If your view state is affected by a large component tree, try reducing the number of components your page depends on. Use filters and pagination to reduce data requiring state. Declare instance variables with a transient keyword when the variable is only useful for the current request.
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How to reduce View State:
- Use the transient keyword: The simplest and the most logical way is to keep the size of the VF page as small as possible. ...
- Refine your SOQL: Reduce the number of records displayed on a page by refining SOQL.
What is view state error in Salesforce?
View State: As the name suggests, it is an error of View State. Maximum view state size limit (135KB) exceeded is the error message pertaining to View State error and here follows a brief detailing of the issue. View state holds the state/size of the visual force page that includes the components, field values, and controller state.
How to minimize the VIEWSTATE in Salesforce apex?
The use of transient keyword will allow you to minimize the Viewstate. Though, technically there is no known way to calculate Viewstate in visualforce via Salesforce Apex API, we just need to code within the best practices boundaries and that usually make sure that Viewstate issues never arise, Best Practices for view state.
Why are my view state values private in Salesforce?
define private if they are not used on visualforce page. If you notice that a large percentage of your view state comes from objects used in controllers or controller extensions, consider refining your SOQL calls to return only data that's relevant to the Visualforce page.
What affects the view state of a Visualforce page?
A large or poorly written controller can slow down a VisualForce page and load up the View State. The things which primarily affect the View State from a VF standpoint are going to be the DOM component tree and it's associated state. The heaviest impact on those will be the following Apex components:
How do I get rid of view state error?
In order to reduce the view state, make use of the following:"Transient" keyword - to declare instance variables that can't be saved, and shouldn't be transmitted as part of the view state for a VF page. ... Minimize the number of forms i.e
How do I enable view state in salesforce?
To enable the View State tab:From your personal settings, enter Advanced User Details in the Quick Find box, then select Advanced User Details. No results? ... Click Edit.Select the Development Mode checkbox if it isn't selected.Select the Show View State in Development Mode checkbox.Click Save.
How do I fix maximum view state size limit 170kb exceeded?
In order to avoid this error, minimize your pages' view state. You can optimize your Apex controller code and remove any superfluous Visualforce components used.
What is view state in visual force?
View state holds the state of Visual force page. The view state of a web page is composed of all the data that's necessary to maintain the state of the controller during server requests (like sending or receiving data).
What is view state error in Salesforce?
If the size of a particular page exceeds 135kb, the page will throw a view state error. A screenshot showing a view state error in salesforce. To check the view state of a visual force page you have to make sure that Show View State in Development Mode checkbox in the User Layout is checked.
What is the difference between Actionsupport and Actionfunction?
Action function can call the controller method from java script. 2. Action support adds AJAX support to another visualforce component and then call the controller method. Here action support adds AJAX to output panel, so once you click on output panel controller method will be called.
What is heap size limit in Salesforce?
The Heap size truly depends on the type of transaction, Salesforce provides a heap size limit of 6MB for the synchronous transaction and 12 MB for the asynchronous transaction. Whenever too much data is stored during processing an error occurs prompting Apex heap size too large.
What is the maximum size of a Visualforce page?
Visualforce LimitsLimitValueMaximum view state size in a Visualforce page170KBMaximum size of a Visualforce email template1 MBMaximum file size for a file uploaded using a Visualforce page10 MBMaximum size of HTML response before rendering, when Visualforce page is rendered as PDFLess than 15 MB16 more rows
What is transient variable in Salesforce?
The value of transient variable is only transferred from controller to visualforce page but not as part of view state. As the value is not part of view state, the changed value of that variable is not transferred back from visualforce page to controller when a new request is made by clicking a button or link.
How do I use Action regions in Salesforce?
actionRegion provides an area of a Visualforce page that decides and separates which components should be processed by the force.com server when an AJAX request is generated. Only the components which are inside actionregion component are processed by server, so it increases visualforce page performance.
What is Apex sharing in Salesforce?
Apex managed sharing enables developers to programmatically manipulate sharing to support their application's behavior through Apex or the SOAP API. This type of sharing is similar to Force.com managed sharing. Only users with “Modify All Data” permission can add or change Apex managed sharing on a record.
How many records can we display in Visualforce page?
It allows the developer to configure list view to display up to 100 records at a time, but by default it returns 20 records on the page.
What is view state in Salesforce?
View State is a technique Salesforce uses to maintain the current state of the page and the data that was queried between the user requesting things from the server and sending any changes back to the server.If the view state gets too large problems can begin to occur. The view state is an encrypted field that contains the following data: 1 All of the non-transient data that is in the associated controller and any associated controller extensions 2 State related to all of the form elements and components that are used on the page. 3 Finally there’s some sort of internal state that Salesforce doesn’t provide much information about.
Why is view state important?
The reason that the view state is so important is that because every time the page is re-rendered for some reason or that a request has been sent to the server that we need to send and receive the view state. As you can imagine, a large view state being constantly transmitted would add a lot of overhead.
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