Querying the actual number of records for each table in an Oracle database

DECLARE CURSOR Tab_cursor is SELECT table_name from user_tables;   V_table_name User_tables.table_name%type;   V_num number; V_P1 number;   BEGIN Open tab_cursor;      Loop fetch tab_cursor into v_table_name;      Exit when Tab_cursor%notfound; Execute immediate ' SELECT COUNT (*) from ' | |      V_table_name into V_num; Dbms_output.put_line (V_table_name | | ' : ' ||    To_char (V_num));   End Loop; Close tab_cursor; End;