Error -Installing user interface update for SDL Tridion 2011SP1 - tridion

Question

I am installing user interface update for SDL Tridion 2011SP1.When I make below entry in the
cd_storage_conf.xml file
<Wrapper Name="SessionWrapper">
<Timeout>120000</Timeout>
<Storage Type="persistence" Id="db-session-staging" dialect="MSSQL"
Class="com.tridion.storage.persistence.JPADAOFactory">
<Pool Type="jdbc" Size="5" MonitorInterval="60"
IdleTimeout="120" CheckoutTimeout="120" />
<DataSource Class="com.microsoft.sqlserver.jdbc.SQLServerDataSource">
<Property Name="serverName" Value="XYZ" />
<Property Name="portNumber" Value="123" />
<Property Name="databaseName" Value="XYZ" />
<Property Name="user" Value="TridionBrokerUser" />
<Property Name="password" Value="xyz" />
</DataSource>
</Storage>
</Wrapper>
It is throwing below error.
NOTE: - Some time such error comes due to expiration of licence so I checked the licence file it is not expired anyway.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: Java.Lang.Throwable: Could not initialize class
com.tridion.storage.StorageManagerFactory
Some Java classes or interfaces could not be found or loaded
The most typical reasons for this problem are:
you forgot to configure a classpath
a jarfile, zipfile, or directory is missing from your classpath
you have a typo in one of your classpath entries
a jarfile required by one of your classes is missing from your classpath
a jarfile on your classpath is out-of-date and does not contain some new classes
============================================================
com.tridion.web.jsp.tag.BinaryLinkHandler
com.tridion.preview.web.BinaryContentFilter
com.tridion.web.jsp.ResponseWrapper
com.tridion.web.jsp.tag.TaxonomyHandler
com.tridion.webservices.odata.ODataPublicationMappingFilter
com.tridion.storage.StorageManagerFactory
com.tridion.web.jsp.JSPProcessor [Ljavax.servlet.http.Cookie;
com.tridion.marketingsolution.profilesync.Handler
com.tridion.webservices.odata.ODataContextListener
com.tridion.web.jsp.tag.ComponentPresentationHandler
com.tridion.web.jsp.tag.IncrementKeyHandler
com.tridion.web.jsp.tag.TargetGroupHandler
com.tridion.preview.web.PageContentFilter
com.tridion.web.jsp.tag.ConditionHandler
com.tridion.ambientdata.web.AmbientDataServletFilter
com.tridion.web.jsp.tag.ComponentLinkHandler
com.tridion.web.jsp.JSPXSLTProcessor
com.tridion.web.jsp.tag.ConditionsHandler
com.tridion.web.jsp.tag.DynamicComponentLinkHandler
com.tridion.web.jsp.tag.PageLinkHandler javax.servlet.http.Cookie
com.tridion.webservices.security.authentication.OAuth2AccessTokenHandler
javax.servlet.ServletResponse com.tridion.web.jsp.tag.LinkBaseHandler
javax.servlet.http.HttpServletResponse javax.servlet.ServletRequest
javax.servlet.http.HttpServletRequest
Please help me in this regard as soon as possible.

Answer 1

As the message states, you're missing some jars somewhere. For a complete picture of what's needed for each CD role, you can read the CD JAR file reference on LiveContent.

Answer 2

Are you sure you have the correct JRE installed? If you are using a 64bit deployer website you will need to install the 64bit JRE as well...
Alternatively you might have accidentally left the AppPool of the deployer website on 32bits (which would essentially give you the same issue as you would now need a 32bit JRE).