I installed oracle 8i on my xp machine. I was trying to install another program on my machine but it crashed it and after that happened, I noticed that Oracle was acting funny. I deleted it and re-installed it. I noticed that when I tried to run the migration tool, the instances for the old databases that was previously created the first time I installed 8i are being detected by oracle I installed the second time around. What do I do to get rid of the old instances. I've tried everything. I tried disabling them in service manager and I tried looking for them in the .ORA files. Please help! Thanks.