Solved

Hibernate seq genration issue

Posted on 2009-07-12
7
397 Views
Last Modified: 2012-05-07
I am trying to instantiate an entity that is mapped to database through hibernate. Id of this entity is generated through seq.

I have instantiated this entity inside thread and trying to save it. Each time seq
in multithreded environemnt, it creates same id.

It seems that hibernate sequence generator is not thread safe. Can anyone help me out in finding a way to make it thread safe in my multithreaded java app.
0
Comment
Question by:rajeevy69
  • 4
  • 3
7 Comments
 
LVL 23

Assisted Solution

by:Ajay-Singh
Ajay-Singh earned 250 total points
ID: 24833943
Can you post the mapping file?
0
 

Author Comment

by:rajeevy69
ID: 24838996
Hii,
mapping file looks like this:

<hibernate-mapping>
       
    <class name="Employer" table="employers">
        <id name="id">
            <generator class="sequence">
                <param name="sequence">employer_id_seq</param>
            </generator>
        </id>
        <property name="name"/>
     <property name="country"/>

    </class>
</hibernate-mapping>
0
 
LVL 23

Assisted Solution

by:Ajay-Singh
Ajay-Singh earned 250 total points
ID: 24840542
Your mapping looks OK, but the behavior is weired. Are you
getting the same sequence all the time?
0
Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

 

Author Comment

by:rajeevy69
ID: 24840606
not always.

when accessing from different thread,this problem is happening. bu if i try from another instance it works fine.
0
 
LVL 23

Assisted Solution

by:Ajay-Singh
Ajay-Singh earned 250 total points
ID: 24840813
Are you sharing the session across threads?
0
 

Accepted Solution

by:
rajeevy69 earned 0 total points
ID: 24841273
yes.
0
 

Author Comment

by:rajeevy69
ID: 25502517
NA
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

For customizing the look of your lightweight component and making it look opaque like it was made of plastic.  This tip assumes your component to be of rectangular shape and completely opaque.   (CODE)
This was posted to the Netbeans forum a Feb, 2010 and I also sent it to Verisign. Who didn't help much in my struggles to get my application signed. ------------------------- Start The idea here is to target your cell phones with the correct…
Viewers learn about the “while” loop and how to utilize it correctly in Java. Additionally, viewers begin exploring how to include conditional statements within a while loop and avoid an endless loop. Define While Loop: Basic Example: Explanatio…
Viewers learn about the “for” loop and how it works in Java. By comparing it to the while loop learned before, viewers can make the transition easily. You will learn about the formatting of the for loop as we write a program that prints even numbers…

920 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

13 Experts available now in Live!

Get 1:1 Help Now