Presentation Server (Web) Cache  Size

Hi ,
Where one can define the SIZE of Presentation Server (Web) Cache?
Thanks
~ Ash

See =>
http://hekatonkheires.blogspot.com/2010/02/obiee-10g-presentation-server-cache.html
Useful?
R.

Similar Messages

  • Can Web Cache rewrite HTTP_REFERER headers?

    Can Web Cache be configured to rewrite the HTTP_REFERER header to replace the Web Cache site address:port with the dispatched application server address:port?
    i.e.
    If there is a Web Cache site listening on webcache.domain:80 and it is mapped to application servers: appserver1.domain:7778 and appserver2.domain:7778.
    And a user requests page webcache.domain/page1, which contains a link to page2.
    And then the user opens the link to page2, and Web Cache decides to send the request on to appserver2.
    Can Web Cache be configured to change the HTTP_REFERER header from webcache.domain/page1 to appserver2.domain/page1?
    This is important to our application, because we want to verify that our processing pages are invoked from our application validation pages (we know this method is not 100% tamper proof).
    We would prefer to not have to change our application code to support Web Cache
    Thanks for any info or suggestions, -Steve

    Thanks Jean
    I've added comments to extracts from your post.
    Let's say you suddenly get a request for p2, even if
    it was from the history of the browser, it would still
    contain a referer header of p1, and is no different
    from what it would be when the user was going through
    the proper steps? Are you saying the p2 generated from
    your JavaScript will have a different referer from the
    p2 generated from browser history? If so, how are they
    differ exactly?The browser history does not include the referer. So p2 requested from the history list does not include a referer although the original link from p1 did.
    Without Web Cache, the flow is:
    Step 1: a user requests appserver/page1. page1 is added to the browser history. page1 is loaded and executes JavaScript to display page2 in an iFrame. page2 is not added to the browser history (just like style sheets and other embedded requests do not get included in the history). page2 is loaded and executes JavaScript to submit an html form to load page3 into a hidden iFrame and wait for it to load. page3 is added to the browser's history becuase it was submitted; not embedded. Assuming that the request for page1 came from the browser's history, favorites, a link from an e-mail (the usual for us), or was entered manually - there will be no referer for page1. The expected referer for page2 is appserver/page1, and the expected referer for page3 is appserver/page2.
    Step2: while processing page3, the application compares the server name in the requested URL (appserver/page3) with the server name from the referer URL (appserver/page2), if the servers match, page3 accesses the database and sends the requested data to the browser
    Step3: JavaScript in page2 detects that page3 has loaded, interprets the results from page3, updates the content displayed by page2, and returns control to the browser user
    Since this works with your app, how is webcache in
    front going to break it? Note that when passing a
    request
    to the app server, web cache does not modify the
    host header in the request.without Web Cache the browser sends requests directly to the appserver, so the request/referer entries seen by the application look like:
    appserver/page1 -
    appserver/page2 appserver/page1
    appserver/page3 appserver/page2
    with Web Cache the browser sends requests to webcache, so the request/referer entries seen by the application look like:
    appserver/page1 -
    appserver/page2 webcache/page1
    appserver/page3 webcache/page2
    This is because the Web Cache changed the request URL and did not change the referer URL.
    So request to webcache.domain/abc will be sent to your
    app server as is.I don't think so, doesn't the requested URL change as a result of the Web Cache mapping? i.e. webcache.domain/abc --> appserver.domain/abc
    And since we do not change the referer
    header, either, whatever works for your app now should
    still work for you with webcache in front. This is
    assuming you only do comparisons on the 2 hosts to see
    if they are the same. Web Cache is changing one (request URL) of the two items (request URL and referer URL) that the application server compares.
    The reason has been that we are
    a cache, and in principal should be as transparent
    as possible, so we try to stay away from app-sever/
    apache like functionality.I support that principle 100% - from the application server perspective, it should not need to differentiate between a request directly from a browser, and a request that was issued by the cache on behalf of a browser.
    The cache should completely pretend that it is the originating browser. A browser sends the request and the referer URLs. In application flow, a relationship can be inferred/required between the two URLs. Web Cache is changing one without changing the other and breaking the relationship that the application server would normally expect.
    But I'm still
    not convinced that you need that in webcache. :)If we want to use Web Cache in front of this application, without changing the application, then we need it. :)
    Of course, we could change our application, but the more I think about the principles involved, the more I believe that it is the cache that needs changing. However, I will take another look to see if there are other standard headers related to a request that are present with and without Web Cache, and that can be used to reliably compare the server in the request URL with the server in the referer URL. If there are, then I can happily change our application so that it will work with or without Web Cache.
    -Steve

  • OBIEE 10g: Presentation Cache in Second Instance of Presentation Server

    Hi everyone,
    I've been having an issue with my presentation cache disappearing every couple of minutes.
    I'm working with OBIEE 10.1.3.4, on Oracle Application Server on a Linux RHEL 5.4 32bit. I've spun up a second instance of the presentation service using the commands from RNM1978's blog here (http://rnm1978.wordpress.com/2009/08/25/multiple-rpds-on-one-server-part-2-presentation-services/). The reason why I have a second instance of the presentation service is for mobile reporting purposes. We have lots of executives using iPhones and the Oracle Business Intelligence Indicators application. The second instance defaults all charts to be PNGs, it also uses a separate, clean catalog, so that the executives don't get lost in all of the out of the box BI Applications content that is in our main catalog.
    Everything is setup and working properly, both presentation services are accessible and use the same RPD but different catalogs. The only thing that isn't working is the presentation service cache. A lot of these reports are QTD or YTD so it takes a few minutes to run some. We were hoping to use iBots to create BI Server cache at the beginning of the day. That seemed to help a bit but it seems to clear after a few minutes.
    Additionally, before we went to do demos to end users, we would run all the reports from a demo iPhone. Go to do the demo and within five minutes, the presentation cache would have already cleared. I confirmed the same by looking in the Session Manager of the second presentation service.
    Does anyone know why this would be happening? I have cache turned on in the bi server and I also have the following settings in my instanceconfigMobile.XML:
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    <Query>
    <CacheMaxEntries>1000</CacheMaxEntries>
    <CacheMaxExpireMinutes>720</CacheMaxExpireMinutes>
    <CacheMinExpireMinutes>720</CacheMinExpireMinutes>
    <CacheMinUserExpireMinutes>720</CacheMinUserExpireMinutes>
    </Query>
    </Cache>
    Are there other settings I need to investigate?
    Is this just additional commands I need to run when launching the additional presentation service? Here's the command I'm using:
    . ./common.sh
    . ./sa-init.sh
    sawserver -c /home/oracle/OracleBIData/web/config/instanceconfigMobile.xml >> /home/oracle/OracleBIData/web/log/sawserverMobile.out.log 2>&1 &
    Thanks!
    -=Joe

    Hi Joe
    I can't say I've tried Robin's technique to run two presentation servers but from my basic understanding of it, both versions will share the same cache as defined in a single nqsconfig.ini file. Maybe these 2 are conflicting somehow?
    I see that a separate instanceconfig.xml is used for each presentation server. I know there are a bunch of advanced, largely undocumented, cache properties you can set in there. I can send you a document listing the various properties if you want to play with it - contact me via my website.
    Paul
    http://total-bi.com

  • Web Cache Acess.log Size

    Hi all,
    Windows 2000 Server
    Oracle Application Server 10G
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    access.log of web cache is big (500MB).
    is there any way to keep this file smaller ? kind of rotate logs ?
    if i want to analyze this file i have to load 500MB into notepad :(
    is there anything like UNIX "tail" in windows world ???

    Please check the event log settings namely 'flush interval'. Set this to be very small or diable buffering. Now check it. One possibility is that the event log's size is too small (say it has only 1 or 2 lines in it) to rollover. Also, try restarting Web cache and admin servers and try again.
    Regards,
    Priyanka GES
    Oracle Web Cache Team

  • Determining Report Server Cache Size

    Hello all,
    I would like to know how we should determine the cache size of our report server. We're using Oracle Reports 9i.
    The default is 50 MB and we set it currently at 500MB. Most of our reports have less than 50 pages but may reach more than 100 pages.
    Thanks!
    Aleks

    Hello,
    In : Oracle® Application Server Reports Services Publishing Reports to the Web
    10g Release 2 (10.1.2)
    B14048-02
    3 Configuring OracleAS Reports Services
    engLife number Default: 50
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    engLife=1 may be used in some special cases, where an error occurs after the first execution by an engine .
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  • Standalone webcache or Web cache from Oracle Apps Server 10.1.2.0.2?

    Hi
    I am installing web cache on two servers in web tier and J2EE server (with OHS) on another two servers in apps tier. Should I use standalone webcache or install from Oracle Apps Server package? If I choose Oracle Apps Server package, I have to disable Home, HTTP components. But it is DCM managed. Any suggestions?
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    Regards
    Shen Jie

    Shen Jie,
    Please review the Enterprise Deployment to see what are the best architectures.
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  • How does presentation server cache shared by users and roles in OBIEE 11.1.1.6.7

    We are running through a scenario where user1 is assigned to role1 and run a report and after couple minutes user1 is assigned to role2 and run the same report, in 2nd run i see an error in saw log, even though there is presentation server cache that was generated by user1 is previous run it s not shared to the same user if his roles is chnaged, Is this expected behaviour ? by the way we dont have any row level security jut object level
    [2014-01-20T08:11:54.000-07:00] [OBIPS] [ERROR:31] [] [saw.views.dashboard] [ecid: 2f571434fbbd5490:72a3494e:14398c832ad:-8000-0000000000daa36e,0:1] [tid: 1545778944] Invalid request ID (ml75inai8rfs23tn9ih04bh236).  The request you are attempting to access has either expired or is from a previous logon.[[
    File:reportquerycache.cpp
    Line:68
    Location:
    saw.views.dashboard
    saw.httpserver.processrequest
    saw.rpc.server.responder
            saw.rpc.server
    saw.rpc.server.handleConnection
    saw.rpc.server.dispatch
    saw.threadpool.socketrpcserver
            saw.threads
    SessionID: hjhbcvfak396tc89uuu550g8bgv75v2rshv2oeq
    Thanks for your help
    Srix

    The variable DISABLE_CACHE_HIT is used to enable or disable Oracle BI Server result cache hits and not the presentation server cache. So the behavior seems to be correct. You can manage the presentation server cache settings in hte instanceconfig.xml file. Refer to the documentation below to understand the parameters you can configure: ( http://docs.oracle.com/cd/E21764_01/bi.1111/e10541/querycaching.htm#i1218900 )

  • Cannot start Web Cache in Oracle 10g App Server

    Hi,
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    it shows the error...
    opmn id=oracle10g:6200
    no enabled components for this request
    When i tried to enable WebCache using Enable/Disable Component in Oracle 10g Enterprise manager - I can't see WebCache component it to enabe or disable it.
    When i tried opmnctl status., it shows
    ------------------------------------------------+---------
    ias-component | process-type | pid | status
    ------------------------------------------------+---------
    HTTP_Server | HTTP_Server | 7276 | Alive
    LogLoader | logloaderd | N/A | Down
    dcm-daemon | dcm-daemon | N/A | Down
    OC4J | home | 7684 | Alive
    OC4J | rhs | N/A | Down
    OC4J | instaremit | 5880 | Alive
    OC4J | insta_test_apr_02 | 7100 | Alive
    WebCache is not running, also as the WebCache is not listed in Oracle 10g Enterprise manager, i can' enable or disable it.
    Plz Help me over this.,
    Regards.,
    Deepak.C

    Hi.,
    Thanks again !!!
    Yes, My Oracle HTTP Server is listening on port 80.
    I am not clear, may i know why should the ports be changed for the request to go through Web Cache ???
    Can i assign port 80 for Web Cache and 7778 for HTTP Server ?
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    dmstool -l -t also does'nt lists ohs_server
    Hellp me over this.....
    Deepak.C

  • Mac OS X Server Forward Proxy(Web Caching)...setup a website for the proxy???

    My office is a Mac environment with a couple of windows pcs. To save on bandwidth i would like to setup a Mac OS X Snow leopard server with a web caching proxy, forward proxy. I read this link from apple
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    SL Server

  • Using Web Cache to Load balance Forms Server application.

    Hello,
    I apologize for cross posting this question in the Forms and Caching Services forum. But I thought my question will have a better chance.
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    Thanks,
    Manish

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  • Forms6i Server (9iAS R1.x) loadbalancing using Oracle Web Cache

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    Manish,
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  • How to delete the cache from Presentation Services(Web UI)

    Hi,
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    Hi,
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