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Because that user does not exist, you need to give more details. Did you create the user? Can it logon? Does it need to be in an admin group? Did you check the Oracle12c installer guide?
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Because that user does not exist, you need to give more details. Did you create the user? Can it logon? Does it need to be in an admin group? Did you check the Oracle12c installer guide?

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Yes, I'm able to logon Win 2012 server, using the same login account.
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Yes, I'm able to logon Win 2012 server, using the same login account.

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Did you put that user in an admin group? If not, did you solve it?<br />
<br />
Note that grading a B requires from you as an asker explain why. Please do so.
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Did you put that user in an admin group? If not, did you solve it?

Note that grading a B requires from you as an asker explain why. Please do so.

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<div class="content wysiwyg-content">
Hi,<br />
I'm not able to proceed with 12c setup, due to this error<br />
<br />
<a href="https://filedb.experts-exchange.com/incoming/2015/09_w38/934911/tt299.png" target="_blank" title="14 (88 KB)"><img alt="14" class="file-block lazyload" style="max-width: 800px;" data-src="https://filedb.experts-exchange.com/incoming/2015/09_w38/800_934911/tt299.png" /></a><br />
within Win 2012 server. why?
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tt299.png

Hi,
I'm not able to proceed with 12c setup, due to this error



within Win 2012 server. why?

Problem with the setup

Windows Server 2012 is the server version of Windows 8 and the successor to Windows Server 2008 R2. Windows Server 2012 is the first version of Windows Server to have no support for Itanium-based computers since Windows NT 4.0. Windows Server 2012, now in its second release (Windows Server 2012 Release 2) includes Foundation, Essentials, Standard and Datacenter, and does not support IA-32 or IA-64 processors.

Windows Server 2012

Oracle is an object-relational database management system. It supports a large number of languages and application development frameworks. Its primary languages are SQL, PL/SQL and Java, but it also includes support for C and C++. Oracle also has its own enterprise modules and application server software.

Oracle Database

Databases are organized collections of data, most commonly accessed through management systems including schemas, tables, queries and processes that allow users to enter and manipulate the information or utilize it in other fashions, such as with web applications or for reporting purposes.