Oracle-L: Re:external library path

From: <dgoulet_at_vicr.com>
Date: Fri, 14 Feb 2003 14:14:01 -0800
Message-ID: <F001.0054E49F.20030214141401@fatcity.com>

I'll bet XP. Since Unix & Linus are case sensitive, M$ looks like they finally got on the bandwagon.

Dick Goulet

____________________Reply Separator____________________
Author: "Igor Neyman" <ineyman_at_perceptron.com>
Date:       2/14/2003 1:43 PM

Thought, I'll share with the list, what I found on the subject today, m.b. it'll be helpful to somebody.

Under 8.1.5 on NT dll path specification in CREATE LIBRARY statement was case-insensitive:

create library externDDM as 'D:\OraNT\bin\ext_ddm.dll' /

will work properly no matter what is the actual case used in path and file name, so "D:\OraNT\bin\ext_ddm.dll", as well as "D:\ORANT\Bin\ext_ddm.dll", or "D:\orant\BIN\ext_ddm.dll".

It's different under 9.2 on Windows XP. Case used in file path and name in CREATE LIBRARY should exactly match the case used in Windows (what you see in Windows Explorer). So, if the path in XP is "D:\orant\BIN" and the file name is "EXT_ddm.dll", then you statement should look exactly like:

create library externDDM as 'D:\orant\BIN\EXT_ddm.dll' /

You don't get any error, when you issue CREATE LIBRARY (even if you use wrong case), but when you run code referencing external procedure in this dll, you get:

ORA-28595: Extproc agent : Invalid DLL Path

BTW, "ORA-28595" is not described in Oracle documentation (checked both 8.1 and 9.2).

Now, I'm not sure, if this problem is caused by 9.2 version or XP, just didn't have chance to try different configuration (like 8.1.5 on XP).

Igor Neyman, OCP DBA
ineyman_at_perceptron.com

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<DIV><FONT size=2>Thought, I'll share with the list, what I found on the subject

today, m.b. it'll be helpful to somebody.</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>Under 8.1.5 on NT dll path specification in CREATE LIBRARY
statement was case-insensitive:</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>create library externDDM as
'D:\OraNT\bin\ext_ddm.dll'<BR>/<BR></FONT></DIV>
<DIV><FONT size=2>will work properly no matter what is the actual case used in
path and file name, so "D:\OraNT\bin\ext_ddm.dll", as well as "D:\ORANT\Bin\ext_ddm.dll", or "D:\orant\BIN\ext_ddm.dll".</DIV></FONT>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>It's different under 9.2 on Windows XP.  Case used in
file path and name in CREATE LIBRARY should exactly match the case used in Windows (what you see in Windows Explorer).  So, if the path in XP is "D:\orant\BIN" and the file name is "EXT_ddm.dll", then you statement should look exactly like:</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>create library externDDM as
'D:\orant\BIN\EXT_ddm.dll'</FONT></DIV>
<DIV><FONT size=2>/<BR></FONT></DIV>
<DIV><FONT size=2>You don't get any error, when you issue CREATE LIBRARY (even
if you use wrong case), but when you run code referencing external procedure in this dll, you get:</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>ORA-28595: Extproc agent : Invalid DLL Path</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>BTW, "ORA-28595" is not described in Oracle documentation
(checked both 8.1 and 9.2).</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>Now, I'm not sure, if this problem is caused by 9.2 version or

XP, just didn't have chance to try different configuration (like 8.1.5 on XP).</DIV></FONT>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>Igor Neyman, OCP DBA<BR><A
href="mailto:ineyman_at_perceptron.com">ineyman_at_perceptron.com</A><BR> 
</FONT></DIV>
<DIV> </DIV>
<DIV><FONT size=2></FONT> </DIV></BODY></HTML>

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Received on Fri Feb 14 2003 - 16:14:01 CST

Re:external library path - case sensitivity