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RE: Slow Export

From: Smith, Ron <>
Date: Tue, 31 Jan 2006 16:10:13 -0600
Message-ID: <>

Thanks. I'll let you know how it goes.

-----Original Message-----

From: M Rafiq [] Sent: Tuesday, January 31, 2006 4:09 PM
To: Smith, Ron;;; Subject: RE: Slow Export

Hopefully after commenting these entries in sqlnet.ora file your problem will be resolved.

I had issues with tnsping and found missing brackets or brakets were not placed properly. It was a Linux server with 9206 database. It was just taking forever and consuming all memory. After running trace we observed this issue.


From: "Smith, Ron" <>
To: "M Rafiq"
<>,<>,<>,<> Subject: RE: Slow Export
Date: Tue, 31 Jan 2006 15:54:40 -0600

Found this in the SQLNET.ORA file. Added to try to diagnose another problem.
About the time the exports started running slow.

TRACE_LEVEL_CLIENT=16 TRACE_DIRECTORY_CLIENT=/oracle_rdbms/app/oracle/product/8.1.7/network/trace TRACE_TIMESTAMP_CLIENT = ON TNSPING works well.


-----Original Message-----

From: M Rafiq [] Sent: Tuesday, January 31, 2006 3:43 PM
To: Smith, Ron;;;
Subject: RE: Slow Export

Is there any recent change to your local tnsnames.ora file. May be any bracket is missing or format error. How about your tnsping to that database work from local server?


From: "Smith, Ron" <>
To: "Bobak, Mark" <>,<>, "ORACLE-L" <>
Subject: RE: Slow Export
Date: Tue, 31 Jan 2006 15:26:19 -0600

No, I found I can run truss. Just don't know how since we usually can't run those type utilities. The only waits are SQL*NET waits, to and from the client. About 350 but no time associated with the wait. The export is local. If done remotely the export runs much faster, back to normal times.


	-----Original Message-----
	From: Bobak, Mark []
	Sent: Tuesday, January 31, 2006 3:15 PM
	To: Smith, Ron;; ORACLE-L
	Subject: RE: Slow Export, they explicitly deperm access to the truss binary?  On most Sun servers, it's in /usr/bin, and you should not need root permission to truss an oracle owned process.  If you can login as the user who started the database (presumably oracle), that should be good enough to do the trace. Unless they really do explicitly deperm the binary.  If that's true, I'd argue that's a battle you need to fight, in order to do you job well, you need access to O/S level tools like truss.  (I know, I know, easier said than done....;-))

	As for the V$SESSION_WAIT output, what do you mean by "looks low"?  Are you seeing waits?  What are they?

	Also, regarding Tanel's last question, are you exporting locally, or over the network?


	Mark J. Bobak
	Senior Oracle Architect
	ProQuest Information & Learning

	"There are 10 types of people in the world:  Those who understand binary, and those who don't."


	From: []
On Behalf Of Smith, Ron
	Sent: Tuesday, January 31, 2006 3:55 PM
	Subject: RE: Slow Export

	I had to restart the export.  Ran 8.5 hours this time.
	V$Session_Wait looks low right now.
	I have never used the Truss command.  Unix admins don't give us access.

		-----Original Message-----
		From: []
On Behalf Of Tanel Põder
		Sent: Tuesday, January 31, 2006 2:45 PM
		Subject: Re: Slow Export

		Are you exporting over network or locally in the server?

		V$SESSION_EVENT, V$SESSION_WAIT and truss -c should sufficient to reveal the cause..


			----- Original Message -----
			From: Smith, Ron <>
			To: ; ORACLE-L <>
			Sent: Tuesday, January 31, 2006 2:36 PM
			Subject: RE: Slow Export

			There are several exports in different databases, exporting various size objects.  The thing is, this started about the middle of December.
			Before that, everything was fine.


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Received on Tue Jan 31 2006 - 16:10:13 CST

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