Too many EJBs??
I am trying to deploy an application with 22 EJBs. (yes, I know that's a lot...mostly for development) When I try this, I continually get the error "An error occurred while redeploying the application. Nested exception Root Cause: Syntax error in source. Syntax error in source".
When I install the application with only 21 EJBs, all seems ok. Even if I just add an "empty" EJB, I get this error. Is there a maximum allowable number of EJBs for an application? Is there a way to change this?
As always, thanks in advance!!
Sorry, as always, I forget this:
Oracle9iAS release 2 running RedHat 8.0
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Too many ejb serialization in pstore directory
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Alex/Guys... it has stopping without any intervention.
Edited by: user10455324 on Feb 22, 2010 5:30 PM -
BEA-012036 Too Many Files | Weblogic Start Up for EJB deployment
Trying to deploy EAR with EJB module inside. I am seeing the below error intermittently while deploying and now starting the weblogic server .
There is already an EAR deployed with all the Shared Libraries under APP-INF/lib. I deployed a new EAR with all the similar common shared libraries ( APP-INF/lib jar files ) packaged inside this new file.
<Apr 28, 2009 7:45:18 PM EDT> <Error> <EJB> <BEA-012036> <Compiling generated EJB classes produced the following Java compiler error message:
/prod/xxxx/prd/server/dev_xxxx/servers/mt_crd_180_15001/cache/EJBCompilerCache/f6yuykfqdn7i/com/test/xxx/ejb/rtmschema/CreditserviceSessionEjb_f0jmmq_Impl.java:17: error while writing com.test.xxx.ejb.rtmschema.CreditserviceSessionEjb_f0jmmq_Impl: /prod/xxxx/prd/server/dev_xxxx/servers/mt_crd_180_15001/cache/EJBCompilerCache/f6yuykfqdn7i/com/test/xxx/ejb/rtmschema/CreditserviceSessionEjb_f0jmmq_Impl.class (Too many open files)
(source unavailable)
1 error
>
<Apr 28, 2009 7:45:19 PM EDT> <Error> <Deployer> <BEA-149205> <Failed to initialize the application 'xxx-ear-ejb4' due to error weblogic.application.ModuleException: Exception preparing module: EJBModule(xxx-ejbschema-service.jar)
Unable to deploy EJB: xxx-ejbschema-service.jar from xxx-ejbschema-service.jar:
There are 1 nested errors:
java.io.IOException: Compiler failed executable.exec:
/prod/xxxx/prd/server/dev_xxxx/servers/mt_crd_180_15001/cache/EJBCompilerCache/f6yuykfqdn7i/com/test/xxx/ejb/rtmschema/CreditserviceSessionEjb_f0jmmq_Impl.java:17: error while writing com.test.xxx.ejb.rtmschema.CreditserviceSessionEjb_f0jmmq_Impl: /prod/xxxx/prd/server/dev_xxxx/servers/mt_crd_180_15001/cache/EJBCompilerCache/f6yuykfqdn7i/com/test/xxx/ejb/rtmschema/CreditserviceSessionEjb_f0jmmq_Impl.class (Too many open files)
(source unavailable)
1 error
at weblogic.utils.compiler.CompilerInvoker.compileMaybeExit(CompilerInvoker.java:493)
at weblogic.utils.compiler.CompilerInvoker.compile(CompilerInvoker.java:332)
at weblogic.utils.compiler.CompilerInvoker.compile(CompilerInvoker.java:340)
at weblogic.ejb.container.ejbc.EJBCompiler.doCompile(EJBCompiler.java:343)
at weblogic.ejb.container.ejbc.EJBCompiler.compileEJB(EJBCompiler.java:533)
at weblogic.ejb.container.ejbc.EJBCompiler.compileEJB(EJBCompiler.java:500)
at weblogic.ejb.container.deployer.EJBDeployer.runEJBC(EJBDeployer.java:476)
at weblogic.ejb.container.deployer.EJBDeployer.compileJar(EJBDeployer.java:798)
at weblogic.ejb.container.deployer.EJBDeployer.compileIfNecessary(EJBDeployer.java:701)
at weblogic.ejb.container.deployer.EJBDeployer.prepare(EJBDeployer.java:1234)
at weblogic.ejb.container.deployer.EJBModule.prepare(EJBModule.java:372)
at weblogic.application.internal.flow.ModuleListenerInvoker.prepare(ModuleListenerInvoker.java:93)
at weblogic.application.internal.flow.DeploymentCallbackFlow$1.next(DeploymentCallbackFlow.java:360)
at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:26)
at weblogic.application.internal.flow.DeploymentCallbackFlow.prepare(DeploymentCallbackFlow.java:56)
at weblogic.application.internal.flow.DeploymentCallbackFlow.prepare(DeploymentCallbackFlow.java:46)
at weblogic.application.internal.BaseDeployment$1.next(BaseDeployment.java:615)
at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:26)
at weblogic.application.internal.BaseDeployment.prepare(BaseDeployment.java:191)
at weblogic.application.internal.DeploymentStateChecker.prepare(DeploymentStateChecker.java:147)
at weblogic.deploy.internal.targetserver.AppContainerInvoker.prepare(AppContainerInvoker.java:61)
at weblogic.deploy.internal.targetserver.AppDeployment.prepare(AppDeployment.java:137)
at weblogic.management.deploy.internal.DeploymentAdapter$1.doPrepare(DeploymentAdapter.java:39)
at weblogic.management.deploy.internal.DeploymentAdapter.prepare(DeploymentAdapter.java:187)
at weblogic.management.deploy.internal.AppTransition$1.transitionApp(AppTransition.java:21)
at weblogic.management.deploy.internal.ConfiguredDeployments.transitionApps(ConfiguredDeployments.java:233)
at weblogic.management.deploy.internal.ConfiguredDeployments.prepare(ConfiguredDeployments.java:165)
at weblogic.management.deploy.internal.ConfiguredDeployments.deploy(ConfiguredDeployments.java:122)
at weblogic.management.deploy.internal.DeploymentServerService.resume(DeploymentServerService.java:173)
at weblogic.management.deploy.internal.DeploymentServerService.start(DeploymentServerService.java:89)
at weblogic.t3.srvr.SubsystemRequest.run(SubsystemRequest.java:64)
at weblogic.work.SelfTuningWorkManagerImpl$WorkAdapterImpl.run(SelfTuningWorkManagerImpl.java:464)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:200)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:172)
weblogic.application.ModuleException: Exception preparing module: EJBModule(xxx-ejbschema-service.jar)
Unable to deploy EJB: xxx-ejbschema-service.jar from xxx-ejbschema-service.jar:
There are 1 nested errors:
java.io.IOException: Compiler failed executable.exec:
/prod/xxxx/prd/server/dev_xxxx/servers/mt_crd_180_15001/cache/EJBCompilerCache/f6yuykfqdn7i/com/test/xxx/ejb/rtmschema/CreditserviceSessionEjb_f0jmmq_Impl.java:17: error while writing com.test.xxx.ejb.rtmschema.CreditserviceSessionEjb_f0jmmq_Impl: /prod/xxxx/prd/server/dev_xxxx/servers/mt_crd_180_15001/cache/EJBCompilerCache/f6yuykfqdn7i/com/test/xxx/ejb/rtmschema/CreditserviceSessionEjb_f0jmmq_Impl.class (Too many open files)
(source unavailable)
1 error
at weblogic.utils.compiler.CompilerInvoker.compileMaybeExit(CompilerInvoker.java:493)
at weblogic.utils.compiler.CompilerInvoker.compile(CompilerInvoker.java:332)
at weblogic.utils.compiler.CompilerInvoker.compile(CompilerInvoker.java:340)
at weblogic.ejb.container.ejbc.EJBCompiler.doCompile(EJBCompiler.java:343)
at weblogic.ejb.container.ejbc.EJBCompiler.compileEJB(EJBCompiler.java:533)
at weblogic.ejb.container.ejbc.EJBCompiler.compileEJB(EJBCompiler.java:500)
at weblogic.ejb.container.deployer.EJBDeployer.runEJBC(EJBDeployer.java:476)
at weblogic.ejb.container.deployer.EJBDeployer.compileJar(EJBDeployer.java:798)
at weblogic.ejb.container.deployer.EJBDeployer.compileIfNecessary(EJBDeployer.java:701)
at weblogic.ejb.container.deployer.EJBDeployer.prepare(EJBDeployer.java:1234)
at weblogic.ejb.container.deployer.EJBModule.prepare(EJBModule.java:372)
at weblogic.application.internal.flow.ModuleListenerInvoker.prepare(ModuleListenerInvoker.java:93)
at weblogic.application.internal.flow.DeploymentCallbackFlow$1.next(DeploymentCallbackFlow.java:360)
at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:26)
at weblogic.application.internal.flow.DeploymentCallbackFlow.prepare(DeploymentCallbackFlow.java:56)
at weblogic.application.internal.flow.DeploymentCallbackFlow.prepare(DeploymentCallbackFlow.java:46)
at weblogic.application.internal.BaseDeployment$1.next(BaseDeployment.java:615)
at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:26)
at weblogic.application.internal.BaseDeployment.prepare(BaseDeployment.java:191)
at weblogic.application.internal.DeploymentStateChecker.prepare(DeploymentStateChecker.java:147)
at weblogic.deploy.internal.targetserver.AppContainerInvoker.prepare(AppContainerInvoker.java:61)
at weblogic.deploy.internal.targetserver.AppDeployment.prepare(AppDeployment.java:137)
at weblogic.management.deploy.internal.DeploymentAdapter$1.doPrepare(DeploymentAdapter.java:39)
at weblogic.management.deploy.internal.DeploymentAdapter.prepare(DeploymentAdapter.java:187)
at weblogic.management.deploy.internal.AppTransition$1.transitionApp(AppTransition.java:21)
at weblogic.management.deploy.internal.ConfiguredDeployments.transitionApps(ConfiguredDeployments.java:233)
at weblogic.management.deploy.internal.ConfiguredDeployments.prepare(ConfiguredDeployments.java:165)
at weblogic.management.deploy.internal.ConfiguredDeployments.deploy(ConfiguredDeployments.java:122)
at weblogic.management.deploy.internal.DeploymentServerService.resume(DeploymentServerService.java:173)
at weblogic.management.deploy.internal.DeploymentServerService.start(DeploymentServerService.java:89)
at weblogic.t3.srvr.SubsystemRequest.run(SubsystemRequest.java:64)
at weblogic.work.SelfTuningWorkManagerImpl$WorkAdapterImpl.run(SelfTuningWorkManagerImpl.java:464)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:200)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:172)
at weblogic.ejb.container.deployer.EJBModule.prepare(EJBModule.java:399)
at weblogic.application.internal.flow.ModuleListenerInvoker.prepare(ModuleListenerInvoker.java:93)
at weblogic.application.internal.flow.DeploymentCallbackFlow$1.next(DeploymentCallbackFlow.java:360)
at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:26)
at weblogic.application.internal.flow.DeploymentCallbackFlow.prepare(DeploymentCallbackFlow.java:56)
Truncated. see log file for complete stacktrace
java.io.IOException: Compiler failed executable.exec:
/prod/xxxx/prd/server/dev_xxxx/servers/mt_crd_180_15001/cache/EJBCompilerCache/f6yuykfqdn7i/com/test/xxx/ejb/rtmschema/CreditserviceSessionEjb_f0jmmq_Impl.java:17: error while writing com.test.xxx.ejb.rtmschema.CreditserviceSessionEjb_f0jmmq_Impl: /prod/xxxx/prd/server/dev_xxxx/servers/mt_crd_180_15001/cache/EJBCompilerCache/f6yuykfqdn7i/com/test/xxx/ejb/rtmschema/CreditserviceSessionEjb_f0jmmq_Impl.class (Too many open files)
(source unavailable)
1 error
at weblogic.utils.compiler.CompilerInvoker.compileMaybeExit(CompilerInvoker.java:493)
at weblogic.utils.compiler.CompilerInvoker.compile(CompilerInvoker.java:332)
at weblogic.utils.compiler.CompilerInvoker.compile(CompilerInvoker.java:340)
at weblogic.ejb.container.ejbc.EJBCompiler.doCompile(EJBCompiler.java:343)
at weblogic.ejb.container.ejbc.EJBCompiler.compileEJB(EJBCompiler.java:533)
Truncated. see log file for complete stacktrace
Thanks
AbhiPut only files which needs to be 'shared' ( e.g persistent store files for jms, jta transaction store etc) on the network drive .. put all other files including logs on the local disk.. see if that makes a difference..
NAS is slower than other storage setups like SAN and DAS... -
WL10 Compiler executable.exec error "too many open files" deploying ear
When I try to deploy an ear containing a web module and some ejb modules, I obtain this error:
<Info> <J2EE Deployment SPI> <BEA-260121> <Initiating deploy operation for application, MB-ADM_EAR [archive: /wl/wlments/MB-ADM_EAR/MB-ADM_EAR.ear], to Cluster1 .>
Task 1 initiated: [Deployer:149026]deploy application MB-ADM_EAR on Cluster1.
Task 1 failed: [Deployer:149026]deploy application MB-ADM_EAR on Cluster1.
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Below the environment specifications:
JVM Version: jrockit_150_11
JVM Heap: 512
Web Logic: 10.0.1.0
Server: Hewlett Packard DL585 G2
OS: Linux / 2.6.5-7.287.3.PTF.345489.1-smp
Thank you, bye,
MarcoHello Marco.
When you try to deploy an EAR weblogic server at the time of deployment unjar's it and compiles the files and so on. Every Operating system has a limit on how many number of files can be opened by a process. If your EAR is big then the number of files which WLS will unjar will also be large hence you hit the limit. By splitting your ear into 2, you are splitting wls task into smaller parts, which means the number of files it unjars at a time is less.
The following note tells what needs to be done to avert this issue.
http://download.oracle.com/docs/cd/E12839_01/doc.1111/e14772/weblogic_server_issues.htm#CHDGFFHD -
Unable to create report. Query produced too many results
Hi All,
Does someone knows how to avoid the message "Unable to create report. Query produced too many results" in Grid Report Type in PerformancePoint 2010. When the mdx query returns large amount of data, this message appears. Is there a way to get all
the large amount in the grid anyway?
I have set the data Source query time-out under Central Administration - Manager Service applications - PerformancePoint Service Application - PerformancePoint Service Application Settings at 3600 seconds.
Here Event Viewer log error at the server:
1. An exception occurred while running a report. The following details may help you to diagnose the problem:
Error Message: Unable to create report. Query produced too many results.
<br>
<br>
Contact the administrator for more details.
Dashboard Name:
Dashboard Item name:
Report Location: {3592a959-7c50-0d1d-9185-361d2bd5428b}
Request Duration: 6,220.93 ms
User: INTRANET\spsdshadmin
Parameters:
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Inner Exception Message:
Stack Trace: at Microsoft.PerformancePoint.Scorecards.Server.PmServer.ExecuteAnalyticReportWithParameters(RepositoryLocation analyticReportViewLocation, BIDataContainer biDataContainer)
at Microsoft.PerformancePoint.Analytics.ServerRendering.OLAPBase.OlapViewBaseControl.ExtractReportViewData()
at Microsoft.PerformancePoint.Analytics.ServerRendering.OLAPBase.OlapViewBaseControl.CreateRenderedView(StringBuilder sd)
at Microsoft.PerformancePoint.Scorecards.ServerRendering.NavigableControl.RenderControl(HtmlTextWriter writer)
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Microsoft.PerformancePoint.Scorecards.BpmException: Unable to create report. Query produced too many results.
at Microsoft.PerformancePoint.Scorecards.Server.Analytics.AnalyticQueryManager.ExecuteReport(AnalyticReportState reportState, DataSource dataSource)
at Microsoft.PerformancePoint.Scorecards.Server.PmServer.ExecuteAnalyticReportBase(RepositoryLocation analyticReportViewLocation, BIDataContainer biDataContainer, String formattingDimensionName)
at Microsoft.PerformancePoint.Scorecards.Server.PmServer.ExecuteAnalyticReportWithParameters(RepositoryLocation analyticReportViewLocation, BIDataContainer biDataContainer)
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I would like you to try the following to adjust your readerquotas.
Change the values of the parameters listed below to a larger value. We recommend that you double the value and then run the query to check whether the issue is resolved. To do this, follow these steps:
On the SharePoint 2010 server, open the Web.config file. The file is located in the following folder:
\Program Files\Microsoft Office Servers\14.0\Web Services\PpsMonitoringServer\
Locate and change the the below values from 8192 to 16384.
Open the Client.config file. The file is located in the following folder:
\Program Files\Microsoft Office Servers\14.0\WebClients\PpsMonitoringServer\
Locate and change the below values from 8192 to 16384.
After you have made the changes, restart Internet Information Services (IIS) on the SharePoint 2010 server.
<readerQuotas
maxStringContentLength="2147483647"
maxNameTableCharCount="2147483647"
maxBytesPerRead="2147483647"
maxArrayLength="2147483647"
maxDepth="2147483647"
/>
Thanks
Heidi Tr - MSFT
Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread. -
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at java.lang.Thread.run(Thread.java:595)When we select the table via SQL, everything works fine.Hi,
I'm Galit from the QE team of VIN.
All the things that you've described are correct.
It is actually an edge case where the only VM, that the manual App can be managed from its Map view, was removed from the App.
The Manual App management is as designed, and may be changed in the future.
There are 2 ways to overcome this situation:
1.You can, as you stated, create another Manual App with similar name and remain with the "Zombie App".
2. To run a specific command that will remove the Zombie App from the DB.
Please note that option no. 2 involves using an API that we do not publish.
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Router connection problems - DISH satellite receivers or too many devices?
(Sorry about that - I thought I had broken the message up.)
I'm having significant issues with my Linksys router timing out, and need help. I'll try to be as detailed as I can.
I have the following:
- Linksys WRT54G v3 wireless router I purchased off eBay 3-4 years ago. Using 128-bit WEP secirity. Even though the model says WRT54G, my Linksys setup page says I have a WRT54GL. Don't know if that's pertinent but thought I'd include the info)
- HP desktop running Vista Home Premium
- Gateway Solo laptop (circa 3Q 2002) running WinXP SP3, and also have WPC54G - Wireless-G Notebook Adapter
- Gateway M275 Notebook running Windows XP Tablet Edition w/SP3, internal wireless card
- Linksys WRE54G Wireless Range Expander, v3
My broadband internet connects to my cable modem, which then runs via ethernet to my router. I have my desktop connected to my router via (wired) ethernet cable (port 1), and the two laptops connect wirelessly. All three computers on my network run just fine and have had no connection issues until I had two (2) DISH satellite receivers installed this past Friday.
Prior to installation, I knew I would need the two receivers hooked up to my network via ethernet cable. Since one receiver was in the same room as my router, it was easy to run an ethernet cable from my router to the receiver (port 2). I had a challenge with the upstairs receiver, because I didn't have a direct connection, and wasn't sure how to wire it. So, I used my range expander by plugging in the expander into a nearby outlet, then connecting the receiver to the expander via ethernet cable.
I had some issues getting a good signal, and did some troubleshooting but made it work. Now I had five devices connected to my router: two with a wired ethernet cable and three wirelessly.
I started having connection timeouts within about 3-4 hours of satellite [receiver] installation. All of the sudden I couldn't connect to the internet on ANY device; both laptops couldn't connect wirelessly, my desktop couldn't connect, and the receivers were telling me my connection was bad. I checked modem but there were no issues. Still, I unplugged the power cable from the modem for a minute, then reconnected - still no internet. I called my cable company to have them troubleshoot the modem, but they pinged it several times & got positive results - still no internet, so I ruled the modem out.
I tried using the Windows connection troubleshooter to repair the problem, and got a DNS error message (which I don't know how to fix). I decided to unplug my router for 10-15 seconds, then plug back in - that got my internet connection going again. That lasted a couple hours & then failed. I unplugged the router again (is that a soft reset or a power cycle?), then reconnected & was able to connect to the internet. This happened a few more times over the weekend, and finally I decided the expander might be the issue (both DISH and Linksys tech support was not very helpful).
I found a way to wire my second receiver via ethernet cable (port 3), so now I had three wired devices, and two wireless devices. I thought this would fix the problem; it didn't, but at least I learned how to wire CAT5 cable. So I got that going for me... which is nice.
I plugged the ethernet cable directly from my modem to my desktop to test the timeout, but had no issues - the modem just wasn't the problem.
I was getting some IP address conflicts on my Norton Inernet Security, so I uninstalled that from my desktop, disconnected the power from the modem, disconnected the power from the router, shut down all devices, reset the IP addresses on the receivers, deleted the wireless connection from the laptops, shut down the desktop, and just left the whole mess alone for half a day. Then I reinstalled the Norton Internet Security, connected my wired devices, plugged the modem in, plugged the router in, reset my security, connected wirelessly with my laptops.
Within an hour my connection timed out.
Trying to chat with tech support wasn't feasible, as my connection kept going out. A guy at work said I shoudl ping my IP address, and let it repeat until my connection goes out. So I unplugged the router and plugged it back in to get an internet connection, the opened a cmd prompt and typed
ping 192.168.1.1 -t
I left it alone for a few hours, and when I came back, my internet connection was down, but I was still getting active pings - no problems there.
At this point I thought I had done everything except replacing my router (which I'm still tempted to do), but I called my broadband provider to see if there was anything they could do. One of the techs said I had too many devices connected to the internet, but I thought these routers were supposed to handle dozens of devices?
I finally called Linksys Tech Support and had a conversation for 90 minutes. We went through all the steps of unplugging the the modem, router & all connected devices, resetting the router, etc, etc. The only thing different he did was had me change my security from WPA to 64-bit WEP, and added passwords for DNA1 and DNS 2 (same password for each).
That was at 1:30am last night, and when I woke up to check my connection this morning, it was still connected. I have to check it again when I get home, but I'm wondering if I should just be prepared to get another router (and if so, any recommendations), or if there's something I'm still not doing that could resolve my issue - if I still have connection losses.
Also, I'm concerned about the security thing. If changing from WEP 128 or WPA to WEP 64 fixed my problem, I'm not sure I feel completely protected from intrusion - isn't that pretty much the least amount of security I can have (without forgoing it altogether)??
Finally, I've read a few threads suggesting possibly changing to static IP from DHCP; however, my satellite receiver installation documentation specifically advises against this for the receivers.
Anyway, I would very much appreciate some help.
Message Edited by CKdoubleU on 10-01-2008 08:43 AMFirst please break that long text into separate paragraphs. No one wants to read one long runon sentences
With Knowledge… Impossible means nothing.
Credentials
Computer experience: 11 years
Cisco networks experience: 8 years
Network administrator: 6 years
N.E.T. networks experience: 6 years
Linksys networks experience: 6 years
Recent additions: A+ | Networks+ | Linux+ | Security+ -
Too many connections - even after closing ResultSets and PreparedStatements
I'm getting a "Too many connections" error with MySQL when I run my Java program.
2007-08-06 15:07:26,650 main/CLIRuntime [FATAL]: Too many connections
com.mysql.jdbc.exceptions.MySQLNonTransientConnectionException: Too many connections
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:921)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2870)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:812)
at com.mysql.jdbc.MysqlIO.secureAuth411(MysqlIO.java:3269)
at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1182)
at com.mysql.jdbc.Connection.createNewIO(Connection.java:2670)I researched on this and found out that I wasn't closing the ResultSet and the PreparedStatement.
The JDBC connection is closed by a central program that handles connections (custom connection pooling).
I added the code to close all ResultSets and PreparedStatements, and re-started MySQL as per the instructions here
but still get "Too many connections" error.
A few other things come to mind, as to what I may be doing wrong, so I have a few questions:
1) A few PreparedStatements are created in one method, and they are used in a 2nd method and closed in the 2nd method
does this cause "Too many connections" error?
2) I have 2 different ResultSets, in nested while loops where the outer loop iterates over the first ResultSet and
the inner loop iterates over the second ResultSet.
I have a try-finally block that wraps the inner while loop, and I'm closing the second ResultSet and PreparedStement
in the inner while loop.
I also have a try-finally block that wraps the outer while loop, and I'm closing the first ResulSet and PreparedStatement
in the outer while loop as soon as the inner while loop completes.
So, in the above case the outer while loop's ResultSet and PreparedStatements remain open until the inner while loop completes.
Does the above cause "Too many connections" error?
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
The following is relevant sections of my code ( it is partially pseudo-code ) that shows the above 2 cases:
init( Connection jdbcConnection ){
String firstSQLStatement = "....";
PreparedStatement ps1 = jdbcConnection.prepareStatement( firstSQLStatement );
String secondSQLStatement = "....";
PreparedStatement ps2 = jdbcConnection.prepareStatement( secondSQLStatement );
String thirdSQLStatement = "....";
PreparedStatement ps3 = null;
ResultSet rsA = null;
try{
ps3 = jdbcConnection.prepareStatement( thirdSQLStatement );
rsA = ps3.executeQuery();
if( rsA.next() ){
rsA.getString( 1 );
}finally{
if( rsA != null )
rsA.close();
if( ps3 != null )
ps3.close();
//Notice, how ps1 and ps2 are created here but not used immediately, but only ps3 is
//used immediately.
//ps1 and ps2 are used in another method.
run( Connection jdbcConnection ){
ResultSet rs1 = ps1.executeQuery();
try{
while(rs1.next()){
String s = rs1.getString();
ps2.setString(1, s);
ResultSet rs2 = ps2.executeQuery();
try{
while(rs2.next()){
String s2 = rs2.getString();
}finally{
if( rs2 != null )
rs2.close();
if( ps2 != null )
ps2.close();
}catch( Exception e ){
e.printStackTrace();
}finally{
if( rs1 != null )
rs1.close();
if( ps1 != null )
ps1.close();
//Notice in the above case rs1 and ps1 are closed only after the inner
//while loop completes.
}I appreciate any help.Thanks for your reply.
I will look at the central connection pooling mechanism ( which was written by someone else) , but that is being used by many other Java programs others have written.
They are not getting this error.
An addendum to my previous note, I followed the instructions here.
http://dev.mysql.com/doc/refman/5.0/en/too-many-connections.html
There's probably something else in my code that is not closing the connection.
But I just wanted to rule out the fact that opening a PreparedStatement in one method and closing it in another is not a problem.
Or, if nested ResultSet loops don't cause the problem.
I've read in a few threads taht "Too many connections" can occur for unclosed RS and PS , and not just JDBC connections. -
An embarrassment of riches - too many tablets! Should I consolidate and get an iPad Air?
Currently I have the following tablets:
- Nexus 7 2013 wifi only
- iPad 2 32 GB wifi + cellular, but no longer in contract
- iPad 1 wifi + cellular, no longer in contract
- an extra iPad 1, also wifi + cellular, not in contract that I got for free for helping somebody with some computer stuff
That same friend who gave me the iPad 1, wants to upgrade from his iPad 4th generation to an iPad Air, and he want to give me his 4th G iPad for free. It is a 64 GB wifi only model.
The reason I never upgraded beyond the iPad 2 was because all the later models got thicker and heavier, and I thought my iPad 2 was already too heavy, which is why I got my Nexus 7. I hardly touch my iPad 2 these days. They are both within arm's reach, but the Nexus 7 is easier to hold, and allows voice input, which I often find convenient, and most of the time I reach for it. I like the voice input on my iPhone 5 too, and I feel like something is "missing" when I pick up my iPad 2. Plus it feels like it weighs a ton next to the Nexus 7.
Well, anyway I have too many tablets. And soon I'll have the iPad 4th G. So I was thinking of selling the iPad 2, the two iPad 1s and the iPad 4 and getting an iPad Air, wifi + cellular with a data sharing plan with my iPhone 5. After all, compared to the iPad 2, the iPad Air is (1) lighter, (2) has Siri, (3) has a retina display, (4) has much better specs and (5) now the cellular model is universal, so if I take a trip to the U.S. it would be easier to use there.
Yet there are things I now prefer about my Nexus 7 with Android 4.4 over iOS 7. Like it has better sharing features, the ability to send all kinds of attachments, more customization, better "hooks" into the UI from 3rd party apps, the ability to choose your own default mail apps and browsers. It seems just more flexible overall. And the Facebook app runs "smoother" than on my iPad 2.
But I like iOS 7 too.
I wonder if I would use an iPad Air any more than I do my iPad 2 since it is lighter than the recent iPads. The screen being larger might make reading magazines and news sites easier. And Siri is still better than the Android voice dictation in my opinion. Or will the weight and size actually keep driving me back to the Nexus 7?
I guess I still haven't found the right place in my life for using a tablet for anything other than casual use. I don't want to get into a religious argument about whether tablets are production devices versus consumption devices, but basically I am in the camp that does not see them as true productivity devices. My iMac is for that.
Conundrums, conundrums. I do have too many "devices" right now though. Within an arm's reach I can count 12 computers, tablets and phones all on wifi! Who needs that much stuff?!
And if I do get the iPad Air, do I need 128 GB? The way they sell here in Japan, you don't put any cash down at all, and basically get an interest-free loan for 2 years. So "for just a few hundred yen more a month" you can go from the 32 GB model to the 64 GB model. And then "for just a few hundred yen more a month" you can go to the 128 GB model. It seems a waste not to get the 128 GB model. But in my current iPad 2 I only use a little more than half the current 32 GB.
Decisions, decisions. Any thoughts?
dougThe weight is somewhat of an issue for me. I find the iPad 2 irritatingly heavy whenever I pick it up, and the iPad 4th generation is heavier even than my iPad 2.
But for the amount I use it I could get used to that. That option is certainly the least headache, contract-wise, and I would avoid the ever-present possibility of dealing with AppleCare if something is "not perfect" (which it never is).
I guess the only "practical" reason would be that I would be getting rid of all my iPads with a cellular option. So if I did make a trip to the U.S. in the spring, it would be harder to use the iPad 4. Here, in Japan, of course I could use the free tethering option on my iPhone 5.
So I guess it is just the cellular option I'm giving up that is in the back of my mind.
doug -
I am posting this in the '09 topic, but my question really dates back to Garageband '08. I rely on Garageband often, and I'm a big fan of it. However, it contains a serious problem which I need fixed.
I create a new project, drop a single iTunes song into it, and begin to edit. Almost every time, randomly while playing the song the "Part of the project was not played. This project has too many real instrument tracks to be played in real-time" warning message appears. I only have 1 track! Worse still, my audio driver lets out a terrible "HONK" which startles me and blasts through the entire house. After that, My sound output faintly exists until I open up Audio MIDI Setup and change a random setting on my output.
I am quite tired of this predicament. Is there anyway to fix this (without money)?I was experiencing a similar problem, and I just got off the phone with applecare and went through all their steps.
I'll try my best to recount them here. But before I do, let it be said that the tech fellow, once he heard what I was doing, exclaimed that my core problem was that I needed to be creating new projects, and not re-using the same project (ex. "My Song 2") over and over.
What I've been doing is backing up a pile of mini-discs that have live concerts on them. A couple of hours of audio each one, and I've been recording them into Garageband. After I divide the concert up into songs and export them to itunes, I've been deleting the track in Garageband and then importing the next concert (repeat x 10 concerts).
About 7-8 concerts in I started getting that popping sound when the sound would cut out (made the sound of depressing the safety-seal bubble on the metal lid of a jam jar). At first, quitting Garageband and opening it again would work. On the 10th concert, when the sound cut out the sound for the whole computer would stop working (itunes, volume buttons on my keyboard, everything).
So the tech fellow said the lesson is this: create new projects. Don't be shy about it. No need to re-use and recycle in cyberspace.
Now - my applecare steps:
- First we went: Macintosh HD, Library, then dragged "Caches" to the trash
- then went to Finder, Go, Utilities, Disk Utility, Macintosh HD, Repair Disk Permissions (that took some time)
- then restarted the computer
All seems to be well now.
Good luck -
Too many real instruments for a new project?
I keep getting the notification which says "Part of the project was not played - This project has too many real instrument tracks to be played in real-time".
BUT the problem is that this occurs even when I open a new garageband file (i.e. no tracks!) and I'm only 3 seconds into recording the first track! So garageband is basically not working for me. I've tried uninstalling and reinstalling it to no avail. Just a few months back I was still able to use it comfortably to do edit many different tracks together so I really don't know what the problem is. I don't really know if its a problem with the processor as I barely use the memory on my macbook pro and even when recording CPU usage doesn't go above 20% so I'm really at a loss. Please help!Oh apple support asked me to try that out too but it did not work.. In fact for some of the suggestions they gave (eg using a different user, or even locking the track) it only managed to extend the period of recording to about 10 seconds before the problem resurfaced and after that it was back to the same 3 second problem.
But that is an important clue, Josiah. If you cannot even record properly from a different user account with basic settings, we know that the settings in your user account cannot be causing this - this looks like system wide trouble.
You could run a hardware check over night, to check your hardware:
Intel-based Macs: Using Apple Hardware Test
and if the hardware check does not show any problems, I'd reinstall Mountain Lion.
See Linc Davis's post on how to reinstall: Re: Garageband doesn't open in Mac Mini mid 2011
Regards
Léonie -
My ipod touch 4g keeps telling me that I have too many photos and videos and will not let me download apps. I have deleted all the photos and videos and some of my old apps but it keeps telling me the same message. I have tried to sync it with the pc and I have turned it on and off and I have reset it but nothing has worked. Please help! Thank you
Go to Setting>General>About. oow much avaialbe storage do you have?
Have you tried resetting the iPOd?
Reset iPod touch: Press and hold the On/Off Sleep/Wake button and the Home
button at the same time for at least ten seconds, until the Apple logo appears. -
I'm having a huge issue with itunes locating my missing files..and it's too many for me to locate 1 by 1..It says I'm missing over 3,000 songs and They are all in my music folder..What can I do to fix this issue? I've looked at all the tutorials on youtube and none of it works. I recently got a new computer and I Back-Up all my music and itunes playlist and I import it on my new computer with the new itunes and I go to play a few songs, it says I'm missing them I locate a few but it's still like 3,000 missing and again they are all on the computer and in one folder..Please Help !
I did that and nothing changed half my songs still have examination marks beside them
I also just tried dragging my folder of music int he playlist and it duplicated all of my songs? My playlist was at 5k now it's at 10k becuz of 3 duplicates of songs. Is there a way to delete multiple duplicate files? -
so I went to sync my ipod, and the computer says i have too many GB of space being used on my ipod for "other". I checked yesterday and there wasn't nearly that much space being used. What happened, and can i fix it? Thanks!
What is the Other on my iPhone and How to Remove It
An "other" larger than about 1 1/2 usually indicates that the "other" includes corrupted files.
First try:
"First you go settings/general/usage/music/then left swipe over music and press delete and you would think it deletes your music but it doesn't instead it deletes your other but make sure your ipod is connected to a computer while doing this"
as recommended by:
How do I get rid of "other" storage: Apple Support Communities
Next, usually restoring from backup eliminated the corrupted files. However, sometimes restoring to factory settings/new iPod is required.
To restore from backup see:
iOS: How to back up
To restore to factory settings/new iPod see:
iTunes: Restoring iOS software -
I have followed the steps provided by apple to restore an iPod touch. It is disabled due to having the wrong password entered too many times. When I get part way through the restore process on my computer it pops up a box saying that it can't restore until I enter the passcode into the iPod. I have tried this same process over 5 times now and keep gutting the same results. It is my kids iPod and he has only had it since September. Someone please help me before I throw the thing through the window and my kid strangles me!!! Thanks!
Place the iOS device in Recovery Mode and then connect to your computer and restore via iTunes. The iPod will be erased.
iOS: Wrong passcode results in red disabled screen
If recovery mode does not work try DFU mode.
How to put iPod touch / iPhone into DFU mode « Karthik's scribblings
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