Can't Connect to Database - TNS Names Trouble

Hi all, this is my first posting, so bear with me as I struggle
through trying to word it in a logical manner that you can
understand! I'm definitely not an Oracle guru, but some of my
job duties require me to interact with several databases -- so I
know enough to get by. After the battle with the Nimda virus, my
system could not find the files to start SQL Plus and the icon
had turned to generic. In an attempt to try and resolve this, I
downloaded and installed the 8.17 client. I set up several
connections through Net 8 config asst, but some of them would
not work. Here's additional background info: we are moving to a
new clustered DB configuration. The old config was numerous
individual databases, but the new DB incorporates all the old
ones (just separate accounts). The funny thing is I have no
problem setting up connections to the old databases, but have
had zero luck connecting to any account on the new DB. I have
coworkers that are using an older version of SQL PLus and SQL
Net Easy Config and they don't have any problems connecting to
the new DB. We double checked there TNS names against mine and
found no differences. Also, I still have the old version of
Oracle loaded, because it wouldn't let me uninstall it -- I
loaded the 8.17 in a new home. I'm desparate, so any help at
all will be very appreciated. Sorry for such a long post.
Thanks,
SS

Steve,
This sounds like a job for Oracle Support. There are so many
factors here, and if the tnsnames.ora files are the same, it
will need some industrial strength investigation.
Alison
iSQL*Plus Team

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______________________________________________

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Copyright (c) 1991, 2005, Oracle. All rights reserved.
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SQL*Plus: Release 10.2.0.1.0 - Production on Wed Jul 11 22:28:01 2007
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Copyright (c) 1996, 2008 Oracle Corporation. All rights reserved.
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Any one have found a solution to the problem.
_Pete

Can´t connect to Database in OEMCA

Hi ...
I Can´t connect to any user of the database (including SYS or SYSTEM) by the ORACLE Enterprise Manager Console Administrator. I connect with SYSMAN or other administrator accounts ... i ping to the database ... i connect direct with standalone with any user created .... but not with the OEMCA.
ERROR: ORA 0131 Insufficient Privilegies (ias_admin, SYS, SYSTEM ... all)
I also have done Preferred Credentials ... when i do this the OEMCA don't run ... and don't return any error ...
Thank very much

When i connect direct in sqlpus (dos shell)... as SYS or SYSTEM an execute the statement - select * from v$pwfile_users; -
The return is
SYSDB SYSOP
INTERNAL TRUE TRUE
SYS TRUE TRUE
But if i connect in stand-alone as SYS or SYSTEM an then clik in SQL*PLUS Worksheet return this:
SQL> ERROR:
ORA-12545: Falha da ligação porque não existe host de destino ou objecto

Can't Connect to Database - TNS Names Trouble

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