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ORA-27120? EPC_DISABLE=TRUE?

From: Doug Cowles <dcowles_at_us.ibm.com>
Date: Sun, 16 Jan 2000 18:19:31 -0500
Message-ID: <38825203.6F7EE14@us.ibm.com>


Anyone familiar with ORA-27120? Our instance was shut down by the checkpoint process. One time only, is running fine now. We only have 9 datafiles on this rather small database. As you can see by the trace file below, Oracle got the impression it was over 500 million. We have both Oracle and AIX support investigating this. Oracle core dumped. We are running
8.1.5 on AIX 4.3.2. The end of the alert log was - ARC0: received prod
  Current log# 4 seq# 220 mem# 1: /db17/oradata/OFDVP/redo04b.log Wed Jan 12 09:05:37 2000
ARC0: media recovery disabled
Wed Jan 12 11:53:26 2000
CKPT: terminating instance due to error 1131 Instance terminated by CKPT, pid = 67850

Oracle's initial reaction was that they had some stuff on this for Sun, but would have to dig around for AIX, which they are still doing. Our AIX support suggested this -
"I searched austext for entries related to what we're experiencing right now, and one of the suggestions is the following: add "EPC_DISABLED=true" to Oracle's .profile"

This is set by the .oraenv automatically on our 7.3.4 database, but not on 8i.

So the question is, does anyone have any experience with ORA-27120, and can anyone enlighten me as to what EPC_DISABLE means, and wether it might help? The trace file is below.
Thanks,
Dc.

Dump file /u01/app/oracle/admin/OFDVP/bdump/ckpt_67850_ofdvp.trc Oracle8i Enterprise Edition Release 8.1.5.0.0 - Production With the Partitioning and Java options
PL/SQL Release 8.1.5.0.0 - Production
ORACLE_HOME = /u01/app/oracle/product/8.1.5EE System name: AIX
Node name: ofdb1

Release: 3
Version: 4
Machine: xxxxx

Instance name: OFDVP
Redo thread mounted by this instance: 1 Oracle process number: 5
Unix process pid: 67850, image: oracle_at_ofdb1 (CKPT) Received on Sun Jan 16 2000 - 17:19:31 CST

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