错误：ORA-02289：序列不存在 - org.hibernate.exception.SQLGrammarException：无法提取 ResultSet

Question

我正在为员工表创建一个基本的休眠应用程序，我在 ManageEmployee 类的帮助下添加、更新、删除和显示记录。

实际上，ManageEmployee 是我的测试类，我使用 Employee.java 和 Employee.hbm.xml 文件来做上述事情。

详细信息：数据库：Oracle 11 g Hibernate 版本：hibernate-release-4.3.8.Final Java 版本：Java 1.8

员工表详细信息：

USER_ID NUMBER(15,0) 否 1 1
FIRST_NAME VARCHAR2(20 BYTE) 是 2
LAST_NAME VARCHAR2(20 BYTE) 是 3
薪金号码(10,0) 是 4

错误日志：您可以在日志中看到错误发生了 3 次，因为我使用 addEmployee(...) 方法在 ManageEmployee.java 类中添加了 Employee 对象 3 次，所以我假设问题出在列的序列生成器上ID。

在这里，我使用的是朴素的生成器。 ig Integer empID1 = ME.addEmployee("Zara", "Ali", 1000);

 May 12, 2015 3:34:39 AM org.hibernate.engine.jdbc.spi.SqlExceptionHelper logExceptions ERROR: ORA-02289: sequence does not exist org.hibernate.exception.SQLGrammarException: could not extract ResultSet at org.hibernate.exception.internal.SQLExceptionTypeDelegate.convert(SQLExceptionTypeDelegate.java:80) at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:49) at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:126) at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:112) at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:91) at org.hibernate.id.SequenceGenerator.generateHolder(SequenceGenerator.java:122) at org.hibernate.id.SequenceGenerator.generate(SequenceGenerator.java:115) at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:117) at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:209) at org.hibernate.event.internal.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:55) at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:194) at org.hibernate.event.internal.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:49) at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:90) at org.hibernate.internal.SessionImpl.fireSave(SessionImpl.java:715) at org.hibernate.internal.SessionImpl.save(SessionImpl.java:707) at org.hibernate.internal.SessionImpl.save(SessionImpl.java:702) at ManageEmployee.addEmployee(ManageEmployee.java:47) at ManageEmployee.main(ManageEmployee.java:23) Caused by: java.sql.SQLSyntaxErrorException: ORA-02289: sequence does not exist at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:450) at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:399) at oracle.jdbc.driver.T4C8Oall.processError(T4C8Oall.java:1059) at oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:522) at oracle.jdbc.driver.T4CTTIfun.doRPC(T4CTTIfun.java:257) at oracle.jdbc.driver.T4C8Oall.doOALL(T4C8Oall.java:587) at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:225) at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:53) at oracle.jdbc.driver.T4CPreparedStatement.executeForDescribe(T4CPreparedStatement.java:774) at oracle.jdbc.driver.OracleStatement.executeMaybeDescribe(OracleStatement.java:925) at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1111) at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:4798) at oracle.jdbc.driver.OraclePreparedStatement.executeQuery(OraclePreparedStatement.java:4845) at oracle.jdbc.driver.OraclePreparedStatementWrapper.executeQuery(OraclePreparedStatementWrapper.java:1501) at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:82) ... 13 more May 12, 2015 3:34:39 AM org.hibernate.engine.jdbc.spi.SqlExceptionHelper logExceptions WARN: SQL Error: 2289, SQLState: 42000 May 12, 2015 3:34:39 AM org.hibernate.engine.jdbc.spi.SqlExceptionHelper logExceptions ERROR: ORA-02289: sequence does not exist org.hibernate.exception.SQLGrammarException: could not extract ResultSet at org.hibernate.exception.internal.SQLExceptionTypeDelegate.convert(SQLExceptionTypeDelegate.java:80) at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:49) at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:126) at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:112) at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:91) at org.hibernate.id.SequenceGenerator.generateHolder(SequenceGenerator.java:122) at org.hibernate.id.SequenceGenerator.generate(SequenceGenerator.java:115) at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:117) at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:209) at org.hibernate.event.internal.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:55) at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:194) at org.hibernate.event.internal.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:49) at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:90) at org.hibernate.internal.SessionImpl.fireSave(SessionImpl.java:715) at org.hibernate.internal.SessionImpl.save(SessionImpl.java:707) at org.hibernate.internal.SessionImpl.save(SessionImpl.java:702) at ManageEmployee.addEmployee(ManageEmployee.java:47) at ManageEmployee.main(ManageEmployee.java:24) Caused by: java.sql.SQLSyntaxErrorException: ORA-02289: sequence does not exist at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:450) at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:399) at oracle.jdbc.driver.T4C8Oall.processError(T4C8Oall.java:1059) at oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:522) at oracle.jdbc.driver.T4CTTIfun.doRPC(T4CTTIfun.java:257) at oracle.jdbc.driver.T4C8Oall.doOALL(T4C8Oall.java:587) at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:225) at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:53) at oracle.jdbc.driver.T4CPreparedStatement.executeForDescribe(T4CPreparedStatement.java:774) at oracle.jdbc.driver.OracleStatement.executeMaybeDescribe(OracleStatement.java:925) at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1111) at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:4798) at oracle.jdbc.driver.OraclePreparedStatement.executeQuery(OraclePreparedStatement.java:4845) at oracle.jdbc.driver.OraclePreparedStatementWrapper.executeQuery(OraclePreparedStatementWrapper.java:1501) at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:82) ... 13 more May 12, 2015 3:34:39 AM org.hibernate.engine.jdbc.spi.SqlExceptionHelper logExceptions WARN: SQL Error: 2289, SQLState: 42000 May 12, 2015 3:34:39 AM org.hibernate.engine.jdbc.spi.SqlExceptionHelper logExceptions ERROR: ORA-02289: sequence does not exist org.hibernate.exception.SQLGrammarException: could not extract ResultSet at org.hibernate.exception.internal.SQLExceptionTypeDelegate.convert(SQLExceptionTypeDelegate.java:80) at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:49) at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:126) at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:112) at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:91) at org.hibernate.id.SequenceGenerator.generateHolder(SequenceGenerator.java:122) at org.hibernate.id.SequenceGenerator.generate(SequenceGenerator.java:115) at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:117) at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:209) at org.hibernate.event.internal.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:55) at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:194) at org.hibernate.event.internal.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:49) at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:90) at org.hibernate.internal.SessionImpl.fireSave(SessionImpl.java:715) at org.hibernate.internal.SessionImpl.save(SessionImpl.java:707) at org.hibernate.internal.SessionImpl.save(SessionImpl.java:702) at ManageEmployee.addEmployee(ManageEmployee.java:47) at ManageEmployee.main(ManageEmployee.java:25) Caused by: java.sql.SQLSyntaxErrorException: ORA-02289: sequence does not exist at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:450) at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:399) at oracle.jdbc.driver.T4C8Oall.processError(T4C8Oall.java:1059) at oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:522) at oracle.jdbc.driver.T4CTTIfun.doRPC(T4CTTIfun.java:257) at oracle.jdbc.driver.T4C8Oall.doOALL(T4C8Oall.java:587) at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:225) at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:53) at oracle.jdbc.driver.T4CPreparedStatement.executeForDescribe(T4CPreparedStatement.java:774) at oracle.jdbc.driver.OracleStatement.executeMaybeDescribe(OracleStatement.java:925) at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1111) at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:4798) at oracle.jdbc.driver.OraclePreparedStatement.executeQuery(OraclePreparedStatement.java:4845) at oracle.jdbc.driver.OraclePreparedStatementWrapper.executeQuery(OraclePreparedStatementWrapper.java:1501) at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:82) ... 13 more First Name: a Last Name: b Salary: 2000

ManageEmployee.java 文件代码：

 import java.util.List; import java.util.Date; import java.util.Iterator; import org.hibernate.HibernateException; import org.hibernate.Session; import org.hibernate.Transaction; import org.hibernate.SessionFactory; import org.hibernate.cfg.Configuration; public class ManageEmployee { private static SessionFactory factory; public static void main(String[] args) { try{ factory = new Configuration().configure().buildSessionFactory(); }catch (Throwable ex) { System.err.println("Failed to create sessionFactory object." + ex); throw new ExceptionInInitializerError(ex); } ManageEmployee ME = new ManageEmployee(); /* Add few employee records in database */ Integer empID1 = ME.addEmployee("Zara", "Ali", 1000); Integer empID2 = ME.addEmployee("Daisy", "Das", 5000); Integer empID3 = ME.addEmployee("John", "Paul", 10000); /* List down all the employees */ ME.listEmployees(); /* Update employee's records */ // ME.updateEmployee(empID1, 5000); /* Delete an employee from the database */ // ME.deleteEmployee(empID2); /* List down new list of the employees */ // ME.listEmployees(); } /* Method to CREATE an employee in the database */ public Integer addEmployee(String fname, String lname, int salary){ Session session = factory.openSession(); Transaction tx = null; Integer employeeID = null; try{ tx = session.beginTransaction(); Employee employee = new Employee(fname, lname, salary); employeeID = (Integer) session.save(employee); tx.commit(); }catch (HibernateException e) { if (tx!=null) tx.rollback(); e.printStackTrace(); }finally { session.close(); } return employeeID; } /* Method to READ all the employees */ public void listEmployees( ){ Session session = factory.openSession(); Transaction tx = null; try{ tx = session.beginTransaction(); List employees = session.createQuery("FROM Employee").list(); for (Iterator iterator = employees.iterator(); iterator.hasNext();){ Employee employee = (Employee) iterator.next(); System.out.print("First Name: " + employee.getFirstName()); System.out.print(" Last Name: " + employee.getLastName()); System.out.println(" Salary: " + employee.getSalary()); } tx.commit(); }catch (HibernateException e) { if (tx!=null) tx.rollback(); e.printStackTrace(); }finally { session.close(); } } /* Method to UPDATE salary for an employee */ public void updateEmployee(Integer EmployeeID, int salary ){ Session session = factory.openSession(); Transaction tx = null; try{ tx = session.beginTransaction(); Employee employee = (Employee)session.get(Employee.class, EmployeeID); employee.setSalary( salary ); session.update(employee); tx.commit(); }catch (HibernateException e) { if (tx!=null) tx.rollback(); e.printStackTrace(); }finally { session.close(); } } /* Method to DELETE an employee from the records */ public void deleteEmployee(Integer EmployeeID){ Session session = factory.openSession(); Transaction tx = null; try{ tx = session.beginTransaction(); Employee employee = (Employee)session.get(Employee.class, EmployeeID); session.delete(employee); tx.commit(); }catch (HibernateException e) { if (tx!=null) tx.rollback(); e.printStackTrace(); }finally { session.close(); } } }

映射文件：

 <?xml version="1.0" encoding="utf-8"?> <!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD//EN" "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd"> <hibernate-mapping> <class name="Employee" table="EMPLOYEE"> <meta attribute="class-description"> This class contains the employee detail. </meta> <id name="user_id" type="int" column="user_id"> <generator class="native"/> </id> <property name="firstName" column="first_name" type="string"/> <property name="lastName" column="last_name" type="string"/> <property name="salary" column="salary" type="int"/> </class> </hibernate-mapping>

 public class Employee { private int user_id; private String firstName; private String lastName; private int salary; public Employee() {} public Employee(String fname, String lname, int salary) { this.firstName = fname; this.lastName = lname; this.salary = salary; } public String getFirstName() { return firstName; } public void setFirstName( String first_name ) { this.firstName = first_name; } public String getLastName() { return lastName; } public void setLastName( String last_name ) { this.lastName = last_name; } public int getSalary() { return salary; } public void setSalary( int salary ) { this.salary = salary; } public int getUser_id() { return user_id; } public void setUser_id(int user_id) { this.user_id = user_id; } }

Answer 1

Employee 类缺少序列生成器，因此 hibernate 无法插入该行。 它应该是这样的，它将 id 计数列增加 1：

@Id
@GeneratedValue(strategy=GenerationType.SEQUENCE, generator="SEQUENCE1")
@SequenceGenerator(name="SEQUENCE1", sequenceName="SEQUENCE1", allocationSize=1)
private int user_id;

Answer 2

在阅读了Oracle 序列及其运作方式，并告诉 Hibernate 您使用的是 SEQUENCE （第 5.1.2.2.4 节）而不是本机生成器之后，我已经修复了我的错误。

我通过以下查询在 oracle 数据库中创建了一个序列并更新了我的 hbm.xml 文件

 CREATE SEQUENCE TAB_CUSTOMER_SEQ START WITH 1 MAXVALUE 999999999999999999999999999 MINVALUE 1 NOCYCLE CACHE 20 NOORDER;

 <id name="user_id" type="int" column="user_id"> <generator class="sequence"> <param name="sequence">TAB_CUSTOMER_SEQ</param> </generator> </id>

Answer 3

您没有为表 EMPLOYEE 创建序列来自动生成 USER_ID。 这是你的问题。 所以现在你需要在 DATABASE 和你的映射文件中为表 EMPLOYEE 创建一个序列

Answer 4

尝试这个：

<generator class="sequence"> <param name="sequence_name">SEQUENCE_NAME</param></generator>

param 的值从“序列”更改为“序列名称”。

Answer 5

就我而言，我忘记在 @SequenceGenerator(name = "TADDRESS_SEQ", sequenceName = "TADDRESS_SEQ", schema = "source", allocationSize = 1) 中添加架构参数