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It simply means that you should only have one instance of SessionFactory, and then use this instance to create Session objects. Since SessionFactory's <a href="http://docs.jboss.org/hibernate/core/3.5/api/org/hibernate/SessionFactory.html" rel="ugc">internal state is immutable</a> (and thus inherently thread safe), many threads can access it simultaneously and ask for a Session object without problem.
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It simply means that you should only have one instance of SessionFactory, and then use this instance to create Session objects. Since SessionFactory's internal state is immutable [http://docs.jboss.org/hibernate/core/3.5/api/org/hibernate/SessionFactory.html] (and thus inherently thread safe), many threads can access it simultaneously and ask for a Session object without problem.

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if something is threadsadte do we need to create ourselves single instance(does not meaning of threadsafe takes care of that by itself)<br />
<br />
&gt;&gt;&gt;Since SessionFactory's internal state is immutable (and thus inherently thread safe), <br />
<br />
<br />
can you please advise on Internal state immutable and thread safety and single instance relationship. I am not cear on this.
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if something is threadsadte do we need to create ourselves single instance(does not meaning of threadsafe takes care of that by itself)

>>>Since SessionFactory's internal state is immutable (and thus inherently thread safe),


can you please advise on Internal state immutable and thread safety and single instance relationship. I am not cear on this.

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<div class="content wysiwyg-content">
hI,<br />
<br />
<br />
I am reading as below<br />
<br />

<blockquote>
 SessionFactory in hibernate are thread safe.<br />
So it is recommended to have only copy of &nbsp;Sessionfactory.<br />
Whereas Hibernate Session are not thread safe and Session can have many instances.<br />
To achieve this use of Singleton by creating static instance of Sessionfactory and then create static method returning SessionFactory instace.<br />
<br />

</blockquote>
<br />
I am not clear on above sentences. what exactly it means. What is the role of singleton and static in hibernate.<br />
<br />
Please advise <br />
Any links resources ideas highly appreciated. Thanks in advance
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hI,


I am reading as below

 SessionFactory in hibernate are thread safe.
So it is recommended to have only copy of  Sessionfactory.
Whereas Hibernate Session are not thread safe and Session can have many instances.
To achieve this use of Singleton by creating static instance of Sessionfactory and then create static method returning SessionFactory instace.



I am not clear on above sentences. what exactly it means. What is the role of singleton and static in hibernate.

Please advise 
Any links resources ideas highly appreciated. Thanks in advance

hibernate singleton static instance

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