DB = 8.1.7
OS = 2000 pro
Everything is on my laptop

1- I have installed 8.1.7 created the DB and configured OEM it worked fine, Then I shut down my machine, then rebooted I started the Tnslistner it starts fine, I started the ora8i service it starts just fine but when I tried to connect to DB from DOS or SQL*PLUS i get following error

ORA-01034 Oracle not avaiable
ORA-27101 shared memory realm does not exist

2- I have cleand out the DB re-created it, it worked fine then I shut down the machine rebooted same problem accured.

3- Deleted DB that I created, un-installed Oracle software, reinstalled Oracle Software that created pre-configured DB, it worked fine, but again when I shut down and re boot machine I get same error.

What could be the problem here?


Thanks in Advance