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我已经用休眠完成了我的第一个小“hello world”，在我的 SQLServer 数据库中插入了一些数据。现在我正在尝试在不更改域类上的注释的情况下切换 db，但我遇到了问题。我尝试使用一种行为来处理 db 上的 id，使用 sql server 上的标识列和 oracle 上带有触发器的序列（我想对 postgres 做同样的事情），所以我声明在我的课上

@Id
@Column(name = "ID")
@GeneratedValue(strategy=GenerationType.AUTO)
public long getId() {
    return this.id;
}

这在 SQLServer 上运行良好，但它在 Oracle 上给了我这个错误：

[main] ERROR org.hibernate.util.JDBCExceptionReporter - ORA-02289: sequence does not exist

org.hibernate.exception.SQLGrammarException: could not get next sequence value
at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:92)
at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66)
at org.hibernate.id.SequenceGenerator.generateHolder(SequenceGenerator.java:132)
at org.hibernate.id.SequenceGenerator.generate(SequenceGenerator.java:105)
at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:121)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:210)
at org.hibernate.event.def.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:56)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:195)
at org.hibernate.event.def.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:50)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:93)
at org.hibernate.impl.SessionImpl.fireSave(SessionImpl.java:713)
at org.hibernate.impl.SessionImpl.save(SessionImpl.java:701)
at org.hibernate.impl.SessionImpl.save(SessionImpl.java:697)
at test.Main.main(Main.java:23)
Caused by: java.sql.SQLSyntaxErrorException: ORA-02289: sequence does not exist

at oracle.jdbc.driver.SQLStateMapping.newSQLException(SQLStateMapping.java:91)
at oracle.jdbc.driver.DatabaseError.newSQLException(DatabaseError.java:133)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:206)
at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:455)
at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:413)
at oracle.jdbc.driver.T4C8Oall.receive(T4C8Oall.java:1034)
at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:194)
at oracle.jdbc.driver.T4CPreparedStatement.executeForDescribe(T4CPreparedStatement.java:791)
at oracle.jdbc.driver.T4CPreparedStatement.executeMaybeDescribe(T4CPreparedStatement.java:866)
at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1186)
at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:3387)
at oracle.jdbc.driver.OraclePreparedStatement.executeQuery(OraclePreparedStatement.java:3431)
at oracle.jdbc.driver.OraclePreparedStatementWrapper.executeQuery(OraclePreparedStatementWrapper.java:1491)
at org.hibernate.id.SequenceGenerator.generateHolder(SequenceGenerator.java:112)
... 11 more

请注意，同样使用 strategy=GenerationType.SEQUENCE 我得到了同样的错误

我想知道：有什么办法可以做我正在尝试的事情吗？

抱歉，我发布了错误的 stackTrace，正确的是：

[main] ERROR org.hibernate.util.JDBCExceptionReporter - ORA-02289: sequence does not exist

org.hibernate.exception.SQLGrammarException: could not get next sequence value
at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:92)
at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66)
at org.hibernate.id.SequenceGenerator.generateHolder(SequenceGenerator.java:132)
at org.hibernate.id.SequenceGenerator.generate(SequenceGenerator.java:105)
at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:121)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:210)
at org.hibernate.event.def.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:56)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:195)
at org.hibernate.event.def.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:50)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:93)
at org.hibernate.impl.SessionImpl.fireSave(SessionImpl.java:713)
at org.hibernate.impl.SessionImpl.save(SessionImpl.java:701)
at org.hibernate.impl.SessionImpl.save(SessionImpl.java:697)
at test.Main.main(Main.java:23)
Caused by: java.sql.SQLSyntaxErrorException: ORA-02289: sequence does not exist

at oracle.jdbc.driver.SQLStateMapping.newSQLException(SQLStateMapping.java:91)
at oracle.jdbc.driver.DatabaseError.newSQLException(DatabaseError.java:133)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:206)
at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:455)
at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:413)
at oracle.jdbc.driver.T4C8Oall.receive(T4C8Oall.java:1034)
at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:194)
at oracle.jdbc.driver.T4CPreparedStatement.executeForDescribe(T4CPreparedStatement.java:791)
at oracle.jdbc.driver.T4CPreparedStatement.executeMaybeDescribe(T4CPreparedStatement.java:866)
at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1186)
at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:3387)
at oracle.jdbc.driver.OraclePreparedStatement.executeQuery(OraclePreparedStatement.java:3431)
at oracle.jdbc.driver.OraclePreparedStatementWrapper.executeQuery(OraclePreparedStatementWrapper.java:1491)
at org.hibernate.id.SequenceGenerator.generateHolder(SequenceGenerator.java:112)
... 11 more

请注意，同样使用 strategy=GenerationType.SEQUENCE 我得到了同样的错误

4

1 回答 1

1

奇怪的是，IDENTITY当您使用AUTO. 尝试使用SEQUENCEOracle9i 的生成。这是 JBoss 文档中给出的示例。

@Entity
@javax.persistence.SequenceGenerator(
    name="SEQ_STORE",
    sequenceName="my_sequence"
)
public class Store implements Serializable {
    private Long id;

    @Id
    @GeneratedValue(strategy=GenerationType.SEQUENCE, generator="SEQ_STORE")
    public Long getId() { return id; }
}

查看此页面以获取不同数据库方言支持的生成类型的记录列表。

于 2013-03-20T16:59:58.907 回答