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    <p>When server side state saving is used (which is default) than those two parameters can be used to configure maximum number of logical and actual views.</p> <p>Logical view is top level view which is created on every GET request (for example when you open page in new browser window or tab, entering address in address bar of browser, iframes...). Each logical view can have some number of associated actual views. Actual views are created as user navigate through your pages with standard JSF mechanisms (for example if you navigate to page returned from <code>action</code> methods in <code>commandButton</code>). Both queues of views use LRU algorithm to decide when view will be removed, and maximum number of those queues are limited by values of these two parameters.</p> <p>So, <code>com.sun.faces.numberOfViewsInSession</code> defines the maximum number of JSF views stored in the session for per logical view, and <code>com.sun.faces.numberOfLogicalViews</code> defines the maximum number of logical views to store per session.</p> <p>According to information you provided a suspect that configuration of <code>com.sun.faces.numberOfViewsInSession</code> solved your problem, but you must further investigate why is created so many views.</p> <p>Additional link:</p> <ul> <li><a href="https://wikis.oracle.com/display/GlassFish/JavaServerFacesRI#JavaServerFacesRI-WhatarethedifferencesbetweenServerandClientsidestatesavingandwhatarethebenefits%2Fdrawbacksofeach%3F" rel="nofollow">What are the differences between Server and Client side state saving and what are the benefits/drawbacks of each?</a></li> </ul>
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    1. COVery informative, thank you. Is there any consideration of "size" for the actual views? Because as far as I can tell the (GET/POST) actions undertaken to edit the large document are exactly the same as for a smaller document, the only difference is the size of said document.
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    2. COWell, for further analyze I must see more of your page and logic. One more idea, each jsf `h:form` is considered separate view (in terms of view state savings on server), so technically if you have 15 forms, one more updated form will fire `ViewExpiredException`
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    3. CODue to several reasons lost to history, the entire application is in a single form at the root. This means index.xhtml (which hosts the tree) has the root form and when you click you are redirected (via GET) to edit.xhtml which has a root form. There ajax is used to perform postbacks when you save.
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

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