[
https://issues.apache.org/jira/browse/AMQ-7223?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Robbie Gemmell closed AMQ-7223.
-------------------------------
Resolution: Invalid
Fix Version/s: (was: 5.15.9)
The broker requires Java 8. The issue is that you are trying to start it on
Java 7.
The UnsupportedClassVersionError being thrown by the ClassLoader indicates the
encountered class bytecode version 52 (used by Java 8) is not supported. Thats
is because you are using Java 7 which only supports up to bytecode version 51
(used by Java 7).
> Unable to start apache-activemq-5.15.9
> --------------------------------------
>
> Key: AMQ-7223
> URL: https://issues.apache.org/jira/browse/AMQ-7223
> Project: ActiveMQ
> Issue Type: Bug
> Components: Broker
> Affects Versions: 5.15.9
> Environment: Test Environment
> Reporter: Abhijit Vikash
> Priority: Major
>
> Hi ActiveMQ,
>
> I downloaded and extracted
> [apache-activemq-5.15.9-bin.tar.gz|http://www.apache.org/dyn/closer.cgi?filename=/activemq/5.15.9/apache-activemq-5.15.9-bin.tar.gz&action=download]
> from [https://activemq.apache.org/components/classic/download/]
> on RHEL 6.5 Linux (8cores x 16GB)
> -bash-4.1$ java -version
> java version "1.7.0_65"
> Java(TM) SE Runtime Environment (build 1.7.0_65-b17)
> Java HotSpot(TM) 64-Bit Server VM (build 24.65-b04, mixed mode)
>
> But, unable to start the AMQ. Can you please help. Please see the console
> output below for
> -bash-4.1$ ./activemq console
> -bash-4.1$ ./activemq start
>
> -bash-4.1$ ./activemq console
> INFO: Loading '/home/mediaworks/apache-activemq-5.15.9//bin/env'
> INFO: Using java '/usr/java/default/bin/java'
> INFO: Starting in foreground, this is just for debugging purposes (stop
> process by pressing CTRL+C)
> INFO: Creating pidfile
> /home/mediaworks/apache-activemq-5.15.9//data/activemq.pid
> Exception in thread "main" java.lang.UnsupportedClassVersionError:
> org/apache/activemq/console/Main : Unsupported major.minor version 52.0
> at java.lang.ClassLoader.defineClass1(Native Method)
> at java.lang.ClassLoader.defineClass(ClassLoader.java:800)
> at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
> at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
> at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
> at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
> at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
> at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:482)
>
>
>
> -bash-4.1$ ./activemq start
> INFO: Loading
> '/home/mediaworks/apache-activemq-5.15.9{color:#d04437}*//*{color}bin/env'
> INFO: Using java '/usr/java/default/bin/java'
> INFO: Starting - inspect logfiles specified in logging.properties and
> log4j.properties to get details
> INFO: pidfile created :
> '/home/mediaworks/apache-activemq-5.15.9{color:#d04437}*//*{color}data/activemq.pid'
> (pid '22271')
>
>
>
>
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