Multiple LV instances, web server cannot start, port already in use

Hi there,
I have a general question about webserving VIs in case either
a) multiple instances of the LV development environment are running (this is possible in windows XP for instance when "switch users" is allowed and each user launches LV)
b) multiple compiled LV executables are run by the same user
c) any mixture of the two above
I have an application case when either of the three above would be a very good solution, was not for the problem encountered. Say, b): the user is given two deployed executables, and can decide to run either or both concurrently. Moreover, I want these applications to be visible on the web, so they are compiled with the webserver turned on, default settings.
The problem I've seen (LV8.5.1, winXp for sure, but I think I've seen it as well in linux and other versions as well) is that each new instance of the LV engine tries to get hold of the tcp port (default 80), so that all instances beyond the first complain about "The Web Server cannot start. Is the Web Server port already in use?"
While I can understand the origin of the message, and found some posts on the forums somehow related to it, I don't like it too much.
I could think only of two workarounds here: 1) set different web server ports for each LV instance, and instruct the remote users to direct their browsers to a webserverort link to access each VI; 2) run all the applications from the same instance of the LV dev system. The latter is not so convenient for me, due to conflicts in global VIs between all instances of the applications [compiling executables IS a way to privatize memory spaces in this case, AND global variables are imho well justified for the fairly complex application I have in mind here].
Is there a third, more elegant solution perhaps, which I'm missing?
Thanks, Enrico

NathanK wrote:
What is it in particular that you dislike about the message?
How would you like LabVIEW to behave in this case?
No problem with the message, but I'd just be very happy if a single
web server would serve all my instances of the executables on the same
port. I.e., if 2.exe is open and wants to start another server on the
same port used already by 1.exe, then 2.exe becomes served by the
server already opened. Am I demanding too much? Am I missing some
necessary logic?
At the moment, anyway, I'm stuck with the vi being served correctly,
but not the compiled application, and I can't figure out why. It's
LV8.5.1, and yes, I have in the .ini
WebServer.DirectoryIndex="index.htm"
WebServer.LogPath=C:\Program Files\National Instruments\LabVIEW 8.5\www.log
WebServer.MimeTypes="htm;text/html;gif;image/gif;jpg;image/jpeg;png;image/png;txt;text/plain;html;text/html;jpeg;image/jpeg;css;text/css;llb;application/x-labview-llb;vi;application/x-labview-vi;doc;application/msword;dot;application/msword;bin;application/octet-stream;exe;application/octet-stream;rtf;application/rtf;pdf;application/pdf;ai;application/postscript;eps;application/postscript;ps;application/postscript;csh;application/x-csh;gtar;application/x-gtar;gz;application/x-gz;sh;application/x-sh;tar;application/x-tar;zip;application/zip;hqx;application/mac-binhex40;ua;audio/basic;wav;audio/wav;tif;image/tiff;tiff;image/tiff;xbm;image/x-xbitmap;rtx;text/richtext;qt;video/quicktime;mov;video/quicktime;avi;video/x-msvideo;movie;video/x-sgi-movie;aif;audio/aif;aifc;audio/aif;aiff;audio/aif;aim;application/x-aim;dif;video/x-dv;div;video/x-dv;js;application/x-javascript;pntg;image/x-macpaint;xlb;application/vnd.ms-excel;xls;application/vnd.ms-excel;ppa;application/vnd.ms-powerpoint;ppt;application/vnd.ms-powerpoint;pps;application/vnd.ms-powerpoint;pot;application/vnd.ms-powerpoint;pwz;application/vnd.ms-powerpoint;mid;audio/mid;midi;audio/mid;enc;video/mpeg;m1v;video/mpeg;mp2;video/mpeg;mpa;video/mpeg;mpe;video/mpeg;mpeg;video/mpeg;mpg;video/mpeg;psd;image/x-photoshop;bmp;image/bmp;pic;image/pic;ra;audio/vnd.rn-realaudio;rf;image/vnd.rf-realflash;rm;application/vnd.rn-realmedia;rp;image/vnd.rn-realpix;ram;audio/x-pn-realaudio;rmm;audio/x-pn-realaudio;rnx;application/vnd.rn-realplayer;rt;text/vnd.rn-realtext;rv;video/vnd.rn-realvideo;smi;application/smil;ssm;application/streamingmedia;sithqx;application/mac-binhex40;sit;application/x-stuffit"
WebServer.Port=80 [### or 8000]
WebServer.Enabled=True
WebServer.RootPath=C:\Program Files\National Instruments\LabVIEW 8.5\www
WebServer.TcpAccess="c+*"
WebServer.ViAccess="+*"
[hints welcome here]. That is, I'm at the moment unable to use even my workaround 1 above.
Enrico

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the OCI.DLL file is corrupted in one of the above directory.
Below is the JSP code that I ran. Before that, my HTTP server is started correctly.
I really appreciate if someone could give me some pointers about this.
I also suspect that when the HTTP server was brought down for some reasons and it was not a clean shutdown.
So how can I shutdown the http server cleanly before restarting that?
Thanks;
Kelly.
<%@ page language="sqlj"
import="sqlj.runtime.ref.DefaultContext,oracle.sqlj.runtime.Oracl
e" %>
<HTML>
<HEAD> <TITLE> The SQLJQuery JSP </TITLE> </HEAD>
<BODY BGCOLOR="white">
<% String empno = request.getParameter("empno");
if (empno != null) { %>
<H3> Employee # <%=empno %> Details: </H3>
<%= runQuery(empno) %>
<HR><BR>
<% } %>
<B>Enter an employee number:</B>
<FORM METHOD="get">
<INPUT TYPE="text" NAME="empno" SIZE=10>
<INPUT TYPE="submit" VALUE="Ask Oracle");
</FORM>
</BODY>
</HTML>
<%!
private String runQuery(String empno) throws
java.sql.SQLException {
DefaultContext dctx = null;
String ename = null; double sal = 0.0; String hireDate = null;
StringBuffer sb = new StringBuffer();
try {
dctx = Oracle.getConnection("jdbc:oracle:oci8:@", "scott",
"tiger");
#sql [dctx] {
select ename, sal, TO_CHAR(hiredate,'DD-MON-YYYY')
INTO :ename, :sal, :hireDate
FROM scott.emp WHERE UPPER(empno) = UPPER(:empno)
sb.append("<BLOCKQUOTE><BIG><B><PRE>\n");
sb.append("Name : " + ename + "\n");
sb.append("Salary : " + sal + "\n");
sb.append("Date hired : " + hireDate);
sb.append("</PRE></B></BIG></BLOCKQUOTE>");
} catch (java.sql.SQLException e) {
sb.append("<P> SQL error: <PRE> " + e + " </PRE> </P>\n");
} finally {
if (dctx!= null) dctx.close();
return sb.toString();
%>

I had this problem and the pkgchk mentioned above helped to get the admin server going (thanks!) but I could not run the admin console. I saw:
Exception in thread "main" java.lang.UnsupportedClassVersionError: org/GNOME/Accessibility/JavaBridge (Unsupported major.minor version 49.0)
It turned out that something (I suspect the patch) had replaced my java1.5.0_06 binary with a java1.4.2_03 binary - but left the java1.5 directory structure alone! i.e. looking in /usr/jdk would have indicated that java1.5 was installed, but when I ran jdk1.5.0_06/bin/java -version , it reported java version "1.4.2_03". I was unimpressed.
I ended up removing all the SUNWj5* packages and reinstalling them and then I could start the admin console.
Now to find out what other damage this patch might have caused.....

Http server cannot start after running the following JSP

Hi,
I have 9iAS 1.0.2.2 and it has been working fine.
My http server was running fine until I ran the following Jsp. Now I cannot start the Http server at all.
I check the Oracle home and the path and make sure they match (i.e. if my Oracle Home is iSuites, I have the PATH variable: c:\oracle\isuites\bin as the 1st one. And I reboot the system after I changed the Oracle Home, check the PATH variable etc.)
I also check the oci.dll files, and I have the oci.dll file in the following directories:
c:\oracle\ora81\BIN 87KB
c:\oracle\806\BIN 38KB
c:\oracle\iSuites\BIN 87KB
I check the Registry (regedit) and found that I have ORACLE_HOME_KEY for ora81 home, iSuites home, but not
806 home. And there are oracle.key files in c:\oracle\ora81\bin, c:\oracle\806\bin, c:\oracle\isuites\bin .
The contents of oracle.key in c:\oracle\ora81\bin and c:\oracle\isuites\bin are correct (i.e. "Software\ORACLE\HOME0" "Software\ORACLE\HOME2" respectively.) However, the content in c:\oracle\806\bin is "Software\ORACLE" .
Will this be a problem because there is no corresponding ORACLE_HOME_KEY for 806 in regedit?
OR
the OCI.DLL file is corrupted in one of the above directory.
Below is the JSP code that I ran. Before that, my HTTP server is started correctly.
I really appreciate if someone could give me some pointers about this.
Thanks;
Kelly.
<%@ page language="sqlj"
import="sqlj.runtime.ref.DefaultContext,oracle.sqlj.runtime.Oracl
e" %>
<HTML>
<HEAD> <TITLE> The SQLJQuery JSP </TITLE> </HEAD>
<BODY BGCOLOR="white">
<% String empno = request.getParameter("empno");
if (empno != null) { %>
<H3> Employee # <%=empno %> Details: </H3>
<%= runQuery(empno) %>
<HR><BR>
<% } %>
<B>Enter an employee number:</B>
<FORM METHOD="get">
<INPUT TYPE="text" NAME="empno" SIZE=10>
<INPUT TYPE="submit" VALUE="Ask Oracle");
</FORM>
</BODY>
</HTML>
<%!
private String runQuery(String empno) throws
java.sql.SQLException {
DefaultContext dctx = null;
String ename = null; double sal = 0.0; String hireDate = null;
StringBuffer sb = new StringBuffer();
try {
dctx = Oracle.getConnection("jdbc:oracle:oci8:@", "scott",
"tiger");
#sql [dctx] {
select ename, sal, TO_CHAR(hiredate,'DD-MON-YYYY')
INTO :ename, :sal, :hireDate
FROM scott.emp WHERE UPPER(empno) = UPPER(:empno)
sb.append("<BLOCKQUOTE><BIG><B><PRE>\n");
sb.append("Name : " + ename + "\n");
sb.append("Salary : " + sal + "\n");
sb.append("Date hired : " + hireDate);
sb.append("</PRE></B></BIG></BLOCKQUOTE>");
} catch (java.sql.SQLException e) {
sb.append("<P> SQL error: <PRE> " + e + " </PRE> </P>\n");
} finally {
if (dctx!= null) dctx.close();
return sb.toString();
%>

Hi Jim,
I have the same environment with almost similar problem, no IIS services being started, but HTTP_Server still failed to start. Below log:
+10/09/28 23:35:04 Start process+
+[Tue Sep 28 23:35:06 2010] [warn] pid file c:/oracle/frhome_1/apache/apache/logs/httpd.pid overwritten -- Unclean shutdown of previous+
Apache run?
ap_spawn_child: Bad file descriptor
Couldn't fork child for piped log process
Regards,
Chai
Edited by: user13350226 on Sep 28, 2010 9:14 AM

CNR 7.01 DHCP server cannot start

Hi,
I have problem with my CNR installation. DHCP server cannot be started.
Bad id or server not loaded is reported error. Also when I try to make some changes that require reload i get this error message:
Error code 0x8000c003 was returned while executing task ReloadDhcpServer_admin_684405.
Does anyone get an idea on what happen, or what i made wrong ?
Regards,
Srdjan

all the four machines are four containers in a solaris server.
The problem was with the hosts file, there were not entries matching the ipaddress and the hotname.
After i fixed it now i have a stable BI servers and cluster controllers.
Now i configured the presentation services to connect to the BI servers but i am getting the following exception.
Type: Error
Severity: 42
Time: Thu Aug 6 13:04:02 2009
File: project/webcomm/socket.cpp Line: 892
Properties: ThreadID-6
Location:
saw.rpc.client.impl.verify
saw.rpc.client.impl.initFixedRPC
saw.rpc.client.cluster
saw.threads
An error occurred during execution of "connect". Connection refused [Socket:15]
Any idea?
thanks

Multiple LV instances, web server cannot start, port already in use

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