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Error starting Apache Derby java.lang.SecurityException: Sealing violation: org.apache.derby.impl.services.timer package is sealed

I am using Ubuntu 14.04 and installed Derby 10.12.1.1. I followed the installation instructions from the Apache website.

My CLASSPATH was set as

 /usr/local/hadoop/lib/*:/usr/local/hive/lib/*:/usr/local/derby/lib/derbynet.jar:/usr/local/derby/lib/derbytools.jar

When I try to run a derby

 hduser@HadoopMaster:/usr/local/derby/data$ /usr/local/derby/bin/startNetworkServer

I got

 Tue Nov 10 23:50:18 AEDT 2015 : Security manager installed using the Basic server security policy. java.lang.SecurityException: sealing violation: package org.apache.derby.impl.services.timer is sealed at java.net.URLClassLoader.getAndVerifyPackage(URLClassLoader.java:399) at java.net.URLClassLoader.definePackageInternal(URLClassLoader.java:419) at java.net.URLClassLoader.defineClass(URLClassLoader.java:451) at java.net.URLClassLoader.access$100(URLClassLoader.java:73) at java.net.URLClassLoader$1.run(URLClassLoader.java:368) at java.net.URLClassLoader$1.run(URLClassLoader.java:362) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:361) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:760) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) at java.net.URLClassLoader.defineClass(URLClassLoader.java:467) at java.net.URLClassLoader.access$100(URLClassLoader.java:73) at java.net.URLClassLoader$1.run(URLClassLoader.java:368) at java.net.URLClassLoader$1.run(URLClassLoader.java:362) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:361) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:264) at org.apache.derby.impl.services.monitor.BaseMonitor.getImplementations(Unknown Source) at org.apache.derby.impl.services.monitor.BaseMonitor.getDefaultImplementations(Unknown Source) at org.apache.derby.impl.services.monitor.BaseMonitor.runWithState(Unknown Source) at org.apache.derby.impl.services.monitor.FileMonitor.<init>(Unknown Source) at org.apache.derby.iapi.services.monitor.Monitor.startMonitor(Unknown Source) at org.apache.derby.iapi.jdbc.JDBCBoot$1.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at org.apache.derby.iapi.jdbc.JDBCBoot.boot(Unknown Source) at org.apache.derby.iapi.jdbc.JDBCBoot.boot(Unknown Source) at org.apache.derby.jdbc.EmbeddedDriver.boot(Unknown Source) at org.apache.derby.jdbc.EmbeddedDriver.<clinit>(Unknown Source) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:264) at org.apache.derby.impl.drda.NetworkServerControlImpl.startNetworkServer(Unknown Source) at org.apache.derby.impl.drda.NetworkServerControlImpl.blockingStart(Unknown Source) at org.apache.derby.impl.drda.NetworkServerControlImpl.executeWork(Unknown Source) at org.apache.derby.drda.NetworkServerControl.main(Unknown Source) Exception in thread "main" java.lang.ExceptionInInitializerError at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:264) at org.apache.derby.impl.drda.NetworkServerControlImpl.startNetworkServer(Unknown Source) at org.apache.derby.impl.drda.NetworkServerControlImpl.blockingStart(Unknown Source) at org.apache.derby.impl.drda.NetworkServerControlImpl.executeWork(Unknown Source) at org.apache.derby.drda.NetworkServerControl.main(Unknown Source) Caused by: java.lang.SecurityException: sealing violation: package org.apache.derby.impl.services.timer is sealed at java.net.URLClassLoader.getAndVerifyPackage(URLClassLoader.java:399) at java.net.URLClassLoader.definePackageInternal(URLClassLoader.java:419) at java.net.URLClassLoader.defineClass(URLClassLoader.java:451) at java.net.URLClassLoader.access$100(URLClassLoader.java:73) at java.net.URLClassLoader$1.run(URLClassLoader.java:368) at java.net.URLClassLoader$1.run(URLClassLoader.java:362) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:361) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:760) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) at java.net.URLClassLoader.defineClass(URLClassLoader.java:467) at java.net.URLClassLoader.access$100(URLClassLoader.java:73) at java.net.URLClassLoader$1.run(URLClassLoader.java:368) at java.net.URLClassLoader$1.run(URLClassLoader.java:362) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:361) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:264) at org.apache.derby.impl.services.monitor.BaseMonitor.getImplementations(Unknown Source) at org.apache.derby.impl.services.monitor.BaseMonitor.getDefaultImplementations(Unknown Source) at org.apache.derby.impl.services.monitor.BaseMonitor.runWithState(Unknown Source) at org.apache.derby.impl.services.monitor.FileMonitor.<init>(Unknown Source) at org.apache.derby.iapi.services.monitor.Monitor.startMonitor(Unknown Source) at org.apache.derby.iapi.jdbc.JDBCBoot$1.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at org.apache.derby.iapi.jdbc.JDBCBoot.boot(Unknown Source) at org.apache.derby.iapi.jdbc.JDBCBoot.boot(Unknown Source) at org.apache.derby.jdbc.EmbeddedDriver.boot(Unknown Source) at org.apache.derby.jdbc.EmbeddedDriver.<clinit>(Unknown Source) ... 6 more
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