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Home -> Community -> Mailing Lists -> Oracle-L -> RE: How to create Redo Log Members. Oracle8.1.7
That should be fine. The name of the file is not important. I've seen log,
rdo, dbf, redo and many others.
The statement itself should be fine. Your log files seem to be the default
size ( 500k ). It may be worth checking how often you're switching log
files as you might want to make them larger if the database will be updated
heavily. You can see from the FIRST_TIME column in V$LOG_HISTORY when your
log switches are happening.
Something round about the half hour mark is nice.
Just a thought,
Regards,
Mike Hately
-----Original Message-----
Sent: 22 May 2002 18:15
To: Multiple recipients of list ORACLE-L
Hi,
I just wanted to create new online redo log members for existing groups.
Currently I have 3 online redo log groups. Each one contains only one
member. Here is information about the online redo log of a database
select group#, bytes, members from sys.v$log;
GROUP# BYTES MEMBERS
---------- ---------- ----------
1 512000 1
2 512000 1
3 512000 1
select * from sys.v$logfile where group# = 1;
GROUP# STATUS MEMBER
---------- -------
GROUP# STATUS MEMBER
---------- -------
GROUP# STATUS MEMBER
---------- -------
After reading the Database Administrator's Guide about how to create online
redo log members, I am a little bit confused about the file extension for
online redo log files.
To create new online redo log members for an existing group, use the
alter database add logfile member '/oracle/dbs/log2b.rdo' to group 1;
(From Orcle8.1.6 Administrator's Guide).
Based on my query information, member of group 1 is
/Disk01/app/oradata/ttdb/redo01.log.
My question is why the extension of the member of my redo log file is .log,
which is different from the Oracle Administrator's Guide's above
example?Here is my SQL statement to create redo log member for each existing
group.
alter database add logfile member ' /Disk02/app/oradata/ttdb/redo01a.log to
group 1; /* I place this member of group 1 in different location.
Just wondered whether this is a correct statement to create online redo log
member. If not, please show me how to fix it. Please help.
I want to add new online redo log member for existing groups because I want
to safeguard against a single point of online redo log failure.
Thanks in advance.
Trang
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-- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Hately Mike INET: Mike.Hately_at_churchill.com Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing ListsReceived on Wed May 22 2002 - 12:57:39 CDT
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