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********OS async I/O limit 128************

 
Trng
Super Advisor

********OS async I/O limit 128************

Dear Gurus,

i have oracle database with SAP on PR and DR HPUX 11.23 Servers ..After converting to trusted mode to both machine ,i am unable to sync both database getting warning on DR database trace files Warning :OS async I/O limit 128 is lower than recovery batch 1024 " ...i have checked MAX_ASYNC_PORTS value on PR and DR server(it is 50) and asyncdsk module also loaded ...what needs to be done ? is it OS problem or database problem ?


rgds
trng
administrator
4 REPLIES
Kevin Lister
Frequent Advisor

Re: ********OS async I/O limit 128************

Hi,

Can you run this command and post the output?

kctune -q max_async_ports

thanks,

kev
SUDHAKAR_18
Trusted Contributor

Re: ********OS async I/O limit 128************

Hello,

Do you have /etc/privgroup file in your system ?

I hope creating the above file and giving previlages will solve the problem.

#setprivgrp - f / etc / privgroup
Kevin Lister
Frequent Advisor

Re: ********OS async I/O limit 128************

Hmmm, the /etc/privgroup should at least have something like this in it:

dba RTSCHED RTPRIO MLOCK

Does it?

kev
Trng
Super Advisor

Re: ********OS async I/O limit 128************

Hi ,

It was a problem in sap ..they fixed it


rgds'
sureshkumar
administrator