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IDS Forum

Re: dbaccess dbname hangs for seconds

Posted By: Fernando Nunes
Date: Thursday, 11 August 2016, at 8:26 p.m.

In Response To: dbaccess dbname hangs for seconds (CHALLENGER212 ABDERRAFI)

Odds are that some client is connecting from a host which the server
cannot resolve immediately.
Try to verify that all the clients can be quickly resolved by the server.
running a "netstat -a" on the database server can help diagnose this issue.
If it hangs a bit it means it can't resolve the IP addresses to hostnames
quickly enough.

To mitigate that effect, apart fixing the DNS or file resolver, you can add
more MSC virtual processors and make sure you use the NSCACHE if your
version is 11.70 or later.

Regards.

On Fri, Aug 12, 2016 at 1:16 AM, CHALLENGER212 ABDERRAFI <
abderrafi212@gmail.com> wrote:

> Hi, I encounter a bizare problem, the connection to database just hangs at
> random for some seconds (10 to 50), I have nagios which monitor a
> transactionnal web site and we have noticed today some delay in the pagesn,
> when I have connected to the database server (Windowsd 2008 R2) and try to
> launch dbaccess, it was hanging for 20 seconds before it gaves me the list
> of
> databases, nothing in the log file, the checkpoints are correct (8 to 14
> seconds) and the activity is normal, can long requests or workload
> generates
> this phenomena ?
> how can diagnose in order to localize the source of the problem.
>
> for info, 3 months ago, I have the same problem, and I have detected hardly
> that there is a request when launched this symptom happened but it was
> logged
> in the online log that tere is a connection problem, now everything is ok,
> and
> also the activity was very normal today.
>
>
> ************************************************************
> *******************
> Forum Note: Use "Reply" to post a response in the discussion forum.
>
>

--
Fernando Nunes
Portugal

http://informix-technology.blogspot.com
My email works... but I don't check it frequently...

--001a1144844818ad330539d4f0b5

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