Edit the parameter initialization file. Log_archieve_start =true -turn it on Log_archieve_dest=c:/oracle/ora81/archieve -location log_archieve_format="ARCH%S.LOG" - name format for archieve file . %S for log sequence number .
Sol>alter table (name of parent table) use primary key data base (child table);
I have an excel sheet to be upload on oracle and so that data can be access with SQL commands. Please suggest some opinions...