Oracle-L: How to create Redo Log Members. Oracle8.1.7

From: Meomeo Nguyen <meomeo22_at_YAHOO.COM>
Date: Wed, 22 May 2002 09:14:51 -0800
Message-ID: <F001.00467DCB.20020522091451@fatcity.com>

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
---------- ------- --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 1 /Disk01/app/oradata/ttdb/redo01.log

select * from sys.v$logfile where group# = 2;

select * from sys.v$logfile where group# = 3;

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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Received on Wed May 22 2002 - 12:14:51 CDT