java.sql.SQLException: Protocol violation
   at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:112)
   at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:146)
   at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:208)
   at oracle.jdbc.driver.T4C8Oall.receive(T4C8Oall.java:764)
   at oracle.jdbc.driver.T4CStatement.doOall8(T4CStatement.java:207)
   at oracle.jdbc.driver.T4CStatement.executeForDescribe(T4CStatement.java:790)
   at oracle.jdbc.driver.OracleStatement.executeMaybeDescribe(OracleStatement.java:1037)
   at oracle.jdbc.driver.T4CStatement.executeMaybeDescribe(T4CStatement.java:830)
   at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1132)
   at oracle.jdbc.driver.OracleStatement.executeQuery(OracleStatement.java:1272)
   at org.netbeans.modules.dbschema.jdbcimpl.SchemaElementImpl.getOracleRecycleBinTables(SchemaElementImpl.java:736)
   at org.netbeans.modules.dbschema.jdbcimpl.SchemaElementImpl.initTables(SchemaElementImpl.java:242)
   at org.netbeans.modules.dbschema.jdbcimpl.SchemaElementImpl.initTables(SchemaElementImpl.java:216)
   at org.netbeans.modules.hibernate.wizards.support.DBSchemaManager$3.run(DBSchemaManager.java:203)
   at org.netbeans.modules.j2ee.core.api.support.progress.ProgressSupport$ActionInvoker.invokeNextActionsOfSameKind(ProgressSupport.java:270)
   at org.netbeans.modules.j2ee.core.api.support.progress.ProgressSupport$ActionInvoker.access$100(ProgressSupport.java:118)
   at org.netbeans.modules.j2ee.core.api.support.progress.ProgressSupport$ActionInvoker$1.run(ProgressSupport.java:159)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1411)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1991)