I am not able to connect oracle thru TOAD,but able login thru SQL*PLUS. this is after installing 9ias in my machine. (windows 2000). If i try to connect oracle thru toad then it gives the error TNS- ora-12541 listner error.
what i have to do, inorder to connect oracle thru TOAD.
When you installed 9ias you probably created second oracle_home?
Toad is maybe using another oracle_home.
Sometimes installer give you some Oracle Home Selector tool, try to find it in Start menu/Programs somewhere.
Otherwise you can look in regedit under LOCAL_MACHINE/SOFTWARE/ORACLE you have a key ORACLE_HOME which is probably set to new home of 9ias.
Try editing this key.