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https://issues.apache.org/jira/browse/JCS-196?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Thomas Vandahl closed JCS-196.
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Close after release
> Getting an issue with commons-jcs-core 2.0 version, which is
> InstanceAlreadyExistsException
> -------------------------------------------------------------------------------------------
>
> Key: JCS-196
> URL: https://issues.apache.org/jira/browse/JCS-196
> Project: Commons JCS
> Issue Type: Bug
> Components: Composite Cache
> Affects Versions: jcs-2.0
> Reporter: naga kumar
> Assignee: Thomas Vandahl
> Priority: Blocker
> Fix For: jcs-3.0
>
>
> Hi,
> I have recently tried using JCS 2.0 version. my intention is to improve the
> performance of my application since my application communicates data base
> frequently. So, i have implemented a single service on cache, and when i run
> this service as a standalone(not through web module, but using main method in
> java), i am able to prove that the call is going to cache for sure for second
> time since the first call must go to data base. And, finally my issue is,
> when i deploy the same application, which has cache implementation, and run
> the web module, i am getting below exception. Can you please solve it as soon
> as possible since i am dead line. and if possible, can you share a best
> cache.ccf file for best config.
>
> Exception details
> --------------------------------------
> 2019-01-04 16:47:49.426 WARN com.XXXX.XXX.service.agent.XXManagementAgent -
> Found potential problem class
> org.apache.commons.jcs.utils.servlet.JCSServletContextListener: implements
> ServletContextListener
> 2019-01-04 16:47:49.426 WARN com.XXXX.XXX.service.agent.XXManagementAgent -
> Found potential problem class
> org.apache.tomcat.websocket.server.WsContextListener: implements
> ServletContextListener
> 2019-01-04 16:47:49.426 WARN com.XXXX.XXX.service.agent.XXManagementAgent -
> Found potential problem class
> org.apache.commons.logging.impl.ServletContextCleaner: implements
> ServletContextListener
> 2019-01-04 16:47:49.426 WARN com.XXXX.XXX.service.agent.XXManagementAgent -
> Found potential problem class
> com.XXXX.otag.service.agent.ServiceBootstrapListener: implements
> ServletContextListener
>
> org.apache.commons.jcs.engine.control.CompositeCacheManager - Could not
> register JMX bean.
> javax.management.InstanceAlreadyExistsException:
> org.apache.commons.jcs:type=JCSAdminBean
> at com.sun.jmx.mbeanserver.Repository.addMBean(Repository.java:437)
> at
> com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerWithRepository(DefaultMBeanServerInterceptor.java:1898)
> at
> com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerDynamicMBean(DefaultMBeanServerInterceptor.java:966)
> at
> com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerObject(DefaultMBeanServerInterceptor.java:900)
> at
> com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerMBean(DefaultMBeanServerInterceptor.java:324)
> at
> com.sun.jmx.mbeanserver.JmxMBeanServer.registerMBean(JmxMBeanServer.java:522)
> at
> org.apache.commons.jcs.engine.control.CompositeCacheManager.initialize(CompositeCacheManager.java:271)
> at
> org.apache.commons.jcs.engine.control.CompositeCacheManager.getInstance(CompositeCacheManager.java:185)
> at
> org.apache.commons.jcs.engine.control.CompositeCacheManager.getInstance(CompositeCacheManager.java:161)
> at org.apache.commons.jcs.JCS.getCacheManager(JCS.java:156)
> at org.apache.commons.jcs.JCS.getInstance(JCS.java:174)
>
> ---------------------------------------------------------------
> Note: If you share any solution, please give it us with a sample code.
>
> thanks,
> Naga.
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