Are the hosts/sessions that currently are experiencing timeout problems
connecting from Win boxes?

-----Original Message-----
From: Benny Pei [mailto:[Email Address Removed] Thursday, August 28, 2003 2:21 PM
To: LazyDBA.com Discussion
Subject: got tns timed out when high load on db server


Hi,

In some occasions, we experience high load on the
server (like around 9.5) and some hosts can't connect
to the database via 1521 port and get this "ORA-12203:
TNS:unable to connect to destination " errror.

When this happens, I tried testing it via tnsping and
it was indeed timing out with 12203 errors. The
database is behind the firewall and only port 22, 1521
is opened. I also experience some problem connecting
to 1521 port from the same host. I wonder if having
multiple listeners would alleviate this?

benny


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