CannotAcquireLockException（Spring、Hibernate、MySQL）
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【中文标题】CannotAcquireLockException（Spring、Hibernate、MySQL）【英文标题】：CannotAcquireLockException (Spring, Hibernate, MySQL) 【发布时间】：2012-12-23 05:05:47 【问题描述】：我们的应用程序使用 Spring、Hibernate 和 mysql。但有时查询会产生CannotAcquireLockException，代码如下。
public Ledger[] storeOrUpdateLedgers(Ledger[] ledgers,int iClinicId) throws DataAccessException
List<Ledger> ledgerList = new ArrayList<Ledger>();
for(int i = 0; i < ledgers.length; i++)
ledgers[i].setiClinicId(iClinicId);
ledgerList.add(ledgers[i]);
for(int i = 0; i < ledgerList.size(); i++)
getHibernateTemplate().clear();
getHibernateTemplate().saveOrUpdate(ledgerList.get(i));
getHibernateTemplate().flush();
public class Ledger implements Serializable
private int iLedgerId;
private int iClinicId;
private int iPatientId;
private int iProviderId;
private int iVisitId;
private int iPaymentId;
private int iClaimId;
private int iProcedureId;
private String sDate;
private double dAmount;
private byte btType;
private String sDesc;
private byte btCurrParty;
private int iCurrPartyId;
private byte btRespParty;
private int iRespPartyId;
private boolean active;
private int iParentId;
private int iReasonId;
private String sDos;
private int iU_ID;
private String sEntryDate; // no mapping required
public int getiU_ID()
return iU_ID;
public void setiU_ID(int iUID)
iU_ID = iUID;
public int getiLedgerId()
return iLedgerId;
public void setiLedgerId(int iLedgerId)
this.iLedgerId = iLedgerId;
public int getiClinicId()
return iClinicId;
public void setiClinicId(int iClinicId)
this.iClinicId = iClinicId;
public int getiPatientId()
return iPatientId;
public void setiPatientId(int iPatientId)
this.iPatientId = iPatientId;
public int getiProviderId()
return iProviderId;
public void setiProviderId(int iProviderId)
this.iProviderId = iProviderId;
public int getiVisitId()
return iVisitId;
public void setiVisitId(int iVisitId)
this.iVisitId = iVisitId;
public int getiPaymentId()
return iPaymentId;
public void setiPaymentId(int iPaymentId)
this.iPaymentId = iPaymentId;
public int getiClaimId()
return iClaimId;
public void setiClaimId(int iClaimId)
this.iClaimId = iClaimId;
public int getiProcedureId()
return iProcedureId;
public void setiProcedureId(int iProcedureId)
this.iProcedureId = iProcedureId;
public String getsDate()
return sDate;
public void setsDate(String sDate)
this.sDate = sDate;
public double getdAmount()
return dAmount;
public void setdAmount(double dAmount)
this.dAmount = dAmount;
public byte getbtType()
return btType;
public void setbtType(byte btType)
this.btType = btType;
public String getsDesc()
return sDesc;
public void setsDesc(String sDesc)
this.sDesc = sDesc;
public byte getbtCurrParty()
return btCurrParty;
public void setbtCurrParty(byte btCurrParty)
this.btCurrParty = btCurrParty;
public int getiCurrPartyId()
return iCurrPartyId;
public void setiCurrPartyId(int iCurrPartyId)
this.iCurrPartyId = iCurrPartyId;
public byte getbtRespParty()
return btRespParty;
public void setbtRespParty(byte btRespParty)
this.btRespParty = btRespParty;
public int getiRespPartyId()
return iRespPartyId;
public void setiRespPartyId(int iRespPartyId)
this.iRespPartyId = iRespPartyId;
public boolean isActive()
return active;
public void setActive(boolean active)
this.active = active;
public int getiParentId()
return iParentId;
public void setiParentId(int iParentId)
this.iParentId = iParentId;
public int getiReasonId()
return iReasonId;
public void setiReasonId(int iReasonId)
this.iReasonId = iReasonId;
public String getsDos()
return sDos;
public void setsDos(String sDos)
this.sDos = sDos;
public String getsEntryDate()
return sEntryDate;
public void setsEntryDate(String sEntryDate)
this.sEntryDate = sEntryDate;
休眠映射：
<class name="com.iris.allofactor.data.vo.Ledger" table="LEDGER">
<id name="iLedgerId" column="LEDGER_ID" unsaved-value="0">
<generator class="native"/>
</id>
<property name="iClinicId" column="CLINIC_ID"></property>
<property name="iPatientId" column="PATIENT_ID"></property>
<property name="iProviderId" column="PROVIDER_ID"></property>
<property name="iVisitId" column="VISIT_ID"></property>
<property name="iPaymentId" column="PAYMENT_ID"></property>
<property name="iClaimId" column="CLAIM_ID"></property>
<property name="iProcedureId" column="PROCEDURE_ID"></property>
<property name="sDate" column="DATE"></property>
<property name="dAmount" column="AMOUNT"></property>
<property name="btType" column="TYPE"></property>
<property name="sDesc" column="DESCRIPTION"></property>
<property name="btCurrParty" column="CURR_PARTY"></property>
<property name="iCurrPartyId" column="CURR_PARTY_ID"></property>
<property name="btRespParty" column="RESP_PARTY"></property>
<property name="iRespPartyId" column="RESP_PARTY_ID"></property>
<property name="active" column="ACTIVE"></property>
<property name="iParentId" column="PARENT_ID"></property>
<property name="iReasonId" column="REASON_ID"></property>
<property name="sDos" column="DOS"></property>
<property name="iU_ID" column="USER_ID"></property>
</class>
堆栈跟踪如下：
at org.springframework.jdbc.support.SQLErrorCodeSQLExceptionTranslator.doTranslate(SQLErrorCodeSQLExceptionTranslator.java:244)
at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:72)
at org.springframework.orm.hibernate3.HibernateAccessor.convertJdbcAccessException(HibernateAccessor.java:424)
at org.springframework.orm.hibernate3.HibernateAccessor.convertHibernateAccessException(HibernateAccessor.java:410)
at org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:424)
at org.springframework.orm.hibernate3.HibernateTemplate.executeWithNativeSession(HibernateTemplate.java:374)
at org.springframework.orm.hibernate3.HibernateTemplate.flush(HibernateTemplate.java:890)
at com.iris.allofactor.data.dao.hibernate.HibernateLedgerDao.storeOrUpdateLedgers(HibernateLedgerDao.java:97)
at com.iris.allofactor.data.dao.impl.LedgerAuditBODaoImpl.storeOrUpdateLedgers(LedgerAuditBODaoImpl.java:64)
at com.iris.allofactor.data.dao.impl.ChargesDaoImpl.storeOrUpdateCharges(ChargesDaoImpl.java:844)
at com.iris.allofactor.data.dao.impl.ClaimEncounterBODaoImpl.addorEditClaimWhileClaimIdAndVisitIdIsPresent(ClaimEncounterBODaoImpl.java:1072)
at com.iris.allofactor.data.dao.impl.ClaimEncounterBODaoImpl.storeOrUpdateClaim(ClaimEncounterBODaoImpl.java:819)
at com.iris.allofactor.data.dao.facade.DaoFacadeImpl.storeOrUpdateClaim(DaoFacadeImpl.java:1915)
at sun.reflect.GeneratedMethodAccessor2549.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:106)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
at $Proxy2.storeOrUpdateClaim(Unknown Source)
at com.iris.allofactor.services.impl.ClaimServiceImpl.addorEditClaim(ClaimServiceImpl.java:447)
at com.iris.allofactor.services.soap.impl.ClaimWebServiceImpl.addorEditClaim(ClaimWebServiceImpl.java:337)
at sun.reflect.GeneratedMethodAccessor2548.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.axis.providers.java.RPCProvider.invokeMethod(RPCProvider.java:397)
at org.apache.axis.providers.java.RPCProvider.processMessage(RPCProvider.java:186)
at org.apache.axis.providers.java.JavaProvider.invoke(JavaProvider.java:323)
at org.apache.axis.strategies.InvocationStrategy.visit(InvocationStrategy.java:32)
at org.apache.axis.SimpleChain.doVisiting(SimpleChain.java:118)
at org.apache.axis.SimpleChain.invoke(SimpleChain.java:83)
at org.apache.axis.handlers.soap.SOAPService.invoke(SOAPService.java:453)
at org.apache.axis.server.AxisServer.invoke(AxisServer.java:281)
at org.apache.axis.transport.http.AxisServlet.doPost(AxisServlet.java:699)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
at org.apache.axis.transport.http.AxisServletBase.service(AxisServletBase.java:327)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:852)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Thread.java:619)
它反复产生这个异常，我认为我的方法有问题。
【问题讨论】：
【参考方案1】：这是一个明确的死锁情况。这与 MySQL 错误有关，而不是与您的类的 Hibernate 问题有关。首先让我们回顾一下死锁的定义：
死锁是两个或多个相互竞争的动作同时发生的情况。 每个人都在等待另一个人完成，因此从来没有。
有关更多信息，请参阅此页面：http://en.wikipedia.org/wiki/Deadlock
你如何处理这种情况。好吧，您需要阅读以下文章：Deadlocks in InnoDB。它包含您需要的大部分信息。这篇文章详细解释了如何跟踪和处理死锁，这是必读的。
基本上您需要根据以上信息执行以下步骤：
-
创建 MySQL 跟踪：跟踪 MySQL 服务器上正在运行的所有查询。
获取死锁跟踪信息
将死锁跟踪和 MySQL 跟踪相互匹配以确定死锁的原因。
关于 InnoDB 的文章也有一个补救措施列表，所以我不打算在这里重复它们。请记住 死锁 不是致命错误，您只需要处理它。所以可能会捕获异常并重试事务。还要确保由 Hibernate 生成的查询是最佳的，因为它们可以使用 indexes 等等。您可以尝试的另一件事是 batching Hibernate 上的事务和批量执行。
我相信通过上面的两个链接，您将能够处理该问题，并且您自己解决此问题将是宝贵的经验。如果您发现任何特定项目有问题，请将其添加到问题中，让我们来处理。
【讨论】：
【参考方案2】：我想知道您的问题是否与此线程中讨论的问题相似：Deadlock problems with Hibernate/Spring/MS-SQL。这个特定问题的根本原因是您有一个线程对数据库执行查找/选择，而另一个线程正在尝试对数据库执行删除/插入。线程中提供了 2 个解决方案。
第一个优化了查找和删除代码，使其成为一个SQL 命令而不是两个。
# sql sudo code
# original query
find me this row where this=that
delete this row
# better query
delete this row where this=that
第二个推荐的解决方案是在 WHERE 子句中使用的 COLUMNS 上创建一个索引，以便数据库不再锁定 ROW，而是现在锁定索引的键。
【讨论】：
【参考方案3】：MySQL 列表中可能存在未完成的会话。它可能仍在运行。因为程序员在您的应用程序中的错误或使用数据库的程序员。
例如，您启动了一个会话，但由于错误，该进程卡住而没有回滚。 **这种情况很少发生。
请手动删除所有会话
获取所有会话
SHOW FULL PROCESSLIST;
然后通过 id 杀死他们
KILL 192;
例子。
mysql> SHOW PROCESSLIST;
+-----+------+-----------------+------+---------+------+-------+---------------+
| Id | User | Host | db | Command | Time | State | Info |
+-----+------+-----------------+------+---------+------+-------+----------------+
| 143 | root | localhost:61179 | cds | Query | 0 | init | SHOW PROCESSLIST |
| 192 | root | localhost:53793 | cds | Sleep | 4 | | NULL |
+-----+------+-----------------+------+---------+------+-------+----------------+
2 rows in set (0.00 sec)
mysql> KILL 192;
Query OK, 0 rows affected (0.00 sec)
【讨论】：
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