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org.hibernate.TransientObjectException: object references an unsaved transient instance - save the transient instance before flushing:
这主要是在ManyToOne级联操作时遇到,比如new了一个新对象，在未保存之前将它保存进了一个新new的对象（也即不是持久态）。
解决办法是在保存或更新之前把这个对象查出来（这样就是一个持久态）。
解决办法是将many-to-one的级联设为: cascade="save-update,persis ...
public final static Date addMonths(final Date date, final Integer noOfMonths) {
Calendar orgCal = GregorianCalendar.getInstance();
orgCal.setTime(date);
Calendar newCal = GregorianCalendar.getInstance();
newCal.setTime(date);
newCal.set(Calendar.DAY_OF_MONTH, 1);
int year = orgCal. ...
public final static boolean isValidDate(final String date, final String format) {
boolean result = false;
try{
Date d = toDate(date, format);
String s = DateFormatUtil.format(d, format);
result = s.equals(date);
} catch (Exception ex) {
}
return result;
}
publi ...
org.hibernate.StaleObjectStateException: Row was updated or deleted by another
transaction (or unsaved-value mapping was incorrect):
[com.shkco.adsr3.cbm.vo.CustomerAccountInfo#74225]
at org.hibernate.persister.entity.AbstractEntityPersister.check(AbstractEntityPersister.java:2523)
at org. ...
java.lang.ClassCastException: [Ljava.lang.Object; incompatible with com.shkco.adsr3.cbm.vo.ICustomerAccount
看到这错误都知道是数据类型转换不匹配，Object 与ICustomerAccount.
DAO 方法原始如下：
public List<ICustomerAccount> getListOfCustomerAccount(ISessionContext sessionContext, IClientCentricCustomer clientCen ...
The content of element type "class" must match "(meta*,subselect?,cache?,synchronize*,comment?,tuplizer*,(id|composite-id),discriminator?,natural-id?,(version|timestamp)?,(property|many-to-one|one-to-one|component|dynamic-component|properties|any|map|set|list|bag|idbag|array|primitiv ...
当Maven项目很大，或者你运行诸如 mvn site 这样的命令的时候，maven运行需要很大的内存，在默认配置下，就可能遇到java的堆溢出
exception:OutOfMemoryError
set
MAVEN_OPTS=-Xms256m -Xmx512m -XX:PermSize=256m -XX:MaxPermSize=384m
ANT_OPTS=-Xmx512m -XX:PermSize=128m -XX:MaxPermSize=256m
Windows #
Go into your Control Panel > System > Ad ...
Row was updated or deleted by another transaction (or unsaved-value mapping was incorrect)
当在进行操作时,当前version版本与DB中version版本不一致;
有其他用户对当前数据进行了操作。
Undefined Error: org.hibernate.HibernateException: identifier of an instance of
com.shkco.adsr3.staticdata.vo.ClientGroup was altered from 2 to null
List<IClientGroup> clientGroupList = clientGroupService.getAllClientGroup(sessionContext);
boolean clientGroupValidate = true;
if(cl ...
Caused by: org.hibernate.AssertionFailure: collection owner not associated with session
[13/01/16 11:14:47:779 CST] 00000127 SystemErr R Caused by: org.hibernate.AssertionFailure: collection owner not associated with session: com.shkco.adsr3.cbm.vo.SubAccount.authorizors
[13/01/16 11:14:47: ...
for(Iterator<IAddress> it=addSet.iterator();it.hasNext();){
IAddress address = it.next();
if(address.getId() != null){
Boolean flag = false;
for(IAddress addr : set){
if(addr.getId().equals(address.getId())){
flag = true;
break;
}
}
if(!flag){
it.remove() ...
查询约束类型
select distinct constraint_type fromdba_constraints;
Type Code
Type Description
Acts On Level
C
Check on a table
Column
O
Read Only on a view
Object
P
Primary Key
Object
R
Referential AKA Foreign Key
Column
...
SQL>set colsep' '; //-域输出分隔符
SQL>set newp none //设置查询出来的数据分多少页显示，如果需要连续的数据，中间不要出现空行就把newp设置为none，这样输出的数据行都是连续的，中间没有空行之类的
SQL>set echo off; //显示start启动的脚本中的每个sql命令，缺省为on
SQL> set echo on //设置运行命令是是否显示语句
SQL> set feedback on; //设置显示“已选择 ...
查询锁表的Session
select sess.sid,
sess.serial#,
lo.oracle_username,
lo.os_user_name,
ao.object_name,
lo.locked_mode
from v$locked_object lo,
dba_objects ao,
v$session sess
where ao.object_id = lo.object_id and lo.session_id = sess.sid;
--杀死进程 ...
Caused by: org.hibernate.MappingException: Repeated column in mapping for entity: com.shkco.adsr3.frontoffice.omos.vo.OSEquOrder column: EXT_SYS_TYPE_ID (should be mapped with insert="false" update="false")
出现这个问题， 一般都是不同的属性映射了相同的字段，所以在hibernate配置文件中找EXT_SYS_TYPE_ID 就可以了，结果这个 ...