How to manage separate OLTP and MIS/Reports Server

Dear All,
Due to large amount of data and heavy MIS queries, response from our database server is very slow. Users face problems of slow speed.
We want to separate our OLTP and MIS/Reporting.
What is the best scenario provided by Oracle to implement this strategy. We are using oracle 11gR1 on Linux server.
One thing to remember some reports require update information that is they has to show the latest data. However some MIS reports can be archived, like a procedure runs during off hours and insert data into tables periodically and MIS reports selects data from these tables.
Your expert comments are required.
Thanks, Imran

I also require some procedures that run on a scheduled time and generate records in different tables, so read only database instance wont help much. If you are saying that you need the reporting database to be updatable, a physical standby is out. A logical standby is also most likely out unless you are just creating new objects. If you want to modify existing objects (inserting, updating, or deleting rows in existing tables), logical standby would not be appropriate.
Do you want the reporting database to have the same data model as the OLTP database? Reporting databases often perform better with a different data model, but moving to a star or snowflake schema expands the scope of the project and increases complexity substantially. It also requires that existing queries be modified to hit the new schema which adds additional development time.
Justin

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