RE: pa-risc to itanium migration

From: Juan Miranda <>
Date: Thu, 13 Nov 2008 09:14:30 +0100
Message-ID: <003601c94567$dadaa500$0a03ec0a@PORT>


Some notes I hope will help you. This is for 10g and HPUX 11.23.  

  • Install Oracle patchset (of course) AND individual patches published after patchset.
  • HP-UX 11.23 don´t permit asynch i/o. You must use ASM, RAW or dbwr_slaves

I used:





  • Configure dbc_min_pct y dbc_max_pct ¡! (I use dbc_min =5 and dbc_max =8)
    • vx_ninode=40000 or it will eat a lot of CPU
  • This is very important: be prepared to get some querys running WORSE because the changes in the access plans.

It´s a good idea to prepare a test system before final migration.    

Good luck!    

De: [] En nombre de Hammond, Charles E.
Enviado el: miércoles, 12 de noviembre de 2008 21:58 Para:
Asunto: pa-risc to itanium migration  

Good day all,  

I would appreciate hearing of any experiences of Oracle database migration from HP-UX PA-RISC to HP-UX Itanium, especially relative to Oracle spincount, cursor sharing, HP-UX config, and any other lurking gems.  


Oracle: EE, OLTP avg sustained connects: ~3900

HP PA-RISC: HP9000/800/rp8420, 14 cpus, 48877mb, os: 11.11

HP Itanium: rx 7640, 12 cpus, 49017mb, os: 11.23

SAN: EMC, 1GB interconnects, single NIC    



Received on Thu Nov 13 2008 - 02:14:30 CST

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