Listener freezes up

From: <blair_at_pjm.com>
Date: Mon, 02 Jul 2001 20:06:29 -0700
Message-ID: <F001.0033F981.20010702200205@fatcity.com>

AIX: 4.3.2.0
RDBMS 8.1.6.3 We have two instances on two different servers. There is replication from serverA to serverB. Periodically SID_A starts filling its alertlog with "ORA-00020 Max sessions" errors. It is reporting a failure of the replication into SID_B. It is SID_B that has the max sessions error (this is verified by connection to SQLNET on both instances). A

At the same time the listener on serverA freezes up with anywhere from 400-600 ESTABLISHED connections against port 1521 - the SQLNET LISTENER.

I'm capturing TNSPING times from server_B to SID_A. I'm also capturing a session count every 2 minutes. In my opinion the session count starts going up about 20 minutes before the TNSPING time get very long and ultimately stops returning.

We've had a TAR open for weeks and Oracle cannot solve it.

Any ideas for further troubleshooting?

..t

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