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This topic is regarding sessions in the IS and the properties relevant for enabling session persistence for these sessions. This is particularly useful when the remember me option is selected when logging into either the service provider or the WSO2 Identity Server.

The following configuration found in the <IS_HOME>/repository/conf/identity/identity.xml file, under the the Server and JDBCPersistenceManager elements is used to enable session persistence. 

 <SessionDataPersist>
     <Enable>true</Enable>
     <Temporary>false</Temporary>
     <PoolSize>100</PoolSize>
     <SessionDataCleanUp>
         <Enable>true</Enable>
         <CleanUpTimeout>20160</CleanUpTimeout>
         <CleanUpPeriod>1140</CleanUpPeriod>
     </SessionDataCleanUp>
     <OperationDataCleanUp>
         <Enable>true</Enable>
         <CleanUpPeriod>720</CleanUpPeriod>
     </OperationDataCleanUp>
</SessionDataPersist>

The following table describes the elements of the configurations mentioned above.

Configuration elementDescription

Enable

This enables the persistence of session data. Therefore, this must be configured to true if you wish to enable session persistence.

Temporary

Setting this to true enables persistence of temporary caches that are created within an authentication request.

PoolSizeTo improve performance, OAuth2 access tokens are persisted asynchronously in the database using a thread pool. 
This value refers to the number of threads in that thread pool.

SessionDataCleanUp

This section of the configuration is related to the cleaning up of session data.

Enable

Selecting true here enables the cleanup task and ensures that it starts running.

CleanUpTimeOut

This is the timeout value (in minutes) of the session data that is removed by the cleanup task. The default value is 2 weeks.

CleanUpPeriod

This is the time period (in minutes) that the cleanup task would run. The default value is 1 day.

OperationDataCleanUpThis section of the configuration is related to the cleaning up of operation data.

Note: To work with Single Sign-On you must have session persistence enabled.

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