Need a Query to find whether the database needs any media recovery...

Question

Hi,
I am at the mount stage of a database and yet be opened.at this stage any Query is available or any other way is there to find whether the database needs any media recovery or Instance recovery..?
my objective is before opening the database i need to make sure it is consistent or inconsistent and any form of recovery is needed..
thanks &regards,
Ragunath
Edited by: ragu.dba.in on Mar 6, 2013 12:57 AM

Answer 1

Hi Ragunath,
Use these queries , SCN should be consistent .. no fuzzy files, check for recovery of files in v$recover_file .. pass sufficient archives & fulfill the checks before open reset-logs
set line 900
set pages 900
set echo on
alter session set nls_date_format='dd-mon-yyyy hh24:mi:ss';
set numwidth 13
col CHECKPOINT_CHANGE# for 9999999999999999
col CHANGE# for 9999999999999999
column error format a10
column member format a60
show parameter db_recover
select * from v$recover_file;
select file#, status from v$datafile;
select file#, checkpoint_change#, checkpoint_time, error from v$datafile_header;
select distinct status from v$backup;
select distinct  checkpoint_change#  from v$datafile_header;
select hxfil file_id, fhscn scn, fhthr thread, fhrba_seq sequence, fhsta status from x$kcvfh;
select distinct fhscn from x$kcvfh;
select hxfil file_id, fhtnm tablespace_name from x$kcvfh;
##### Fuzzy Check ####
alter session set nls_date_format = 'DD-MON-YYYY HH24:MI:SS';
set feedback on
set heading on
set pagesize 1000
set linesize 175
column checkpoint_change# format 999999999999999999999
select status, checkpoint_change#, fuzzy,
to_char(checkpoint_time, 'DD-MON-YYYY HH24:MI:SS') as checkpoint_time,
count(*)
from v$datafile_header
group by status, checkpoint_change#, fuzzy, checkpoint_time
order by status, checkpoint_change#, fuzzy, checkpoint_time;Thanks,
Ajay More
http://www.moreajays.com