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  • We have moved to kindly check http://onlineAppsDBA.comin future
    Oracle Apps Web Server Apache, Login Troubleshooting
    Sunday, October 15, 2006
    Register for R12 upgrade
    This week I will focus on troubleshooting of Oracle Apps and there are fundamentals of troubleshooting :
    - You should know about that particular component
    - log files are quite powerful and important in finding cause of problem
    - try to understand flow between various components

    For Oracle Applications Web Server which is build on Apache 1.3..X version and also called as Oracle-Apache . Oracle Apps Web Server bundled with Applications is version but you can also install & configure 10g Application Server Version. In this post I 'll focus on Web Server Version only .

    Most of the things about Web Server ( Oracle-Apache Server ), I have already covered in my site at

    If you don't understand any topic on above four pages then drop a mail to me or leave a comment here .

    So when you try to access login page via URL http://hostname.domainname:portnumber
    and if you don't see page you need to look into log files . As you know there are two main component of Web Server Core Apache & Jserv ( for Java requests)
    Core Apache Log Files
    Core Apache log files are in directory $IAS_ORACLE_HOME/Apache/Apache/logs
    - error_log or error_log.$timestamp
    - error_log_pls or error_log_pls.$timestamp

    Jserv Log files
    Jserv log files are in directory $IAS_ORACLE_HOME/Apache/Jserv/logs
    and JVM ( Java Virtual Machine ) logs at $IAS_ORACLE_HOME/Apache/Jserv/logs/jvm

    Check if you see any error message in Jserv/logs mod_jserv.log or jserv.log.
    jserv.log by default is disabled so if you want to find any error message w.r.t. jserv.log then change log=false to log=true in jserv.properies and bounce webserver/apache using and check any error message.

    When you start Apache you should see clean start up of Web Server & no error message in this log files.

    Common Problems in Starting Apache
    Here is the list of common problems while starting web server which might be useful to you in appsdba Interview are
    - Could not bind port (Port already in Use)
    - found .pid file ( When Apache starts it creates .pid file in logs directory and when you shutdown apache it cleans this .pid file so if this file is already there then Apache will not start. Fix: Simply move this file
    If there is no error messages in error_log or error_log_pls then there might be issues in starting Jserv component of web server ( which caters Java requests by mod_jserv)
    - mobile is enabled in disable it if you are not using it .

    If you mistype any directive in Apache ( httpd.conf or any conf file ) Apache will not start & it will not write even in error_log in that case it will report any error message related to mis configuration in directive in file $COMMON_TOP/admin/log/$CONTEXT_NAME/adapcctl.txt

    I hope once you have error message you can check related hits in metalink or oracle forums or any other Apps Forum. Most of the error message are because of changes , so check what changes you made recently.

    Once you are able to access http://hostname.domainname:port and if you are getting any error message that means your web server ( Core Apache ) is working but there are various component called as modules and there may be issues with those modules which we will check these modules in next post. few modules of our interest are
    -mod_ossl (If you have ssl enabled on web server )
    -mod_osso (If single sign on server is enabled on web server)

    If you don't know port number of your web server you can check it in file $IAS_ORACLE_HOME/Apache/Apache/conf/httpd.conf with directive Listen & Port

    Your Feedback is quite important to me so please leave feedback on How you rate this post ( Can you understand it or its too basics, too tough, too technical ? if you want me to include some tips on troubleshooting then leave a comment or drop mail at )

    Labels: ,

    We have moved to

    kindly check in future

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    posted by Atul Kumar @ 8:07 PM  
    • At 5:16 AM, Anonymous Anonymous said…

      Hi Atul
      please check this page is not working
      Thanks & Regards

    • At 6:39 AM, Anonymous Anonymous said…

      Hi Atul,

      Can you please dwell more into the files like oprocmgr.conf and other apache related files.


    • At 7:32 AM, Blogger Atul Kumar said…

      Naga, thanks a lot for your suggestion.

      Configuration files in Apache are listed on my site at Apache conf files Do let me know if you need more info and I'll update it for you .


    • At 7:37 AM, Blogger Atul Kumar said…

      For me link apc02.html is working . Could you please try again & let me know what error message you are getting.

    • At 8:50 AM, Anonymous Anonymous said…

      Hi Atul,

      Can you please also discuss about Workflow Mailer setup? Or please do let me know the link if you have already discussed it elsewhere.


    • At 10:10 AM, Blogger Atul Kumar said…

      Nice suggestions. I thought of discussing it past but slipped from my mind . Now I have save it under list of to be published .

      Keep suggesting .


    • At 3:14 PM, Anonymous lotfi said…

      i user mod_jserv Module and i would add a Jserv Server to the CoreGroup one. how to ?

    • At 3:34 PM, Blogger Atul Kumar said…

      You can Use OANM or Just edit context xml ,

      $APPL_TOP/admin/$CONTEXT_NAME.xml & change parameter

      oacore_nprocs oa_var="s_oacore_nprocs"1/oacore_nprocs

      From 1 to 2 for 2 processes

      oacore_nprocs oa_var="s_oacore_nprocs"2/oacore_nprocs

      This is for OACore Group, Similarly you can increase for Disco Group

      disco_nprocs oa_var="s_disco_nprocs" osd="Solaris"1/disco_nprocs

      After that run Autoconfig.

      For any Issues / doubts raise question at forum

    • At 6:22 AM, Anonymous Anonymous said…

      Hi Atul,

      Can you explain about functionality and purpose about main configuration files for apache..(,,httpd.conf,httpd_pls.confetc) in detail
      Jagatheesh R

    • At 7:33 AM, Blogger pkraj17 said…

      hi Atul,

      why we need to bounce apache regularly & why the processes gets runaway.


    • At 10:41 AM, Blogger Atul Kumar said…

      You don't have to bounce apache regularly unless there is some issue like Java memory leaks or any other problem.

      There might be bugs in any of standard or custom program because of this it becomes runaway or there may be other reasons like some one (user or other process) terminated underlying database process.

    • At 2:24 PM, Blogger VJ said…

      Hi Atul,
      Can i know where i can download only Oracle HTTP Server.I dont want complete Oracle Application Server but i want only Oracle HTTP Server.

    • At 7:23 PM, Blogger Atul Kumar said…

      You can install only HTTP Server from Oracle Application Server Companion CD at

      (Its in bottom of page)

    • At 10:56 AM, Blogger jyotirmay said…

      Dear Atul;

      While running TXKScripts in the
      database Tier
      Throwing Error:
      Invalid Command (Core Dump)
      Pl Suggest me in Resolving the same.
      Thanks / Regards

    • At 6:37 PM, Blogger Atul Kumar said…

      Kindly raise it in forum at with syntax you are using while running this command

    • At 11:38 AM, Blogger Nik_Zensarian said…

      Hi Atul,

      Could you please let me know some of the reasons why would apache tomcat server get bounced?

      Thanks in Advance!

    • At 11:39 AM, Blogger Nik_Zensarian said…

      Hi Atul,

      Could you please let me know some of the reasons why would apache tomcat server get bounced?

      Thanks in Advance!

    • At 5:17 PM, Anonymous Anonymous said…

      Hi Atul,

      Can you tell me where to check log files if you can't get into the instance ex: http://mydomain:portnumber/


    • At 1:04 PM, Blogger Atul said…

      Hi Atul,

      i an having intermenent error of JSP in oracle 11i, not allowing to open ERP, but after 2 -3 refresh it started automatically.

      Thanks & Regards,

    • At 8:58 AM, Blogger Sumant said…

      Oracle Application Express (Oracle APEX), formerly called HTML DB, is a rapid web application development tool for the Oracle database. Using only a web browser and limited programming experience, you can develop and deploy professional applications that are both fast and secure. Oracle application express combines the qualities of a personal database, productivity, ease of use, and flexibility with the qualities of an enterprise database, security, integrity, scalability, availability and built for the web. Application Express is a tool to build web-based applications and the application development environment is also conveniently web-based.

      Recently I just came across a good articles on " Windows Server"
      Here is its link.

    • At 9:32 AM, Blogger Y V Haranath said…

      Oracle applications E business suite 11i was working fine before, but i tried to install my new laptop. I am getting the following error after logging into SYSADMIN.

      I have installed the plugin required in the mozilla/plugins folder and started all the listeners.

      Thank you.

    Post a Comment
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