could not execute statementを解決したい

Apachetikaを用いてpdfファイル内のテキストを抽出しSQLへの登録を行いたいと考えておりますがエラーに悩まされております。
以下コード：

Java
1protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
2　　　　　String _token = (String)request.getParameter("_token");
3        if(_token != null && _token.equals(request.getSession().getId())) {
4            EntityManager re = DBUtil.createEntityManager();
5
6            Report r = new Report();
7
8            r.setName(request.getParameter("name"));
9            r.setAuthor(request.getParameter("author"));
10            r.setYear(request.getParameter("year"));
11            r.setMagazine(request.getParameter("magazine"));
12            r.setDepartment(Integer.parseInt(request.getParameter("department")));
13
14            Part part = request.getPart("avatar");
15            String name = this.getFileName(part);
16            r.setData(name);
17
18            Timestamp currentTime = new Timestamp(System.currentTimeMillis());
19            r.setCreated_at(currentTime);
20            r.setUpdated_at(currentTime);
21            r.setDelete_flag(0);
22
23            List<String> errors = ReportValidator.validate(r, true);
24            if(errors.size() > 0) {
25                re.close();
26
27                request.setAttribute("_token", request.getSession().getId());
28                request.setAttribute("report", r);
29                request.setAttribute("errors", errors);
30
31                RequestDispatcher rd = request.getRequestDispatcher("/WEB-INF/views/reports/new.jsp");
32                rd.forward(request, response);
33            } else {
34                re.getTransaction().begin();
35                name = r.getId() + "_" + name;
36                part.write("/Users/---/new/" + name);
37                try {
38                    AutoDetectParser parser = new AutoDetectParser();
39                    Metadata metaData = new Metadata();
40                    ParseContext context = new ParseContext();
41                    BodyContentHandler handler = new BodyContentHandler();
42                    parser.parse(new FileInputStream(new File("/Users/---/new/" + name)), handler, metaData, context);
43                    String ret = handler.toString();
44                    r.setSearchdata(ret);
45                } catch (SAXException | TikaException e) {
46                    // TODO 自動生成された catch ブロック
47                    e.printStackTrace();
48                }
49                r.setData(name);
50                re.persist(r);
51                re.flush();
52                re.getTransaction().commit();
53                request.getSession().setAttribute("flush", "登録が完了しました。");
54                re.close();
55                response.sendRedirect(request.getContextPath() + "/reports/index");
56            }
57        }
58    }
59    private String getFileName(Part part) {
60        String name = null;
61        for (String dispotion : part.getHeader("Content-Disposition").split(";")) {
62            if (dispotion.trim().startsWith("filename")) {
63                name = dispotion.substring(dispotion.indexOf("=") + 1).replace("\"", "").trim();
64                name = name.substring(name.lastIndexOf("\") + 1);
65                break;
66            }
67        }
68        return name;
69    }
70}

Java
1@Entity
2public class Report {
3　　　　： 
4     @Lob
5    @Column(name = "searchdata", nullable = false ,length = 1000000000)
6    private String searchdata;
7  　　 ：    
8    }
9}
10

JSP
1<label for="searchdata"></label>
2<br /><br />
3<input type="hidden" name="search" value="${report.searchdata}" />

HTTPステータス 500 - org.hibernate.exception.DataException: could not execute statement
type 例外レポート

メッセージ org.hibernate.exception.DataException: could not execute statement

説明 The server encountered an internal error that prevented it from fulfilling this request.

例外

javax.persistence.PersistenceException: org.hibernate.exception.DataException: could not execute statement
org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:149)
org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:157)
org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:164)
org.hibernate.internal.SessionImpl.firePersist(SessionImpl.java:789)
org.hibernate.internal.SessionImpl.persist(SessionImpl.java:767)
controllers.reports.ReportsCreateServlet.doPost(ReportsCreateServlet.java:99)
javax.servlet.http.HttpServlet.service(HttpServlet.java:648)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
filters.EncodingFilter.doFilter(EncodingFilter.java:38)
原因
org.hibernate.exception.DataException: could not execute statement
org.hibernate.exception.internal.SQLExceptionTypeDelegate.convert(SQLExceptionTypeDelegate.java:52)
org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:42)
org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:111)
org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:97)
org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.executeUpdate(ResultSetReturnImpl.java:178)
org.hibernate.dialect.identity.GetGeneratedKeysDelegate.executeAndExtract(GetGeneratedKeysDelegate.java:57)
org.hibernate.id.insert.AbstractReturningDelegate.performInsert(AbstractReturningDelegate.java:42)
org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2919)
org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3490)
org.hibernate.action.internal.EntityIdentityInsertAction.execute(EntityIdentityInsertAction.java:81)
org.hibernate.engine.spi.ActionQueue.execute(ActionQueue.java:636)
org.hibernate.engine.spi.ActionQueue.addResolvedEntityInsertAction(ActionQueue.java:281)
org.hibernate.engine.spi.ActionQueue.addInsertAction(ActionQueue.java:262)
org.hibernate.engine.spi.ActionQueue.addAction(ActionQueue.java:316)
org.hibernate.event.internal.AbstractSaveEventListener.addInsertAction(AbstractSaveEventListener.java:318)
org.hibernate.event.internal.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:275)
org.hibernate.event.internal.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:182)
org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:113)
org.hibernate.jpa.event.internal.core.JpaPersistEventListener.saveWithGeneratedId(JpaPersistEventListener.java:67)
org.hibernate.event.internal.DefaultPersistEventListener.entityIsTransient(DefaultPersistEventListener.java:189)
org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:132)
org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:58)
org.hibernate.internal.SessionImpl.firePersist(SessionImpl.java:782)
org.hibernate.internal.SessionImpl.persist(SessionImpl.java:767)
controllers.reports.ReportsCreateServlet.doPost(ReportsCreateServlet.java:99)
javax.servlet.http.HttpServlet.service(HttpServlet.java:648)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
filters.EncodingFilter.doFilter(EncodingFilter.java:38)
よろしくお願い致します。