Hi Reddy

The os is windows Nt 4.0.

At svrmgr it's ok. Set ORACLE_SID=tggg.
from here i can connect to tggg by svrmgr>!sqlplus system/manager.

but from start->programs->oracle for windows nt->sqlplus 3.3 i couldn't able to connect to tggg instead it is getting connected to orcl.

can u clarify me about this.

Thanks
Ravi