Database Software

Good Morning ,

How rman backup having different SCN ?

Rman backup is consistent backup  unlike hot backup.

In my case , some datafiles having different SCN's ,

Suppose no archive logs (deleted manually)

If i perform recovery , how rman can sync  different scn's ?

Please see HIGN SCN  column

RMAN> backup validate database;


Starting backup at 26-SEP-15
using channel ORA_DISK_1
channel ORA_DISK_1: starting compressed full datafile backup set
channel ORA_DISK_1: specifying datafile(s) in backup set


..
... 


List of Datafiles
=================
File Status Marked Corrupt Empty Blocks Blocks Examined High SCN
---- ------ -------------- ------------ --------------- ----------
1    OK     0              13623        218952          60292123
  File Name: /u02/app/oracle/oradata/orcl/system01.dbf
  Block Type Blocks Failing Blocks Processed
  ---------- -------------- ----------------
  Data       0              175372
  Index      0              14086
  Other      0              15799


File Status Marked Corrupt Empty Blocks Blocks Examined High SCN
---- ------ -------------- ------------ --------------- ----------
2    OK     0              21593        126728          60292106
  File Name: /u02/app/oracle/oradata/orcl/sysaux01.dbf
  Block Type Blocks Failing Blocks Processed
  ---------- -------------- ----------------
  Data       0              41535
  Index      0              28122
  Other      0              35470


File Status Marked Corrupt Empty Blocks Blocks Examined High SCN
---- ------ -------------- ------------ --------------- ----------
3    OK     0              19991        963656          60178764
  File Name: /u01/app/oracle/oradata/orcl/sda01.dbf
  Block Type Blocks Failing Blocks Processed
  ---------- -------------- ----------------
  Data       0              939356
  Index      0              0
  Other      0              4309


File Status Marked Corrupt Empty Blocks Blocks Examined High SCN
---- ------ -------------- ------------ --------------- ----------
7    OK     0              6267         6400            37958094
  File Name: /u02/app/oracle/oradata/orcl/tbs1_01.dbf
  Block Type Blocks Failing Blocks Processed
  ---------- -------------- ----------------
  Data       0              0
  Index      0              3
  Other      0              130


File Status Marked Corrupt Empty Blocks Blocks Examined High SCN
---- ------ -------------- ------------ --------------- ----------
8    OK     0              6273         6400            37957419
  File Name: /u02/app/oracle/oradata/orcl/tbs2_01.dbf
  Block Type Blocks Failing Blocks Processed
  ---------- -------------- ----------------
  Data       0              0
  Index      0              0
  Other      0              127


File Status Marked Corrupt Empty Blocks Blocks Examined High SCN
---- ------ -------------- ------------ --------------- ----------
9    OK     0              5            6400            60292118
  File Name: /u02/app/oracle/oradata/orcl/tbs3_01.dbf
  Block Type Blocks Failing Blocks Processed
  ---------- -------------- ----------------
  Data       0              5798
  Index      0              51
  Other      0              546
 ..
...

Thanks in advance.