Why login db fail?

From: music4 <music4_at_163.net>
Date: Fri, 12 Aug 2005 13:33:45 +0800
Message-ID: <ddhcer$o6d@netnews.net.lucent.com>

Greetings,

I am using Oracle 8.1.7 standard edition. I have a database instance, and I can login to it with "sqlplus username/password_at_dbname", but when I login with "sqlplus username/password", login fail and error message is:

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# export ORACLE_SID=DBNAME
# /data/SMSC/bdump (417)$ sqlplus username/password

SQL*Plus: Release 8.1.7.0.0 - Production on Fri Aug 12 13:20:27 2005

(c) Copyright 2000 Oracle Corporation. All rights reserved.

ERROR:
ORA-03113: end-of-file on communication channel

Enter user-name:

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What's the problem? How to solve it?

Any help will be greatly appreciated.

Evan Received on Fri Aug 12 2005 - 00:33:45 CDT