  | | | -none- | -none- 2007-08-13 - By Ted Coyle
Back Set your TNS_ADMIN director to a single place with valid TNSNames and SQLNET.ora files or,
You could always hardcode the connect descriptor in the link thus removing TNS as an issue.
This gets confusing late at night if not noted primarily because altering the TNS has no effect on hard coded links. :-)
Syntax:
create public database link TNSBYPASS
connect to system identified by manager42
using '(DESCRIPTION=(ADDRESS=(HOST=YOURMACHINE.COM)(PROTOCOL=TCP)(PORT=1521))(CONN ECT_DATA=(SERVICE_NAME=YOURSERVICE.NAME.COM)))'
Obviously there are security issues with this approach as well.
Also I've run 8.1.7.4, 9.2.0.4, 9.2.0.7, 10.1.0.4, 10.2.0.2 and 10.2.0.3 listeners simultaneously on the same machine.
It's not fun, but it was for testing various issues between systems.
Main issue we had was with auto registration and crashing listeners when 9 and 10 local_listeners were not set and 8.1.7.4 listener was defaulted to 1521.
-Ted
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From: oracle-l-bounce@(protected) [mailto:oracle-l-bounce@(protected)] On Behalf Of David Sharples Sent: Monday, August 13, 2007 2:21 PM To: mccdba1@(protected) Cc: Niall Litchfield; oracle-l@(protected) Subject: Re: dblink problem on two verion of ORACLE DB
its NOTHING to do with your listener and EVERYTHING to do with your tnsnames setup
On 13/08/07, dba1 mcc <mccdba1@(protected)> wrote:
I knew that is problem, but based on ORACLE say you can Only turn on one listener which is highest version of ORACLE.
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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size: 10.0pt;font-family:Arial;color:navy'>Set your TNS_ADMIN director to a single place with valid TNSNames and SQLNET.ora files or,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size: 10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size: 10.0pt;font-family:Arial;color:navy'>You could always hardcode the connect descriptor in the link thus removing TNS as an issue.<o:p></o:p></span></font>< /p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size: 10.0pt;font-family:Arial;color:navy'>This gets confusing late at night if not noted primarily because altering the TNS has no effect on hard coded links& #8230; </span></font><font size=2 color=navy face=Wingdings><span style='font-size: 10.0pt;font-family:Wingdings;color:navy'>J</span></font><font size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial; color:navy'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size: 10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size: 10.0pt;font-family:Arial;color:navy'>Syntax:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size: 10.0pt;font-family:Arial;color:navy'>create public database link TNSBYPASS<o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size: 10.0pt;font-family:Arial;color:navy'> connect to system identified by manager42<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size: 10.0pt;font-family:Arial;color:navy'> using '(DESCRIPTION=(ADDRESS=(HOST=YOURMACHINE.COM)(PROTOCOL=TCP)(PORT=1521))(CONNECT _DATA=(SERVICE_NAME=YOURSERVICE.NAME.COM)))'<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size: 10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size: 10.0pt;font-family:Arial;color:navy'>Obviously there are security issues with this approach as well.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size: 10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size: 10.0pt;font-family:Arial;color:navy'>Also I’ve run 8.1.7.4, 9.2.0.4, 9.2.0.7, 10.1.0.4, 10.2.0.2 and 10.2.0.3 listeners simultaneously on the same machine.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size: 10.0pt;font-family:Arial;color:navy'>It’s not fun, but it was for testing various issues between systems. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size: 10.0pt;font-family:Arial;color:navy'>Main issue we had was with auto registration and crashing listeners when 9 and 10 local_listeners were not set and 8.1.7.4 listener was defaulted to 1521.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size: 10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size: 10.0pt;font-family:Arial;color:navy'>-Ted<o:p></o:p></span></font></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt; font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> oracle-l-bounce@(protected) [mailto:oracle-l-bounce@(protected)] <b><span style='font-weight:bold'>On Behalf Of </span></b>David Sharples<br> <b><span style='font-weight:bold'>Sent:</span></b> Monday, August 13, 2007 2:21 PM<br> <b><span style='font-weight:bold'>To:</span></b> mccdba1@(protected)<br> <b><span style='font-weight:bold'>Cc:</span></b> Niall Litchfield; oracle-l@(protected)<br> <b><span style='font-weight:bold'>Subject:</span></b> Re: dblink problem on two verion of ORACLE DB</span></font><o:p></o:p></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size: 12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>its NOTHING to do with your listener and EVERYTHING to do with your tnsnames setup<o:p></o:p></span>< /font></p>
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<p class=MsoNormal><span class=gmailquote><font size=3 face="Times New Roman"> <span style='font-size:12.0pt'>On 13/08/07, <b><span style='font-weight:bold'>dba1 mcc</span></b> <<a href="mailto:mccdba1@(protected)">mccdba1@(protected)</a>> wrote:</span></font></span> <o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size: 12.0pt'>I knew that is problem, but based on ORACLE say you<br> can Only turn on one listener which is highest version <br> of ORACLE.<o:p></o:p></span></font></p>
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