MouseClicked(MouseEvent e){
// add a new ball to vector.
public class Ball{
int x,y;
public int getX(){ return x; }
public int getY(){ return y; }
public int setX(int x){ this.x = x; }
public int setY(int y){ this.y = y; }
Do check the syntax and compilation errors. The code above should give you some idea for approach. -
Thread issue when delete socket
I've got a new problem: when I try to close the socket by deleting it, a thread marshalling issue has appeared:
void MainPage::PutOutFire()
if (CoreApplication::Properties->HasKey("client"))
// Remove the socket from the list of application properties as we are about to close it.
StreamSocket^ socket = dynamic_cast<StreamSocket^>(CoreApplication::Properties->Lookup("client"));
CoreApplication::Properties->Remove("client");
// Close the socket.
Dispatcher->RunAsync(Windows::UI::Core::CoreDispatcherPriority::Normal, ref new Windows::UI::Core::DispatchedHandler([this, &socket]()
if (socket)
delete socket;//pivot of crash!!!
socket = nullptr;
bIsConnected = false;
NotifyUser("Client closed.", NotifyType::StatusMessage);
else
NotifyUser("Client already closed or not connected.", NotifyType::WarningMessage);
This is called by the button event handler.
Then I get this error:
Microsoft C++ exception: Platform::WrongThreadException ^ at memory location 0x0545DD48. HRESULT:0x8001010E The application called an interface that was marshalled for a different thread.
WinRT information: The application called an interface that was marshalled for a different thread.
I used the Dispatcher, and I put it in the UI thread, but the issue is still there.I don't think you have to delete it. Just set it to nullptr, it will self destruct by itself due to ref counting.
-
Issue with - Connector Framework SAP EP 7.0
HI
Need assitance on usage of connector framework to connect to SAP R/3 using SSO.
I am trying to call a BAPI from a jsp iView using sap connector framework.
Release : EP (SAP NetWeaver 7.0 (2004s) SPS 12).
Steps I did so far :
1. imported following jars in my project :
a. activation.jar
b. connector.jar
c. GenericConnector.jar
d. jaas.jar
e. jta.jar
f. portal_services_api_lib.jar
2. declared import of class:
<%@ page import = "com.sapportals.portal.ivs.cg.*" %>
<%@ page import = "com.sapportals.connector.connection.IConnection" %>
<%@ page import = "com.sapportals.connector.execution.structures.*" %>
<%@ page import = "com.sapportals.connector.execution.functions.IInteraction" %>
<%@ page import = "com.sapportals.connector.execution.functions.IInteractionSpec" %>
3. appended portalapp.xml with :
<application-config>
<property name="SharingReference" value=",com.sap.portal.htmlb,com.sap.portal.pagebuilder,com.sap.portal.themes.lafservice,com.sap.portal.navigation.service,com.sap.portal.navigation.helperservice,com.sap.portal.license.runtime,com.sap.portal.common.commonservices,SAPJ2EE::library:com.sap.portal.common,com.sap.portal.ivs.connectorservice"/>
</application-config>
4. added following code :
IConnectorGatewayService cgService = (IConnectorGatewayService) PortalRuntime.getRuntimeResources().getService(IConnectorGatewayService.KEY);
IConnection connection = cgService.getConnection("ABC", request);
<b> IInteraction ix = connection.createInteractionEx();</b>
5. Verfied connectivity of system alias ABC with connetion test from portal.
When I test the repective iview after deployment it fails on the bold line with an error 'unable to deploy jsp'. I could verify that cgService and connection objects were initialized.
Will appreciate expert comments/suggestions on the issue.
Thanks and cheers,
Amit.Hi,
When you select that property, you get a value field in the bottom of the screen to enter the Cutom values.
You can give the value there and click on the Set button.
Also check the dbpool properties for this error code.
Regards,
Venkat -
Deployment issue for Axis Framework in PI 7.0 server
Hi Experts,
I have one issue regarding the deployment of AXIS framework for Receiver SOAP adapter in PI 7.0 server.
Moreover i have a requirement to use UserNameToken security with PasswordDigest.
I have deployed aii_af_axisprovider.sda file into PI server with relevant .jar files.
However when i am checking through url http://host:port/XIAxisAdapter/MessageServlet its giving that optional components are missing
1)XMLSecurityAPI
2)Apache WSS4j
3)Apache Addressing
In SAP Note 1039369 its mentioned about to use wss4j-1.5.4.jar,xmlsec-1.4.0.jar,opensaml-1.0.1.jar files.
Now my concern is to enable UserNameToken Security with PasswordDigest which version of Wss4j is required along with xmlsec version and do we need opensaml-1.0.jar file for same requirement.
Is it sufficient if we deploy wss4j-1.5.4.jar and xmlsec-1.3.0.jar to enable the UserName Token secuiry.
Request you all to please confirm the same.
Thanks in advance
Regards
NileshI have the same requirement. Just wanted to know if opensaml-1.0.jar file is required to enable the UserName Token secuiry.
-
NW2004s SPS10: color issues wirh light framework Page
Hi,
we're using NW2004s SPS10 and the light framework page. Everything works fine except for the following two issues:
1.) The color for the personalisation link in the masthead is not the color we've defined in the theme editor. Example: http://img214.imageshack.us/img214/9967/image1ub0.gif As cou cann see, the link is displayed in in the default color for links (blue). How can we change the color?
2.) The color for the commands in the page title bar doensn't match our requirements. How can whe change the color? Example: http://img440.imageshack.us/img440/1060/image2be9.gif
Thankds in advance
Best regards
ThomasSravanth wrote:
Hi All,
I'm facing a problem regarding changing colors in a OA Framework Page. We are using Apps R12. with OA Framework component 12.1.1
There are 2 urgent Issues for me
1. To change the Color of the Header Component(Presently it is in Light Blue Color) and To change the Image on the top of the Page(The Image which stands as a back ground for Oracle Logo)(Thick Blue in color)
only the look and feel of the External Site Visitor Page must be changed. All the other pages should be having the default look and feel of oracle
Can any one suggest me on how to achieve the required output...
Thanks and Regards,
S K SravanthHi Sravanth,
Take a look at Atul's blog entry for this, he has documented it nicely.
Thanks
Shailendra
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