If you have completely lost one redo log group your database won't be able to open.
Next thing is to know the STATUS of the lost redo log group (we know it because we are simulating the loss, but...) and, just because this information is on V$LOG view, try to get also the ARCHIVED column.
Now if the redo log group lost was INACTIVE and archived (YES value) we can simply recreate all members with the "alter database clear logfile" command;
if it was INACTIVE and not archived (NO value) we'll execute the "alter database clear unarchived logfile" command.
Let's look at the example. Here is my redo log group state
SQL> select member, a.group#, a.status, b.status, a.archived from v$log a, v$logfile b where a.group# = b.group# order by a.group#, member; MEMBER GROUP# STATUS STATUS ARC ------------------------------------------------------------ ---------- ---------------- ------- --- /home/oracle/app/oracle/oradata/orcl/redo01.log 1 INACTIVE YES /home/oracle/app/oracle/oradata/orcl/redo01b.log 1 INACTIVE YES /home/oracle/app/oracle/oradata/orcl/redo02.log 2 CURRENT NO /home/oracle/app/oracle/oradata/orcl/redo02b.log 2 CURRENT NO /home/oracle/app/oracle/oradata/orcl/redo03.log 3 INACTIVE YES /home/oracle/app/oracle/oradata/orcl/redo03b.log 3 INACTIVE YESDelete all members of redo log group 1 and kill your instance.
[oracle@localhost ~]$ rm /home/oracle/app/oracle/oradata/orcl/redo01* [oracle@localhost ~]$ ps -ef |grep smon oracle 8176 1 0 06:44 ? 00:00:03 ora_smon_orcl oracle 9057 3164 0 08:10 pts/5 00:00:00 grep smon [oracle@localhost ~]$ kill -9 8176Try to open your database ...
SQL> startup ORACLE instance started. Total System Global Area 456146944 bytes Fixed Size 1344840 bytes Variable Size 385878712 bytes Database Buffers 62914560 bytes Redo Buffers 6008832 bytes Database mounted. ORA-03113: end-of-file on communication channel Process ID: 9184 Session ID: 17 Serial number: 7... and look at your alert log
... ORA-00313: open failed for members of log group 1 of thread ORA-00312: online log 1 thread 1: '/home/oracle/app/oracle/oradata/orcl/redo01.log' ORA-00312: online log 1 thread 1: '/home/oracle/app/oracle/oradata/orcl/redo01b.log' USER (ospid: 9184): terminating the instance due to error 313 ...Start your database in MOUNT mode
SQL> startup mount ORACLE instance started. Total System Global Area 456146944 bytes Fixed Size 1344840 bytes Variable Size 385878712 bytes Database Buffers 62914560 bytes Redo Buffers 6008832 bytes Database mounted.Query the V$LOG view
SQL> select member, a.group#, a.status, b.status, a.archived from v$log a, v$logfile b where a.group# = b.group# order by a.group#, member; MEMBER GROUP# STATUS STATUS ARC ------------------------------------------------------------ ---------- ---------------- ------- --- /home/oracle/app/oracle/oradata/orcl/redo01.log 1 INACTIVE YES /home/oracle/app/oracle/oradata/orcl/redo01b.log 1 INACTIVE YES /home/oracle/app/oracle/oradata/orcl/redo02.log 2 CURRENT NO /home/oracle/app/oracle/oradata/orcl/redo02b.log 2 CURRENT NO /home/oracle/app/oracle/oradata/orcl/redo03.log 3 INACTIVE YES /home/oracle/app/oracle/oradata/orcl/redo03b.log 3 INACTIVE YESThe redo log group 1 is INACTIVE and ARCHIVED so simply issue the following command:
SQL> alter database clear logfile group 1; Database altered.Open your database
SQL> alter database open; Database altered.If you are in the situation to have lost an INACTIVE and NOT already ARCHIVED redo log group then your command should be the following:
SQL> alter database clear unarchived logfile group 1; Database altered.Next step is to perform a complete backup
RMAN> backup database;That's all.
5 comments:
I'm extremely impressed together with your writing abilities and also with the layout in your weblog. Is this a paid topic or did you customize it yourself? Either way stay up the excellent quality writing, it is uncommon to peer a nice weblog like this one today..
Feel free to visit my blog ... deblocari usi
oakley sunglasses, prada handbags, oakley sunglasses, longchamp handbags, longchamp handbags, louboutin shoes, louis vuitton handbags, coach factory outlet, tiffany and co, coach purses, louis vuitton outlet, polo ralph lauren outlet, air max, prada outlet, longchamp outlet, oakley sunglasses cheap, ray ban sunglasses, louboutin outlet, michael kors outlet, michael kors outlet, tiffany and co, burberry outlet, christian louboutin shoes, coach outlet store online, jordan shoes, polo ralph lauren outlet, louboutin, kate spade handbags, michael kors outlet, coach outlet, air max, gucci outlet, michael kors outlet, ray ban sunglasses, chanel handbags, michael kors outlet, tory burch outlet, nike free, kate spade outlet, louis vuitton outlet, burberry outlet, louis vuitton outlet stores, louis vuitton, nike shoes, michael kors outlet
abercrombie and fitch, instyler, ghd, bottega veneta, ugg boots, jimmy choo outlet, soccer shoes, ugg pas cher, herve leger, beats by dre, birkin bag, abercrombie and fitch, north face jackets, soccer jerseys, mont blanc, rolex watches, lululemon outlet, celine handbags, nike roshe run, nike trainers, giuseppe zanotti, hollister, wedding dresses, nike huarache, mcm handbags, vans shoes, chi flat iron, babyliss pro, north face outlet, nike roshe, ugg australia, ugg, marc jacobs, barbour, nfl jerseys, p90x, new balance shoes, asics running shoes, ferragamo shoes, mac cosmetics, insanity workout, uggs outlet, reebok outlet, longchamp, valentino shoes
converse, air max, gucci, canada goose, juicy couture outlet, canada goose, wedding dresses, moncler, ralph lauren, lancel, montre homme, moncler, louboutin, oakley, karen millen, vans, coach outlet store online, air max, canada goose jackets, ugg, hollister clothing store, louis vuitton, baseball bats, hollister, rolex watches, juicy couture outlet, iphone 6 cases, canada goose uk, canada goose outlet, ugg, moncler, moncler outlet, timberland boots, hollister, supra shoes, moncler, canada goose, converse shoes, toms shoes, moncler, moncler, canada goose, ugg boots, ray ban, parajumpers, canada goose
louboutin shoes
nike basketball shoes
kd shoes
hogan outlet online
fila
coach outlet sale
yeezy 700
nike cortez men
reebok shoes
balenciaga shoes
Post a Comment