@Entity
@Table(name ="Language", schema="WebMuseum")
public class Test implements Serializable {

   @Id
   @Column(name="txn_details_id",nullable = false,columnDefinition = "varchar(50)")
   private String name;
   @Column
   private byte[] flag;
   
   public Test() {
      // TODO Auto-generated constructor stub
   }

   public Test(String name, byte[] flag) {
      super();
      this.name = name;
      this.flag = flag;
   }

   public String getName() {
      return name;
   }

   public void setName(String name) {
      this.name = name;
   }

   public byte[] getFlag() {
      return flag;
   }

   public void setFlag(byte[] flag) {
      this.flag = flag;
   }
   
   
}

INFO] Hibernate:
[INFO]     drop table Language
[ERROR] gru 07, 2015 3:12:45 AM org.hibernate.tool.hbm2ddl.SchemaExport perform
[ERROR] ERROR: HHH000389: Unsuccessful: drop table Language
[ERROR] gru 07, 2015 3:12:45 AM org.hibernate.tool.hbm2ddl.SchemaExport perform
[ERROR] ERROR: GDS Exception. 335544569. Dynamic SQL Error
[ERROR] SQL error code = -607
[ERROR] Invalid command
[ERROR] Table LANGUAGE does not exist
[INFO] Hibernate:
[INFO]     create table Language (
[INFO]         txn_details_id varchar(50) not null,
[INFO]         flag blob,
[INFO]         primary key (txn_details_id)
[INFO]     )
[ERROR] gru 07, 2015 3:12:45 AM org.hibernate.tool.hbm2ddl.SchemaExport perform
[ERROR] ERROR: HHH000389: Unsuccessful: create table Language (txn_details_id varchar(50) not null, flag blob, primary key (txn_details_id))
[ERROR] gru 07, 2015 3:12:45 AM org.hibernate.tool.hbm2ddl.SchemaExport perform
[ERROR] ERROR: GDS Exception. 335544351. unsuccessful metadata update
[ERROR] cannot create index RDB$PRIMARY19
[ERROR] gru 07, 2015 3:12:45 AM org.hibernate.tool.hbm2ddl.SchemaExport execute
[ERROR] INFO: HHH000230: Schema export complete

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
                                         "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory name="">
  <property name="hibernate.connection.url">jdbc:firebirdsql://192.168.1.6:3050//baza/WebMuseum.fdb</property>
  <property name="hibernate.connection.username">xxx</property>
  <property name="hibernate.connection.password">xxx</property>
  <property name="format_sql">true</property>
  <property name="hibernate.show_sql">true</property>
  <property name="hibernate.use_sql_comments">true</property>
  <property name="hibernate.format_sql">true</property>
  <property name="hibernate.connection.driver_class">org.firebirdsql.jdbc.FBDriver</property>
  <property name="hibernate.dialect">org.hibernate.dialect.FirebirdDialect</property>
  <property name="hibernate.default_entity_mode">pojo</property>
  <property name="hibernate.hbm2ddl.auto">create</property>
</session-factory>
</hibernate-configuration>

public class HibernateUtils {

   private static final SessionFactory sessionFactory = buildSessionFactory();

   private static SessionFactory buildSessionFactory() {
      try {
         SessionFactory sessionFactory = new Configuration()
               .configure("/hibernate.cfg.xml")
               .addAnnotatedClass(Test.class)
               .buildSessionFactory();

         return sessionFactory;

      } catch (Throwable ex) {
         // log.error("Initial SessionFactory creation failed." + ex);
         throw new ExceptionInInitializerError(ex);
      }
   }

   public static SessionFactory getSessionFactory() {
      return sessionFactory;
   }

   public static void shutdown() {
      getSessionFactory().close();
   }
}

create table Language (
         txn_details_id varchar(50) not null,
        flag blob,
        primary key (txn_details_id)
)

CREATE TABLE LANGUAGE (
    TXN_DETAILS_ID VARCHAR(50) CHARACTER SET UTF8 NOT NULL COLLATE UTF8,
    FLAG BLOB);

ALTER TABLE LANGUAGE
ADD CONSTRAINT PK_LANGUAGE
PRIMARY KEY (TXN_DETAILS_ID);