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• moving iphone app background image

  - by SteveDun

  Hey there. I am creating my first iPhone native app (beginner Objective-C). On my main menu title screen, i would like for the background image to move slowly to the left. Is it possible to tile a background image and have it move? I'm basically trying to have my clouds drift across the background. How would you accomplish this?

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• Setup NTPD in Ubuntu to sync Windows AD

  - by David

  I am setting up my Ubuntu 10.0.4 server to sync clock with a Windows 2008 AD. As none of the "remote" has a "*" in front (worst it had a blank space in front), does it mean no time sync source is selected? The offset just keep increasing. I tried ntpdate to the same server it worked OK. remote refid st t when poll reach delay offset jitter ============================================================================== 172.18.133.201 .LOCL. 1 u 38 64 377 0.827 277.677 58.375 Any help to fix this? Here is my ntp.conf (with all comments removed) driftfile /var/lib/ntp/ntp.drift statistics loopstats peerstats clockstats filegen loopstats file loopstats type day enable filegen peerstats file peerstats type day enable filegen clockstats file clockstats type day enable restrict -4 default kod notrap nomodify nopeer noquery restrict -6 default kod notrap nomodify nopeer noquery restrict 127.0.0.1 restrict ::1 server 172.18.133.201 iburst

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• Robocopying DLLs and EXEs

  - by BinaryDeuce

  I've used Robocopy for several years now for backup purposes, and never looked back at any backup application I used in the past. I replicate whole valued directories to a removable HD, than from this HD to and equivalent system. Over time, quite a few DLL and EXE have accumulated in these directories, none of which Robocopy can seem to copy to my external HD. Thus, my 2 computers drift apart slowly... Is there anyway, using one of the eigthy-nine (89) switches (or one of the 2^89 - 1 = 6,1897002 × 10^26 combinations thereof) to force Robocopy to robotically copy EXEs, DLLs and other of my "access is denied" friends? Thanks

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• Is it safe to change the time on hosting VM server?

  - by hydroparadise

  So, I noticed there's about a 10 minute drift on my VM hosting server from what time it's supposed to be. In traditional environments, I would just restart the system (and change the BIOS time if necassary). The hosting server is Ubuntu 12.04. Undertsanding that some process could be time sensitive (NTP?), I was wondering how this might affect the relation between the host and hosted system (currently hosting 4: 3 Ubuntu 12.04 servers with one being a web server, and 1 Windows Server 2008 file server). I am using Virtual Box 4 with it's headless option. Ultimately, I am trying to avoid from shutting down the host (which ultimately mean shutthing down the other hosted systems). Is this safe?

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• How to make sure you server NIC performance is at best on Windows?

  - by Bobb

  I realised that I followed some obscure paper on setting NICs on Windows for too long. It might be outdated with new hardware released in past couple of years and with W2008R2. I read a bit about offloading and RSS settings on Windows and I realiased that it is very much circumstantial. Noone can really say - enable that and disable this. etc. So what I really want is for my next server try and setup testing environment and measure how my particular application will behave with different settings. The target is going to be latency of TCP primarily. Please note I am talking about latency inside the box. Are there precision tools for Windows to measure latency (down to microseconds)? P.S. I know this is not easy question. Windows time drift is awful problem for any precision test but still I am sure I am not the fist person to need that... Please share your experience

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• Can time skew on Windows be reduced to +/- 5ms?

  - by mbac32768

  A number of our Windows workstations, running ntpd, simply cannot keep time. Our Linux workstations and servers running the same ntpd config don't have this problem, they can stay within +/- 5ms of skew. The Windows hosts easily drift to seconds and sometimes minutes apart. This is a problem for us. The only common factor we have been able to isolate is that the hosts that can't keep time are running Windows. Is there something fundamentally impossible with what we're trying to do?

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• I can't get SetSystemTime to work in Windows Vista using C# with Interop (P/Invoke).

  - by Andrew

  Hi, I'm having a hard time getting SetSystemTime working in my C# code. SetSystemtime is a kernel32.dll function. I'm using P/invoke (interop) to call it. SetSystemtime returns false and the error is "Invalid Parameter". I've posted the code below. I stress that GetSystemTime works just fine. I've tested this on Vista and Windows 7. Based on some newsgroup postings I've seen I have turned off UAC. No difference. I have done some searching for this problem. I found this link: http://groups.google.com.tw/group/microsoft.public.dotnet.framework.interop/browse_thread/thread/805fa8603b00c267 where the problem is reported but no resolution seems to be found. Notice that UAC is also mentioned but I'm not sure this is the problem. Also notice that this gentleman gets no actual Win32Error. Can someone try my code on XP? Can someone tell me what I'm doing wrong and how to fix it. If the answer is to somehow change permission settings programatically, I'd need an example. I would have thought turning off UAC should cover that though. I'm not required to use this particular way (SetSystemTime). I'm just trying to introduce some "clock drift" to stress test something. If there's another way to do it, please tell me. Frankly, I'm surprised I need to use Interop to change the system time. I would have thought there is a .NET method. Thank you very much for any help or ideas. Andrew Code: using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Runtime.InteropServices; namespace SystemTimeInteropTest { class Program { #region ClockDriftSetup [StructLayout(LayoutKind.Sequential)] public struct SystemTime { [MarshalAs(UnmanagedType.U2)] public short Year; [MarshalAs(UnmanagedType.U2)] public short Month; [MarshalAs(UnmanagedType.U2)] public short DayOfWeek; [MarshalAs(UnmanagedType.U2)] public short Day; [MarshalAs(UnmanagedType.U2)] public short Hour; [MarshalAs(UnmanagedType.U2)] public short Minute; [MarshalAs(UnmanagedType.U2)] public short Second; [MarshalAs(UnmanagedType.U2)] public short Milliseconds; } [DllImport("kernel32.dll")] public static extern void GetLocalTime( out SystemTime systemTime); [DllImport("kernel32.dll")] public static extern void GetSystemTime( out SystemTime systemTime); [DllImport("kernel32.dll", SetLastError = true)] public static extern bool SetSystemTime( ref SystemTime systemTime); //[DllImport("kernel32.dll", SetLastError = true)] //public static extern bool SetLocalTime( //ref SystemTime systemTime); [System.Runtime.InteropServices.DllImportAttribute("kernel32.dll", EntryPoint = "SetLocalTime")] [return: System.Runtime.InteropServices.MarshalAsAttribute(System.Runtime.InteropServices.UnmanagedType.Bool)] public static extern bool SetLocalTime([InAttribute()] ref SystemTime lpSystemTime); #endregion ClockDriftSetup static void Main(string[] args) { try { SystemTime sysTime; GetSystemTime(out sysTime); sysTime.Milliseconds += (short)80; sysTime.Second += (short)3000; bool bResult = SetSystemTime(ref sysTime); if (bResult == false) throw new System.ComponentModel.Win32Exception(); } catch (Exception ex) { Console.WriteLine("Drift Error: " + ex.Message); } } } }

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• How to visualize code?

  - by gablin

  I've mostly only had to read my own code. As such, I've had no need to visualize the code as I already know how each and every class and module communicate with one another. But the few times I've had to read someone else's code - let us now assume we are talking about at least one larger module which contains several internal classes - I've almost always found myself wishing "This would have been so much easier to understand if I could just visualize it!" So what are the common methods or tools for enabling this? Which do you use, and why do you prefer them over the others? I've heard stuff like UML, module and class diagrams, but I imagine there are more. Furthermore, any of these is most likely better than anything I can devise on my own. EDIT: For those who answer with "Use pen and paper and just draw it": This isn't very helpful unless you explain this further. What exactly am I supposed to draw? A box for each class? Should I include the public methods? What about its fields? How should I draw connections that explain how one class uses another? What about modules? What if the language isn't object-oriented but functional or logical, or even just imperative (C, for instance)? What about global variables and functions? Is there an already-standardized way of drawing this, or do I need to think up of a method of my own? You get the drift.

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• Need explanation for this boost::asio timer example

  - by ApplePieIsGood

  There is a line in the 3rd tutorial on Boost asio that shows how to renew a timer and yet prevent there from being drift. The line is the following: t->expires_at(t->expires_at() + boost::posix_time::seconds(1)); Maybe it's me but I wasn't able to find documentation on the 2nd usage of expires_at(), with no parameters. expires_at(x) sets the new expiration, cancelling any pending completion handlers. So presumably expires_at() does what, return time of the last expiry? So by adding one second, if there should be some number of ms, say n ms, then it will in essence be "subtracted" from the next expiry since the time is being accounted for? What happens then if the time it takes to perform this handler is greater than 1 second in this example? Does it fire immediately?

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• Checking for Value in JS Object

  - by pagewil

  I have a JS Object like so: var ob{ 1 : { id:101, name:'john', email:'[email protected]' }, 2 : { id:102, name:'jim', email:'[email protected]' }, 3 : { id:103, name:'bob', email:'[email protected]' }, } I want to check if this JS object already contains a record. If it doesn't then I want to add it. For example. if(ob contains an id of 101){ //don't add john }else{ //add john } Catch my drift? Pretty simple question. I just want to know the best way of doing it. Thanks Guys! W.

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• Training speech recognition software

  - by wyatt

  A little left field, but I'm trying to train a speech recognition program and the guidelines suggest that I attempt to speak clearly but naturally. I notice, however, that when one speaks naturally each word tends to drift into the next, resulting in a rather ambiguous boundary between the words. One the one hand, speaking in a more stilted manner would seem to aid the computer in recognising the phonemes, but on the other it would tend to make it less likely to understand more natural speech. Anyone knowledgeable in the field out there who can suggest which of the two approaches is more effective? Thanks

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• Unable to sync time using `ntpdate`, error: "no server suitable for synchronization found"

  - by William Ting

  My ntp.conf file: user@pc[0][07:37:40]:/etc$ cat /etc/ntp.conf idriftfile /var/lib/ntp/ntp.drift server 0.pool.ntp.org server 1.pool.ntp.org server 2.pool.ntp.org server pool.ntp.org Command output: user@pc[0][07:37:24]:/etc$ sudo ntpdate -dv pool.ntp.org 18 Jun 07:37:35 ntpdate[10737]: ntpdate [email protected] Tue Apr 19 07:15:05 UTC 2011 (1) Looking for host pool.ntp.org and service ntp host found : conquest.kjsl.com transmit(198.137.202.16) transmit(216.45.57.38) transmit(64.6.144.6) transmit(198.137.202.16) transmit(216.45.57.38) transmit(64.6.144.6) transmit(198.137.202.16) transmit(216.45.57.38) transmit(64.6.144.6) transmit(198.137.202.16) transmit(216.45.57.38) transmit(64.6.144.6) transmit(198.137.202.16) transmit(216.45.57.38) transmit(64.6.144.6) 198.137.202.16: Server dropped: no data 216.45.57.38: Server dropped: no data 64.6.144.6: Server dropped: no data server 198.137.202.16, port 123 stratum 0, precision 0, leap 00, trust 000 refid [198.137.202.16], delay 0.00000, dispersion 64.00000 transmitted 4, in filter 4 reference time: 00000000.00000000 Thu, Feb 7 2036 0:28:16.000 originate timestamp: 00000000.00000000 Thu, Feb 7 2036 0:28:16.000 transmit timestamp: d1a71a93.1f16c1e3 Sat, Jun 18 2011 7:37:39.121 filter delay: 0.00000 0.00000 0.00000 0.00000 0.00000 0.00000 0.00000 0.00000 filter offset: 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 delay 0.00000, dispersion 64.00000 offset 0.000000 server 216.45.57.38, port 123 stratum 0, precision 0, leap 00, trust 000 refid [216.45.57.38], delay 0.00000, dispersion 64.00000 transmitted 4, in filter 4 reference time: 00000000.00000000 Thu, Feb 7 2036 0:28:16.000 originate timestamp: 00000000.00000000 Thu, Feb 7 2036 0:28:16.000 transmit timestamp: d1a71a93.524a05dd Sat, Jun 18 2011 7:37:39.321 filter delay: 0.00000 0.00000 0.00000 0.00000 0.00000 0.00000 0.00000 0.00000 filter offset: 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 delay 0.00000, dispersion 64.00000 offset 0.000000 server 64.6.144.6, port 123 stratum 0, precision 0, leap 00, trust 000 refid [64.6.144.6], delay 0.00000, dispersion 64.00000 transmitted 4, in filter 4 reference time: 00000000.00000000 Thu, Feb 7 2036 0:28:16.000 transmitted 4, in filter 4 reference time: 00000000.00000000 Thu, Feb 7 2036 0:28:16.000 originate timestamp: 00000000.00000000 Thu, Feb 7 2036 0:28:16.000 transmit timestamp: d1a71a93.524a05dd Sat, Jun 18 2011 7:37:39.321 filter delay: 0.00000 0.00000 0.00000 0.00000 0.00000 0.00000 0.00000 0.00000 filter offset: 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 delay 0.00000, dispersion 64.00000 offset 0.000000 server 64.6.144.6, port 123 stratum 0, precision 0, leap 00, trust 000 refid [64.6.144.6], delay 0.00000, dispersion 64.00000 transmitted 4, in filter 4 reference time: 00000000.00000000 Thu, Feb 7 2036 0:28:16.000 originate timestamp: 00000000.00000000 Thu, Feb 7 2036 0:28:16.000 transmit timestamp: d1a71a93.857c6fbd Sat, Jun 18 2011 7:37:39.521 filter delay: 0.00000 0.00000 0.00000 0.00000 0.00000 0.00000 0.00000 0.00000 filter offset: 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 delay 0.00000, dispersion 64.00000 offset 0.000000 18 Jun 07:37:40 ntpdate[10737]: no server suitable for synchronization found

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• Nvidia driver overscan issue second monitor via dvi-d cable

  - by benmichael

  Ok, I know that I have a bit of a bizarre setup, but here goes. I have an old laptop, HP Pavilion 6000. The graphics card in there is a GeForce 7150M. The monitor connection is an old 18pin. The external monitor I use is a Samsung SyncMaster 2333. Don't ask me why, but this monitor only has a dvi-d connection (yes, i have searched it). So I have the monitor plugged into the laptop. If I use any of the Nvidia propriety drivers and try to set the resolution up to 1920x1080 (the monitor's native resolution), I get a massive overscan issue. Over the years I have tried to get this to work, tinkering with my xorg.conf to death. I have also tried this on every Ubuntu since 10.04, on all the corresponding LUbuntus, and on all the Linux Mints since Lisa. Exact same issue. I have even tried it in WinDoze and it works perfectly there (although I did get the error once, but was unable to reproduce it). Using the Open Source drivers it works perfectly iff I switch off the laptop monitor (this makes no difference with the Nvidia drivers). I would have happily gone on using the Open Source drivers, except that since upgrading to LUbuntu 12.10, the Open Source drivers make my monitor completely hazy and have the same overscan issue until I (through the haze, only because I know where things are) go to the monitor settings, activate the laptop's monitor, then deactivate it, and suddenly it comes right. I have to do this every time. So I have to find a way to fix one of them, so I may as well tackle the propriety drivers, hence this overlong question. Amidst other things, I have tried the nvidia-settings, but because it is connected to an 18pin, it detects the monitor as a vga monitor and does not give me overscan correction options. I have tried custom modlines (although there are always more of those try), I have tried using xrandr, and I have tried all the FlatPanelOptions. What I have not tried is a Gentoo build, as I don't have time any more to do that installation, but up to about three years ago when I ran Gentoo exclusively I did not have this issue. Below is an link to an image with a red highlight around the portion of the screen visible to me, the numbers around it are the number of pixels which are cut off. This does seem to drift a few pixels every now and then. Thanks in advance. Nvidia driver issue image

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• Formatting data from management database

  - by bVector

  I've got some data that goes like this: Config_Name Question Answer Cisco WAN Sensitivity: High Cisco WAN Authorized Users: Brent, Charles Cisco WAN Last Audited: n/a Cisco WAN Next Audit: 3/30/2012 Cisco WAN Audit Signature: Cisco WAN Username: MYCOMPANY Cisco WAN Password: Cisco WAN Encrypted-A ENCRYPTED DATA Cisco WAN Encrypted-B Cisco WAN Encrypted-C vCenter server Sensitivity: High vCenter server Authorized Users: Brent, Charles vCenter server Last Audited: vCenter server Next Audit: 3/30/2012 vCenter server Audit Signature: ENCRYPTED DATA vCenter server Username: administrator vCenter server Password: vCenter server Encrypted-A ENCRYPTED DATA vCenter server Encrypted-B vCenter server Encrypted-C AKSC-NE01 IPMI Sensitivity: High AKSC-NE01 IPMI Authorized Users: Brent, Charles AKSC-NE01 IPMI Last Audited: AKSC-NE01 IPMI Next Audit: 3/30/2012 AKSC-NE01 IPMI Audit Signature: ENCRYPTED DATA AKSC-NE01 IPMI Username: MYCOMPANY AKSC-NE01 IPMI Password: AKSC-NE01 IPMI Encrypted-A ENCRYPTED DATA AKSC-NE01 IPMI Encrypted-B AKSC-NE01 IPMI Encrypted-C and I need it to be in this format: Config_Name Sensitivity: Authorized Users: Last Audited: Next Audit: Audit Signature: Username: Password: Encrypted-A Encrypted-B Encrypted-C AKSC-NE01 IPMI High Brent, Charles 3/30/2012 ENCRYPTED DATA MYCOMPANY ENCRYPTED DATA Cisco ASA5505 WAN High Brent, Charles n/a 3/30/2012 ENCRYPTED DATA MYCOMPANY ENCRYPTED DATA vCenter server High Brent, Charles 3/30/2012 ENCRYPTED DATA administrator ENCRYPTED DATA the tabs get messed up on here but hopefully you get my drift. does anyone know an easy way to do this? I haven't found one with excel just yet.

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• Time not propagating to machines on Windows domain

  - by rbeier

  We have a two-domain Active Directory forest: ourcompany.com at the root, and prod.ourcompany.com for production servers. Time is propagating properly through the root domain, but servers in the child domain are unable to sync via NTP. So the time on these servers is starting to drift, since they're relying only on the hardware clock. WHen I type "net time" on one of the production servers, I get the following error: Could not locate a time-server. More help is available by typing NET HELPMSG 3912. When I type "w32tm /resync", i get the following: Sending resync command to local computer The computer did not resync because no time data was available. "w32tm /query /source" shows the following: Free-running System Clock We have three domain controllers in the prod.ourcompany.com subdomain (overkill, but the result of a migration - we haven't gotten rid of one of the old ones yet.) To complicate matters, the domain controllers are all virtualized, running on two different physical hosts. But the time on the domain controllers themselves is accurate - the servers that aren't DCs are the ones having problems. Two of the DCs are running Server 2003, including the PDC emulator. The third DC is running Server 2008. (I could move the PDC emulator role to the 2008 machine if that would help.) The non-DC servers are all running Server 2008. All other Active Directory functionality works fine in the production domain - we're only seeing problems with NTP. I can manually sync each machine to the time source (the PDC emulator) by doing the following: net time \\dc1.prod.ourcompany.com /set /y But this is just a one-off, and it doesn't cause automated time syncing to start working. I guess I could create a scheduled task which runs the above command periodically, but I'm hoping there's a better way. Does anyone have any ideas as to why this isn't working, and what we can do to fix it? Thanks for your help, Richard

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• time sync with ntpd

  - by guthrie

  I run Debian on several systems, and their times do not seem to stay in sync. I can run ntpdate manually, but I thought that I should have an ntpd running that would automate that. I did check with apt and apt-cache but don't find any ntpd (or associated ntpq), not any such names in my system (locate...), but ntp-doc does still describe them. Looking around I see that there is an ntpdate-debian command, and it uses /etc/default/ntpdate for servers (instead of the standard /etc/ntp.conf), but even thought that file is there and has "yes" indicated to use ntp.conf, it fails with "no servers can be used", although ntpdate works fine. Is this just a layer over ntpdate, any reason to use it instead? So, why are they missing, do I need them, how do I automate time updates? Associated, two of my machines are virtualized on a MSoft VM, how is it that their clocks drift, and both to different values? (The underlying Windows machine clock seems stable). I see a few old notes about time & ntp problems on VMware, didn't find anything either current or relating to MSoft VMs. Anything I did see says just to use ntpd, but as above, ...?!

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• PEAP validating a secondary domain suffix

  - by sam

  Probably the title is a little bit confusing, let me explain the situation. Our company wants to implement a corporate wireless lan with PEAP authentication. unfortunately someone made a big mistake in our AD design 10 years ago. The domain name we are using "company.ch" is not owned by company but by someone else. so it is not possible to issue a public SSL certificate for the RADIUS server. Our AD is to big to rename it. We already thought about using our private PKI and rollout the CA certificate via GPO but that would only cover our corporate managed clients but not the BYOD (Smartphones, Tablets, Laptops..) Is there a way to add a secondary domain name like “company2.ch” and issue a public certificate and join that radius to that secondary domain aslwell, and configure that secondary dns suffix via DHCP for all the client pools... or is there another way with for example a new radius server which has his own domain company2.ch which is connected with some kind of trust between the company.ch doamin? sorry i'am not a client server guy.. hopefully you get my drift.!?

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• Time sync fails on Hyper-V VM, but succeeds when I log in as a domain user

  - by Richard Beier

  We have a Windows Server 2003 SP2 VM running on Hyper-V (Server 2008 R2 host). The VM has Hyper-V time synchronization enabled. I noticed that the time on the VM was fast by around 25 minutes. I saw the following in the event log: The time provider NtpClient is configured to acquire time from one or more time sources, however none of the sources are currently accessible. No attempt to contact a source will be made for 15 minutes. NtpClient has no source of accurate time. The time provider NtpClient cannot reach or is currently receiving invalid time data from ourdc.ourdomain.local (ntp.d|192.168.2.18:123-192.168.2.2:123). Time Provider NtpClient: No valid response has been received from domain controller ourdc.ourdomain.local after 8 attempts to contact it. This domain controller will be discarded as a time source and NtpClient will attempt to discover a new domain controller from which to synchronize. I had been logged in as a local user. (We have an old app that runs on this VM - it requires a user to be logged in at all times, and we use a non-domain user account for this.) When I logged in as a domain user, the clock almost immediately corrected itself. Running "w32tm /monitor" and "net time" as the domain user showed no errors, and indicated that our domain controller was the time source. Does anyone know what might cause this, and why logging in under a domain account fixes the problem? I'm wondering if the time will start to drift again. Thanks for your help, Richard

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• What can be done to improve time synchronization on networks with sporadic internet access?

  - by anregen

  I'm looking for advice setting up time servers for a very non-typical network. I support many closed networks that have occasional access to the internet. A network would get access most days for a few hours, but would frequently go 1-3 weeks blacked-out. The computers/servers on this network are mostly *nix-based, but not all the same flavor. The entire network is mobile, so when it connects, it will have very different hops/latency to internet time servers. The servers on the closed network are powered-off frequently (at least daily). Right now, my gut tells me to use NTP (because I hate re-learning all the stuff that someone else already got working pretty well). But I have several issues, and am looking for someone with experience in this type of strange situation. I currently have no solution in place, I'm simply letting the internal clocks drift. This results in errors of ~600s in a majority of networks. I have seen mismatch worse than 10,000s. Is there something "better" than NTP in this situation? I know NTP likes to have very frequent, consistent access to servers that give nearly identical answers. I won't have that. How many internal NTP servers should I configure, so that during periods of internet blackout, I have internal time that is consistent within the closed network? There is no human access. No matter how large the mismatch, the server(s) must attempt to correct itself. Discrete steps are very bad. No matter how large the mismatch, the correction must be "slewed", not "stepped". I understand that this could take many hours to correct.

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• Best way to say "sync all system clocks to this server, when and ONLY when I say so?" Mixed setup of Windows+Linux servers.

  - by twblamer

  Title pretty much explains it. Let's say there's 100 servers, various versions of Windows and Linux, and one Windows server is the "master clock." I did look at this question: How do I synchronize clocks between Linux and Windows? This hints that ntp can do what I want if I run "ntpd -q" on a client (?). If I install ntp I also need to guarantee that it will only sync the times when I force it to. Even better if I have a log that tells me every time a sync was performed. I'm doing benchmark runs and I need to be able to say something like this: "Clocks were synced on all the benchmark systems at 09:42:01am on the master. A benchmark run was then initiated and allowed to run for six hours. None of the system clocks were altered during this time interval." I understand there is subsequent clock drift, but for now that's the way we're doing things and I'm doing it with a manual process. I'd rather at least automate the one-time sync.

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• Expanding the Partner Ecosystem with Third-Party Plug-ins

  - by Joe Diemer

  Oracle Enterprise Manager’s extensibility capabilities are designed to allow customers and partners to adapt Enterprise Manager for management of heterogeneous environments with Plug-ins and Connectors.  Third-party developers continue to take advantage of Oracle Enterprise Manager’s Extensibility Development Kit (EDK) to build plug-ins to Enterprise Manager 12c, such as F5’s BIG IP Plug-in and Entuity’s Eye of the Storm Network Management Plug-In.  Partners can also validate their plug-ins through the Oracle Validated Integration (OVI) program, which assures customers that the plug-in has been tested and is functionally and technically sound, is designed in a reliable and standardized manner, and operates and performs as documented.   Two very recent examples of partners which have beta versions of their plug-ins are Blue Medora's VMware vSphere plug-in and the NetApp Storage plug-in.  VMware vSphere Plug-in by Blue Medora Blue Medora, an Oracle Partner Network (OPN) “Gold” member, which just announced that it is now signing up customers to try a beta version of their new VMware vSphere plug-in for Enterprise Manager 12c.  According to Blue Medora, the vSphere plug-in monitors critical VMware metrics (CPU, Memory, Disk, Network, etc) at the Host, VM, Cluster and Resource Pool levels.  It has minimal performance impact via an “agentless” approach that requires no installation directly on VMware servers.  It has discovery capabilities for VMware Datacenters, ESX Hosts, Clusters, Virtual Machines, and Datastores.  It offers integration of native VMware Events into Enterprise Manager, and it provides over 300 VMware-related health, availability, performance, and configuration metrics.  It comes with more than 30 out-of-the-box pre-defined thresholds and can manage VMware via a series of jobs split between cluster, host and VM target types.The company reports that the Enterprise Manager 12c plug-in supports vSphere versions 4.0, 4.5 and 5.0.  Platforms supported include Linux 64-bit, Windows, AIX and Solaris SPARC and x86.  Information about the plug-in, including how to sign up for the beta, is available at their web site at http://bluemedora.com after selecting the "Products" tab. NetApp Storage Plug-in NetApp believes the combination of storage system monitoring with comprehensive management of Oracle systems with Enterprise Manager will help customers reduce the cost and complexity of managing applications that rely on NetApp storage and Oracle technologies.  So, NetApp built a plug-in and reports that it has comprehensive availability and performance information for NetApp storage systems.  Using the plug-in, Oracle Enterprise Manager customers with NetApp storage solutions can track the association between databases and storage components and thereby respond to faults and IO performance bottlenecks quickly. With the latest configuration management capabilities, one can also perform drift analysis to make sure all storage systems are configured as per established gold standards. The company is also now signing up beta customers, which can be done at the NetApp Communities site at https://communities.netapp.com/groups/netapp-storage-system-plug-in-for-oem12c-beta. Learn More about Enterprise Manager Extensibility More plug-ins from other partners are soon to come, which I'll be reporting on them here.  To learn more about Enterprise Manager and how customers and partners can build plug-ins using the EDK to manage a multi-vendor data center, go to http://oracle.com/enterprisemanager in the Heterogeneous Management solution area.  The site also lists the plug-ins available with information on how to obtain them.  More info about the Oracle Validated Integration program can be found at the OPN Enterprise Manager Knowledge Zone in the "Develop" tab.

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• Unable to Sign in to the Microsoft Online Services Signin application from Windows 7 client located behind ISA firewall

  - by Ravindra Pamidi

  A while ago i helped a customer troubleshoot authentication problem with Microsoft Online Services Signin application.  This customer was evaluating Microsoft BPOS (Business Productivity Online Services) and was having trouble using the single sign on application behind ISA 2004 firewall.The network structure is fairly simple with single Windows 2003 Active Directory domain and Windows 7 clients. On a successful logon to the Microsoft Online Services Signin application, this application provides single signon functionality to all of Microsoft online services in the BPOS package. Symptoms:When trying to signin it fails with error "The service is currently unavailable. Please try again later. If problems continue, contact your service administrator". If ISA 2004 firewall is removed from the picture the authentication succeeds.Troubleshooting: Enabled ISA Server firewall logging along with Microsoft Network Monitor tool on the Windows 7 Client while reproducing the issue. Analysis of the ISA Server Firewall logs and Microsoft Network capture revealed that the Microsoft Online Services Sign In application when sending request to ISA Server does not send the domain credentials and as a result ISA Server responds with an error code of HTTP 407 Proxy authentication required listing out the supported authentication mechanisms.  The application in question is expected to send the credentials of the domain user in response to this request. However in this case, it fails to send the logged on user's domain credentials. Bit of researching on the Internet revealed that The "Microsoft Online Services Sign In" application by default does not support Outbound Internet Proxy authentication. In order for it to send the logged on user's domain credentials we had to make  changes to its configuration file "SignIn.exe.config" located under "Program Files\Microsoft Online Services\Sign In" folder. Step by Step details to configure the configuration file are documented on Microsoft TechNet website given below.  Configure your outbound authenticating proxy serverhttp://www.microsoft.com/online/help/en-us/helphowto/cc54100d-d149-45a9-8e96-f248ecb1b596.htm After the above problem was addressed we were still not able to use the "Microsoft Online Services Sign In" application and it failed with the same error.  Analysis of another network capture revealed that the application in question is now sending the required credentials and the connection seems to terminate at a later stage. Enabled verbose logging for the "Microsoft Online Services Sign In" application and then reproduced the problem. Analysis of the logs revealed a time difference between the local client and Microsoft Online services server of around seven minutes which is above the acceptable time skew of five minutes. Excerpt from Microsoft Online Services Sign In application verbose log:  1/26/2012 1:57:51 PM Verbose SingleSignOn.GetSSOGenericInterface SSO Interface URL: https://signinservice.apac.microsoftonline.com/ssoservice/UID1/26/2012 1:57:52 PM Exception SSOSignIn.SignIn The security timestamp is invalid because its creation time ('2012-01-26T08:34:52.767Z') is in the future. Current time is '2012-01-26T08:27:52.987Z' and allowed clock skew is '00:05:00'.1/26/2012 1:57:52 PM Exception SSOSignIn.SignIn  Although the Windows 7 Clients successfully synchronized time to the domain controller for the domain, the domain controller was not configured to synchronize time with external NTP servers. This caused a gradual drift in time on the network thus resulting in the above issue. Reconfigured the domain controller holding the PDC FSMO role to synchronize time with external time source ( time.nist.gov ) and edited the system policy on the ISA server firewall to allow NTP traffic to time.nist.gov Configure the time source for the forest:Windows Time Servicehttp://technet.microsoft.com/en-us/library/cc794937(WS.10).aspx Forced synchronization of Windows time using the command w32tm /resync on the domain controller and later on the clients each of which had corrected the seven minutes difference. This resolved the problem with logon to Microsoft Online Services Sign In.

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• Converting QXmlItem to QtDomElement or similar?

  - by EightyEight

  Hello everyone. I'm parsing a fairly complicated XML file of the following structure: <root> ... ... <item> <subitem id="1"/> <text> text1 </text> </item> <item> <subitem id="2"/> <text> text2 </text> </item> ... <item> ... </item> ...</root> It's pretty crude but you get my drift I hope. I'm primarily interested in "item" nodes. So I wrote the following code (directly out of the Qt's online manual): QXmlQuery query; query.setQuery("//item/"); QXmlResultItems result; query.evaluateTo(&result); QXmlItem item(result.next()); while (!item.isNull()) { if (item.isNode()) { // WHAT DO I DO NOW? } item = result.next(); } Now, QXmlItem appears to represent two concepts, a literal value (like a string) or a Node, (which is what item.isNode() is doing). Unfortunately, I can't grasp how to convert the QXmlItem to something that will query-able again. In particular from the example above I'd like to grab the "id" attribute, and the text element. Can I do this using the XQuery approach, or am I way off base here? Any advice? Thanks!

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• Best Practice: QT4 QList<Mything*>... on Heap, or QList<Mything> using reference?

  - by Mike Crowe

  Hi Folks, Learning C++, so be gentle :)... I have been designing my application primarily using heap variables (coming from C), so I've designed structures like this: QList<Criteria*> _Criteria; // ... Criteria *c = new Criteria(....); _Criteria.append(c); All through my program, I'm passing pointers to specific Criteria, or often the list. So, I have a function declared like this: QList<Criteria*> Decision::addCriteria(int row,QString cname,QString ctype); Criteria * Decision::getCriteria(int row,int col) which inserts a Criteria into a list, and returns the list so my GUI can display it. I'm wondering if I should have used references, somehow. Since I'm always wanting that exact Criteria back, should I have done: QList<Criteria> _Criteria; // .... Criteria c(....); _Criteria.append(c); ... QList<Criteria>& Decision::addCriteria(int row,QString cname,QString ctype); Criteria& Decision::getCriteria(int row,int col) (not sure if the latter line is syntactically correct yet, but you get the drift). All these items are specific, quasi-global items that are the core of my program. So, the question is this: I can certainly allocate/free all my memory w/o an issue in the method I'm using now, but is there are more C++ way? Would references have been a better choice (it's not too late to change on my side). TIA Mike

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• MySQL database design question

  - by Greelmo

  I'm trying to weigh the pros and cons of a database design, and would like to get some feedback as to the best approach. Here is the situation: I have users of my system that have only a few required items (username, password). They can then supply a lot of optional information. This optional information continues to grow as the system grows, so I want to do it in such a way that adding new optional information is easy. Currently, I have a separate table for each piece of information. For example, there's a table called 'names' that holds 'user_id', 'first_name', and 'last_name'. There's 'address', 'occupation', etc. You get the drift. In most cases, when I talk to my database, I'm looking only for users with one particular qualifier (name, address, etc.). However, there are instances when I want to see what information a user has set. The 'edit account' page, for example, must run queries for each piece of information it wants. Is this wasteful? Is there a way I can structure my queries or my database to make it so I never have to do one query for each piece of information like that without getting my tables to huge? If i want to add 'marital status', how hard will that be if I don't have a one-table-per-attribute system? Thanks in advance.

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