ORA - 07217 error

Hi,

I am trying to connect to oracle database instance using sql plus on HP-UX machine. But after giving username & password it gives following error -

ORA - 07217 error - sltln env variable not found

can someone help to understand whats this error :confused:

thankx
Sonal

your ORACLE_SID isnt set

either set it or use @db_name

Thanks so much :)
I had set the oracle_sid it works fine for me now.