DNS Cache Problems AGAIN!

I give up on trying to fix my iMac's DNS issues.
I have tried the dscacheutil -flushcache and still I can not reach certain websites.
These same websites I can reach on my Parallel's XP install and the very same iMac.
Again suggestions would be greatly appreciated.
Would sure like to know what Apple updates keep breaking the DNS?

There's lots missing from this post if you're trying to find answers. If you're just ranting, that's OK, but it's nice to say so that others don't waste time trying to help.
Assuming you are looking for answers, let's start with the obvious.
Are the Windows VM and the Mac using the same DNS server settings? If not, why not? and what happens if you set the Mac to the same settings as the Windows VM?
What sites are you having trouble connecting to?
What makes you say the problem is DNS, vs. some other issue?
Are you using a proxy server on the Mac? (i.e. it's the proxy server that's blocking access rather than a DNS issue).
You imply the problem lies with Apple updates. What makes you say this? Were you previously able to access the sites in question?

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Possible DNS caching problem

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A dns problem again?

I sent email to [email protected] but the engineer there said he did not receive it. Also, I did not receive the email he sent to me through his sun.com email. it sounds a dns problem again.
I have changed our mx record to:
@ IN MX junk.domain.com.
before, it was:
@ IN MX junk ==>would this cause dns problems?
Here is the entry in the mail.log which seemed that sun has received my email successfully:
09-Dec-2005 09:39:10.59 tcp_local D 2 [email protected] rfc822;[email protected] [email protected] dns;btmx1.sun.com (relay1.sun.com [IntraStore TurboSendmail] ESMTP Service ready) smtp;250 recipient <[email protected]> OK

Your log shows that Sun did indeed receive your mail.
Sun's mail infrastructure has been under DOS attack for some days. Sometimes that's caused delays of up to several hours for inbound mail to get to us.
We also have had some virus infected systems pounding our servers. More delays.
We do contract with an external company to scan for spam/virus scanning. Those folk historically have lost us some mails, too.
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I am facing a caching problem in the Web-Application that I've developed us

Dear Friends,
I am facing a caching problem in the Web-Application that I've developed using Java/JSP/Servlet.
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<%
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%>
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Thanks & Regards,
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However, when the link is clicked second time then the request is not received by our servlet Impossible mate.. can you show your code. You sure there are no javascript errors ?
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cheers..
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Hi Silviu,
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ADF cache problem

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Qaaws not refreshing query triggered from Xcelsius, maybe a cache problem

Hi,
I'm having a problem with QAAWS and Xcelsius
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When I preview my dashboard, I select the States, then UPDATE the values and then refresh the query with a CONNECTION REFRESH button, The first time I do this it works fine and returns the Sales revenue.
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First I thought that the query wasn't triggered by Xcelsius, but by doing some more tests I found that actually the query runs but it returns the value from the first query
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Hello Alejandro,
QaaWS indeed uses a cache mechanism to speed up some Xcelsius interactions (from XI 3.0 onwards), but your issue should not be induced by this, as cache sessions are discriminated according to session user id & prompt values, so if you are correctly passing prompt values, QaaWS should not serve you with the previous values by error.
Could you specify how you are passing several prompt values to the QaaWS? There might be an issue there, so make sure that:
1. QaaWS query prompt is set using In List operator, otherwise only first value will actually be taken into account,
2. In Xcelsius Designer Data Manager, web service input paremeters are duplicated to accept several input values (you cannot submit you list of prompt values as a list to a single input parameter).
If this still does not work, I'd suggest you debug your dashboard runtime using an HTTP sniffer like Fiddler (available from http://www.fiddler2.com/) which enable you to inspect the sent & recieved HTTP messages with the server, where you should verify which prompt values are sent to the QaaWS servlet.
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PI Caching Problem

Hello Experts,
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We also did a copy of this integration process and activated it. The copy is never shown in the sxi_cache. It seem like the integration process doesn't exist. But he is there.
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Go to http://<host>:<java port>/rwb/sub/cache_monitoring/notification_table and look into problems tab to get more details regarding cache problems on your system.
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Flushing the DNS cache

I'm having trouble with a Web site when I access it on my home computer, yet this same site looks fine on my Mini at work. One section of the index page generates a "can't find server" error, and the site's own logo won't display properly. It is a free hosting site. Sometimes I can upload files to it, other times I get a can't-find-server error when I try.
In answer to my query about this (to which I helpfully attached a screenshot of the incompletely loaded index page and its error messages), the host is telling me that I should "flush my DNS cache," which they say involves going into Terminal and giving the command "ookupd -flushcache" [sic]. (I've already surfed this briefly and the first result confirmed my suspicion that this doofus hasn't mastered copy-and-paste technique and the command actually should be "lookupd- flushcache".)
It's not just that their site doesn't load fully, though. They have some stuff on one of their pages that they encourage users to hotlink on personal Web sites, and I have done that with one of their banners. The banner, which was fine for months, now appears on my page as a broken icon, too, although it, like the site's home page, loads fine on my computer at work.
My first question is, is there any harm in flushing the DNS cache? The OS Daily page where I think they copied this advice from makes it sound like this is something only a Web server would need. If I do it on my home machine, could it cause problems? Could it disable my Internet connectivity?
Second, less urgent question, more for the netgeeks out there: Do you think this is a likely solution to my problem? Especially considering that the problem involves not only their site but an element on an external site linking back to them? I hate to play the sucker for some low-level geek whose main mission is to deflect my query.
Thanks
Kathi

Kathi--
Like BDAqua says, there's nothing to worry about flushing the DNS cache. It's true that most people probably don't need to do it very often, but it's something easy and harmless to try, and it might well fix problems like yours.
One handy feature of Safari, even if you don't use it for anything else, is the "Activity" window. Open it from the "View" menu, and watch as your page loads. You can see exactly which components on the page are loading, which aren't and where they should be coming from. If you double-click an element in that list, Safari will try to open it in a new window. That is sometimes enough to give a clue as to why something isn't working.
You can use Safari's activity list along with the Network Utility from your Utilities folder to try to figure out why you're not getting the page elements. Suppose a graphic is listed as coming from http://www.server1.com/images/logo.jpg, but it's not loading.
First thing I would try in the Network Utility is to see if it will respond to pings. From that example, enter "www.server1.com" on the "Ping" page of the Network Utility and see if it answers back.
To find out if it's a DNS problem, you can use Safari's list to get the addresses of the problem elements, then see if the IP addresses match up on your computer at home to the one at work. If they don't, then it could be stale DNS.
You can use the Network Utility for DNS lookups, but I think they're hard to read, and, since you're already thinking about using the Terminal to flush the DNS cache, you can use nslookup. It's really simple:
<pre class="command">nslookup www.apple.com</pre>
Will give you something like this (the first two lines will likely be different):
Server: 208.67.222.222
Address: 208.67.222.222#53
Non-authoritative answer:
www.apple.com canonical name = www.apple.com.akadns.net.
Name: www.apple.com.akadns.net
Address: 17.251.200.32
If the addresses don't match, or you get a message that it can't find anything for your server, then you know it's a DNS problem. Perhaps they've changed some addresses and your home ISP's DNS servers themselves aren't updating.
You can even use nslookup to see what different DNS servers say about an address. Just add the IP address of a DNS server after the address you want to look up:
<pre class="command">nslookup www.apple.com 208.67.220.220</pre>
Just do a search on the 'net for free DNS servers, and you'll find a bunch to choose from.
charlie

How can I clear the DNS cache?

I haven't been able to connect to my local Library since January. When I key in the URL, it starts the access routine and then after about 20 minutes, I have to kill it because nothing happens. I contacted the IT folks at the library and was told that they had made a few changes around the time my problem began so maybe the DNS cache was still pointing at the old info. He recommended that I enter TERMINAL mode and try to clear the DNS cache, using "sudo dscacheutil -flushcache" command. . I attempted this several times, even changing my applid password, and kept getting invalid responses.

I did try that and after a few trys it finally worked. It took quite awhile for the window for the library to finally come up, but it did and I am now able to get in and out with no problems with my library access. Now when I call up my bank, parts of it don't come up and it kicks me out. Now, I'll have to search for what fixes that - as it has happened before, so I know it's fixable. Thanks for you help though.

[help] Flash cache problem?

Operating Environment: IIS6+ASP.Net 2.0+Flash
Framework / Procedure:
When running, Flash will run ASP.NET program. ASP.NET then
extracts data from the database and generates a XML file for Flash.
Flash reads the XML file and parse it into a readable format
for the users.
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When Flash displays the XML content and user leaves/exits the
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Then if this Flash function is executed again, ASP.NET
generates a new XML file, but Flash still displays the old XML
content.
We discovered that when IE's "Temorary Internet Files"
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Did you try returning the XML via an ASP script?
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Where Is My DNS Cache And How Do I Clear It?

I'm using Timbuktu to reach my desktop iMac remotely. I subscribe to DYNDNS to detect IP changes. Recently, after a blackout, I could not reach the iMac remotely via DYNDNS. I WAS able to use the new IP (which I had someone look up for me) and Timbuktu connected just fine.
After contacting DYNDNS, they told me to clear my DNS cache, as that was probably the reason why their detecting system could not see the new IP.
My head is spinning. Can some kindly tell me where the DNS cache is on my iMac 10.4.11 and how to clear it? (For idiots, please).
Many thanks
---Gary

Yes, it's clear. Thanks.
I'm just too nervous to try this until my Mac Guru is sitting here. I can't unscramble anything I screw up...and that's a pretty good possibility based on past events.
Again, thanks
Gary

Firefox cache problem

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There is an old nasty problem that I finally want to solve:
With Firefox my Apex applications get a cache problem once in a while: The user clicks on a button or tab or a text field etc. and suddenly gets a page with the design mingled up and the functionality broken. With ctrl + F5 (refresh) everything is fine again, but it's rather ennoying for the users. The problem is, some users get that often, others not at all, sometimes it's more, sometimes it's less. For all (internal) users I set in prefs.js the cache to user_pref("browser.cache.check_doc_frequency", 1); for maximum refresh behaviour. So the configs should be the same for all.
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Never get that problem Roger.
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