Trouble connecting: Oracle Explorer

I got the .NET Oracle Developer installed, and even downloaded the Oracle database on my computer.
In VS 2003 .NET, I can use Server Explorer and connect from Oracle Server fine. But in the Oracle Explorer, everytime I tried to connect it gives me this error:
An error occured while opening the connection: Connection must be opened for this operation
I'm using:
Data source name: (Local Database)
Role: Default
Connection name: hr.(Local Database)

Hi identityless. You might as well try un-installing, and then re-installing using two separate Oracle Homes. I'm not positive that this will work, but...
When you do the install, you want to make sure that the right version of the Oracle Data Provider for .NET is the default. Oracle 10g database includes version 10.1.0.2, but the Oracle Developer Tools for VS.NET include a newer version, 10.1.0.4.
For this reason, it probably makes sense to install the database first and the client second.
Good luck, and hope this works. Please let us know what happens.
-- Matt

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TNS Ping Utility for Linux: Version 10.2.0.1.0 - Production on 11-APR-2013 14:32:17
Copyright (c) 1997, 2005, Oracle. All rights reserved.
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ORC11G =
(DESCRIPTION =
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(CONNECT_DATA =
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(SERVICE_NAME = orc11g)
)Listner on Linux ,
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(SID_LIST =
(SID_DESC =
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(ORACLE_HOME = /u01/app/oracle/product/11.2.0/db_1)
(PROGRAM = extproc)
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# Do not remove the following line, or various programs
# that require network functionality will fail.
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Edited by: user11309581 on Apr 11, 2013 3:16 PM

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Table: filter
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num target     prot opt source               destination
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Chain FORWARD (policy ACCEPT)
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TNS Ping Utility for 64-bit Windows: Version 11.2.0.1.0 - Production on 11-APR-2
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Copyright (c) 1997, 2010, Oracle. All rights reserved.
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