Redo logfile addition in oracle rac 12c

REDO LOGFILE ADD ACTIVITY IN RAC 11gR2:
```````````````````````````````````````
first check logfiles:
```````````````````
query:
set echo off
set feedback off
set linesize 120
set pagesize 35
set trim on
set trims on
set lines 120
col group# format 999
col thread# format 999
col member format a70 wrap
col status format a10
col archived format a10
col fsize format 999 heading "Size (MB)"
select l.group#, l.thread#,
f.member,
l.archived,
l.status,
(bytes/1024/1024) fsize
from
v$log l, v$logfile f
where f.group# = l.group#
order by 1,2
/
GROUP# THREAD# MEMBER
ARCHIVED STATUS Size (MB)
------ -------
----------------------------------------------------------------------
---------- ---------- ---------
1 1 +DATA/RAC/ONLINELOG/group_1.281.961580081
YES INACTIVE 50
1 1 +FRA/RAC/ONLINELOG/group_1.263.961580087
YES INACTIVE 50
NO CURRENT 50
NO CURRENT 50
YES INACTIVE 50
YES INACTIVE 50
NO CURRENT 50
NO CURRENT 50
We will add new logfiles in thread 1 and 2 of size 100M.
So we can observe here thread 1 having two groups i.e. group 1&2, similarly
thread 2 having two groups i.e. group 3&4 of logfile
size 50M.
Now we'll add two new groups for thread 1 ( group 5&6) & for thread 2 (group

7&8) respectively.
alter database add logfile thread 1 group 5 ('+DATA','+FRA') size 100M;
After that please check logfiles being added or not:
f.member,
l.archived,
l.status,
from
order by 1,2
/
------ -------
----------------------------------------------------------------------
---------- ---------- ---------
YES INACTIVE 50
YES INACTIVE 50
NO CURRENT 50
NO CURRENT 50
YES INACTIVE 50
YES INACTIVE 50
NO CURRENT 50
NO CURRENT 50
YES UNUSED 100
YES UNUSED 100
YES UNUSED 100
YES UNUSED 100
YES UNUSED 100
YES UNUSED 100
YES UNUSED 100
YES UNUSED 100
Elapsed: 00:00:09.08
Now we will login both the nodes with different putty session and will run "
alter system swith logfile; "
until thread 1 & 2 groups get switched and the 50M logfile get inactive

respectively.
alter system switch logfile;
select l.group#, l.thread#, f.member, l.archived, l.status, (bytes/1024/1024)
fsize
from v$log l, v$logfile f where f.group# = l.group#
and l.thread#=1 ;
alter system switch logfile;
select l.group#, l.thread#, f.member, l.archived, l.status, (bytes/1024/1024)
fsize
and l.thread#=2 ;
Then we can drop inactive groups for thread 1 & 2:
from instance 1:
alter database drop logfile group 1;
from instance 2:
( Note please check properly before dropping logfile i.e. the status must be
"INACTIVE" for both the logfiles in groups )
Here i have dropped instance 2 logfile groups first after that instance 1.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
check following activity logs:
login as: root
root@192.168.78.51's password:
Last login: Fri Jun 29 13:10:25 2018 from 192.168.78.1
[root@rac1 ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/vg_rac1-lv_root
27G 14G 12G 54% /
tmpfs 2.0G 711M 1.4G 35% /dev/shm
/dev/sda1 485M 55M 405M 12% /boot
12cR1_softs 430G 330G 101G 77% /media/sf_12cR1_softs
/dev/asm/shared-385 1.0G 144M 881M 14% /SHARED
[root@rac1 ~]#
[root@rac1 ~]#
[root@rac1 ~]#
[root@rac1 ~]#
[root@rac1 ~]#
[root@rac1 ~]#
[root@rac1 ~]#
[root@rac1 ~]# su - oracle
==================================================================
SETTING ENVIRONMENT
1. Grid
2. Database
Enter your choice :
2
[oracle@rac1 ~]$
[oracle@rac1 ~]$

[oracle@rac1 ~]$
[oracle@rac1 ~]$
[oracle@rac1 ~]$sqlplus / as sysdba
SQL*Plus: Release 12.1.0.1.0 Production on Fri Jun 29 14:28:29 2018
Copyright (c) 1982, 2013, Oracle. All rights reserved.
Connected to:
Oracle Database 12c Enterprise Edition Release 12.1.0.1.0 - 64bit Production
With the Partitioning, Real Application Clusters, Automatic Storage Management,
OLAP,
Advanced Analytics and Real Application Testing options
SQL> set echo off
set feedback off
set linesize 120
set pagesize 35
set trim on
set trims on
set lines 120
f.member,
l.archived,
l.status,
from
order by 1,2
/
SQL> SQL> SQL> SQL> SQL> SQL> SQL> SQL> SQL> SQL> SQL> SQL> SQL> SQL> 2 3
4 5 6 7 8 9 10
------ -------
----------------------------------------------------------------------
---------- ---------- ---------
YES INACTIVE 50
YES INACTIVE 50
NO CURRENT 50
NO CURRENT 50
YES INACTIVE 50
YES INACTIVE 50
NO CURRENT 50
NO CURRENT 50
SQL> SQL>

SQL>
SQL>
SQL>
SQL> alter database add logfile thread 1 group 5 ('+DATA','+FRA') size 100M;
SQL>
SQL>
SQL>
SQL>
SQL> SQL> set timing on
SQL>
Elapsed: 00:01:21.18
SQL>
SQL>
SQL> set echo off
set feedback off
set linesize 120
set pagesize 35
set trim on
set trims on
set lines 120
f.member,
l.archived,
l.status,
from
order by 1,2
/SQL> SQL> SQL> SQL> SQL> SQL> SQL> SQL> SQL> SQL> SQL> SQL> SQL> SQL> 2 3
4 5 6 7 8 9 10
------ -------
----------------------------------------------------------------------
---------- ---------- ---------
YES INACTIVE 50
YES INACTIVE 50
NO CURRENT 50
NO CURRENT 50
YES INACTIVE 50
YES INACTIVE 50
NO CURRENT 50
NO CURRENT 50

YES UNUSED 100
YES UNUSED 100
YES UNUSED 100
YES UNUSED 100
YES UNUSED 100
YES UNUSED 100
YES UNUSED 100
YES UNUSED 100
Elapsed: 00:00:09.08
SQL>
SQL>
SQL>
SQL> alter system switch logfile;
Elapsed: 00:00:14.14
SQL>
SQL>
SQL> select l.group#, l.thread#,
f.member,
l.archived,
l.status,
from
order by 1,2
/ 2 3 4 5 6 7 8 9 10
------ -------
----------------------------------------------------------------------
---------- ---------- ---------
YES INACTIVE 50
YES INACTIVE 50
NO ACTIVE 50
NO ACTIVE 50
YES INACTIVE 50
YES INACTIVE 50
NO CURRENT 50
NO CURRENT 50
NO CURRENT 100
NO CURRENT 100
YES UNUSED 100
YES UNUSED 100

YES UNUSED 100
YES UNUSED 100
YES UNUSED 100
YES UNUSED 100
Elapsed: 00:00:17.09
SQL>
SQL> select l.group#, l.thread#, f.member, l.archived, l.status,
and l.thread#=1 ; 2 3
------ -------
----------------------------------------------------------------------
---------- ---------- ---------
YES ACTIVE 50
YES ACTIVE 50
YES INACTIVE 50
YES INACTIVE 50
NO CURRENT 100
NO CURRENT 100
YES UNUSED 100
YES UNUSED 100
Elapsed: 00:00:09.42
Elapsed: 00:00:05.75
SQL>
------ -------
----------------------------------------------------------------------
---------- ---------- ---------
YES ACTIVE 50
YES ACTIVE 50
YES INACTIVE 50
YES INACTIVE 50
YES ACTIVE 100
YES ACTIVE 100
NO CURRENT 100

NO CURRENT 100
Elapsed: 00:00:13.75
Elapsed: 00:00:09.54
SQL>
------ -------
----------------------------------------------------------------------
---------- ---------- ---------
YES ACTIVE 50
YES ACTIVE 50
NO CURRENT 50
NO CURRENT 50
YES ACTIVE 100
YES ACTIVE 100
NO ACTIVE 100
NO ACTIVE 100
Elapsed: 00:00:19.82
SQL>
Elapsed: 00:00:42.84
------ -------
----------------------------------------------------------------------
---------- ---------- ---------
NO CURRENT 50
NO CURRENT 50
NO ACTIVE 50
NO ACTIVE 50
YES ACTIVE 100
YES ACTIVE 100
YES ACTIVE 100
YES ACTIVE 100
Elapsed: 00:00:12.23
SQL>

Elapsed: 00:00:15.77
SQL>
------ -------
----------------------------------------------------------------------
---------- ---------- ---------
NO ACTIVE 50
NO ACTIVE 50
YES ACTIVE 50
YES ACTIVE 50
NO CURRENT 100
NO CURRENT 100
YES ACTIVE 100
YES ACTIVE 100
Elapsed: 00:00:13.55
SQL>
SQL>
SQL>
SQL>
Elapsed: 00:00:00.50
SQL>
------ -------
----------------------------------------------------------------------
---------- ---------- ---------
YES INACTIVE 50
YES INACTIVE 50
YES INACTIVE 50
YES INACTIVE 50
YES ACTIVE 100
YES ACTIVE 100
NO CURRENT 100
NO CURRENT 100
Elapsed: 00:00:00.17

SQL>
SQL> alter database drop logfile group 1;
Elapsed: 00:00:01.87
Elapsed: 00:00:01.22
SQL>
SQL>
SQL>
------ -------
----------------------------------------------------------------------
---------- ---------- ---------
YES ACTIVE 100
YES ACTIVE 100
NO CURRENT 100
NO CURRENT 100
Elapsed: 00:00:00.20
SQL>
SQL>
SQL> select l.group#, l.thread#,
f.member,
l.archived,
l.status,
from
order by 1,2
/ 2 3 4 5 6 7 8 9 10
------ -------
----------------------------------------------------------------------
---------- ---------- ---------
YES ACTIVE 100
YES ACTIVE 100
NO CURRENT 100
NO CURRENT 100
YES ACTIVE 100
YES ACTIVE 100
NO CURRENT 100
NO CURRENT 100
Elapsed: 00:00:00.19
SQL>
SQL>

SQL>
SQL>
SQL>
SQL>
SQL> exit
Disconnected from Oracle Database 12c Enterprise Edition Release 12.1.0.1.0 -
64bit Production
OLAP,
[oracle@rac1 ~]$
````````````````````````````````````
login as: root
root@192.168.78.52's password:
Last login: Fri Jun 29 13:11:41 2018 from 192.168.78.1
[root@rac2 ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/vg_rac1-lv_root
27G 14G 12G 53% /
tmpfs 2.0G 638M 1.4G 32% /dev/shm
/dev/sda1 485M 55M 405M 12% /boot
12cR1_softs 430G 330G 101G 77% /media/sf_12cR1_softs
/dev/asm/shared-385 1.0G 144M 881M 14% /SHARED
[root@rac2 ~]#
[root@rac2 ~]#
[root@rac2 ~]#
[root@rac2 ~]# su - oracle
==================================================================
SETTING ENVIRONMENT
1. Grid
2. Database
Enter your choice :
2
[oracle@rac2 ~]$sqlplus / as sysdba
SQL*Plus: Release 12.1.0.1.0 Production on Fri Jun 29 14:44:12 2018
Copyright (c) 1982, 2013, Oracle. All rights reserved.
Connected to:
Oracle Database 12c Enterprise Edition Release 12.1.0.1.0 - 64bit Production
OLAP,
SQL> set timing on
SQL> set lines 200 pages 200
SQL> SQL> SQL>
SQL>
SQL>
and l.thread#=2 ;
2 3

GROUP# THREAD#
---------- ----------
MEMBER
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
----------------------------------------
ARC STATUS FSIZE
--- ---------------- ----------
3 2
+DATA/RAC/ONLINELOG/group_3.288.961583983
YES INACTIVE 50
3 2
+FRA/RAC/ONLINELOG/group_3.265.961583989
YES INACTIVE 50
4 2
YES ACTIVE 50
4 2
YES ACTIVE 50
7 2
NO CURRENT 100
7 2
NO CURRENT 100
8 2
YES UNUSED 100
8 2
YES UNUSED 100
8 rows selected.
Elapsed: 00:00:42.39
SQL> SQL> SQL> SQL> SQL> SQL> SQL> SQL> SQL> SQL> set echo off
set feedback off
set linesize 120
set pagesize 35
set trim on
set trims on
set lines 120
SQL> SQL> col fsize format 999 heading "Size (MB)"SQL> SQL> SQL> SQL> SQL> SQL>

SQL> SQL> SQL> SQL>
SQL> /
------ -------
----------------------------------------------------------------------
---------- ---------- ---------
YES INACTIVE 50
YES INACTIVE 50
YES ACTIVE 50
YES ACTIVE 50
NO CURRENT 100
NO CURRENT 100
YES UNUSED 100
YES UNUSED 100
Elapsed: 00:00:08.54
SQL>
Elapsed: 00:00:06.88
SQL>
------ -------
----------------------------------------------------------------------
---------- ---------- ---------
YES INACTIVE 50
YES INACTIVE 50
YES INACTIVE 50
YES INACTIVE 50
YES ACTIVE 100
YES ACTIVE 100
NO CURRENT 100
NO CURRENT 100
Elapsed: 00:00:09.10
SQL>
SQL>
Elapsed: 00:00:10.56
SQL>
Elapsed: 00:00:03.52
SQL>

------ -------
----------------------------------------------------------------------
---------- ---------- ---------
YES ACTIVE 100
YES ACTIVE 100
NO CURRENT 100
NO CURRENT 100
Elapsed: 00:00:00.71
SQL>
SQL>
SQL>
SQL> exit
Disconnected from Oracle Database 12c Enterprise Edition Release 12.1.0.1.0 -
64bit Production
OLAP,
[oracle@rac2 ~]$

Redo logfile addition in oracle rac 12c

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