ORA-00942 SQLException with Hibernate (Unable to find a table)

Question

我正在尝试运行一个简单的 Hibernate 应用程序，但出现此错误：

org.hibernate.exception.SQLGrammarException: could not execute query
java.sql.SQLException: ORA-00942: table or view does not exist

我的实体：

package beans;

import javax.persistence.*;

@Entity
public class Idt {
    @Id
    private int id;
    @Column(name="name")
    private String name;

    public Idt(){
    }

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

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

我的表在 Hr 用户中称为 IDT。

CREATE TABLE "HR"."IDT"
  (
    "ID"   NUMBER NOT NULL ENABLE,
    "NAME" VARCHAR2(20 BYTE),
    CONSTRAINT "IDT_PK" PRIMARY KEY ("ID") USING INDEX PCTFREE 10 INITRANS 2 MAXTRANS 255 STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645 PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT) TABLESPACE "USERS" ENABLE
  )
  PCTFREE 10 PCTUSED 40 INITRANS 1 MAXTRANS 255 NOCOMPRESS LOGGING STORAGE
  (
    INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645 PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT
  )
  TABLESPACE "USERS" ;

Hibernate.cfg.xml：

<?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>

                    <!-- Database connection settings -->
                    <property name="connection.driver_class">oracle.jdbc.driver.OracleDriver</property>
                    <property name="connection.url">jdbc:oracle:thin:@localhost:1521/xe</property>
                    <property name="connection.username">SYSTEM</property>
                    <property name="connection.password">19141914</property>

                    <!-- SQL dialect -->
                    <property name="dialect">org.hibernate.dialect.OracleDialect</property>

                    <!-- Echo all executed SQL to stdout -->
                    <property name="show_sql">true</property>

                    <property name="current_session_context_class">thread</property>

                    <mapping class="beans.Idt"/>



                </session-factory>

            </hibernate-configuration>     

我猜这与实体的映射有关，因为 SQLException：

java.sql.SQLException: ORA-00942: table or view does not exist

Answer 1

也许您需要指定架构或类似的东西：

@Entity 
@Table(schema = "HR")
public class Idt { ... }

还要确保 Hibernate ( SYSTEM)使用的帐户有权访问该表。