OAF - Pass parameters between pages and session

OAPageContext (called from UI client)
putSessionValue( )
removeSessionValue( )
getSessionValue( )

OAPageContext (called from UI client for encryption)
PutEncryptedParameter( )
GetDecryptedParameter( )

OAPageContext (called from UI client)
putTransactionValue( )
getTransactionValue( )
removeTransactionValue( )

OADBTransaction (called from server)
putValue( )
getValue( )
removeValue( )