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@lcohan<br />
<br />
&nbsp; I am following the <a href="https://www.mssqltips.com/sqlservertip/1433/how-to-setup-linked-servers-for-sql-server-and-oracle-64-bit-client/" rel="ugc">https://www.mssqltips.com/sqlservertip/1433/how-to-setup-linked-servers-for-sql-server-and-oracle-64-bit-client/</a><br />
<br />
But i am getting the error attached in the image file uploaded.<br />
<br />
I haven't been able to restart the SQL Server because is a production box.<br />
<a href="https://filedb.experts-exchange.com/incoming/2016/04_w15/1090457/MS-SQL_Error.jpg" target="_blank" class="file-inline" title="Error when testing connection. (37 KB)"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path d="M67.508 468.467c-58.005-58.013-58.016-151.92 0-209.943l225.011-225.04c44.643-44.645 117.279-44.645 161.92 0 44.743 44.749 44.753 117.186 0 161.944l-189.465 189.49c-31.41 31.413-82.518 31.412-113.926.001-31.479-31.482-31.49-82.453 0-113.944L311.51 110.491c4.687-4.687 12.286-4.687 16.972 0l16.967 16.971c4.685 4.686 4.685 12.283 0 16.969L184.983 304.917c-12.724 12.724-12.73 33.328 0 46.058 12.696 12.697 33.356 12.699 46.054-.001l189.465-189.489c25.987-25.989 25.994-68.06.001-94.056-25.931-25.934-68.119-25.932-94.049 0l-225.01 225.039c-39.249 39.252-39.258 102.795-.001 142.057 39.285 39.29 102.885 39.287 142.162-.028A739446.174 739446.174 0 0 1 439.497 238.49c4.686-4.687 12.282-4.684 16.969.004l16.967 16.971c4.685 4.686 4.689 12.279.004 16.965a755654.128 755654.128 0 0 0-195.881 195.996c-58.034 58.092-152.004 58.093-210.048.041z"/></svg>MS-SQL_Error.jpg</a>
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MS-SQL_Error.jpg

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In SQL Server Enterprise Manager, open \Server Objects\Linked Servers\Providers, right click on the OraOLEDB.Oracle provider, select properties and check the &quot;Allow inprocess&quot; option then please recreate your linked server and test again.
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Please find attached an image with the providers options.<br />
<br />
I haven't restarted the server, so maybe that could be why it is not working.<br />
<br />
Can i do some testing without restarting the server ?<br />
<a href="https://filedb.experts-exchange.com/incoming/2016/04_w16/1091273/Provider-Options.jpg" target="_blank" class="file-inline" title="OraOLEDB.Oracle Provider Options (31 KB)"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path d="M67.508 468.467c-58.005-58.013-58.016-151.92 0-209.943l225.011-225.04c44.643-44.645 117.279-44.645 161.92 0 44.743 44.749 44.753 117.186 0 161.944l-189.465 189.49c-31.41 31.413-82.518 31.412-113.926.001-31.479-31.482-31.49-82.453 0-113.944L311.51 110.491c4.687-4.687 12.286-4.687 16.972 0l16.967 16.971c4.685 4.686 4.685 12.283 0 16.969L184.983 304.917c-12.724 12.724-12.73 33.328 0 46.058 12.696 12.697 33.356 12.699 46.054-.001l189.465-189.489c25.987-25.989 25.994-68.06.001-94.056-25.931-25.934-68.119-25.932-94.049 0l-225.01 225.039c-39.249 39.252-39.258 102.795-.001 142.057 39.285 39.29 102.885 39.287 142.162-.028A739446.174 739446.174 0 0 1 439.497 238.49c4.686-4.687 12.282-4.684 16.969.004l16.967 16.971c4.685 4.686 4.689 12.279.004 16.965a755654.128 755654.128 0 0 0-195.881 195.996c-58.034 58.092-152.004 58.093-210.048.041z"/></svg>Provider-Options.jpg</a>
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Provider-Options.jpg

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It is a production box, i need to coordinate a downtime for the reboot.
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I don't think you can do much without restart after the Oracle client installation
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<div class="content wysiwyg-content">
Hi, <br />
<br />
&nbsp;I have a MS Server 2008 R2 &nbsp; <b>SERVER A</b> &nbsp;and i want to be able to access a Oracle database located at <b>SERVER B</b> &nbsp;from the server &nbsp;MS Server 2008 R2. &nbsp;<b>SERVER A</b><br />
<br />
&nbsp;I am able to communicate and access the data at Oracle level with some configuration made at TNSNAMES.ORA level but i need to create &nbsp;Link Server in <b>SERVER A</b>.<br />
<br />
&nbsp;How to create a Link Server &nbsp;?<br />
<br />
&nbsp; And what do i need for that ? <br />
<br />
&nbsp; Any idea or links ? <br />
<br />
Regards,
</div>
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Hi, 

 I have a MS Server 2008 R2   SERVER A  and i want to be able to access a Oracle database located at SERVER B  from the server  MS Server 2008 R2.  SERVER A

 I am able to communicate and access the data at Oracle level with some configuration made at TNSNAMES.ORA level but i need to create  Link Server in SERVER A.

 How to create a Link Server  ?

  And what do i need for that ? 

  Any idea or links ? 

Regards,

Connecting SQL Server to Oracle Database.  Link Server creation.

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

Microsoft SQL Server 2008 is a suite of relational database management system (RDBMS) products providing multi-user database access functionality.Component services include integration (SSIS), reporting (SSRS), analysis (SSAS), data quality, master data, T-SQL and performance tuning. Major improvements include the  Always On technologies and support for unstructured data types.