Re: Does the client "hang" or "disconnect" when the server's

Hi!

This sqlnet.expire_time affects server, not sqlplus itself AFAIK. The issue is likely, that sqlplus has sent a sqlnet request to server, but hasn't got any response since you pulled the network cable. Thus it'll wait until TCP connection gets timeout.
Also, sqlplus is different from normal telnet, because it tries to send a request only when it is on it's prompt, thus issuing a command in sqlplus session, when it is waiting for response from previous command, doesn't send any network packets.

Tanel.

• Original Message ----- From: "Michael Boligan" <michael.boligan.b_at_bayer.com> To: "Multiple recipients of list ORACLE-L" <ORACLE-L_at_fatcity.com> Sent: Thursday, July 24, 2003 6:54 PM Subject: Re: Does the client "hang" or "disconnect" when the server's

>
>
>
>
> Hemant,
>
> You are right it does get a timeout from the TCP stack, but the
default
> for the connection timeout is 30 minutes. There is a sqlnet parameter
where you
> can modify the timeout to make it shorter (sqlnet.expire_time?) Check
metalink
> note 151972.1 for more info.
>
> HTH
> Mike
>
>
>
>
> Hemant K Chitale
> <hkchital_at_singnet To: Multiple
recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>
> .com.sg> cc:
> Sent by: Subject: Does the client
"hang" or "disconnect" when the server's
> ml-errors_at_fatcity
> .com

>
>
> 07/24/2003 11:24
> AM
> Please respond to
> ORACLE-L
>
>
>
>
>
>
>
>
> I'm sorry, but I really can't remember how an Oracle SQLPlus client is
supposed
> to behave when the database server's network interface is "pulled out".
> We were testing a new Sun Cluster and tests for Storage FC Path Failure,
> Instance Failure,
> Node Failure, HeartBeat failure and single Network Interface failure all
> went through.
>
> However, when the engineer pulled out *both* network interfaces of the
running
> database server node, the SQLPlus client that had been running INSERT
> statements
> just "hung". It did not exit or error out till we killed the job. At the
> next restart, of course,
> it connected to the database which had already failed-over to the second
node.
>
> The question is : Why does the SQLPlus client "hang" ? Telnet sessions
> also might
> "hang" [couldnt' test this out as the Servers are Secured and we didn't
> have SSH on the
> client], till the user hits the ENTER key, but shouldn't SQLPlus get
server
> disconnect
> from the TCP stack ?
>
>
> Hemant K Chitale
> Oracle 9i Database Administrator Certified Professional
> My personal web site is : http://hkchital.tripod.com
>
>
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.net
> --
> Author: Hemant K Chitale
> INET: hkchital_at_singnet.com.sg
>
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Received on Thu Jul 24 2003 - 10:19:17 CDT