Query to find relevant Table name

Question

Hi i need a SQL query which should return me relevant table names. i.e. if there is table 'EMP' , then query should give table names with below result:
EMP
EMP_1
EMP_2
EMP_3
EMP_4
i.e. All tables which is starting with EMP (No Hardcoding of table, It should be dynamic way).I know we can achieve through SELECT * FROM USER_OBJECTS WHERE OBJECT_NAME LIKE 'EMP%'.
But here object_name i will passing dynamically.
Actually my main purpose is to create backup tables i.e. EMP is main table and EMP_1,EMP_2,EMP_3 .. EMP_100 is backup table.Now whenever i am making the any changes in EMP table, then i should take the backup of exiting EMP table and backup data should go to EMP_101 (as last table with sequence is EMP_100).
Any idea in SQL , PL/SQL i would appreciate .
Thanks

Answer 1

here is a way:
set serveroutput on
declare
tab_name varchar2(30) := 'EMP';
new_tab_name varchar2(30);
begin
  for i in (
        select * from (
            select t.*,
                    row_number() over(order by t.table_name desc) as row_nr ,
                    min(table_name) over () as originiall_table
                    from all_tables t
            where table_name like tab_name||'%'
        ) where row_nr = 1
  ) loop
    new_tab_name := substr(i.table_name, 1, instr(i.table_name, '_') - 1 )
                    ||'_'
                    || (TO_NUMBER(substr(i.table_name, instr(i.table_name, '_') + 1 )) + 1 ) ;
    execute immediate 'create table '||new_tab_name||' as select * from '||i.originiall_table;   
  end loop;
end;but why do you want to keep too many copies of tables in db?
anytime you will get problems with tablespaces.