i need to upgrade an oracle 8i database on HP-Unix server to Oracle 11g on Linux, how is that possible? whether to upgrade it first to 10g linux and then to 11g ?
You can check this Doc Id, which give you the details about the version compatibility
Oracle Database Upgrade Path Reference List (Doc ID 730365.1)
How big is the database ? How much downtime can you afford ? One option is to use export/import
Moving Data Using Oracle Data Pump