"SQL*Net message to client" Wait event with no SQL*Net connection

From: <JayMiller_at_TDWaterhouse.com>
Date: Mon, 10 Mar 2003 10:04:19 -0800
Message-ID: <F001.00564CCC.20030310100419@fatcity.com>

A developer/analyst was running 4 reports on our datawarehouse, connecting locally using SQL Plus from a telnet session on the Unix box. He then started 4 queries, spooling the output to the unix server (again, local).

He was curious as to why the sessions were both taking so long and why they alternated between showing as Active and Inactive in v$session.

When I checked v$session_wait for his sessions I saw that they were a mix of SQL*Net message from client and
SQL*Net message to client

Since he's not connecting through the listener, why would this wait event show up? There should be no network activity at all (I double checked that the SQL is not using any database links). Any ideas?

Oracle 8.1.6.2
Solaris 2.6

Thanks,
Jay Miller

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Author:
  INET: JayMiller_at_TDWaterhouse.com

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