ORA-01547、ORA-01194、ORA-01110

RDBMS 11.2.0.4 RAC

When restoring the database on a different machine ,restore normal ,recover When , Soon it was over . Tips ORA-01547、ORA-01194、ORA-01110 error . From the error prompt , Archive log does not exist .

starting media recovery

Oracle Error: 
ORA-01547: warning: RECOVER succeeded but OPEN RESETLOGS would get error below
ORA-01194: file 1 needs more recovery to be consistent
ORA-01110: data file 1: '+DATA/abcd/datafile/system.502.1108624865'

released channel: c1
released channel: c2
released channel: c3
released channel: c4
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of recover command at 06/29/2022 18:22:55
RMAN-06053: unable to perform media recovery because of missing log
RMAN-06025: no backup of archived log for thread 2 with sequence 125966 and starting SCN of 6234223614488 found to restore
RMAN-06025: no backup of archived log for thread 2 with sequence 125965 and starting SCN of 6234223488894 found to restore
RMAN-06025: no backup of archived log for thread 2 with sequence 125964 and starting SCN of 6234218899569 found to restore
RMAN-06025: no backup of archived log for thread 2 with sequence 125963 and starting SCN of 6234214130922 found to restore
RMAN-06025: no backup of archived log for thread 1 with sequence 137219 and starting SCN of 6234221221375 found to restore
RMAN-06025: no backup of archived log for thread 1 with sequence 137218 and starting SCN of 6234214130457 found to restore

Recovery Manager complete.

doubt ：

1 These missing archives , Are the last few archives , According to the truth , It should be done by filing with a smaller serial number first recover, Finally, it will be found that there are no such missing archives , How did it end in a flash . Don't oracle Missing archive detected , No recovery , It doesn't make sense ？

2 Why did it flash by ？ Obviously, there is a backup of the archive , With backup sets .

3 Is it bug？mos There are cases on , Only said the solution , I didn't say whether it was bug.

resolvent ： Reference resources MOS file , Did an incomplete recovery . That is to find that scn Start , The data are consistent . Finally, I made an incomplete recovery .

Reference documents ：Open Database failed - DATAFILE NEEDS MORE RECOVERY TO BE CONSISTENT ORA-1194 ORA-1547 ORA-1110 (Doc ID 1528788.1)

In the website , Refer to the following , Do inconsistent recovery （ABSSCN = Absolute SCN ）

The following query will show you the SCN to which we must at least recover to, to get all datafiles consistent.

SQL> select  min(FHSCN) "LOW FILEHDR SCN"
           , max(FHSCN) "MAX FILEHDR SCN"
           , max(FHAFS) "Min PITR ABSSCN"
       from X$KCVFH ;

LOW FILEHDR SCN  MAX FILEHDR SCN  Min PITR ABSSCN
---------------- ---------------- ----------------
2446300          2472049          0


-- Example output explained:
--
-- "LOW FILEHDR SCN"  - this is the SCN at which recovery process starts
-- "MAX FILEHDR SCN"  - this is the SCN we must recover to to get all datafiles consistent
--
--   IF    "Min PITR ABSSCN"  != 0 AND  >  "MAX FILEHDR SCN"
--   THEN  "Min PITR ABSSCN"  is the SCN we must recover to to get all datafiles consistent
 

The results found in your own environment  

[email protected]>select  min(FHSCN) "LOW FILEHDR SCN"
  2             , max(FHSCN) "MAX FILEHDR SCN"
  3             , max(FHAFS) "Min PITR ABSSCN"
  4          from X$KCVFH ;

LOW FILEHDR SCN                  MAX FILEHDR SCN                  Min PITR ABSSCN
-------------------------------- -------------------------------- --------------------------------
6234167427056                    6234207627035                    6234213805895

[email protected]>

It can be seen that it is quite consistent with the official statement . Use incomplete recovery .

recover database until scn 6234213805895;	 --  It's this  

Last ,open resetlogs Open library .

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