JPA序列生成器不工作

试图建立一个ID与JPA序列发生器：有了这个实体，我能够做负载，并合并JPA序列生成器不工作

@Entity 
@Table(name=CommitmentRegisterDetailTable.TABLE) 
public class TestCrd { 

    @Id 
    @Column(name=CommitmentRegisterDetailTable.COMMIT_REG_DETAIL_ID) 
    @SequenceGenerator(name="CRD_ID", sequenceName="COMMIT_REG_DETAIL_ID_SEQ", allocationSize=1) 
    @GeneratedValue(strategy=GenerationType.SEQUENCE, generator="CRD_ID") 
    private int id; 

    @Column(name=CommitmentRegisterDetailTable.COMMIT_REG_ID) 
    private int commitRegId = 89915; 
}

。但是，当我执行persist（）时，SQL输出显示它尝试执行id = 0的INSERT。我是否缺少一个步骤？

这是一个Oracle数据库。

代码，我坚持：

TestCrd testCrd = new TestCrd(); 

    EntityManagerFactory factory = Persistence.createEntityManagerFactory("incepPersistence"); 
    EntityManager em = factory.createEntityManager(); 

    em.getTransaction().begin(); 

    em.persist(testCrd); 

    em.getTransaction().commit(); 
    em.close(); 
    factory.close();

序列的详细信息：

CREATED 07-JUN-16 
LAST_DDL_TIME 07-JUN-16 
SEQUENCE_OWNER RMS 
SEQUENCE_NAME COMMIT_REG_DETAIL_ID_SEQ 
MIN_VALUE 0 
MAX_VALUE 999999999999999999999999999 
INCREMENT_BY 1 
CYCLE_FLAG N 
ORDER_FLAG N 
CACHE_SIZE 0 
LAST_NUMBER 107568

这是去到DB呼叫。正如你所看到的第一个参数COMMIT_REG_DETAIL_ID分配的0

Call: INSERT INTO RMS.COMMITMENT_REGISTER_DETAIL (COMMIT_REG_DETAIL_ID, AMOUNT, COMMITTED, LINE_DESCRIPTION, DISBURSED, INVOICED, LINE_NUMBER, OBLIGATED, RECEIVED, ACCOUNT_COMBO_ID, COMMIT_REG_ID, OBJECT_CLASS_CODE, SP_DETAIL_VALUE_ID) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?) 
bind => [0, 5127, null, null, null, null, 0, null, null, 2097, 89843, 31510, null] 
Query: InsertObjectQuery([email protected])

值这里的设置为：最完整的JPA日志：

[EL Finest]: jpa: 2016-07-06 13:56:00.506--ServerSession(786709615)--Thread(Thread[main,5,main])--Begin predeploying Persistence Unit incepPersistence; session file:/D:/Development/Workspaces/InCEP/incep-aspr-aqc-local/codeCharge/WEB-INF/classes/_incepPersistence; state Initial; factoryCount 0 
[EL Finest]: properties: 2016-07-06 13:56:00.535--ServerSession(786709615)--Thread(Thread[main,5,main])--property=eclipselink.orm.throw.exceptions; default value=true 
[EL Finest]: properties: 2016-07-06 13:56:00.536--ServerSession(786709615)--Thread(Thread[main,5,main])--property=eclipselink.weaving.changetracking; default value=true 
[EL Finest]: properties: 2016-07-06 13:56:00.536--ServerSession(786709615)--Thread(Thread[main,5,main])--property=eclipselink.weaving.lazy; default value=true 
[EL Finest]: properties: 2016-07-06 13:56:00.536--ServerSession(786709615)--Thread(Thread[main,5,main])--property=eclipselink.weaving.eager; default value=false 
[EL Finest]: properties: 2016-07-06 13:56:00.537--ServerSession(786709615)--Thread(Thread[main,5,main])--property=eclipselink.weaving.fetchgroups; default value=true 
[EL Finest]: properties: 2016-07-06 13:56:00.537--ServerSession(786709615)--Thread(Thread[main,5,main])--property=eclipselink.weaving.internal; default value=true 
[EL Finest]: properties: 2016-07-06 13:56:00.539--ServerSession(786709615)--Thread(Thread[main,5,main])--property=eclipselink.multitenant.tenants-share-emf; default value=true 
[EL Finest]: properties: 2016-07-06 13:56:00.539--ServerSession(786709615)--Thread(Thread[main,5,main])--property=eclipselink.multitenant.tenants-share-cache; default value=false 
[EL Finer]: metadata: 2016-07-06 13:56:00.573--ServerSession(786709615)--Thread(Thread[main,5,main])--Searching for default mapping file in file:/D:/Development/Workspaces/InCEP/incep-aspr-aqc-local/codeCharge/WEB-INF/classes/ (There is no English translation for this message.) 
[EL Finer]: metadata: 2016-07-06 13:56:00.976--ServerSession(786709615)--Thread(Thread[main,5,main])--Found a default mapping file at file:/D:/Development/Workspaces/InCEP/incep-aspr-aqc-local/codeCharge/WEB-INF/classes/META-INF/orm.xml for root URL file:/D:/Development/Workspaces/InCEP/incep-aspr-aqc-local/codeCharge/WEB-INF/classes/ (There is no English translation for this message.) 
[EL Finer]: metadata: 2016-07-06 13:56:02.326--ServerSession(786709615)--Thread(Thread[main,5,main])--Searching for default mapping file in file:/D:/Development/Workspaces/InCEP/incep-aspr-aqc-local/codeCharge/WEB-INF/classes/ (There is no English translation for this message.) 
[EL Config]: metadata: 2016-07-06 13:56:02.775--ServerSession(786709615)--Thread(Thread[main,5,main])--The access type for the persistent class [class com.incep.test.commitmentregister.TestCrd] is set to [FIELD]. 
[EL Config]: metadata: 2016-07-06 13:56:02.815--ServerSession(786709615)--Thread(Thread[main,5,main])--The alias name for the entity class [class com.incep.test.commitmentregister.TestCrd] is being defaulted to: TestCrd. 
[EL Finer]: weaver: 2016-07-06 13:56:02.889--ServerSession(786709615)--Thread(Thread[main,5,main])--Class [com.incep.test.commitmentregister.TestCrd] registered to be processed by weaver. 
[EL Finest]: jpa: 2016-07-06 13:56:02.898--ServerSession(786709615)--Thread(Thread[main,5,main])--End predeploying Persistence Unit incepPersistence; session file:/D:/Development/Workspaces/InCEP/incep-aspr-aqc-local/codeCharge/WEB-INF/classes/_incepPersistence; state Predeployed; factoryCount 0 
[EL Finer]: weaver: 2016-07-06 13:56:02.899--Thread(Thread[main,5,main])--JavaSECMPInitializer - transformer is null. 
[EL Finest]: jpa: 2016-07-06 13:56:02.9--ServerSession(786709615)--Thread(Thread[main,5,main])--Begin predeploying Persistence Unit incepPersistence; session file:/D:/Development/Workspaces/InCEP/incep-aspr-aqc-local/codeCharge/WEB-INF/classes/_incepPersistence; state Predeployed; factoryCount 0 
[EL Finest]: jpa: 2016-07-06 13:56:02.901--ServerSession(786709615)--Thread(Thread[main,5,main])--End predeploying Persistence Unit incepPersistence; session file:/D:/Development/Workspaces/InCEP/incep-aspr-aqc-local/codeCharge/WEB-INF/classes/_incepPersistence; state Predeployed; factoryCount 1 
[EL Finest]: jpa: 2016-07-06 13:56:22.435--ServerSession(786709615)--Thread(Thread[main,5,main])--Begin deploying Persistence Unit incepPersistence; session file:/D:/Development/Workspaces/InCEP/incep-aspr-aqc-local/codeCharge/WEB-INF/classes/_incepPersistence; state Predeployed; factoryCount 1 
[EL Finer]: 2016-07-06 13:56:22.453--ServerSession(786709615)--Thread(Thread[main,5,main])--Could not initialize Validation Factory. Encountered following exception: java.lang.NoClassDefFoundError: javax/validation/Validation 
[EL Finest]: properties: 2016-07-06 13:56:22.481--ServerSession(786709615)--Thread(Thread[main,5,main])--property=eclipselink.logging.logger; value=DefaultLogger; translated value=org.eclipse.persistence.logging.DefaultSessionLog 
[EL Finest]: properties: 2016-07-06 13:56:22.482--ServerSession(786709615)--Thread(Thread[main,5,main])--property=eclipselink.logging.level; value=FINEST; translated value=FINEST 
[EL Finest]: properties: 2016-07-06 13:56:22.483--ServerSession(786709615)--Thread(Thread[main,5,main])--property=eclipselink.logging.level; value=FINEST; translated value=FINEST 
[EL Finest]: properties: 2016-07-06 13:56:22.484--ServerSession(786709615)--Thread(Thread[main,5,main])--property=eclipselink.target-database; value=org.eclipse.persistence.platform.database.oracle.OraclePlatform 
[EL Finest]: properties: 2016-07-06 13:56:22.493--ServerSession(786709615)--Thread(Thread[main,5,main])--property=eclipselink.id-validation; value=NULL 
[EL Finest]: properties: 2016-07-06 13:56:22.493--ServerSession(786709615)--Thread(Thread[main,5,main])--property=eclipselink.session.customizer; value=com.apprio.acquisition.JPAEclipseLinkSessionCustomizer 
_JPAEclipseLinkSessionCustomizer: configured java:comp/env/jdbc/OracleRMS_DS 
[EL Info]: 2016-07-06 13:56:22.496--ServerSession(786709615)--Thread(Thread[main,5,main])--EclipseLink, version: Eclipse Persistence Services - 2.4.1.v20121003-ad44345 
[EL Config]: connection: 2016-07-06 13:56:22.509--ServerSession(786709615)--Connection(1167290948)--Thread(Thread[main,5,main])--connecting(DatabaseLogin(
    platform=>OraclePlatform 
    user name=> "" 
    connector=>JNDIConnector datasource name=>java:comp/env/jdbc/OracleRMS_DS 
)) 
[EL Config]: connection: 2016-07-06 13:56:23.129--ServerSession(786709615)--Connection(452044444)--Thread(Thread[main,5,main])--Connected: jdbc:oracle:thin:@localhost:1521:INCEPDEV 
    User: RMS 
    Database: Oracle Version: Oracle Database 11g Release 11.2.0.3.0 - 64bit Production 
    Driver: Oracle JDBC driver Version: 11.2.0.2.0 
[EL Finest]: connection: 2016-07-06 13:56:23.143--ServerSession(786709615)--Connection(839511213)--Thread(Thread[main,5,main])--Connection acquired from connection pool [read]. 
[EL Finest]: connection: 2016-07-06 13:56:23.144--ServerSession(786709615)--Connection(839511213)--Thread(Thread[main,5,main])--Connection released to connection pool [read]. 
[EL Config]: connection: 2016-07-06 13:56:23.144--ServerSession(786709615)--Connection(697396101)--Thread(Thread[main,5,main])--connecting(DatabaseLogin(
    platform=>OraclePlatform 
    user name=> "" 
    connector=>JNDIConnector datasource name=>java:comp/env/jdbc/OracleRMS_DS 
)) 
[EL Config]: connection: 2016-07-06 13:56:23.31--ServerSession(786709615)--Connection(170524181)--Thread(Thread[main,5,main])--Connected: jdbc:oracle:thin:@localhost:1521:INCEPDEV 
    User: RMS 
    Database: Oracle Version: Oracle Database 11g Release 11.2.0.3.0 - 64bit Production 
    Driver: Oracle JDBC driver Version: 11.2.0.2.0 
[EL Finest]: sequencing: 2016-07-06 13:56:23.327--ServerSession(786709615)--Thread(Thread[main,5,main])--sequencing connected, state is Preallocation_NoTransaction_State 
[EL Finest]: sequencing: 2016-07-06 13:56:23.327--ServerSession(786709615)--Thread(Thread[main,5,main])--sequence COMMIT_REG_DETAIL_ID_SEQ: preallocation size 1 
[EL Info]: connection: 2016-07-06 13:56:23.365--ServerSession(786709615)--Thread(Thread[main,5,main])--file:/D:/Development/Workspaces/InCEP/incep-aspr-aqc-local/codeCharge/WEB-INF/classes/_incepPersistence login successful 
[EL Finer]: metamodel: 2016-07-06 13:56:23.441--ServerSession(786709615)--Thread(Thread[main,5,main])--Canonical Metamodel class [com.incep.test.commitmentregister.TestCrd_] not found during initialization. 
[EL Finest]: jpa: 2016-07-06 13:56:23.442--ServerSession(786709615)--Thread(Thread[main,5,main])--End deploying Persistence Unit incepPersistence; session file:/D:/Development/Workspaces/InCEP/incep-aspr-aqc-local/codeCharge/WEB-INF/classes/_incepPersistence; state Deployed; factoryCount 1 
[EL Finer]: connection: 2016-07-06 13:56:29.205--ServerSession(786709615)--Thread(Thread[main,5,main])--client acquired: 1882760631 
[EL Finer]: transaction: 2016-07-06 13:56:29.235--ClientSession(1882760631)--Thread(Thread[main,5,main])--acquire unit of work: 102009560 
[EL Finest]: transaction: 2016-07-06 13:56:30.565--UnitOfWork(102009560)--Thread(Thread[main,5,main])--persist() operation called on: [email protected] 
[EL Finer]: transaction: 2016-07-06 13:56:33.25--UnitOfWork(102009560)--Thread(Thread[main,5,main])--begin unit of work commit 
[EL Finest]: query: 2016-07-06 13:56:33.261--UnitOfWork(102009560)--Thread(Thread[main,5,main])--Execute query InsertObjectQuery([email protected]) 
[EL Finest]: connection: 2016-07-06 13:56:33.267--ServerSession(786709615)--Connection(13402762)--Thread(Thread[main,5,main])--Connection acquired from connection pool [default]. 
[EL Finer]: transaction: 2016-07-06 13:56:33.267--ClientSession(1882760631)--Connection(13402762)--Thread(Thread[main,5,main])--begin transaction 
[EL Finest]: connection: 2016-07-06 13:56:33.268--ClientSession(1882760631)--Thread(Thread[main,5,main])--reconnecting to external connection pool 
[EL Fine]: sql: 2016-07-06 13:56:33.557--ClientSession(1882760631)--Connection(1921921646)--Thread(Thread[main,5,main])--INSERT INTO RMS.COMMITMENT_REGISTER_DETAIL (COMMIT_REG_DETAIL_ID, COMMIT_REG_ID) VALUES (?, ?) 
    bind => [0, 89915] 
[EL Fine]: sql: 2016-07-06 13:56:33.9--ClientSession(1882760631)--Thread(Thread[main,5,main])--SELECT 1 FROM DUAL 
[EL Warning]: 2016-07-06 13:56:33.927--UnitOfWork(102009560)--Thread(Thread[main,5,main])--Local Exception Stack: 
Exception [EclipseLink-4002] (Eclipse Persistence Services - 2.4.1.v20121003-ad44345): org.eclipse.persistence.exceptions.DatabaseException 
Internal Exception: java.sql.SQLIntegrityConstraintViolationException: ORA-00001: unique constraint (RMS.COMMITMENT_REGISTER_DETAIL_PK) violated 

Error Code: 1 
Call: INSERT INTO RMS.COMMITMENT_REGISTER_DETAIL (COMMIT_REG_DETAIL_ID, COMMIT_REG_ID) VALUES (?, ?) 
    bind => [0, 89915] 
Query: InsertObjectQuery([email protected]) 
    at org.eclipse.persistence.exceptions.DatabaseException.sqlException(DatabaseException.java:324) 
    at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.executeDirectNoSelect(DatabaseAccessor.java:851) 
    at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.executeNoSelect(DatabaseAccessor.java:913) 
    at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.basicExecuteCall(DatabaseAccessor.java:594) 
    at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.executeCall(DatabaseAccessor.java:537) 
    at org.eclipse.persistence.internal.sessions.AbstractSession.basicExecuteCall(AbstractSession.java:1800) 
    at org.eclipse.persistence.sessions.server.ClientSession.executeCall(ClientSession.java:286) 
    at org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.executeCall(DatasourceCallQueryMechanism.java:207) 
    at org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.executeCall(DatasourceCallQueryMechanism.java:193) 
    at org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.insertObject(DatasourceCallQueryMechanism.java:342) 
    at org.eclipse.persistence.internal.queries.StatementQueryMechanism.insertObject(StatementQueryMechanism.java:162) 
    at org.eclipse.persistence.internal.queries.StatementQueryMechanism.insertObject(StatementQueryMechanism.java:177) 
    at org.eclipse.persistence.internal.queries.DatabaseQueryMechanism.insertObjectForWrite(DatabaseQueryMechanism.java:471) 
    at org.eclipse.persistence.queries.InsertObjectQuery.executeCommit(InsertObjectQuery.java:80) 
    at org.eclipse.persistence.queries.InsertObjectQuery.executeCommitWithChangeSet(InsertObjectQuery.java:90) 
    at org.eclipse.persistence.internal.queries.DatabaseQueryMechanism.executeWriteWithChangeSet(DatabaseQueryMechanism.java:286) 
    at org.eclipse.persistence.queries.WriteObjectQuery.executeDatabaseQuery(WriteObjectQuery.java:58) 
    at org.eclipse.persistence.queries.DatabaseQuery.execute(DatabaseQuery.java:852) 
    at org.eclipse.persistence.queries.DatabaseQuery.executeInUnitOfWork(DatabaseQuery.java:751) 
    at org.eclipse.persistence.queries.ObjectLevelModifyQuery.executeInUnitOfWorkObjectLevelModifyQuery(ObjectLevelModifyQuery.java:108) 
    at org.eclipse.persistence.queries.ObjectLevelModifyQuery.executeInUnitOfWork(ObjectLevelModifyQuery.java:85) 
    at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.internalExecuteQuery(UnitOfWorkImpl.java:2875) 
    at org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1602) 
    at org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1584) 
    at org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1535) 
    at org.eclipse.persistence.internal.sessions.CommitManager.commitNewObjectsForClassWithChangeSet(CommitManager.java:224) 
    at org.eclipse.persistence.internal.sessions.CommitManager.commitAllObjectsWithChangeSet(CommitManager.java:123) 
    at org.eclipse.persistence.internal.sessions.AbstractSession.writeAllObjectsWithChangeSet(AbstractSession.java:3914) 
    at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.commitToDatabase(UnitOfWorkImpl.java:1419) 
    at org.eclipse.persistence.internal.sessions.RepeatableWriteUnitOfWork.commitToDatabase(RepeatableWriteUnitOfWork.java:634) 
    at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.commitToDatabaseWithChangeSet(UnitOfWorkImpl.java:1509) 
    at org.eclipse.persistence.internal.sessions.RepeatableWriteUnitOfWork.commitRootUnitOfWork(RepeatableWriteUnitOfWork.java:266) 
    at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.commitAndResume(UnitOfWorkImpl.java:1147) 
    at org.eclipse.persistence.internal.jpa.transaction.EntityTransactionImpl.commitInternal(EntityTransactionImpl.java:84) 
    at org.eclipse.persistence.internal.jpa.transaction.EntityTransactionImpl.commit(EntityTransactionImpl.java:63) 
    at com.incep.test.commitmentregister.TestCommitmentRegisterManager.testLoadSave(TestCommitmentRegisterManager.java:729) 
    at com.incep.test.commitmentregister.TestCommitmentRegisterManager.testAll(TestCommitmentRegisterManager.java:73) 
    at com.incep.test.TestMaster.testAll(TestMaster.java:54) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
    at java.lang.reflect.Method.invoke(Method.java:606) 
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50) 
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) 
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47) 
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17) 
    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325) 
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78) 
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57) 
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) 
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) 
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) 
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) 
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) 
    at org.junit.runners.ParentRunner.run(ParentRunner.java:363) 
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86) 
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) 
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459) 
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675) 
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382) 
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192) 
Caused by: java.sql.SQLIntegrityConstraintViolationException: ORA-00001: unique constraint (RMS.COMMITMENT_REGISTER_DETAIL_PK) violated 

    at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:440) 
    at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:396) 
    at oracle.jdbc.driver.T4C8Oall.processError(T4C8Oall.java:837) 
    at oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:445) 
    at oracle.jdbc.driver.T4CTTIfun.doRPC(T4CTTIfun.java:191) 
    at oracle.jdbc.driver.T4C8Oall.doOALL(T4C8Oall.java:523) 
    at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:207) 
    at oracle.jdbc.driver.T4CPreparedStatement.executeForRows(T4CPreparedStatement.java:1010) 
    at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1315) 
    at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:3576) 
    at oracle.jdbc.driver.OraclePreparedStatement.executeUpdate(OraclePreparedStatement.java:3657) 
    at oracle.jdbc.driver.OraclePreparedStatementWrapper.executeUpdate(OraclePreparedStatementWrapper.java:1350) 
    at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.executeDirectNoSelect(DatabaseAccessor.java:842) 
    ... 59 more 

[EL Finer]: transaction: 2016-07-06 13:56:33.942--ClientSession(1882760631)--Connection(1921921646)--Thread(Thread[main,5,main])--rollback transaction 
[EL Finest]: connection: 2016-07-06 13:56:33.966--ServerSession(786709615)--Connection(13402762)--Thread(Thread[main,5,main])--Connection released to connection pool [default]. 
[EL Finer]: transaction: 2016-07-06 13:56:33.967--UnitOfWork(102009560)--Thread(Thread[main,5,main])--release unit of work 
[EL Finer]: connection: 2016-07-06 13:56:33.967--ClientSession(1882760631)--Thread(Thread[main,5,main])--client released

来源

2016-07-06 Holden

你可以张贴坚持的源代码？ – Saravana

添加了持久代码。 – Holden

当对象被持久化时，什么调用去DB？这就是你有一个JPA提供程序日志 –

好像我发现我的问题。从persistence.xml删除ID验证属性似乎使序列正常工作。

<property name="eclipselink.id-validation" value="NULL" />

进一步更新：

我最终设法解决我的问题的方法是离开ID验证方法同上，设置为NULL。含义为0的ID不会抛出错误，但不会触发持久存储上的新顺序。

所以我将我的对象上的id从int更改为Integer对象。当id为null时，将获取新的序列标识。当id是Integer（0）时，不会引发错误。

来源

2016-07-11 22:30:33 Holden

两种情况。

（1）

@Id 
@GeneratedValue(strategy = GenerationType.AUTO) 
private int idx;

AUTO_INCREMENT，序列对象 - >策略= GenerationType.AUTO

（2）你的情况下。

元素详细

公共抽象字符串名称（必需的）的唯一发电机名称可以通过一个或多个类引用成为主键值发电机。

public abstract字符串sequenceName（可选）要从中获取主键值的数据库序列对象的名称。默认为提供者选择的值。默认值：hibernate_sequence

公共抽象INT 初值（可选）的值从该序列对象是开始产生。默认值：1

public abstract int allocationSize（可选）从序列中分配序列号时增加的数量。默认值：50

DDL

create sequence RTDS_ADSINPUT_SEQ start with 1 increment by 1;

实体

@Entity 
@SequenceGenerator(
name = "CRD_ID", 
sequenceName = "RTDS_ADSINPUT_SEQ" 
initiaValue = 1, allocationSize = 1) 
public class XXX { 

    @Id 
    @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "CRD_ID") 
    private long id; 

    //getter, setter 
}

来源

2016-07-12 05:10:47 Byeon0gam

谢谢Byeon0gam。我不知道你是否看到了以前的建议答案。看起来我的问题与id验证属性有关。当我将它移除时，发生器工作正常，但当它存在时不起作用。所以我尝试了一种解决方法，因为我确实有一些实体已经使用id = 0保存到数据库中。 – Holden

我有一个问题。你想插入ID值为0的表？或者你想序列从0开始？嗯。您的错误：违反了唯一约束（RMS.COMMITMENT_REGISTER_DETAIL_PK）。你检查。 – Byeon0gam

我想插入序列中的下一个数字。 PK违规是因为表中已经有一个id = 0的行（不应该有）。当eclipselink.id-validation属性不存在时，JPA获取下一个序列号。当它出现时，它使用0并且不会获取下一个序列号。我不能让它不存在，因为有其他表使用id = 0，所以它们会单独失败。 – Holden

JPA序列生成器不工作

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