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basics of connectivity - connect Oracle Database Server and easy connect from 10g

go to oracle installation directory,like C:\oracle\product\10.2.0\db_1\network\ADMIN\

check for listener.ora and tnsnames.ora file at DB server.
if there is IP/port change make sure to reflect same here.

if OS is windows : Net Manager tool can be run from:

windows > start > oracle entry in

to check what system level DB privilege have been granted:sqlplus /nolog
SQL>conn username/pwd
SQL> select * from session_privs;

using SQLPLUS login from sys or system user:

sqlplus /nolog
SQL> conn sys/pwd as sysdba
drop user username cascade;

grant connect,resource to username identified by pwd;

From 11g onward connect role has only the create session privilege.

then from cmd line:

imp username/pwd file=filename.dmp fromuser=scott touser=username log=impuser.log

Oracle easy connect feature from 10g onward:


sqlplus scott/tiger@


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