java - JPA/EclipseLink Error in Creating Tables -

i trying create table using eclipselink. java class being used :-

import java.util.date; import javax.persistence.entity; import javax.persistence.generatedvalue; import javax.persistence.generationtype; import javax.persistence.temporal; import javax.persistence.temporaltype; import javax.persistence.id;  @entity public class submissions {   @id  @generatedvalue(strategy = generationtype.identity)  private long id;  private string xid;  private string y;  @temporal(temporaltype.date)  private date udate;  private string level;  private string state;   public submissions() {  }   //all relevant getter , setter functions } 

the relevant persistence xml in question follows:-

<persistence-unit name="submissionids">     <provider>org.eclipse.persistence.jpa.persistenceprovider</provider>     <class>com.obp.selenium.dataobjects.originationsubmissions</class>     <properties>          <property name="javax.persistence.jdbc.driver" value="oracle.jdbc.oracledriver" />         <property name="javax.persistence.jdbc.url"             value="jdbc:oracle:thin:@localhost:1521:orcl" />         <property name="javax.persistence.jdbc.user" value="------" />         <property name="javax.persistence.jdbc.password" value="------" />          <!-- eclipselink should create database schema automatically -->         <property name="eclipselink.ddl-generation" value="create-tables" />         <property name="eclipselink.ddl-generation.output-mode"             value="database" />         <!-- <property name="eclipselink.canonicalmodel.subpackage"             value="originationsubmissions" /> -->     </properties> </persistence-unit> 

we use standard method implementing entitymanagerfactory :-

entitymanagerfactory factory = persistence.createentitymanagerfactory("submissionids");     entitymanager em = factory.createentitymanager();     em.gettransaction().begin();     em.gettransaction().commit();     em.close(); 

however keep getting following errors :-

el warning]: 2017-04-07 14:04:53.768--serversession(1650327539)--exception [eclipselink-4002] (eclipse persistence services - 2.6.3.v20160428-59c81c5): org.eclipse.persistence.exceptions.databaseexception internal exception: java.sql.sqlsyntaxerrorexception: ora-00904: : invalid identifier

error code: 904 call: create table submissions (id number(19) not null, xid varchar2(255) null, y varchar2(255) null, level varchar2(255) null, state varchar2(255) null, udate date null, primary key (id)) query: datamodifyquery(sql="create table submissions (id number(19) not null, xid varchar2(255) null, y varchar2(255) null, level varchar2(255) null, state varchar2(255) null, udate date null, primary key (id))")

avtually eclipse reported bug rises when there reserved word usage can fine here :
https://bugs.eclipse.org/bugs/show_bug.cgi?id=260637.

the problem comes using reserved word dont know dbms, if mysql attributs xid , level reserved word. can find mysql reserved word here : https://dev.mysql.com/doc/refman/5.7/en/keywords.html.

you can se sql code used build tables there column name update of type date

udate date null

so opinion, need watch attribut name on udate