Closed. This question needs debugging details. It is not currently accepting answers.
Edit the question to include desired behavior, a specific problem or error, and the shortest code necessary to reproduce the problem. This will help others answer the question.
Closed 7 years ago.
Improve this question
I am trying to add a new Database JDBC connection in iReport 5.6.0. Im using Microsoft SQL Server 2014 - 12.0.4213.0 . I have added mysql-connector-java-5.1.38-bin.jar in the classpath of ireport tool.
is the screenshot of the connecting details.
When I test the connection it gives me the error msg Message:
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
Last packet sent to the server was 0 ms ago.
Level:
SEVERE
Stack Trace:
Communications link failure Last packet sent to the server was 0 ms ago.
sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
java.lang.reflect.Constructor.newInstance(Unknown Source)
com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1074)
com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2103)
com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:718)
com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:46)
sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
java.lang.reflect.Constructor.newInstance(Unknown Source)
com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:302)
com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:282)
com.jaspersoft.ireport.designer.connection.JDBCConnection.getConnection(JDBCConnection.java:140)
com.jaspersoft.ireport.designer.connection.JDBCConnection.test(JDBCConnection.java:449)
com.jaspersoft.ireport.designer.connection.gui.ConnectionDialog.jButtonTestActionPerformed(ConnectionDialog.java:335)
com.jaspersoft.ireport.designer.connection.gui.ConnectionDialog.access$300(ConnectionDialog.java:43)
com.jaspersoft.ireport.designer.connection.gui.ConnectionDialog$4.actionPerformed(ConnectionDialog.java:290)
In the screenshot it seems that you're using MySql and not sql server as you mentioned.
Just choose the proper combination of Jar, Wizard setting and Database Vendor.
Related
I have a very simple Jmeter test plan with a thread group and supported by basic config elements.
My HTTP Request Sampler just points to the home page of the application which gives facility for login authentication.
Few facts to share
When I access the page in chrome and view the loading time in chrome developer, the same is completed in 5 seconds with embedded resources downloaded in parallel.
When I record the same through jmeter and start re-play it takes 12 seconds
Next I disabled all the non-html resources and marked the home page to download embedded resources.
When I enable the checkbox Download all embedded resources with parallel download check box and the value set at 6, jmeter goes to a hang state.
I thought that might be the issue with Jmeter setting, then i tried www.w3schools.com site, and I was able to refer on the home page and during replay all the embedded resources were downloaded.
Please help me to understand if the page i am trying to script has any security involved, where we cannot download parallel resources through script or what can be the possible correction.
The application is accessible through https protocol.
Heap Dump
"Image Fetcher 0" Id=5734 TIMED_WAITING on java.util.Vector#567840bf
at java.lang.Object.wait(Native Method)
- waiting on java.util.Vector#567840bf
at sun.awt.image.ImageFetcher.nextImage(Unknown Source)
at sun.awt.image.ImageFetcher.fetchloop(Unknown Source)
at sun.awt.image.ImageFetcher.run(Unknown Source)
"ResDownload-Thread-5659" Id=5709 TIMED_WAITING on java.util.concurrent.SynchronousQueue$TransferStack#c26b878
at sun.misc.Unsafe.park(Native Method)
- waiting on java.util.concurrent.SynchronousQueue$TransferStack#c26b878
at java.util.concurrent.locks.LockSupport.parkNanos(Unknown Source)
at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(Unknown Source)
at java.util.concurrent.SynchronousQueue$TransferStack.transfer(Unknown Source)
at java.util.concurrent.SynchronousQueue.poll(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.getTask(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
...
"ResDownload-Thread-5521" Id=5704 TIMED_WAITING on java.util.concurrent.SynchronousQueue$TransferStack#c26b878
at sun.misc.Unsafe.park(Native Method)
- waiting on java.util.concurrent.SynchronousQueue$TransferStack#c26b878
at java.util.concurrent.locks.LockSupport.parkNanos(Unknown Source)
at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(Unknown Source)
at java.util.concurrent.SynchronousQueue$TransferStack.transfer(Unknown Source)
at java.util.concurrent.SynchronousQueue.poll(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.getTask(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
...
"ResDownload-Thread-5545" Id=5703 TIMED_WAITING on java.util.concurrent.SynchronousQueue$TransferStack#c26b878
at sun.misc.Unsafe.park(Native Method)
- waiting on java.util.concurrent.SynchronousQueue$TransferStack#c26b878
at java.util.concurrent.locks.LockSupport.parkNanos(Unknown Source)
at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(Unknown Source)
at java.util.concurrent.SynchronousQueue$TransferStack.transfer(Unknown Source)
at java.util.concurrent.SynchronousQueue.poll(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.getTask(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
...
"ResDownload-Thread-5555" Id=5702 TIMED_WAITING on java.util.concurrent.SynchronousQueue$TransferStack#c26b878
at sun.misc.Unsafe.park(Native Method)
- waiting on java.util.concurrent.SynchronousQueue$TransferStack#c26b878
at java.util.concurrent.locks.LockSupport.parkNanos(Unknown Source)
at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(Unknown Source)
at java.util.concurrent.SynchronousQueue$TransferStack.transfer(Unknown Source)
at java.util.concurrent.SynchronousQueue.poll(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.getTask(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
Make sure to tick Disable cache box in the browser developer tools:
as it might be the case your browser is not making the actual requests and returning the embedded resources from disk or memory cache
Add HTTP Cache Manager to your test plan in order to mimic the browser cache.
JMeter might fail to recognise certain resources like images embedded in CSS files so it might be the case you're suffering from a JMeter bug. So you can consider using i.e. Parallel Controller as the workaround for edge cases.
If you're doing your test from enterprise and thus have a enterprise proxy, maybe the website you're hitting requires some rules to allow all resources to be downloaded, so you may need to adjust command line options:
https://jmeter.apache.org/usermanual/get-started.html#proxy_server
Also, be aware that you should not be load testing third-party websites (Google Analytics , trackers ...) that your application may be using, so use the exclude pattern to ignore this.
You say that JMeter hangs, to debug, use Help > Create a Thread Dump and show content of output file in your question.
My guess is that it's trying to establish connection , since it has no access it hangs, so you ca set in Advanced tab of HTTP Request:
Connect timeout
Response timeout
would like to post a huge JSON object, but when i try i got this error:
java.net.SocketException: Connection reset by peer: socket write error
at java.net.SocketOutputStream.socketWrite0(Native Method)
at java.net.SocketOutputStream.socketWrite(Unknown Source)
at java.net.SocketOutputStream.write(Unknown Source)
at org.apache.http.impl.io.SessionOutputBufferImpl.streamWrite(SessionOutputBufferImpl.java:126)
at org.apache.http.impl.io.SessionOutputBufferImpl.write(SessionOutputBufferImpl.java:162)
at org.apache.http.impl.io.ContentLengthOutputStream.write(ContentLengthOutputStream.java:115)
at org.apache.http.impl.io.ContentLengthOutputStream.write(ContentLengthOutputStream.java:122)
at org.apache.http.entity.StringEntity.writeTo(StringEntity.java:169)
at org.apache.http.impl.DefaultBHttpClientConnection.sendRequestEntity(DefaultBHttpClientConnection.java:158)
at org.apache.http.impl.conn.CPoolProxy.sendRequestEntity(CPoolProxy.java:162)
at org.apache.http.protocol.HttpRequestExecutor.doSendRequest(HttpRequestExecutor.java:237)
at org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:122)
at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:271)
at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:184)
at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:88)
at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:110)
at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:184)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:107)
at com.os.util.helper.microServiceHelper.AbstractMicroServiceHelper.getResultFromMicroServices(AbstractMicroServiceHelper.java:196)
at com.os.util.helper.microServiceHelper.IsheetVersionMicroserviceImpl.bulkInsertUpdateIsheetVersion(IsheetVersionMicroserviceImpl.java:75)
at com.os.gfnactions.isheet.IsheetVersionPutInMicroserviceThread.run(IsheetVersionPutInMicroserviceThread.java:36)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Socket Exception
When I am sending a large heavy json through HttpClient Post request it will give me a below error.
so how to solve below error i was study all posted question.but doesn't get a proper solution for my error.
FYI : Basically we are use spring boot api at server side. we are call that api from a application which is in java.
can you please anyone help me solve below error??
1) How to send from client side in java ?
2) How to get server side that json in java ?
You should try increase socket timeout by typing socket.setSoTimeout(number)
Documentation: https://docs.oracle.com/javase/7/docs/api/java/net/Socket.html#setSoTimeout(int)
Posting huge text it's not good idea. You should apply some pagination for this and split eg. every 200kb.
For big json files I recommend BSON http://bsonspec.org/
One of the reason it might happen is because of the request size limitation on the tomcat server. In that case you will need to increase that as mentioned on How to set the max size of upload file
I tested website performance with Jmeter 2.13, I have never used Jmeter before, When I set the number of thread is 500, it is OK, ans when set 750, there are some errors shows below. During the tests, my CPU ,bandwidth, memory,IO are not full. I have tried other ways ,such as changing maxThread of tomcat7 and so on, but they did not work, any help is appreciated!
org.apache.http.conn.HttpHostConnectException: Connection to http://10.0.0.160:8080 refused
at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:190)
at org.apache.http.impl.conn.ManagedClientConnectionImpl.open(ManagedClientConnectionImpl.java:294)
at org.apache.jmeter.protocol.http.sampler.MeasuringConnectionManager$MeasuredConnection.open(MeasuringConnectionManager.java:107)
at org.apache.http.impl.client.DefaultRequestDirector.tryConnect(DefaultRequestDirector.java:643)
at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:479)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:906)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:805)
at org.apache.jmeter.protocol.http.sampler.HTTPHC4Impl.executeRequest(HTTPHC4Impl.java:517)
at org.apache.jmeter.protocol.http.sampler.HTTPHC4Impl.sample(HTTPHC4Impl.java:331)
at org.apache.jmeter.protocol.http.sampler.HTTPSamplerProxy.sample(HTTPSamplerProxy.java:74)
at org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase.sample(HTTPSamplerBase.java:1146)
at org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase.sample(HTTPSamplerBase.java:1135)
at org.apache.jmeter.threads.JMeterThread.process_sampler(JMeterThread.java:434)
at org.apache.jmeter.threads.JMeterThread.run(JMeterThread.java:261)
at java.lang.Thread.run(Unknown Source)
Caused by: java.net.ConnectException: Connection timed out: connect
at java.net.DualStackPlainSocketImpl.connect0(Native Method)
at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)
at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.SocksSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at org.apache.http.conn.scheme.PlainSocketFactory.connectSocket(PlainSocketFactory.java:127)
at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:180)
... 14 more
There are two possibilities here.
Your server is not able handle the number of incoming connections from the same IP address. Check the size of connection pool and maximum incoming connections. Use some java tool like java melody to check total number of connections. Also check the thread-pool size and max thread settings.
Or It could be JMeter client issue. Try to run the test from two different load generators and split the load of 750. Client may not be able to establish socket connections for all the 750 users.
I have a module written on SI which is running for quite sometime without any hiccups.Lately I have seen the below error in the logs repeatedly
org.springframework.integration.MessagingException: Problem occurred while synchronizing remote to local directory
at org.springframework.integration.file.remote.synchronizer.AbstractInboundFileSynchronizer.synchronizeToLocalDirectory(AbstractInboundFileSynchronizer.java:156)
at org.springframework.integration.file.remote.synchronizer.AbstractInboundFileSynchronizingMessageSource.receive(AbstractInboundFileSynchronizingMessageSource.java:146)
at org.springframework.integration.endpoint.SourcePollingChannelAdapter.receiveMessage(SourcePollingChannelAdapter.java:111)
at org.springframework.integration.endpoint.AbstractTransactionSynchronizingPollingEndpoint.doPoll(AbstractTransactionSynchronizingPollingEndpoint.java:67)
at org.springframework.integration.endpoint.AbstractPollingEndpoint$1.call(AbstractPollingEndpoint.java:146)
at org.springframework.integration.endpoint.AbstractPollingEndpoint$1.call(AbstractPollingEndpoint.java:144)
at org.springframework.integration.endpoint.AbstractPollingEndpoint$Poller$1.run(AbstractPollingEndpoint.java:236)
at org.springframework.integration.util.ErrorHandlingTaskExecutor$1.run(ErrorHandlingTaskExecutor.java:52)
at org.springframework.core.task.SyncTaskExecutor.execute(SyncTaskExecutor.java:49)
at org.springframework.integration.util.ErrorHandlingTaskExecutor.execute(ErrorHandlingTaskExecutor.java:49)
at org.springframework.integration.endpoint.AbstractPollingEndpoint$Poller.run(AbstractPollingEndpoint.java:231)
at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:53)
at org.springframework.scheduling.concurrent.ReschedulingRunnable.run(ReschedulingRunnable.java:81)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(Unknown Source)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: java.net.SocketTimeoutException: Accept timed out
at java.net.PlainSocketImpl.socketAccept(Native Method)
at java.net.PlainSocketImpl.accept(Unknown Source)
at java.net.ServerSocket.implAccept(Unknown Source)
at java.net.ServerSocket.accept(Unknown Source)
at org.apache.commons.net.ftp.FTPClient._openDataConnection_(FTPClient.java:693)
at org.apache.commons.net.ftp.FTPClient.initiateListParsing(FTPClient.java:2990)
at org.apache.commons.net.ftp.FTPClient.initiateListParsing(FTPClient.java:2965)
at org.apache.commons.net.ftp.FTPClient.listFiles(FTPClient.java:2623)
at org.springframework.integration.ftp.session.FtpSession.list(FtpSession.java:62)
at org.springframework.integration.ftp.session.FtpSession.list(FtpSession.java:38)
at org.springframework.integration.file.remote.synchronizer.AbstractInboundFileSynchronizer.synchronizeToLocalDirectory(AbstractInboundFileSynchronizer.java:145)
... 20 more
After restarting the component the error has disappeared but still I'm curious to know the reason and fix it.
From this link I could relate that there might have been some network issue for a while after which I have started getting this error while synchronizing but the exception should have been stopped once the network connection was restored (if any network issue was there at all).
Will appreciate any help.
Try using passive ftp (google search for the difference between active and passive ftp).
Active FTP is notoriously difficult with respect to firewalls etc, because the server opens a connection back to the client. This is timing out in your stack trace above. Perhaps some ports are open others are not.
With passive mode, the client initiates the data connection.
Set the connection factory's clientMode property to
FTPClient.PASSIVE_LOCAL_DATA_CONNECTION_MODE
(2).
I am facing a very strange problem.
I am using my application with RMI for 8 month in production but since a new (big) update I dont know what is wrong.
It is a server where 3 clients connect.
And when I am using only client with a certain method I can not find anything wrong especially because all other clients work perfectly.
Is there maybe with RMI any local "cache" which should be deleted otherwise I can't tell.
Here is the output of the client's console:
C:\Users\Claudia\Desktop>java -jar CLIENT_erp_auer_client_v0_8ASASADSD.jar
java.rmi.MarshalException: error marshalling arguments; nested exception is:
java.net.SocketException: Software caused connection abort: socket write error
at sun.rmi.server.UnicastRef.invoke(Unknown Source)
at java.rmi.server.RemoteObjectInvocationHandler.invokeRemoteMethod(Unknown Sou
rce)
at java.rmi.server.RemoteObjectInvocationHandler.invoke(Unknown Source)
at $Proxy7.update(Unknown Source)
at client.entity_types.LieferscheinpositionService.aendereLieferscheinposition(
LieferscheinpositionService.java:60)
at client.lieferscheinverwaltung.TreeTableNEULieferschein.addLieferscheinpositi
onen(TreeTableNEULieferschein.java:912)
at client.lieferscheinverwaltung.TreeTableNEULieferschein.<init>(TreeTableNEULi
eferschein.java:204)
at client.lieferscheinverwaltung.LieferscheinErstellung.getTreeTableNeuLiefersc
hein(LieferscheinErstellung.java:916)
at client.lieferscheinverwaltung.LieferscheinErstellung.<init>(LieferscheinErst
ellung.java:773)
at client.lieferscheinverwaltung.LieferscheinManagement.openLieferschein(Liefer
scheinManagement.java:1055)
at client.lieferscheinverwaltung.LieferscheinManagement$9.mouseClicked(Liefersc
Thank you.