Apex listener compatibility with VMware

We have APEX listener configured on Tomcat server. There is a plan to move the tomcat server to virtual machines (VMware based). Migration will be made using Physical to Virtual (P2V) migration tools.
Application Express 4.0.2.00.07 is installed on Database server.
Software installed on Tomcat server:
•     Windows 2008
•     TomCat v 6.0
•     Java version "1.6.0_25"
•     Java(TM) SE Runtime Environment (build 1.6.0_25-b06)
•     Java HotSpot(TM) 64-Bit Server VM (build 20.0-b11, mixed mode)java
Is the virtual platform supported by Oracle?
What could be problems if we move to virtual machines instead of current physical machine for Tomcat?
Is there any Oracle documentation related to this?

Assuming the VM environment is set up correctly, it should be totally transparent whether the underlying infrastructure is virtual or physical.
However*, two observations...
1. TomCat is not an option for the Oracle APEX listener. Valid options are GlassFish, Weblogic or Oracle OC4J (http://www.oracle.com/technetwork/developer-tools/apex-listener/documentation/index.html). So, I don't think that you really have the APEX Listener running under TomCat. Do you mean that you have the mod_plsql for Apache configured to connect to APEX (do you see a "pls" in the URL to your APEX Server)? If so, this isn't actually the APEX Listener. It's just a (supported) configuration of Apache.
2. Whether it will work without an issue and whether it is actually supported are different questions. I don't think Oracle will officially support VM implemented products unless the underlying VM is Oracle's own (rather than, for example, VMWare). I think you would probably still get good, (unofficial!), answers in this forum but, Oracle might tell you to get bent if you opened a tar.
-Joe

Similar Messages

APEX Listener on Weblogic licensing - SE or EE

Does the APEX listener on Weblogic use any Weblogic Enterprise Edition features like clustering or is Weblogic Standard Edition good enough? I'm assuming you would need to license Welogic for the APEX listener right?
Also do we have any sizing guidelines for APEX listener on Weblogic. The real question is if the APEX application we have met our SLA's on a 1 CPU box, without the APEX listener, after migrating to Weblogic - APEX Listener, would we be needing more, less or the same CPU capacity.

Hello,
the APEX Listener itself is stateless, so you can cluster it easily if you want or have to.
APEX Listener is licensed with APEX, not with WLS. You can use a variety of J2EE containers that meet the requirements. In addition to WLS, Oracle supports the use of OC4J (either part of OAS or standalone) and GlassFish. In fact, the APEX Listener ships with an embedded version of GlassFish.
Despite the support aspect, there are people who successfully run the Listener on the GlassFish's Open Source Edition or Apache Tomcat.
Concerning your SLAs: The Listener will do something for you, so of course it will need the CPU. How much load it will generate depends on your usage scenario. Your post sounds like you already use APEX with a different web server than the Listener. If that guess is right, it would be helpful to know which web server you use now and how much CPU time it consumes.
-Udo

Apex Listener and Apex .3.2.1

Does Apex Listener work with Apex 3.2.1? May be I missed it, I can't find any info in the document.

Short question, short answer: It does.
The documentation for the APEX Listener doesn't refer to any special APEX version. The fact that the APEX documents only name the APEX Listener from APEX 4.0 onwards is due to the APEX Listener not being available before that release.
We have it running with APEX instances from 3.1 onwards, but I assume you could use it even for older versions.
-Udo

Is the APEX Listener IPV6 Compatible ?

Hi,
Is the APEX Listener compatible with IPV6 ?
Thanks
Francis.

Avi Miller wrote:
user503699 wrote:
I am trying to find out how the APEX Listener is configured to start when the machine is started. Following are the details of the APEX listener process:It starts from /etc/rc.d/init.d/oracle-xe most likely (if you're running the XE database), as it is configured to startup with the XE listener.Hello Avi,
Thanks a lot for your help.
I am not running Oracle XE but the pre-configured "Oracle Developer Days" database vm. However, your suggestion was spot-on and I was able to find the call to start the listener in /etc/rc.d/init.d/oracle.
p.s. For some reason, I am not able to mark your answer as "Correct" or mark this question as "Answered". Probably something to do with the way moderator has created this thread.
Edited by: user503699 on Feb 20, 2012 3:27 PM

APEX Listener with APEX 3.0 on 11gR2

Yes, I am crazy.
We have many many APEX applications in APEX 3.0 running on a 10.2.0.4 database that needs desperately to be upgraded. As a test, I've set up a clean 11gR2 database and copied the production APEX database into it via datapump. I set up APEX Listener, as I don't have any OAS sitting around and the EPG doesn't seem to be supported for APEX 3.0... the Listener doesn't say one way or the other.
When trying to log in, I get the login page, but it tries to reference files such as apex_get_3_1.js while I only have files such as htmldb_get.js in my images directory in production. I noticed it is looking for what appears to be 3.1 files instead of 3.0 files... which concerns me.
The APEX listener appears to be more than just a Java PL/SQL gateway.
Is there a minimum version of APEX the APEX Listener supports?
Interested in pointers!
Rob

Hi Rob,
Yes, I am crazy.Why would that be? ;)
We have many many APEX applications in APEX 3.0 running on a 10.2.0.4 database that needs desperately to be upgraded. As a test, I've set up a clean 11gR2 database and copied the production APEX database into it via datapump. I set up APEX Listener, as I don't have any OAS sitting around and the EPG doesn't seem to be supported for APEX 3.0... the Listener doesn't say one way or the other.APEX 3.0 is supprted by EPG. See the [url http://docs.oracle.com/cd/B32472_01/doc/install.300/b32468/post_inst.htm#CHDBEJDA]APEX 3.0 Installation Guide for details.
APEX Listener is capable of hosting APEX 3.0 as well, though APEX 3.0 wasn't supported anymore when APEX Listener was initially released. The current APEX release at that time was 4.0, so this would be the first version to be known as really stable, whereas you won't get any support for older releases anymore. From personal experience I know that there are now issues with APEX 3.1 and APEX Listener, so it'll probably also work with 3.0.
Concerning your database release, the minimum for APEX Listener is 10.2.0.3, so you're definetly safe on that part, though I'd recommend to upgrade as regular support for 10.2 databases ended.
When trying to log in, I get the login page, but it tries to reference files such as apex_get_3_1.js while I only have files such as htmldb_get.js in my images directory in production. I noticed it is looking for what appears to be 3.1 files instead of 3.0 files... which concerns me.This indicates that your APEX would actually be a 3.1 and you should update you images directory.
The APEX listener appears to be more than just a Java PL/SQL gateway.It is, but this has nothing to do with your 3.1 JS files, if this is why you stated this.
Is there a minimum version of APEX the APEX Listener supports?As mentioned above, 4.0 would be a safe approach, but 3.1 will definetly work, 3.0 probably will as well. I'd recommend you find out which APEX version is actually installed on your database before you consider any upgrade operations. Run the following query as privileged user:
SELECT comp_name, version, status
FROM dba_registry
WHERE comp_id = 'APEX';-Udo

APEX Listener with Free environment

Hi,
I was going through APEX Listener Installation guide and found that the supported installations are
*1) with WebLogic*
*2) Glassfish &*
*3) OC4J*
All of the above are associated with licensing cost. Is there any free installation scenario? As 11gXE is free to store upto 11GB of user data, I was thinking to install it with Glassfish for my small application which is not expected to have 11GB of user data over the next 4-5 years. Today I had a chat with one of the local Oracle Sales guy and I found that licensing cost is huge for Glassfish.
I don't know whether standalone APEX Listener will serve the purpose of having my application available over the internet. Please forgive me; I am a novice in the field of networking.
Could you please provide me the details of the free or low cost alternatives of the above scenarios? One option I know is to go for hosting services for low cost. But to me that is also huge.
Any kind of help is appreciated.
Thanks,
Mehabub

Hi,
I was going through APEX Listener Installation guide and found that the supported installations are1) with WebLogic
2) Glassfish &
3) OC4J
All of the above are associated with licensing cost. Is there any free installation scenario? As 11gXE is free to store upto 11GB of user data, I was thinking to install it with Glassfish for my small application which is not expected to have 11GB of user data over the next 4-5 years. Today I had a chat with one of the local Oracle Sales guy and I found that licensing cost is huge for Glassfish.
I don't know whether standalone APEX Listener will serve the purpose of having my application available over the internet. Please forgive me; I am a novice in the field of networking.
Could you please provide me the details of the free or low cost alternatives of the above scenarios? One option I know is to go for hosting services for low cost. But to me that is also huge.
Any kind of help is appreciated.>
Supported in this context is supported by Oracle in that you can open an SR with support.oracle.com or not.
ApexListener runs on most J2EE Containers. Free ones include GlassFish Community Server and Tomcat. ApexListener runs on GF as well as Tomcat, but you cannot run to Oracle Support if you have an issue. You have to seek help here, on this forum, if you cannot resolve things yourself :(
Cheers,

Apex Listener return blank pages with no configuration errors!

- I set up an Apex Listener "Version:1.1.3.243.11.40" at "10.0.114.11" in standalone mode.
- I configured Apex Listener via http://10.0.114.11:8585/apex/listenerConfigure and return with no errors.
- I get http://10.0.114.11:8585/apex/listenerStatus, it returned this:
Current Time:     Tue Dec 13 17:06:32 ICT 2011
Server Uptime:     0 Days 01:10:14.101
Total Accesses:     38.0
Total Traffic:     161.34K
Total Errors:     0
Total File Downloads:     0
Total Processing Time:     0 Days 00:00:09.354
Processing Time in milliseconds:     Minimum: 20 Average: 246 Median: 64 Maximum: 3062
Database Time in milliseconds:     Minimum: 14 Average: 61 Median: 50 Maximum: 204
Active Requests:     0
Connections in the pool apex:
Active: 0 Available: 1
But when I go to "http://10.0.114.11:8585/apex" or "http://10.0.114.11:8585/apex/apex_admin", I got blank pages.
The page displays "Application Express Login" or "Application Express Administration Services" in the tab at the top of IE, but nothing else. Anyone have any ideas what could be happening here ?
thanks so much,

Hi Udo!
I run apex_listener with this below command and the output is that:
java -Dapex.home=/tmp/apex -Dapex.images=/tmp/apex/apex/images -Dapex.port=8585 -Dapex.erase -jar /source_install/apex_listener.1.1.3.243.11.40/apex.war
INFO: Starting: /source_install/apex_listener.1.1.3.243.11.40/apex.war
See: 'java -jar apex.war --help' for full range of configuration options
INFO: Extracting to: /tmp/apex
INFO: Using classpath: file:/tmp/apex/apex/____embedded/start.jar:file:/tmp/apex/apex/WEB-INF/lib/poi-3.6-20091214.jar:file:/tmp/apex/apex/WEB-INF/lib/commons-fileupload-1.2.1.jar:file:/tmp/apex/apex/WEB-INF/lib/je-4.0.103.jar:file:/tmp/apex/apex/WEB-INF/lib/apex.jar:file:/tmp/apex/apex/WEB-INF/lib/ojmisc.jar:file:/tmp/apex/apex/WEB-INF/lib/ucp.jar:file:/tmp/apex/apex/WEB-INF/lib/xdb-11.2.0.jar:file:/tmp/apex/apex/WEB-INF/lib/xmlparserv2-11.2.0.jar:file:/tmp/apex/apex/WEB-INF/lib/ojdbc6.jar:
INFO: Starting Embedded Web Container in: /tmp/apex
Dec 13, 2011 6:40:22 PM ____bootstrap.Deployer deploy
INFO: Will deploy application path=/tmp/apex/apex/WEB-INF/web.xml
Dec 13, 2011 6:40:22 PM ____bootstrap.Deployer deploy
INFO: deployed application path=/tmp/apex/apex/WEB-INF/web.xml
Using config file: /tmp/apex/apex-config.xml
-- listing properties --
PropertyCheckInterval=60
ValidateConnection=true
MinLimit=1
MaxLimit=10
InitialLimit=3
AbandonedConnectionTimeout=900
MaxStatementsLimit=10
InactivityTimeout=1800
MaxConnectionReuseCount=1000
APEX Listener version : 1.1.3.243.11.40
APEX Listener server info: Grizzly/1.9.18-o
Dec 13, 2011 6:40:23 PM com.sun.grizzly.Controller logVersion
INFO: Starting Grizzly Framework 1.9.18-o - Tue Dec 13 18:40:23 ICT 2011
INFO: http://localhost:8585/apex started.
Using JDBC driver: Oracle JDBC driver version: 11.2.0.2.0
I don't know how to "could you please check if you configured the directory for the static contents ("images") correctly"
because the Installation Guide of Oracle about Install Apex in standalone mode do not tell me to configure images any more. I just run apex listener with above command "java -Dapex.home=/tmp/apex -Dapex.images=/tmp/apex/apex/images -Dapex.port=8585 -Dapex.erase -jar /source_install/apex_listener.1.1.3.243.11.40/apex.war".
Thank you for your reply,Udo!

Apex Listener/Apache Tomact and filenames with spaces

I've installed the Apex Listener with Apache Tomcat, and all seems to work fine. Except when I try to do a CSV file data upload via the utilities screen in apex. If the filename/directory path contains spaces, then Apex reports "File Must Be Specified" error - yet if I do this same operation via EPG instead of Tomcat, it works. Are there any restrictions in Tomcat to using spaces??

Look at this thread. Re: File upload problem
regards.

APEX Listener 2.0 - RESTful Services Failure with 404 - Not Found

Versions used:
* APEX Listener 2.0.0.354.17.05
* Application Express 4.2.1.00.08
* Oracle Database 11.2.0.1
When testing the sample RESTful Service Module oracle.example.hr I always get 404 - Not Found page.
I followed the documentation to install and configure APEX 4.2 and the Listener 2.0. Everything in my APEX installation works fine except RESTful Services.
For example, when calling this RESTful Service:
http://company.com:45678/apex/DEV/xxuapex/hr/empinfo/
I get a 404 page.
The corresponding entry in url-mapping.xml is:
<pool base-path="/DEV" name="od01" workspace-id="xxuapex"/>
where xxuapex is the name of the schema as well as the workspace where the RESTful Service is installed.
Moreover, the corresponding od01.xml, od01_rt.xml and od01_al.xml in the conf directory seem correct.
Any help is greatly appreciated.
Thanks.
Eddie Awad.

Hi Eddie,
+> try the other option base-url of the url-mapping+
I did. No change. Still getting 404.When active it should transform the 404 page into a detailed 404 with a description of what the error is. Just to be sure, this is activated in the defaults.xml file of the APEX Listener as: *<entry key="log.logging">true</entry>*.
You should then see a detailed 404 output in your browser of what's going wrong first of all.
+> Could you post your url-mapping.xml file?+
<?xml version="1.0" encoding="UTF-8"?>
<pool-config xmlns="http://xmlns.oracle.com/apex/pool-config">
<pool base-path="/DEV" name="od01" workspace-id="xxuapex"/>
<pool base-path="/TEST" name="ot01" workspace-id="xxuapex"/>
</pool-config>
Despite using the url mapping script, it didn't map mine correctly and had to edit it manually. It was the use of "apex" that got it to work for me:
*<pool base-path="/" name="apex" workspace-id="workspace-name-here" updated="2013-01-09T20:48:59.75Z"/>*
Nick.

APEX Listener 1.1.4 install issue with listener configuration

Oracle XE 11gR2
APEX 4.1.1
APEX Listener 1.1.4
Glassfish 3.0.1
=============
Installing APEX Listener 1.1.4 to replace APEX Listener 1.0.2. Deployed apex.war file but now:
(1) http://10.10.1.111:8080/apex/listenerConfigure web page comes up but with no frames/windows rendered, as if it can not find images. Still I can enter data into fields. Wonder why the graphics/images are missing when page is rendered.
(2) after entering Listener connection information for user APEX_PUBLIC_USER, I get "Permission denied". I can connect via SQL Developer to APEX_PUBLIC_USER with same credentials. I was able to connect before with previous APEX Listener.
Any ideas?

Hi,
(1) http://10.10.1.111:8080/apex/listenerConfigure web page comes up but with no frames/windows rendered, as if it can not find images.
You either have to clean your browser cache or your browser is too old/not capable of rendering the css of APEX Listener correctly.
(2) after entering Listener connection information for user APEX_PUBLIC_USER, I get "Permission denied". "Permission denied" doesn't sound an issue with your database configuration. Do you have anything in your APEX Listeners log (probably within your GFs server.log) for that issue?
But perhaps the error disappears as soon as you also get a proper configuration page.
-Udo

Generate pdf with apex listener 2.0

hi,
we would like to generate pdf out of apex.
as long as we have text (IRR) WITHOUT special characters (öäü), everything is working fine.
when we have this characters in a text-columng (IRR), then we get a .pdf with the following content:
javax.xml.transform.TransformerException: com.sun.org.apache.xml.internal.utils.WrappedRuntimeException: An invalid XML character (Unicode: 0x3) was found in the element content of the document.
could this be a problem of the characterset? but if, where to change what?
- we defined in ADMIN in 'report printing' / 'instance-settings': oracle-apex-listener
- we are working with apex-listener 2.0 (integrated in weblogic-server)
- we work with APEX 4.2.1.00.08
thanks for any ideas
roland
Edited by: user514151 on 01.04.2013 23:24

I have this same problem with windows-1250 encoding.
Invalid byte 1 of 1-byte UTF-8 sequence.
com.sun.org.apache.xerces.internal.impl.io.MalformedByteSequenceException: Invalid byte 1 of 1-byte UTF-8 sequence.
     at com.sun.org.apache.xerces.internal.impl.io.UTF8Reader.invalidByte(UTF8Reader.java:687)
     at com.sun.org.apache.xerces.internal.impl.io.UTF8Reader.read(UTF8Reader.java:557)
     at com.sun.org.apache.xerces.internal.impl.XMLEntityScanner.load(XMLEntityScanner.java:1753)
     at com.sun.org.apache.xerces.internal.impl.XMLEntityScanner.skipChar(XMLEntityScanner.java:1426)
     at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2754)
     at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:607)
     at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:116)
     at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:489)
     at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:835)
     at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:764)
     at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:123)
     at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1210)
     at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:568)
     at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl.parse(SAXParserImpl.java:302)
     at javax.xml.parsers.SAXParser.parse(SAXParser.java:195)
     at oracle.dbtools.apex.fop.FOPUtils.fop2pdf(FOPUtils.java:72)
     at oracle.dbtools.apex.hooks.postProcess.FOP2PDF.requestTOPDF(FOP2PDF.java:87)
     at oracle.dbtools.apex.hooks.postProcess.FOP2PDF.postProcess(FOP2PDF.java:49)
     at oracle.dbtools.apex.hooks.ProcessorRegistry.postProcess(ProcessorRegistry.java:56)
     at oracle.dbtools.apex.ModApex.handleRequest(ModApex.java:241)
     at oracle.dbtools.apex.ModApex.doGet(ModApex.java:98)
     at oracle.dbtools.apex.ModApex.service(ModApex.java:316)
     at oracle.dbtools.rt.web.HttpEndpointBase.modApex(HttpEndpointBase.java:260)
     at oracle.dbtools.rt.web.HttpEndpointBase.service(HttpEndpointBase.java:110)
Any solution ?
Regards
md

Cache and Load Balancing with Oracle APEX Listener

Hi,
I intend to use only HTTP access.
How to implement a Cache and Load Balancing with the Oracle APEX Listener?
Is it possible to do with the the standalone running APEX Listener?
Thanks by advance for any tips/documentation/references.
Kind Regards.

Hi,
I think this question is best asked in the APEX Listener forum:
ORDS, SODA & JSON in the Database
Kind regards
Sandro

Upgrading from Apex 3.2.1 (mod_plsql) to Apex 4.0 with Oracle Listener

Hi,
We have some applications developed in Apex 3.2.1 (which is mod_plsql) that have not been moved into Production yet. We are planning to upgrade to Apex 4.0 with Oracle Listener as soon as they are available (we don't want to turn on mod_plsql on any web server). What will be the migration process? Will my applications function and look the same when I open them in Apex 4.0? Will any functionality, formatting, etc. be lost?
I heard that there is a Migration Assistant but there is not much information available.
When Apex 4.0 and Oracle Listener will be released? Summer 2010?
I would appreciate all the information that you have about this.
Thanks,
Violeta

A new dedicated OTN Forum has been set up for the APEX Listener: ORDS, SODA & JSON in the Database
Please use this forum for all future APEX Listener posts.
Regards,
David

How-to install FOP in Apex Listener 2.0 with glassfish

Hi,
I need to develop a PDF report in APEX 4.2.1. I want to use FOP. My setup is Apex Listener 2.0, Glassfish 3.1.2. According to the documentation, I should be able to use FOP with that setup. But there's no documentation that explain how to install/configure FOP with Apex Listener 2.0
Thanks
Etienne

Please check below link.... i hope its work....
https://kr.forums.oracle.com/forums/thread.jspa?threadID=2369725&tstart=45
http://matthiashoys.wordpress.com/2012/05/04/configuration-and-deployment-of-pdf-printing-in-apex-4-1-1-using-glassfish-3-1-2-and-apache-fop/
Best Regards,
Shishir Tekade.
My Blog: http://shishirtekade.blogspot.com

Interactive Reports not working with APEX listener

Hi,
I have posted this question APEX listener forum couple of weeks ago but very few responses.
If any one from here can help then it would be great.
Interactive Reports not working with APEX listener
Best Regards,
Baig

Sorry for late response.
It was a firewall issue

Apex listener compatibility with VMware

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