LDAP is mandatory when you are going to implement LDAP Authentication then it is required.
What purpose have you create session variable? --- LDAP Authentication (Security) if yes it is required.
Hope this help's
The purpose of creating session variable.
i created one session variable and used that variable in logical column in that logical column i used ago function and that column i am using in dashboard for compare the this year revenue and previous year revenue.its working in obiee10g.
same this i am trying to create in obiee11g.