java.lang.SecurityException: sealing violation: package oracle.jdbc.driver is sealed

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java.lang.SecurityException: sealing violation: package oracle.jdbc.driver is sealed
at java.net.URLClassLoader.defineClass(URLClassLoader.java:234)
at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at org.identityconnectors.framework.impl.api.local.BundleClassLoader.loadClass(BundleClassLoader.java:62)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:169)
at org.identityconnectors.databasetable.DatabaseTableConfiguration.validate(DatabaseTableConfiguration.java:958)
at org.identityconnectors.databasetable.DatabaseTableConnector.getConn(DatabaseTableConnector.java:166)
at org.identityconnectors.databasetable.DatabaseTableConnector.closeConnection(DatabaseTableConnector.java:1836)
at org.identityconnectors.databasetable.DatabaseTableConnector.checkAlive(DatabaseTableConnector.java:150)
at org.identityconnectors.framework.impl.api.local.ConnectorPoolManager$ConnectorPoolHandler.testObject(ConnectorPoolManager.java:105)
at org.identityconnectors.framework.impl.api.local.ConnectorPoolManager$ConnectorPoolHandler.testObject(ConnectorPoolManager.java:74)
at org.identityconnectors.framework.impl.api.local.ObjectPool.borrowObject(ObjectPool.java:229)
at org.identityconnectors.framework.impl.api.local.operations.ConnectorAPIOperationRunnerProxy.invoke(ConnectorAPIOperationRunnerProxy.java:83)
at undefined.$Proxy548.search(Unknown Source)
at sun.reflect.GeneratedMethodAccessor3844.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.identityconnectors.framework.impl.api.local.operations.ThreadClassLoaderManagerProxy.invoke(ThreadClassLoaderManagerProxy.java:107)
at undefined.$Proxy548.search(Unknown Source)
at sun.reflect.GeneratedMethodAccessor3844.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.identityconnectors.framework.impl.api.BufferedResultsProxy$BufferedResultsHandler.run(BufferedResultsProxy.java:162)

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