Problems Installing SQL PLUS

  suburban train 22:14 18 Nov 2003

Dear All

I am trying to install SQL plus but I cant login can anyone help?

I'll guide you through the installation

>I chose to intsall Oracle9i database
>I then chose the Standard edition
>I chose software only as I have only 128MB of RAM
my port number is 2030 for Oracle Services for Mircrosoft Transaction Server

then I am informed oracle9i database was succesful

Here is the confusing bit

I try to add a database manually to the tree

hostname is abol
Port number is 1521
SID test
net service name is test_abol

I load SQL plus enter the username SYS and I chnaged the password

I am presented with USERNAME ,password and Host string

I have tryed typing all the diff port numbers and abol and test and i get an error stating:

ORA-12560: TNS:Protocol adapter error

what does this mean i how can i solve the problem so i can start using SQL plus

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