Airport extreme takes long time to establish stable Wifi to Internet connection

Hi,
I am using Airport Extreme together with Airport express (to extend the Wifi signal). When I connect my MBP, MBA or my PC to the Wifi network it takes (in 90% of cases roughly) quite a long time - even up to 20mins - to get stable Internet connection. The connection drops due to time-outs or with "DNS server cannot be reached" messages. Connectivity on my local network is just fine and does not seem to show similar behavior. After some time all settles down and my connection is fast and stable. The strange thing is that my iPads are not affected by this - i.e. I can browse internet fast on my iPad, but my MBP cannot reach a single internet page at the same time. When I switch to wired connection, everything is just fine from the beginning - no time-outs etc. Sometimes it helps to switch the Airport Extreme off and on again, but it's about a 50/50 chance.
Anyone got an idea what's going on?
Thanks a lot for help!

You have wireless gremlins.. plus voodoo..
It is the nature of the beast.
My recommendation is to clean up, simplify and start over.
1. Reset the AE to factory and start over. This time use all short names no spaces and pure alphanumerics. Same for passwords but longer.
2. While you have problems try using different names for the two bands.. eg AE24ghz and AE5ghz
3. Use fixed channels.. 11, 8, 6 in that order for 2.4ghz and usually one low and one high for 5ghz.. say 36 and 149. (actual number depend on geo-region).
4. Reset the Express to factory and test extend on both the 2.4ghz and 5ghz.. (assuming gen2.. if gen1 just 2.4ghz). The express must get excellent signal to transmit excellent connection.. if it is poor then it will make things worse not better.
5. Use the apple wireless diagnostics.. to help you determine how the signal is in various parts of the house.
diagnostics
http://osxdaily.com/2012/07/31/wi-fi-scanner-mac-os-x-mountain-lion/
http://support.apple.com/en-au/HT202663
There are plenty of these available .. paid for and free but since it is built in give it a go.
6. Setup IPv6 to link-local only.
This setting is here.
7. In the client computers with issues.. clean out all current wireless names.. reboot the computer and rediscover the wireless again.. put in the password and set to remember the network.
With Yosemite.. wireless issues are a given.. expect them.. they are part of the deal.
You might even need to do a clean install of the OS.. any upgrade install to Yosemite with issues should be treated as so normal.. it is just always going to happen.

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Why it takes long time to establish Database Connection ???

Can any one please have a look on the following code snippet and show me which mistake I'm doing so it take long time to connect to DB(more than 5 minutes !!!!)
Thanx in advance ...
try{
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
Class.forName("oracle.jdbc.driver.OracleDriver");
String dbString2 = "jdbc:oracle:thin:@" + "127.0.0.1" + ":" + "1521" + ":" + "nat";
aCon = DriverManager.getConnection(dbString2, "scott", "tiger");
stmt = aCon.createStatement();
System.out.println("Connection to DB Established");
catch (ClassNotFoundException cnfe)
System.out.println("Class not found:");
cnfe.printStackTrace();
catch (SQLException sqle)
System.out.println("SQL Exception: " + sqle.toString());
sqle.printStackTrace();

Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
Why do you need this if you are going to Oracle. Try
removing this. It might be trying things out with the
old driver and then moving to the new driver. This has nothing to do with it. (And it doesn't "try things out")
>
Also check your machines. They might be slow. There is
no reason, it should take more than few hundred
milliseconds to connect to a database on localhost as
your case is.Possible reasons...
- Network traffic
- Faulty router/gateway
- Busy server
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Takes long time for my mac book pro t connect to the airport extreme

The first time I go to email or safari it takes a few minutes to get connected

Are you recovering Lion or later Time Machine backup with a Lion or later machine?
If you are, then use this article:
http://support.apple.com/kb/HT4718
Other Time Machine restore options are here:
http://support.apple.com/kb/ht1427
Note, if recovering from a PowerPC Mac (iMac G5, PowerMac, Mac Mini G4, iBook, Powerbook), this tip is important:
http://discussions.apple.com/docs/DOC-2295
Otherwise use the recommended restore option with whatever backup software you used initially.

6th Generation Airport Extreme Freezing During Time Machine Backups using LaCie 1TB Hard Drive

I recently upgraded from a 4th generation Airport Extreme (short, dual band n) to a new 6th generation Airport Extreme (tall, dual-band ac) in the hopes of having quicker backups and better WiFi performance (I also just got a 13" retina MacBook Pro).
The upgrade has gone poorly, to say the least. Initially, I set up the new Airport Extreme as I had for the old one. Then I plugged in the same hard drive I was using (a LaCie 1 TB d2 Quadra USB2 drive that I bought in June of 2009). I decided to setup my wife's Time Machine backup first (she has a 2010 MacBook Air). I removed the "old" disk (the one associated with the old base station) from her Time Machine configuration, and set up her Time Machine configuration to backup to the same disk on the new Airport Extreme. I was pleasantly surprised to find that it picked up her existing Time Machine backup and incrementally synchronized to it (the backup size was about 300 MB). A few days later, she warned me that Time Machine told her that backups were not working. When I went to look, it was indeed failing.
I tried a few things that didn't work, and I suspected that maybe the backup "transfer" hadn't gone so smoothly as it seemed, so I decided to erase the drive using Disk Utility and start the backup over again. To my disappointment, I found that the backup got about 200MB-1.5GB into the backup and "froze." I left it overnight, and it was at exactly the same place the next morning. The light on the disk connected to the Airport Extreme flashed constantly all the time, and I could hear it spinning, but nothing happened at all.
When I tried to stop the backup, it took a very long time. In the logs, I would see a message like this (this log is from my machine, not my wife's, but it looks the same):
11/19/13 9:40:59.276 PM com.apple.backupd[93334]: Forcing deep traversal on source: "***-mpbr" (device: /dev/disk0s2 mount: '/' fsUUID: 7356274E-D28F-3BC0-9CA8-7F1AA21830B4 eventDBUUID: 99941F9A-AD5F-4FAF-94D2-701C94CA9581)
11/19/13 9:41:57.609 PM com.apple.backupd[93334]: Total content size: 148.2 GB excluded items size: 17.16 GB for volume ***-mpbr
11/19/13 9:41:57.610 PM com.apple.backupd[93334]: Found 674166 files (131.05 GB) needing backup
11/19/13 9:41:57.611 PM com.apple.backupd[93334]: 152.52 GB required (including padding), 498.67 GB available
11/19/13 9:41:57.625 PM com.apple.backupd[93334]: Waiting for index to be ready (100)
11/19/13 9:59:22.407 PM UserEventAgent[11]: com.apple.backupd-auto launchd job disabled
11/19/13 10:00:15.103 PM com.apple.backupd[93334]: Cancellation timed out - exiting
Looking at the Airport Extreme in Finder, I saw that it got stuck, either "Connected as" me, or "Connecting...". The Airport Extreme wouldn't respond to the "Disconnect" or "Connect As..." buttons (depending on the context), and the eject button for the Airport Extreme itself in the sidebar was also unresponsive. Eventually, after 2+ minutes, I got a dialog saying "Couldn't connect to [my base station name]" with instructions to "check its IP" and contact my system administrator if the problem persists. During this time, Finder can seem frozen and unstable.
Through all of the above, the hard disk kept spinning and the light flashed constantly. The drive was warm to the touch in the morning.
I also found that when all this happened, I was unable to connect to the Airport device using Airport Utility. I I couldn't administer it, but the Internet continued to work for all connected devices. Unplugging the disk and plugging it back in worked immediately to bring the system back to a working state. I didn;t even have to power-cycle or reset the Airport Extreme.
I tried a number of things to correct this behavior:
Disabled Time Machine, removed disk, restarted machine, reconfigured Time Machine, and retried.
Tried backup on my 13" Retina MacBook Pro and my wife's MacBook Air.
I actually tried with TWO new 6th Generation Airport Extremes. The first one was a refurbished one. I returned it to Apple and purchased a brand new one. Both of them exhibited the behavior I described above.
Workaround:
Finally, I switched the drive out for a spare that I have (an older Western Digital MyBook and used it for a backup. This drive "Just worked."
So, I have switched to that for backup for now, and re-purposed the LaCie as a drive that I use for making periodic images of my hard drive using SuperDuper. The drive seems to work perfectly (and worked perfectly for several years with older Airport Extreme base stations), so I can only assume there's a bug in the USB driver of the current 6th-generation Airport Extreme.
I hope this helps someone else who's as confused as I was. If anyone has had a similar experience, I would very much like to read about it. I will be reporting this problem to apple right after I post this topic. Please do the same if you experience this issue.

As Bob says, backing-up that way isn't supported.
It's also unreliable. It may work for a while, but this forum, and the Time Machine forums, have many, many posts like this:
*"I've been backing-up via an Airport Extreme for* <some number of days, weeks, or months> *and all of a sudden my backups are corrupted beyond repair."*
In my case, it's happened about 4 times in a year. And that's with a desktop Mac, about 12 feet from the Airport, with the exact same hardware in exactly the same place and no interference.
It is very convenient, especially with laptops. If you want to take the risk, see [Using Time Machine with an Airport Extreme Air Disk|http://web.me.com/pondini/Time_Machine/Airport.html] (or use the link in *User Tips* at the top of this forum).
But do yourself a LARGE favor and take the prominent advice to keep secondary backups, and update them frequently. Sooner or later, you're probably going to need them.

Using an Airport Extreme and a Time Capsule at the same time

Guys I have had an Airport Extreme and a Time Capsule running together for nearly a year now and over the last few days the TC has been behaving badly. I changed its settings and now I'm in a mess. No, I can't remember the previous settings
Does anyone have a definitive list of the settings I need please? I have an ethernet cable modem, and the Airport Extreme is plugged into that as the main router. Two computers and the Time Capsule are plugged into the Airport Extreme using ethernet. The Time Capsule at the moment is just used as a network drive for Time Machine, but at some point I want to move it, with a long ethernet cable, and use it for extending the wifi in the house.
1. Should I connect the TC using its WAN port or one of the other ethernet ports? At present it's one of the other ones.
2. What TC settings should I use to have it function purely as a hard drive? At the moment there's some kind of conflict and my internet connection drops every 30 minutes.
3. Then later, what settings will I need to get the ethernet connected TC to extend the range of my wifi?
I read the Apple doc about WDS and tried setting the TC up that way. Then I discovered there is no WDS option in the AE Wireless settings. Only "Create a wireless network" or "extend a wireless network". The same setting on the TC has these options: "Create a wireless network" "Participate in a WDS network" or "extend a wireless network". Both devices have firmware 7.5.2. It didn't work with only the TC set for WDS, of course, but after that I can't get it back the way it was - which wasn't reliable anyway
Any help in exactly what the Wireless and Internet settings should be would be massively useful. Thanks!

If you use the extreme as a router then the tc should be connected via its wan port to one of the lan ports on the extreme. Tc should be set up in bridge mode. Basically you could set it up to create another wireless network beside the one created by the extreme. There is no need to use WDS or extend the other network.
Use the same SSID and password for both machines. Computers will connect to the strongest signal.

Is it possible to use NAS storage (which is wired via LAN to AirPort Extreme) as a Time Machine destination?

Is it possible to use NAS storage (WD My Cloud EX2 or WD My Cloud EX4) which is wired via LAN to current AirPort Extreme, as a Time Machine backup destination?
There are two reasons I came up with this question.
- Connecting via Ethernet should be faster than USB 2.0 connection
- 8TB NAS storages are slightly cheaper than 8TB USB HDD
If it is impossible, I am planning to buy My Book Thunderbolt Duo 8TB and wire it for MacBook Pro directly for the purpose of Time Machine backup.
I have a concern with my primal idea of backing up via WiFi, as I tend to handle big files when doing music production or movie editing. I wonder if this affect the performance of MacBook Pro, as it might take more time to complete each backup via WiFi.
Many thanks for your advice in advance,
Masa
MacBook Pro Retina 15 inch (Mid 2012)
Processor 2.6 GHz Intel Core i7
Memory 16GB 1600 MHz DDR3

I would appreciate any advice which could include aother sollition of secure and practical backup.

Validate map in FDM takes long time and finally expires

Hi,
I have an issue with FDM Mapping.
When i click the "validate" option in workflow, the FDM processing takes long time (more than an hour) and finally expires.
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As we are in production environmeny, Can someone quickly clarify me, why this happen.
Thanks,
Siva

Hello Kelly,
Something you said concerns me: +"Because we automated data loads for the large file, this issue is extremely low on the priority list."+
In this type of scenario we notice customers/partners implementing FDM as an 'ETL' utility. FDM is not an ETL utility and should not be treated/used as such. In the event that you are doing this, Support has no control of the application as it is a mis-use of what FDM is for.
Files that are being pushed into FDM should always be broken down into the smallest components(locations) and used as a 'front end,' user interface.... not a server-side/IT application. If you meet this criteria of FDM, then there is not much Support can do.
If you do not think you are misusing FDM, I would highly suggest you open/create a Support SR if you do not use FDM in that manor. Consultants/Partners are functional/design based.... and not necessarily trained as Support Engineers. Therefore they might not have the skills required to make such determinations.
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Oracle Global Customer Support

BPM Process chain takes long time to process

We have BI7, Netweaver 2004s on Oracle and SUN Solaris
There is a process chain (BPM) which pulls data from the CRM system into BW. The scheduled time to run this chain is 0034 hrs. This chain should ideally complete before / around 0830 Hrs. <b>Now the problem is that every alternate day this chain behaves normally and gets completed well before 0830 hrs but every alternate day this chain fails</b> there are almost 40 chains running daily. Some are event triggered (dependent with each other) or some run in parallel. In this, (BPM) process chain, usually there are 5 requests with 3 Delta and 2 full uploads (Master Data). The delta uploads finishes in 30 minutes without any issues with very few record transfers. The first full upload is from 0034 hrs to approximately 0130 hrs and the 2nd upload is from 0130 hrs to 0230 hrs. Now if the 1st upload gets delayed then the people who are initiating these chains, stop the 2nd full upload and continue it after all the process chains are completed. Now this entire BPM process chain sometimes takes 17 -18 hrs to complete!!!!!
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CRM has background jobs to push IDOCS to BW which run every 2 minutes which runs successfully
Yesterday this chain got completed successfully (well within stipulated time) with over 33,00,000 records transferred but sometimes it has failed to transfer even 12,00,000 records!!
Attaching a zip file, please refer the 21 to 26 Analysis screen shot.doc from the zip file
Within the zip file, attaching Normal timings of daily process chains.xls the name explains it.
Also within the zip file refer BPM Infoprovider and data source screen shot.doc please refer this file as the infopackage (page 2) which was used in the process chain is not displayed later on in page number 6 BUT CHAIN GOT SUCESSFULLY COMPLETED
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1)     The PSA data for BPM process chain for past few days
2)     The info providers for BPM process chain for past few days
3)     The ODS entries for BPM process chain for past few days
4)     The point of failure of BPM process chain for past few days
5)     The overall performance of all the process chains for past few days
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As per our analysis, there are couple of things which can be fixed in the BW system:--
1)     The partner agreement (transaction WE20) defined for the partner LS/BP3CLNT475 mentions both message types RSSEND and RSINFO: -- collect IDOCs and pack size = 1 Since the pack size = 1 will generate 1 TRFC call per IDOC, it should be changed to 10 so that less number of TRFCs will be generated thus less overhead for the BW server resulting in the increase in performance
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I was not able to attach the many screen shots or the info which I had gathered during my analysis. Please advice how do I attach these files
Best Regards,

Hi,
Normally index creation or deletion can take long time in case your database statistics are not updated properly, so can check stat after your data loading is completed and index generation is done, Do creation of database statistics.
Then try to recheck ...
Regards,
Satya

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I've got a small office network where files are served off a Mac mini, and iMacs connected via 802.11n wifi to the wired mini via Time Capsule. I have a spare AEBS (b/g) that I was thinking of setting it up for iPhone and guest access of internet. To keep the mini and iMacs secure, the set-up would be:
Internet -> AirPort Extreme (b/g) -> Time Capsule -> Mac mini and iMacs
The only issue I'm contemplating - the slower Ethernet ports on the Extreme - which I don't think is a problem for connecting to the Internet. Is there anything else I should be concerned about regarding network performance?
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Message was edited by: openarchitecture

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The Application Takes long time to Start

Hello All,
We ar eon Unix->64 Bit-> Essbase 11.1.1.3.
Problem Description : The application is taking long to start up. around 5 to 6 minutes. This is very first time it is happening.
There were no specific changes done to the application in the recent releases.
I have tried all options 1. Compacating outline, 2. Purging the application log etc. all other applications respond good on this host except this. Usually any application should not take more than 1 to 2 minutes to start up.
There are no specific errors or XCP files recorded in the logs and folders.
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MS

Thanks Jitendra and Prabhas,
I know i have posted this thread sometime back and later I had to jump on a New release, so did not get time to check your inputs.
Well I am back on this issue again. I have been working on various option to get this issues solved " start of App takes long time"
Here are some Details. We are on SunOs 64 Bit, has 12CU with dual core, with Essbase 11.1.1.3 running on it. This is an ASO application and has just 7 dimensions, Out of which the ORGANIZATION Dimension is pretty huge with Multiple Hierarchies enabled ( Both Stored and Dynamic ) and has more than 20,00,000 members including the alternate hierarchies ( Shared members)
I did a smoke test by building dimension by dimension the app was startiung up in just *40* seconds. and when i reached the ORG dimension and added more than 70,000 memebrs . there i fall sick. the app now gets back to its old issue ( Takes more than 10 mainutes to start).
CPU Usage ranges between 3.1 % to 4 %
PID USER NLWP PRI NI VSZ RSS S STIME ELAPSED %CPU COMMAND
4424 user1 1 59 20 1608 1032 S 18:13:33 00:00 0.0 grep COMMAND
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4766 user1 88 55 20 6814168 5684200 O 17:37:48 35:45 3.1 /path/xyz/masked/ASO_APP hgfedc NOCREAT.
But My question here is, in the last moth cube i still similar number of members in the cube and nothing really had changed.
Essbase GURU's Please give me some Hint to think out of box now.
Thanks
MS

Report takes long time for few records

hi frends,
I m facing one problem with my Web based erp application which is developed in .net , in my application when i open the report from my applicaiton , in my temp folder there one file gets created name is "rpt conmgr cache"
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hi sabhajit,
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MVIEW refresh takes long time

Materialized view takes long time to refresh but when i tried select & insert into table it's very fast.
i executed SQL and it takes ust 1min ( total rows is 447 )
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MVIEW configration :-
CREATE MATERIALIZED VIEW EVAL.EVALSEARCH_PRV_LWC
TABLESPACE EVAL_T_S_01
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infant_raj wrote:
Materialized view takes long time to refresh but when i tried select & insert into table it's very fast.
i executed SQL and it takes ust 1min ( total rows is 447 )
but while i refresh the MVIEW it takes 1.5 hrs ( total rows is 447 )A SELECT does a consistent read.
A MV refresh does that and also writes database data.
These are not the same thing and cannot be directly compared.
So instead of pointing at the SELECT execution time and asking why the MV refresh is not as fast, look instead WHAT the refresh is doing and HOW it is doing that.
Is the execution plan sane? What events are the top ones for the MV refresh? What are the wait states that contributes most to the processing time of the refresh?
You cannot use the SELECT statement's execution time as a direct comparison metric. The work done by the refresh is more than the work done by the SELECT. You need to determine exactly what work is done by the refresh and whether that work is done in a reasonable time, and how other sessions are impacting the refresh (it could very well be blocked by another session).

Takes Long time for Data Loading.

Hi All,
Good Morning.. I am new to SDN.
Currently i am using the datasource 0CRM_SRV_PROCESS_H and it contains 225 fields. Currently i am using around 40 fields in my report.
Can i hide the remaining fields in the datasource level itself (TCODE : RSA6)
Currently data loading takes more time to load the data from PSA to ODS (ODS 1).
And also right now i am pulling some data from another ODS(ODS 2)(LookUP). It takes long time to update the data in Active data table of the ODS.
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Thanks & Regards,
Siva.

Hi....
Yes...u can hide..........just Check the hide box for those fields.......R u in BI 7.0 or BW...........whatever ........is the no of records is huge?
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Now to improve performance...........u can try to increase the virtual memory or servers.........if possiblr........it will increase the number of work process..........since if many jobs run at a time .then there will be no free Work prrocesses to proceed........
Regards,
Debjani......

The 0co_om_opa_6 ip in the process chains takes long time to run

Hi experts,
The 0co_om_opa_6 ip in the process chains takes long time to run around 5 hours in production
I have checked the note 382329,
-> where the indexes 1 and 4 are active
-> index 4 was not "Index does not exist in database system ORACLE"- i have assgined to " Indexes on all database systems and ran the delta load in development system, but guess there are not much data in dev it took 2-1/2 hrs to run as it was taking earlier. so didnt find much differnce in performance.
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-> OLTPSOURCE - is blank
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-> OLTPSOURCE - is blank
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Also for the IP there is selction criteris for FISCALYEAR/PERIOD from 2004-2099, also an inti is done for the same period as a result it becoming difficult for me to load for a single year.
Please suggest.

The problem was the index 4 was not active in the database level..it was recommended by the SAP team to activate it in se14..however while doing so we face few issues se14 is a very sensitive transaction should be handled carefully ... it should be activate not created.
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Be very carefull while you execute it in se14 best is to use db02 to do the same , basis tend to make less mistake there.
Thanks Hope this helps ..

Airport extreme takes long time to establish stable Wifi to Internet connection

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