Firebird via hibernate

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE hibernate-mapping PUBLIC
    "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
    "(URL address blocked: See forum rules)">

<hibernate-mapping
>
    <class
        name="pl.my.secret.package.SystemParameter"
        table="system_parameters"
    >

        <id
            name="id"
            type="java.lang.Long"
        >
                <column
                    name="system_parameters_id"
                />
            <generator class="native">
            </generator>
        </id>

        <version
            name="version"
            column="version"
            type="java.sql.Timestamp"
        />

        <property
            name="name"
            type="string"
            update="true"
            insert="true"
        >
            <column
                name="name"
                length="255"
                not-null="true"
                unique="true"
            />
        </property>

        <property
            name="value"
            type="string"
            update="true"
            insert="true"
        >
            <column
                name="content"
                length="255"
                not-null="true"
            />
        </property>

        <!--
            To add non XDoclet property mappings, create a file named
                hibernate-properties-SystemParameter.xml
            containing the additional properties and place it in your merge dir.
        -->

    </class>

</hibernate-mapping>

20:30:48,472 INFO  [HibernateTransactionManager] Using DataSource [org.firebirdsql.pool.FBWrappingDataSource@70c242] of Hibernate SessionFactory for HibernateTransactionManager
20:30:48,475 INFO  [STDOUT] Hibernate: select this_.system_parameters_id as system1_15_0_, this_.version as version15_0_, this_.name as name15_0_, this_.content as content15_0_ from system_parameters this_ where this_.name=?
20:30:48,478 WARN  [JDBCExceptionReporter] SQL Error: 335544569, SQLState: HY000
20:30:48,478 ERROR [JDBCExceptionReporter] GDS Exception. 335544569. Dynamic SQL Error
SQL error code = -204
Table unknown
SYSTEM_PARAMETERS
At line 1, column 162

select this_.system_parameters_id as system1_15_0_, this_.version as version15_0_, this_.name as name15_0_, this_.content as content15_0_ from system_parameters this_ where this_.name=?