install error caused in my own host

Question

hi,

System environment：

linux :  CentOS Linux 7.5  , 2 cpu core,  4G memory

mysql: Ver 14.14 Distrib 5.7.24, for Linux (x86_64) using  EditLine wrapper

confluence： 6.12.1

error information:

1. in the step of setup my own database,  a few minutes later, an error occurred.

2. refresh  the page, another error occurred.

Type Exception Report

Message Unable to register MBean [com.atlassian.confluence.jmx.TaskQueueWrapper@725607a4] with key 'Confluence:name=MailTaskQueue'; nested exception is javax.management.InstanceAlreadyExistsException: Confluence:name=MailTaskQueue

Description The server encountered an unexpected condition that prevented it from fulfilling the request.

Exception

org.springframework.jmx.export.UnableToRegisterMBeanException: Unable to register MBean [com.atlassian.confluence.jmx.TaskQueueWrapper@725607a4] with key 'Confluence:name=MailTaskQueue'; nested exception is javax.management.InstanceAlreadyExistsException: Confluence:name=MailTaskQueue
	org.springframework.jmx.export.MBeanExporter.registerBeanNameOrInstance(MBeanExporter.java:625)

I have tried many times， anybody have the same phenomenon? and how to fix it?  thank you very much！

Nic Brough -Adaptavist- · Answer

I'm afraid "it don't work" is useless as a problem description.  For all we know from that, there could be a large penguin chewing your network cables.  What is the actual error?

lali bird · Answer

hi @Nic Brough -Adaptavist-   I have try the resolution  of  "place jmxContext.xml in your <confluence-install>/confluence/WEB-INF/classes folder"   at first, remove all data  and drop the database ,  then  reinstall the confluence,  download the jmxContext,xml and do it as the follows, but it don't work.

Nic Brough -Adaptavist- · Answer

Start by trying https://confluence.atlassian.com/confkb/unable-to-start-confluence-due-to-jmx-182158269.html