How to Access SQL*Plus with DBA account

Hi All,
I want to know how can I access and query database through DBA account
when I enter sys in Login filed and password in password filed it give me error
ORA- 28009:Connection as sys should be as sysdba or sysoper
when I enter sysdba in Login filed and password in password filed it give me error
ORA- 01017:Invalid username/password; Login denied
Please help me in this

OR
-- SYSTEM is a DBA account
sqlplus SYSTEM/password
--SUPER DBA with OSPER and SYSDBA role
You need the ORA_DBA group membership for using /
sqlplus / as sysdba
or
sqlplus "/ as sysdba"
or
sqlplus "sys as sysdba"
then enter password. HTH
SS

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It appears error message say "failure to login" during SQL*Plus
part of the Oracle8 full installation. I knew that system want
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dba account(maybe system user account). However, due to
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William (guest) wrote:
: Hi, everyone
: It appears error message say "failure to login" during SQL*Plus
: part of the Oracle8 full installation. I knew that system want
: to install SQL*Plus help and demos through logining one of
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: execute named pupbld.sql script, result in SQL*Plus help and
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: Now, I am intend to install these stuff lonely.
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: William
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Problem accessing SQL Developer with user sys

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Edited by: user12048358 on Jul 8, 2011 12:02 PM

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Thank you for answer.
First, I'm completely sure I'm using the correct password, to be sure I changed the password thru sqlplus.
I'm using tns connection, btw, with the same connection, I can connect, but with other user.
I was trying again, however, with the same results previous explained.
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emctl status dbconsole
OC4J Configuration issue. /opt/oracle/102/oc4j/j2ee/OC4J_DBConsole_yawi-db-lab01_YAWIBLAB not found.
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Oracle Enterprise Manager 10g Database Control Release 10.2.0.4.0
Copyright (c) 1996, 2007 Oracle Corporation. All rights reserved.
http://yawi-db-lab01:1158/em/console/aboutApplication
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sqlplus /nolog
SQL*Plus: Release 10.2.0.4.0 - Production on Sat Jul 9 23:03:15 2011
Copyright (c) 1982, 2007, Oracle. All Rights Reserved.
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SQL>
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YAWIDBLA =
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(SERVER = DEDICATED)
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Is the first time I see this kind of problem.
Have an idea of what's happening;
Best Regards;
Al

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│   └── tnsnames.ora
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│   └── sqlplus
└── lib
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SQL*Plus: Release 10.2.0.4.0 - Production on Tue Aug 28 14:45:18 2012
Copyright (c) 1982, 2007, Oracle. All Rights Reserved.
ERROR:
ORA-12154: TNS:could not resolve the connect identifier specified
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SQL*Plus: Release 10.2.0.4.0 - Production on Tue Aug 28 14:45:18 2012
Copyright (c) 1982, 2007, Oracle. All Rights Reserved.
ERROR:
ORA-12154: TNS:could not resolve the connect identifier specifiedAdding .world change nothing.
Using direct connect string works fine:
sqlplus access/access@"(DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.1)(PORT = 1521))(CONNECT_DATA = (SID = test)))"
SQL*Plus: Release 10.2.0.4.0 - Production on Tue Aug 28 14:45:18 2012
Copyright (c) 1982, 2007, Oracle. All Rights Reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bit ProductionWhere am I wrong and is it possible to make it work with TNS?
Thanks in advance.

insanepi wrote:
sqlplus access/[email protected]:1521/test
SQL*Plus: Release 10.2.0.4.0 - Production on Tue Aug 28 14:45:18 2012
Copyright (c) 1982, 2007, Oracle. All Rights Reserved.
ERROR:
ORA-12154: TNS:could not resolve the connect identifier specified
Add EZ_CONNECT to your names.directory_path for this.
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I didn't find anywhere better to post this, so I'm sorry if this is the wrong place.
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It's really interesting to see how a question like this gets answered. Some of what you've been told is true, some not, and most of it is a red herring...
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제품 : ORACLE SERVER
작성날짜 : 2004-05-20
발생)
oracle 디렉토리를 변경하거나, 오라클 화일의 위치 또는 permission 을
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해결 방안)
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SQL*Plus inside the VM can connect to XE, but not to either remote server. It just hangs for a while and finally returns: ORA-12545: Connect failed because target host or object does not exist
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