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Accessing an ASM instance from DB Console

Oracle Tips by Burleson Consulting
December 8,  2008

 

Question:  I have successfully created ASM instance, the DB connected to it, a tablespace created successfully in the Disk group and everything is working just fine.  My problem is I cannot see any link in the Oracle Database Control EM that lead me to manage the ASM.  How can I configure the DB Control OEM to manage the ASM instance?

Answer  (by Javier Falcón):  It IS possible to access and manage ASM from dbconsole without grid control. I´ve just done it on 10.2.0.4 on Windows.  The following are the needed steps:

1 - Edit your listener.ora and add an entry for the ASM instance in the SID_LIST

(SID_DESC =
(GLOBAL_DBNAME =
My_DB_SID)
(ORACLE_HOME=d:\oracle\product\10.2.0\db_2)
(SID_NAME = +ASM))


2 - Restart your listener

3 - Access DBConsole (e.g. with SYS as SYSDBA)

4 - In the "Administration" tab, click on the link called "Migrate to ASM"

5 - Fill in the required fields and press continue (it won´t do anything yet. It´s just the first step, to get ASM listen as a new OEM target).

6 - If it ever complains about ORA-1017, you need to recreate the ASM instance paswordfile. Take a backup of it first if you feel better so.

The syntax for recreating the passwordfile can be, for example:

orapwd file=D:\oracle\product\10.2.0\db_2\database\PWD+ASM.ora password=my_password force=y

(of course, you must replace the password and the path with the one that serves your needs)

The ASM target should have been created. Now, you only need to: click on the "Database" link on the right top of the DB Console window, or access the DB Console page again. You should see the ASM target link below the listener target. You only need to click the link and you´ll get the ASM home administration page, from DBConsole.

The ASM hyperlink is not directly shown in the main DBconsole page in some situations. But even if this is your case, you can still click on the Host name link in the left of the DBConsole main page (just over the listener name link), and once there, again click in the "Targets" link, and lastly in the "+ASM_your_DB_hostname" link, which then will take you to the ASM Administration main page.  You also have the option of directly typing the following URL, after the ASM target is created:

http://your_DB_hostname:your_DBConsole_port/em/console/database/osm/osmSitemap?type=osm_instance&target=%2BASM_your_DB_hostname&event=doLoad

It took me a while to discover this. I must recognize that I would have liked to see an answer like the one I´m writing during my search through forums, but I didn´t. Up to what I found, everybody said it was impossible, except with grid control. That´s why I decided to wrote these lines down.


 

 

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