You can install 2 Oracle instances then create same named schema under each instance. You will take some time to configure eith instances and reset all client connection related files with specified instance name.
The configuration needs some experience, I can not post such solutiion in s simplied text here. Go Oracle online help, I remembered there was some solution for 8.16.
Install 2 Oracle instances
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• 回複:Install 2 Oracle instances -ylpa- ♀ (135 bytes) () 11/26/2003 postreply 06:32:00
• 回複:install 2 Oracle instances -DBDB- ♀ (576 bytes) () 11/26/2003 postreply 09:04:00