Hi, Im trying to understand why OpenJPA logging does not work properly in Karaf and I found out that if OpenJPA is configured to use log4j as logging engine, it fails for NoClassDefFoundError: org/apache/log4j/LogManager
12:01:11,054|ERROR|org.apache.karaf.shell.console.jline.Console ==> Exception caught while executing command org.apache.karaf.shell.console.MultiException: Error starting bundles: Unable to start bundle 66: Activator start error in bundle org.apache.aries.jpa.container [66]. at org.apache.karaf.shell.console.MultiException.throwIf(MultiException.java:91) at org.apache.karaf.shell.osgi.StartBundle.doExecute(StartBundle.java:43)[24:org.apache.karaf.shell.osgi:2.3.3] at org.apache.karaf.shell.osgi.BundlesCommand.doExecute(BundlesCommand.java:37)[24:org.apache.karaf.shell.osgi:2.3.3] at org.apache.karaf.shell.console.OsgiCommandSupport.execute(OsgiCommandSupport.java:38)[14:org.apache.karaf.shell.console:2.3.3] at org.apache.felix.gogo.commands.basic.AbstractCommand.execute(AbstractCommand.java:35)[14:org.apache.karaf.shell.console:2.3.3] at org.apache.felix.gogo.runtime.CommandProxy.execute(CommandProxy.java:78)[14:org.apache.karaf.shell.console:2.3.3] at org.apache.felix.gogo.runtime.Closure.executeCmd(Closure.java:474)[14:org.apache.karaf.shell.console:2.3.3] at org.apache.felix.gogo.runtime.Closure.executeStatement(Closure.java:400)[14:org.apache.karaf.shell.console:2.3.3] at org.apache.felix.gogo.runtime.Pipe.run(Pipe.java:108)[14:org.apache.karaf.shell.console:2.3.3] at org.apache.felix.gogo.runtime.Closure.execute(Closure.java:183)[14:org.apache.karaf.shell.console:2.3.3] at org.apache.felix.gogo.runtime.Closure.execute(Closure.java:120)[14:org.apache.karaf.shell.console:2.3.3] at org.apache.felix.gogo.runtime.CommandSessionImpl.execute(CommandSessionImpl.java:89)[14:org.apache.karaf.shell.console:2.3.3] at org.apache.karaf.shell.console.jline.Console.run(Console.java:173)[14:org.apache.karaf.shell.console:2.3.3] at java.lang.Thread.run(Thread.java:724)[:1.7.0_40] Caused by: java.lang.Exception: Unable to start bundle 66: Activator start error in bundle org.apache.aries.jpa.container [66]. at org.apache.karaf.shell.osgi.StartBundle.doExecute(StartBundle.java:39)[24:org.apache.karaf.shell.osgi:2.3.3] ... 12 more Caused by: org.osgi.framework.BundleException: Activator start error in bundle org.apache.aries.jpa.container [66]. at org.apache.felix.framework.Felix.activateBundle(Felix.java:2027)[org.apache.felix.framework-4.0.3.jar:] at org.apache.felix.framework.Felix.startBundle(Felix.java:1895)[org.apache.felix.framework-4.0.3.jar:] at org.apache.felix.framework.BundleImpl.start(BundleImpl.java:944)[org.apache.felix.framework-4.0.3.jar:] at org.apache.felix.framework.BundleImpl.start(BundleImpl.java:931)[org.apache.felix.framework-4.0.3.jar:] at org.apache.karaf.shell.osgi.StartBundle.doExecute(StartBundle.java:37)[24:org.apache.karaf.shell.osgi:2.3.3] ... 12 more Caused by: java.lang.NoClassDefFoundError: org/apache/log4j/LogManager at org.apache.openjpa.lib.log.Log4JLogFactory.newLogAdapter(Log4JLogFactory.java:33) at org.apache.openjpa.lib.log.LogFactoryAdapter.getLog(LogFactoryAdapter.java:40) at org.apache.openjpa.lib.conf.ConfigurationImpl.getLog(ConfigurationImpl.java:230) Log4j packages are properly exposed by Karaf: karaf@jpa> exports | grep org.apache.log4j 4 org.apache.log4j; version=1.2.15 4 org.apache.log4j.spi; version=1.2.15 4 org.apache.log4j.xml; version=1.2.15 And it also like that OpenJPA (bundle 91 in my example) imports them: karaf@jpa> imports 91 | grep -i log OPS4J Pax Logging - API (4): org.apache.commons.logging; version=1.1.1 OPS4J Pax Logging - API (4): org.apache.commons.logging; version=1.0.4 OPS4J Pax Logging - API (4): org.apache.log4j; version=1.2.15 OPS4J Pax Logging - API (4): org.slf4j; version=1.7.1 OPS4J Pax Logging - API (4): org.slf4j; version=1.6.6 OPS4J Pax Logging - API (4): org.slf4j; version=1.5.11 OPS4J Pax Logging - API (4): org.slf4j; version=1.4.3 Any hint? -- View this message in context: http://karaf.922171.n3.nabble.com/OpenJPA-logging-Vs-Karaf-tp4029844.html Sent from the Karaf - User mailing list archive at Nabble.com.