RE: ASM Directory or Alias Rename
Date: Mon, 14 Sep 2009 17:08:03 +0200
ASM uses the db_unique_name to configure it's directories. I don't think it is possible to let 2 databases with the same db_unique_name to use the same ASM instance. (The same db_name should not matter).
I also would advise not to use aliasses in ASM. It can become very messy when doing restores :)
Oracle Database Administrator
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From: oracle-l-bounce_at_freelists.org [oracle-l-bounce_at_freelists.org] On Behalf Of Thomas Roach [troach_at_gmail.com] Sent: 14 September 2009 15:28
To: Oracle Discussion List
Subject: ASM Directory or Alias Rename
I am on Oracle 10.2.0.4. I am migrating databases and consolidating servers. Unfortunately I have Databases that have the same name. The issue is that I now need to do a database rename.
I am thinking and have tried several approaches but wanted to get the feedback of the group for the best way to do what I am trying to do.
ISSUE: I have a database with the name testdb. In ASM I have everything under +DATA/testdb.
I rename the Database with db new id 'nid target=/ DB_NAME=testdb1 SETNAME=yes' -- This is because I just need a new DB name and not a new DBID. This is so the names don't clash under ASM.
Upon opening the DB, I now had a '+DATA/testdb' and '+DATA/testdb1'. All the files are created under the new location but the old ones are kept under the old. I went ahead and shut the DB down and removed all files under the new location (mainly just archivelogs). I then tried to rename the alias and directory. Both error out.
SQL> alter diskgroup DATA rename directory '+DATA/testdb' to '+DATA/testdb1';
alter diskgroup DATA rename directory '+DATA/testdb' to '+DATA/testdb1'
ERROR at line 1:
ORA-15032: not all alterations performed ORA-15177: cannot operate on system aliases
SQL> alter diskgroup DATA rename alias '+DATA/testdb' to '+DATA/testdb1';
alter diskgroup DATA rename alias '+DATA/testdb' to '+DATA/testdb1'
ERROR at line 1:
ORA-15032: not all alterations performed ORA-15113: alias name 'TESTDB' refers to a directory
One last option I am thinking of is using RMAN to copy everything over but instead I figured it would be a good idea to check with the group to see what ideas they might come up with, so here I am : )
TomReceived on Mon Sep 14 2009 - 10:08:03 CDT