Database Install/Upgrade/Opatch (MOSC)

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Error while starting sqlplus in oracle 11g client: TNS:protocol adapter error

edited Feb 20, 2018 9:30AM in Database Install/Upgrade/Opatch (MOSC) 5 commentsAnswered

Hi,

I have downloaded oracle 11g client on windows 10 OS.

I am not sure how to connect to sqlplus or sql developer?

I tried using scott/tiger, sys. sysadmin etc....but all in vain. getting error:

SQL> connect system

Enter password:

ERROR:

ORA-12560: TNS:protocol adapter error

Also,  am not sure if I need to install anything else(oracle database) to connect to oracle?

just want some sample database connectivity for ex: select sysdate from dual;

Kindly help.

Thanks.

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