ORA-12560: TNS:protocol adapter error

From: Roger Li <pyli_at_tsmc.com.tw>
Date: Sun, 26 Dec 1999 22:01:37 -0800
Message-ID: <84576t$j14@netnews.hinet.net>

Hi,
When I installed Oracle 8i on PC, and I can connect DB from local using by
"sqlplus system/manager".

But after I restart this local machine, I can not connect DB using by
"sqlplus system/manager" forever. I alwyas met oracle error :
ORA-12560: TNS:protocol adapter error ..... I only can connect DB by connect string :
"sqlplus system/manager_at_o8test" (o8test is defined in tnsnames.ora)
Can anybody tell me why?? Do I need set some environemnt ??? (I had used Oracle Home selector to change Oracle Home, but it fail !!! )

Roger Li Received on Mon Dec 27 1999 - 00:01:37 CST