Re: very high TNSPING values for SCAN listeners
- From: Niall Litchfield <niall.litchfield@xxxxxxxxx>
- To: cicciuxdba@xxxxxxxxx
- Date: Thu, 25 Aug 2011 16:43:33 +0100
For Grid Control periodic false "Agent Unreachable" alerts John Hallas has a
good blog article on one possible cause
http://jhdba.wordpress.com/2011/07/12/grid-control-sends-false-alerts-with-agent-to-oms-communication-broken-message/
For the customer that kept waking our on call guys necessarily I changed the
default value and updated the base table and all appears well.
On Thu, Aug 25, 2011 at 3:38 PM, Guillermo Alan Bort
<cicciuxdba@xxxxxxxxx>wrote:
> Well, removing actimeo=0 from the ORACLE_HOME NFS mount didn't help.
>
> I have a SR open with Oracle regarding a few other errors "Metric
> evaluation error start - Metric execution timed out in 600 seconds" and
> "Agent is Unreachable (REASON = Connection refused) but the host is
> reachable." that clear by themselves after a few minutes, so perhaps this is
> all related. From out last OWC apparently these are false alerts. I am
> waiting for their recommendation to apply any patch/psu.
>
> this particular technical analys has not been very forthcomming with
> updates, at least they are not as frequent as other OEM analyst I've worked
> with.
>
> cheers
> Alan.-
>
>
>
> On Wed, Aug 24, 2011 at 2:40 PM, Guillermo Alan Bort <cicciuxdba@xxxxxxxxx
> > wrote:
>
>> nope, no (useful) replies yet.
>>
>> One thing we found is that the /u00 filesystem where binaries are located
>> (which is a NFS mount) has the following parameters:
>>
>> rw,bg,hard,nointr,tcp,nfsvers=3,timeo=600,rsize=32768,wsize=32768,actimeo=0
>>
>> We are going to remove actimeo=0 once we have a downtime window and see
>> how it goes from there...
>>
>> thanks
>>
>> Alan.-
>>
>>
>>
>> On Fri, Aug 19, 2011 at 9:06 AM, Hemant K Chitale <
>> hemantkchitale@xxxxxxxxx> wrote:
>>
>>> Did you get any responses / recommendations? Any findings?
>>>
>>> Hemant K Chitale
>>> http://hemantoracledba.blogspot.com
>>> http://hemantscribbles.blogspot.com
>>>
>>> sent from my smartphone
>>>
>>
>>
>
--
Niall Litchfield
Oracle DBA
http://www.orawin.info
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