我们正在将我们的应用程序数据从Oracle迁移到PostgreSQL。PostgreSQL未释放表中的锁
环境细节:
的Java 1.8
的PostgreSQL 9.5企业版(XA数据源)
的Hibernate 4.3
WildFly 9.0.2
我们正在利用最新的PostgreSQL驱动(PostgreSQL的,1212年4月9日。 (https://jdbc.postgresql.org/download.html)
编辑:也试过edb-jdbc17.ja r驱动程序,它附带postgres企业数据库。还是一样的结果。
我们还在postgresql.conf
文件中将max_prepared_connections
设置为100。
下面给出的方法是采用一个对象并使用hibernate启动事务,然后提交事务。方法不会引发任何错误或异常。但是在数据库中,对象没有得到保存,应用程序正在获取导致死锁的表上的锁。 相同的代码与Oracle完美结合。从数据库
public void createObject(Object obj) throws CSTransactionException {
Session s = null;
Transaction t = null;
try {
try {
obj = performEncrytionDecryption(obj, true);
} catch (EncryptionException e) {
throw new CSObjectNotFoundException(e);
}
try{
obj = ObjectUpdater.trimObjectsStringFieldValues(obj);
}catch(Exception e){
throw new CSObjectNotFoundException(e);
}
s = HibernateSessionFactoryHelper.getAuditSession(sf);
t = s.beginTransaction();
s.save(obj);
t.commit();
s.flush();
auditLog.info("Creating the " + obj.getClass().getName().substring(obj.getClass().getName().lastIndexOf(".")+1) + " Object ");
}
catch (PropertyValueException pve)
{
try {
t.rollback();
} catch (Exception ex3) {
if (log.isDebugEnabled())
log.debug("Authorization|||createObject|Failure|Error in Rolling Back Transaction|" + ex3.getMessage());
}
if (log.isDebugEnabled())
log
.debug("Authorization|||createObject|Failure|Error in Rolling Back Transaction|" + pve.getMessage());
throw new CSTransactionException(
"An error occured in creating the " + StringUtilities.getClassName(obj.getClass().getName()) + ".\n" + " A null value was passed for a required attribute " + pve.getMessage().substring(pve.getMessage().indexOf(":")), pve);
}
catch (ConstraintViolationException cve)
{
try {
t.rollback();
} catch (Exception ex3) {
if (log.isDebugEnabled())
log.debug("Authorization|||createObject|Failure|Error in Rolling Back Transaction|" + ex3.getMessage());
}
if (log.isDebugEnabled())
log
.debug("Authorization|||createObject|Failure|Error in Rolling Back Transaction|" + cve.getMessage());
throw new CSTransactionException(
"An error occured in creating the " + StringUtilities.getClassName(obj.getClass().getName()) + ".\n" + " Duplicate entry was found in the database for the entered data" , cve);
}
catch (Exception ex) {
log.error(ex);
try {
t.rollback();
} catch (Exception ex3) {
if (log.isDebugEnabled())
log
.debug("Authorization|||createObject|Failure|Error in Rolling Back Transaction|"
+ ex3.getMessage());
}
if (log.isDebugEnabled())
log
.debug("Authorization|||createObject|Failure|Error in creating the "
+ obj.getClass().getName()
+ "|"
+ ex.getMessage());
throw new CSTransactionException(
"An error occured in creating the "
+ StringUtilities.getClassName(obj.getClass()
.getName()) + "\n" + ex.getMessage(), ex);
} finally {
try {
s.close();
} catch (Exception ex2) {
if (log.isDebugEnabled())
log
.debug("Authorization|||createObject|Failure|Error in Closing Session |"
+ ex2.getMessage());
}
}
if (log.isDebugEnabled())
log
.debug("Authorization|||createObject|Success|Successful in creating the "
+ obj.getClass().getName() + "|");
}
锁的信息:
我不是Hibernate专家,我知道关于Postgres的一些消息 - Postgres对交易结束时持有锁定。您的代码不会结束交易。这是非常关键的问题。 –
t.commit();将保存并结束交易。 – Maverick
寻找postgres - 记录所有语句或等待语句 - 也许休眠不会。表pg_stat_activity或log_min_duration_statement选项可以帮助您。 –