RE: OPS instalation - pretty urgent

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Gopal et al,

One of the main differences between Oracle on HP-UX/Solaris/Sequent and Oracle on IBM is their use of the Post-wait driver which uses a 'test-and-set' lightweight mechanisn instead of semaphores. The other difference (in this OS memory structure area) is that Shared Memory segments need not be configured - there is of course an internal limit. I have never encountered this limit though). This greatly reduces the risk of having to restart the OS when adding databases to an existing box and the /etc/system needs to be changed.

I don't want to start on the ease/strength/maturity of AIX's Logical Volume Manager lest I trigger off a your-OS-vs-mine war!

John Kanagaraj
Oracle Applications DBA
DB Soft Inc
Work : (408) 970 7002

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• The opinions and facts contained in this message are entirely mine and do not reflect those of my employer or customers **

>You are right. IBM uses a light weight process
>(post wait driver??) instead of typical System V
>semaphores. It is dynamically allocated and
>you don't need to explicitly set them in
>sys config files (Right John??)
>
>
>Best Regards,
>K Gopalakrishnan
>Bangalore, INDIA
>
>-----Original Message-----
>Mladen
>Sent: Thursday, September 13, 2001 1:45 PM
>To: Multiple recipients of list ORACLE-L
>
>
>!! Please do not post Off Topic to this List !!
>
>Don, failover, dispatcher cross registration and server load balancing
>require MTS. Second, I'm not on AIX, that is why I was guessing about
>semaphores.
>Here are my versions:
>
>SQL*Plus: Release 8.1.7.0.0 - Production on Thu Sep 13 15:36:53 2001
>
>(c) Copyright 2000 Oracle Corporation. All rights reserved.
>
>Enter password:
>
>Connected to:
>Oracle8i Enterprise Edition Release 8.1.7.1.0 - 64bit Production
>With the Partitioning and Parallel Server options
>JServer Release 8.1.7.1.0 - 64bit Production
>
>SQL>
>
>HP-UX pdev1-a B.11.00 U 9000/800
>
>I admit that my advice might be a little bit off when it comes to IBM.
>HP uses semaphores and we do have tons of those.
>
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> INET: MGogala_at_oxhp.com
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>Author: K Gopalakrishnan
> INET: kaygopal_at_yahoo.com
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-- 
Author: John Kanagaraj
  INET: john.kanagaraj_at_hds.com

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