I dont have grant permission for DBMS_CRYPTO. Now to give grant permission i need to
connect sqlplus as sysdba
and then granted permission as :
grant execute on sys.dbms_crypto to myuser;
But when i tried to connect as sysdba then i am getting error as `ORA-1031: Insufficient Privileges While Connecting As SYSDBA`. I search on this issue and seen i have to set ORACLE_SID but dont know my oracle SID and how to set it correctly otherwise it might create problem to my oracle installation.