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  • Enterprise Library logging into database is very slow

    - by Sergej Andrejev
    I'm using enterprise library for logging web page events. Because page is load balanced I have to store logs in database on different server (requirement). Sadly, I found storing around 20 entries per page request is very slow (adds additional ~10s). Can anybody explain why this happens and how to fix it. P.S. I'm using default pooling settings in logging database connection string.

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  • pgSQL query error

    - by running4surival
    i tried using this query: "SELECT * FROM guests WHERE event_id=".$id." GROUP BY member_id;" and I'm getting this error: ERROR: column "guests.id" must appear in the GROUP BY clause or be used in an aggregate function can anyone explain how i can work around this?

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  • carry flag and subtraction issue!

    - by Zia ur Rahman
    If a large number is subtracted from a smaller number then borrow is needed. The carry flag plays the role of borrow during the subtraction operation. Now suppose we want to subtract 56 from 66, obviously the borrow is needed and carry flag will be set. Now how this subtraction is performed to get the result -10, how computer will distinguish that the result is going to be a negative number. Please explain the process.

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  • How to schedule a task X minutes after Windows Server 2003 starts?

    - by Joe Schmoe
    How to schedule a task X minutes after Windows Server 2003 starts? In "Scheduled Tasks" one can specify "When my computer starts" but I see no way to specify delay. What I am trying to achieve: there is a service (JIRA) that even though dependent on SQL Server service still doesn't wait long enough for SQL Server to become fully operational. So JIRA service fails to connect to the database and needs to be restarted manually after each server reboot. My plan is to add "SC stop" and "SC start" commands for JIRA service 3 minutes after server starts.

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  • Javascript: How to calculate the exact position of the viewport?

    - by batmanfu
    My problem is I need to get the position of the viewport relative to the extent of the entire document. I am only concerned with Firefox. My issue is that everything I have read says that: viewport height is window.innerHeight scroll position is window.pageYOffset document total height is document.height So, I would expect that if I scrolled to the bottom of a page that window.innerHeight + window.pageYOffset = document.height But it doesn't! Can someone please explain to me why this is?

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  • Problem with using the XPATH functions

    - by Alex
    I've got a problem with using the XPATH functions. When I try to call some functions like lower-case or upper-case etc,they are not executed and I can't figure the problem out. I included the namespace xmlns:fn="http://www.w3.org/2005/xpath-functions" at the top of my XSL stylesheet and use fn namespace to call these functions but anyway nothing is working. Can anyone explain the reason and what I should do in order to be able to use the following functions? Cheers

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  • Python - How is this snippet working?

    - by orokusaki
    For some reason this function confused me: def protocol(port): return port == "443" and "https://" or "http://" Can somebody explain the order of what's happening behind the scenes to make this work the way it does. I understood it as this until I tried it: Either A) def protocol(port): if port == "443": if bool("https://"): return True elif bool("http://"): return True return False Or B) def protocol(port): if port == "443": return True + "https://" else: return True + "http://" Is this some sort of special case in Python, or am I completely misunderstanding how statements work?

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  • Hooking up many different external HDs simultaneously

    - by cbizz
    I need a large amount of external storage for an upcoming project. I'm planning on purchasing 10 2TB external drives. I need them all hooked up to a single machine at the same time. What issues will I run into? I plan on using 2 power strips and having them all externally powered from the wall. I will use a USB hub to plug in all the drives. I need drive access time to be as fast as possible. I am using Ubuntu Linux(64 bit). Will I be able to mount 10 drives?

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  • database assignment

    - by eric
    Hi, Given the following table: CREATE TABLE T1 (A INTEGER NOT NULL); CREATE TABLE T3 (A SMALLINT NOT NULL); INSERT T1 VALUES (32768.5); SELECT * FROM T1; INSERT T3 SELECT * FROM T1; SELECT * FROM T3; What is the output of above query? If any error occured please declare the line of it?Explain your answer!

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  • How can I get all my itunes files from multiple computers onto my new PC?

    - by jasondavis
    Managing my itunes files (music,video,tv shows, iphone apps) is a really hard task and I have not had much luck yet. If I had a single PC for the rest of my life with the same hard drive, it would work great but infortunately it cannot be that simple. I just build a new PC as my old hard drive crashed with all my itunes purchased songs, video, etc. So is there anyway to get itunes to recognize that I own all them and let me re-download everything? As I see it so far, it knows what I own by my itunes account login (it knows if I purchased a file or not ever) but does not seem to let you just re-download everything to a new PC or new hard drive. I realize I should of had backups but I didn't. My backup plan is a work in process and it is getting much better but that doesnt help with my situation at the moment. So I am asking for any help, ideas of how to retrieve all my previous itunes purchases?

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  • Best way to partition 1 TB (Linux and Windows 7)

    - by Simon
    Is there an intelligent way to partition 1 TB and be prepared for resizing/adding/deleting partitions? I was thinking about LVM, but as far as I remember, Windows 7 can't be installed on logical volume right? For now my plan is: - ~150 GB for Windows 7 and other stuff (Visual Studio..., maybe I'll split it 100/50 or something like that) - simple NTFS - 850 GB = LVM - disk for Linux (Ubuntu) and other stuff virtual machines, etc. I'm mostly interested in how and what tools should I use to get easy in maintain partitions for both systems.

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  • Load balanced proxies to avoid an API request limit

    - by ClickClickClick
    There is a certain API out there which limits the number of requests per day per IP. My plan is to create a bunch of EC2 instances with elastic IPs to sidestep the limitation. I'm familiar with EC2 and am just interested in the configuration of the proxies and a software load balancer. I think I want to run a simple TCP Proxy on each instance and a software load balancer on the machine I will be requesting from. Something that allows the following to return a response from a different IP (round robin, availability, doesn't really matter..) eg. curl http://www.bbc.co.uk -x http://myproxyloadbalancer:port Could anyone recommend a combination of software or even a link to an article that details a pleasing way to pull it off? (My client won't be curl but is proxy aware.. I'll be making the requests from a Ruby script..)

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  • Preferred Access point name

    - by rantravee
    Hi, I'm hoping that someone will explain to me what preferred access point name refers to in the android system , and what is it's role . Also I'd like to know if by messing with all APN (adding a suffix to the "apn" and "type" fields to disable 3G/EDGE/GPRS connections , and the deleting this suffix ) , the preferred APN can be disrupted. Also if it need special settings in case an APN manipulation is desired.

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  • Survive a Software Audit

    - by rosepost1150
    I received a letter from Autodesk asking for a "License Assessment". I understand it as a software audit. They plan to do it remotely. The thing is, I'm a freelancer, I don't use any Software Asset Mangment software, and I just recently swap out my hard drive for a new one, and did a complete clean install, and then I received this request from Autodesk. There is almost nothing on my hard drive now. What do software auditors do when they experience this? Will they (are they allowed) to contact my clients (that info is all over the web..) to get information since they found nothing here?

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  • Will you install software on the same partition as Windows system?

    - by Tim
    I was wondering if you always install software on the same partition as Windows 7 system? What kinds of software do you install on the same partition as Windows system? What kinds of software you install on another partition? If you install software on another partition, do you install them on a dedicated partition to these software? Or do you install them on the same partition as data (personal data)? How do you plan the sizes for the partition(s) in either case? What are to consider when making plans about the above questions? The software I am installing include: Matlab, Mathematica, IDEs, compilers or Interpreters for C++, C, Java, R, Python, Perl, Lisp, Latex, and database. Mainly for programming and typesetting kinds of studies and projects.

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  • Warning produced by f#: value has been copied to ensure the original is not mutated

    - by user1878761
    The first definition below produces the warning in the title when compiled with f# 3.0 and the warning level set to 5. The second definition compiles cleanly. I wondered if someone could please explain just what the compiler worries I might accidentally mutate, or how would splitting the expression with a let clause help avoid that. Many thanks. let ticks_with_warning () : int64 = System.DateTime.Now.Ticks let ticks_clean () : int64 = let t = System.DateTime.Now t.Ticks

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  • Python new-style classes and __subclasses__ function

    - by Fraser Graham
    Can somebody explain to me why this works (in Python 2.5) : class Foo(object): pass class Bar(Foo): pass print(Foo.__subclasses__()) but this doesn't : class Foo(): pass class Bar(Foo): pass print(Foo.__subclasses__()) The latter returns "AttributeError: class Foo has no attribute '__subclasses__'" but i'm not sure why. I know this is related to old-style vs. new-style classes but i'm not clear on why that would make this functionality unavailable.

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  • Having trouble searching for a ‘.’ using htaccess.

    - by ThisLanham
    I'm setting up a website that (ideally) would allow users to access other users' homepages with a url in the format "www.mysite.com/ThisLanham" where 'ThisLanham' is the username. The username begins with a letter and can consists of any alphanumeric character along with an underscore, hyphen, or period. So far, the redirection has worked perfectly when I ignore usage of the period character. The following code handles that request: RewriteRule ^([a-zA-Z][0-9a-zA-Z-_]*)/?$ Page/?un=$1 [NC,L] However, I've tried a number of ways it check for the period as well, but all have resulted in a 500 Internal Server Error. Here are some my attempts: RewriteRule ^([a-zA-Z][0-9a-zA-Z-\_\\.]\*)/?$ Page/?un=$1 [NC,L] RewriteRule ^([0-9a-zA-Z-\_\\.]\*)/?$ Page/?un=$1 [NC,L] RewriteRule ^([a-zA-Z].\*)/?$ Page/?un=$1 [NC,L] RewriteRule ^(.\*)/?$ Page/?un=$1 [NC,L] also tried... RewriteCond $1 != index.php RewriteRule ^([a-z][0-9a-z-_.]*)/?$ Page/?un=$1 [NC,L] My backup plan is to no longer allow users to include periods in their usernames, but I'd much rather find a solution. Any ideas?

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  • Why does this compile?

    - by akf
    I was taken aback earlier today when debugging some code to find that something like the following does not throw a compile-time exception: public Test () { HashMap map = (HashMap) getList(); } private List getList(){ return new ArrayList(); } As you can imagine, a ClassCastException is thrown at runtime, but can someone explain why the casting of a List to a HashMap is considered legal at compile time?

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  • Is it safe to use an American power adapter in India and Australia?

    - by Stan
    I'm going to India and Australia on a business trip in a couple of days and plan to carry only a tablet instead of my trustworthy laptop (which got dunked in the tub by my oldest - don't ask). The adapter states the following: 100-240V~0.65A, 50/60Hz Output 12V===2A Will it be safe to use the adapter in these countries to charge my device, or do I have to buy new ones there? If the latter, what kind? What else should I take along with me? A surge protector?

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