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• Essbase BSO Data Fragmentation

  - by Ann Donahue

  Essbase BSO Data Fragmentation Data fragmentation naturally occurs in Essbase Block Storage (BSO) databases where there are a lot of end user data updates, incremental data loads, many lock and send, and/or many calculations executed.  If an Essbase database starts to experience performance slow-downs, this is an indication that there may be too much fragmentation.  See Chapter 54 Improving Essbase Performance in the Essbase DBA Guide for more details on measuring and eliminating fragmentation: http://docs.oracle.com/cd/E17236_01/epm.1112/esb_dbag/daprcset.html Fragmentation is likely to occur in the following situations: Read/write databases that users are constantly updating data Databases that execute calculations around the clock Databases that frequently update and recalculate dense members Data loads that are poorly designed Databases that contain a significant number of Dynamic Calc and Store members Databases that use an isolation level of uncommitted access with commit block set to zero There are two types of data block fragmentation Free space tracking, which is measured using the Average Fragmentation Quotient statistic. Block order on disk, which is measured using the Average Cluster Ratio statistic. Average Fragmentation Quotient The Average Fragmentation Quotient ratio measures free space in a given database.  As you update and calculate data, empty spaces occur when a block can no longer fit in its original space and will either append at the end of the file or fit in another empty space that is large enough.  These empty spaces take up space in the .PAG files.  The higher the number the more empty spaces you have, therefore, the bigger the .PAG file and the longer it takes to traverse through the .PAG file to get to a particular record.  An Average Fragmentation Quotient value of 3.174765 means the database is 3% fragmented with free space. Average Cluster Ratio Average Cluster Ratio describes the order the blocks actually exist in the database. An Average Cluster Ratio number of 1 means all the blocks are ordered in the correct sequence in the order of the Outline.  As you load data and calculate data blocks, the sequence can start to be out of order.  This is because when you write to a block it may not be able to place back in the exact same spot in the database that it existed before.  The lower this number the more out of order it becomes and the more it affects performance.  An Average Cluster Ratio value of 1 means no fragmentation.  Any value lower than 1 i.e. 0.01032828 means the data blocks are getting further out of order from the outline order. Eliminating Data Block Fragmentation Both types of data block fragmentation can be removed by doing a dense restructure or export/clear/import of the data.  There are two types of dense restructure: 1. Implicit Restructures Implicit dense restructure happens when outline changes are done using EAS Outline Editor or Dimension Build. Essbase restructures create new .PAG files restructuring the data blocks in the .PAG files. When Essbase restructures the data blocks, it regenerates the index automatically so that index entries point to the new data blocks. Empty blocks are NOT removed with implicit restructures. 2. Explicit Restructures Explicit dense restructure happens when a manual initiation of the database restructure is executed. An explicit dense restructure is a full restructure which comprises of a dense restructure as outlined above plus the removal of empty blocks Empty Blocks vs. Fragmentation The existence of empty blocks is not considered fragmentation.  Empty blocks can be created through calc scripts or formulas.  An empty block will add to an existing database block count and will be included in the block counts of the database properties.  There are no statistics for empty blocks.  The only way to determine if empty blocks exist in an Essbase database is to record your current block count, export the entire database, clear the database then import the exported data.  If the block count decreased, the difference is the number of empty blocks that had existed in the database.

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• generating maps

  - by gardian06

  This is a conglomeration question when answering please specify which part you are addressing. I am looking at creating a maze type game that utilizes elevation. I have a few features I would like to have, but am unsure as to some of the implementation. I have done work doing fileIO maze generation (using a key to read the file, and then generate the level based on that file), but I am unsure how to think about this with elevation in the mix. I think height maps might be a good approach, but don't know how to represent them effectively. for a height map which is more beneficial XML(containing h[u,v] data and key definition), CSV (item1 is key reference, item2 is elevation), or another approach that I have not thought of yet? When it comes to placing the elevation values themselves what kind of deltah values are appropriate to have it noticeable at about a 60degree angle while not really effecting gravity driven physics (assuming some effect while moving up/down hill)? I am thinking of maybe going to procedural generation at some point, but am wondering if it is practical to have a procedurally generated grid (wall squares possibly same dimensions as the open space squares), or if designing to a thin wall open spaces is better? this decision will effect the amount of work need on the graphics end for uniform vs. irregular walls. EDIT: game will be a elevation maze shooter. levels/maps will be mazes with elevation the player has to negotiate. elevations will have effects on "combat" vision, and movement

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• unable to recover data from failed hdd

  - by Eslam Elyamany

  my hdd failing (or maybe totally dead) i've connected the hdd via USB but it doesn't appear in fdisk Disk /dev/sda: 500.1 GB, 500107862016 bytes 255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk identifier: 0xe9fb38fb Device Boot Start End Blocks Id System /dev/sda1 * 2048 206847 102400 7 HPFS/NTFS/exFAT /dev/sda2 206848 40959999 20376576 7 HPFS/NTFS/exFAT /dev/sda4 40962046 976771071 467904513 5 Extended Partition 4 does not start on physical sector boundary. /dev/sda5 82913280 86910975 1998848 82 Linux swap / Solaris /dev/sda6 86913024 394113023 153600000 7 HPFS/NTFS/exFAT /dev/sda7 40962048 82913279 20975616 83 Linux /dev/sda8 394122708 976768064 291322678+ 7 HPFS/NTFS/exFAT Partition 8 does not start on physical sector boundary. no sdc appears here , BUT it's appears on /dev/ rootghost-lap:/home/ghost# ls /dev/sd* /dev/sda /dev/sda2 /dev/sda5 /dev/sda8 /dev/sdb /dev/sdc1 /dev/sdc2 /dev/sdc6 /dev/sdc8 /dev/sda1 /dev/sda4 /dev/sda6 /dev/sda9 /dev/sdc /dev/sdc10 /dev/sdc5 /dev/sdc7 /dev/sdc9 also it appears in proc Code: rootghost-lap:/home/ghost# cat /proc/partitions major minor #blocks name 8 0 488386584 sda 8 1 102400 sda1 8 2 20376576 sda2 8 4 1 sda4 8 5 1998848 sda5 8 6 153600000 sda6 8 8 291322678 sda8 8 9 20975616 sda9 11 0 1048575 sr0 11 1 99136 sr1 8 32 244198583 sdc 8 33 14651248 sdc1 8 34 1 sdc2 8 37 15380480 sdc5 8 38 4153344 sdc6 8 39 48829536 sdc7 8 40 48829536 sdc8 8 41 110374551 sdc9 8 42 1975963 sdc10 and dmesg : [10604.777168] end_request: I/O error, dev sdc, sector 1 [10604.817238] sd 26:0:0:0: [sdc] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [10604.817243] sd 26:0:0:0: [sdc] Sense Key : Aborted Command [current] [10604.817248] sd 26:0:0:0: [sdc] Add. Sense: No additional sense information [10604.817253] sd 26:0:0:0: [sdc] CDB: Read(10): 28 00 00 00 00 02 00 00 06 00 ok now , let's see what i've tried testdisk to check for partitions -- failed dd to copy data from /dev/sdcX -- provide strange output size for example /dev/sdc1 is about 15G , the output for dd is 62G+ so i had to cancle it safecopy successfully made an image for partitons , but can't fix images, can't mount it, can't do any thing with it and some other tools i've tried and all failed , so any idea ?

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• Restoring MBR, partition table, and boot sector of memory card without data loss ("USBC")

  - by Synetech

  Abstract I have a FAT32 memory card that when inserted into a computer causes Windows to prompt to format it. The card is definitely not supposed to be blank and has a bunch of files on it. Symptoms Using a hex-editor/disk-viewer, I examined the card and found that several sectors/clusters have been overwritten with something that has a signature of USBC at the start of the sector. Specifically, the master boot record (and partition table) is gone (hence Windows thinking the card is blank and needing to be formatted), as are the boot sectors (they have the USBC signature and a volume label of NO NAME and partition type of FAT32). Fortunately, it looks like both copies of the FAT are almost entirely intact (a few FAT entries at the start of a cluster here and there seem to be overwritten by USBC). The root directory is also nearly intact—I can see the volume label entry and subdirectory listings, but one sector is overwritten. (There are no more instances of USBC after the last one in the FAT2.) Hypothesis These observations seem to indicate some sort of virus that erases a few key filesystem structures, and then overwrites a few extra sectors here and there. Googling it seems to corroborate the idea of a virus, except that others report a file called USBC which does not apply here, and in fact, could not be possible since there is no filesystem to even see files. I cannot find any information about a virus with these symptoms, nor a removal tool. (I can't help but wonder if it is actually due to an autorun virus prevention tool.) Question I can likely fix the FAT corruption since they are mostly contiguous chains and maybe even the lost sector of the root directory, but does anyone know of a convenient way to restore or (re)create the MBR/partition table and boot sectors (without formatting or overwriting the data)?

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• Set up layer 2 vlan between 2 data centres

  - by user41679

  Hello, Our data centre provider operates 2 sites, and we currently have equipment in one and would like to have equipment in the second. They've told me that they operate a layer 2 vlan between the 2 sites over a 20gbit connection, and that they'd just give me ethernet cable at each end to connect the locations. At the current site, we have Cisco 2960 48TC-L switches, all the machines are on a 192.168.x.x subnet and we have cisco firewalls with which we connect to our internet provider with. My question is what would I need to do to connect the 2 sites? could I just plug the ethernet cables the provide into the cisco switches, and have the same switches the other end? would I need to set up a separate internal network on the other side and connect both through the firewalls? Would the cisco switches need special configuration? We expect to maintain a number of connections between the 2 sites, and each site would have its own internal dns name like dc1.xx.com. Sorry if I'm being vague or haven't included enough information, I've a fairly good knowledge of hardware but we're down a netops guy at the moment and I'd like to get both sites on-line ASAP! Thanks in advance!

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• WCF code generation for large/complex schema (HR-XML/OAGIS) - is there an alternative?

  - by Sasha Borodin

  Hello, and thank you for reading. I am implementing a WCF Service based on a predefined specification (HR-XML 3.0). As such, I am starting with the schema, and working my way back to code. There are a number of large Schema documents (which import yet more Schema documents) related to my implementation, provided by this specification. I am able to generate code using xsd.exe, by supplying the "main" and "supporting" xsd files as arguments. But there are several issues, and I am wondering if this is the right approach. there are litterally hundreds of classes - the code file is half a meg in size duplicate classes (ex. Type, Type1 - which both represent the same type) there are classes declared as inheriting from a base class, but that base class is not generated/defined I understand that there are limitations to the types of Schema supported by svcutil.exe/xsd.exe when targeting the DataContractSerializer and even XmlSerializer. My question is two-fold: Are code generation "issues" fairly common when dealing with larger, modular xsd files? Has anyone had success with generating data contracts from OAGIS or HR-XML schema? Given the above issues, are there better approaches to this task, avoiding generating code and working with concrete objects? Does it make better sence to read and compose a SOAP message directly, while still taking advantage of the rest of the WCF framework? I understand that I am loosing the convenience of working with .NET objects, and the framekwork-provided (de)serialization; given these losses, would it still be advantageous to base my Service on WCF? Is there some "middle ground" between working with .NET types and pure XML? Thank you very much! -Sasha Borodin DFWHC.org

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• Intelligent search and generation of Java code, preferrably using Python?

  - by Ipsquiggle

  Basically, I do lots of one-off code generation, large-scale refactorings, etc. etc. in Java. My tool language of choice is Python, but I'll take whatever solutions you can offer. Here is a simplified illustration of what I would like, in a pseudocode Generating an implementation for an interface search within my project: for each Interface as iName: write class(name=iName+"Impl", implements=iName) search within the body of iName: for each Method as mName: write method(name=mName, body="// TODO implement this...") Basically, the tool I'm searching for would allow me to: parse files according to their Java structure ("search for interfaces") search for words contextualized by language elements and types ("variables of type SomeClass", "doStuff() method calls on SomeClass instances") to run searches with structural context ("within the body of the current result") easily replace or generate code (with helpers to generate, as above, or functions for replacing, "rename the interface to Foo", "insert the line Blah.Blah()", etc.) The point is, I don't want to spend a lot of time writing these things, as they are usually throwaway. But sometimes I need something just a little smarter than what grep offers. It wouldn't be too hard to write up a simplistic version of this, but if I'm going to use something like this at all, I'd expect it to be robust. Any suggestions of a tool/library that will help me accomplish this?

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• OData to the rescue. Exposing the eventlog as a data feed

  - by cibrax

  In one of the project where I was working one, we used the Microsoft Enterprise Library Exception Application Block integration with WCF for logging all the technical issues on the services/backend in Windows Event Log. This application block worked like a charm, all the errors were correctly logged on the Event Log without even needing to modify the service code. However, we also needed to provide a quick way to expose all those events to the different system users so they could get access to all the them remotely. In just a couple of minutes I came up with a simple solution based on ADO.NET Data Services. ADO.NET data services is very powerful in this sense, you only need to provide a IQueryable implementation, and that’s all. You get a RESTful service with rich query support for free. In this sample, I used Linq to Objects to get the latest entries from the Event Log, and I also filter the entries by the category used by the Application Block to avoid loading unnecessary entries in memory. public class LogDataSource     {         string source;         public LogDataSource(string source)         {             this.source = source;         }         public LogDataSource()         {         }         public IQueryable<LogEntry> LogEntries         {             get { return GetEntries().AsQueryable().OrderBy(e => e.TimeGenerated); }         }         private IEnumerable<LogEntry> GetEntries()         {             var applicationLog = System.Diagnostics.EventLog.GetEventLogs().Where(e => e.Log == "Application")                 .FirstOrDefault();             var entries = new List<LogEntry>();             if (applicationLog != null)             {                 foreach (EventLogEntry entry in applicationLog.Entries)                 {                     if (source == null || entry.Source.Equals(source, StringComparison.InvariantCultureIgnoreCase))                     {                         entries.Add(new LogEntry                         {                             Category = entry.Category,                             EventID = entry.InstanceId,                             Message = entry.Message,                             TimeGenerated = entry.TimeGenerated,                             Source = entry.Source,                         });                     }                 }             }             return entries.OrderByDescending(e => e.TimeGenerated)                         .Take(200);         }     } LogEntry is class I created for this service to expose an Event Log Entry.     [EntityPropertyMappingAttribute("Source",         SyndicationItemProperty.Title,         SyndicationTextContentKind.Plaintext, true)]     [EntityPropertyMapping("Message",         SyndicationItemProperty.Summary,         SyndicationTextContentKind.Plaintext, true)]     [EntityPropertyMapping("TimeGenerated",         SyndicationItemProperty.Updated,         SyndicationTextContentKind.Plaintext, true)]     [DataServiceKey("EventID")]     public class LogEntry     {         public long EventID         {             get;             set;         }         public string Category         {             get;             set;         }         public string Message         {             get;             set;         }         public DateTime TimeGenerated         {             get;             set;         }         public string Source         {             get;             set;         }     } As you can see, I used the new feature “Friendly feeds” to map several properties in the entries with standard ATOM elements. The “DataServiceKey” is only necessary because I am using the Reflection Provider (the exposed IQueryable implementation is just Linq to Objects) rather than the default Entity Framework Provider. The data service implementation is also quite simple, just a couple of lines were needed to expose the data source created previously. public class LogDataService : DataService<LogDataSource>     {         public static void InitializeService(IDataServiceConfiguration config)         {             config.SetEntitySetAccessRule("*", EntitySetRights.AllRead);         }         protected override LogDataSource CreateDataSource()         {             string source = ConfigurationManager.AppSettings["EventLogSource"];             if (source == null)             {                 throw new ApplicationException("The EventLogSource appsetting is missing in the configuration file");             }             return new LogDataSource(source);         }     } With this implementation in place, the final users not only get a feed with all the latest errors in the event log, but also support for performing queries against that data. This is one of the great things about ADO.NET Data services.

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• Visiting the Emtel Data Centre

  Back in February at the first event of the Emtel Knowledge Series (EKS) I spoke to various people at Emtel about their data centre here on the island. I was trying to see whether it would be possible to arrange a meeting over there for a selected group of our community members. Well, let's say it like this... My first approach wasn't that promising and far from successful but during the following months there were more and more occasions to get in touch with the "right" contact persons at Emtel to make it happen... Setting up an appointment and pre-requisites The major improvement came during a Boot Camp for Windows Phone 8.1 App development organised by Microsoft Indian Ocean Islands in cooperation with Emtel at the Emtel World, Ebene. Apart from learning bits and pieces regarding Universal Apps I took the opportunity to get in touch with Arvin Lockee, Sales Executive - Data, during our lunch break. And this really kicked off the whole procedure. Prior to get access to the Emtel data centre it is requested that you provide full name and National ID of anyone going to visit. Also, it should be noted that there was only a limited amount of seats available. Anyways, packed with this information I posted through the usual social media channels. Responses came in very quickly and based on First-come, first-serve (FCFS) principle I noted down the details and forwarded them to Emtel in order to fix a date and time for the visit. In preparation on our side, all attendees exchanged contact details and we organised transport options to go to the data centre in Arsenal. The day before and on the day of our meeting, Arvin send me a reminder to check whether everything is still confirmed and ready to go... Of course, it was! Arriving at the Emtel Data Centre As I'm coming from Flic En Flac towards the North, we agreed that I'm going to pick up a couple of young fellows near the old post office in Port Louis. All went well, except that Sean eventually might be living in another time zone compared to the rest of us. Anyway, after some extended stop we were complete and arrived just in time in Arsenal to meet and greet with Ish and Veer. Again, Emtel is taking access procedures to their data centre very serious and the gate stayed close until all our IDs had been noted and compared to the list of registered attendees. Despite having a good laugh at the mixture of old and new ID cards it was a straight-forward processing. The ward was very helpful and guided us to the waiting area at the entrance section of the building. Shortly after we were welcomed by Kamlesh Bokhoree, the Data Centre Officer. He gave us brief introduction into the rules and regulations during our visit, like no photography allowed, not touching the buttons, and following his instructions through the whole visit. Of course! Inside the data centre Next, he explained us the multi-factor authentication system using a combination of bio-metric data, like finger print reader, and "classic" pin panel. The Emtel data centre provides multiple services and next to co-location for your own hardware they also offer storage options for your backup and archive data in their massive, fire-resistant vault. Very impressive to get to know about the considerations that have been done in choosing the right location and how to set up the whole premises. It should also be noted that there is 24/7 CCTV surveillance inside and outside the buildings. Strengths of the Emtel TIER 3 Data Centre, Mauritius Finally, we were guided into the first server room. And wow, the whole setup is cleverly planned and outlined in the architecture. From the false floor and ceilings in order to provide optimum air flow, over to the separation of cold and hot aisles between the full-size server racks, and of course the monitored air conditions in order to analyse and watch changes in temperature, smoke detection and other parameters. And not surprisingly everything has been implemented in two independent circuits. There is a standardised classification for the construction and operation of data centres world-wide, and the Emtel's one has been designed to be a TIER 4 building but due to the lack of an alternative power supplier on the island it is officially registered as a TIER 3 compliant data centre. Maybe in the long run there might be a second supplier of energy next to CEB... time will tell. Luckily, the data centre is integrated into the National Fibre Optic Gigabit Ring and Emtel already connects internationally through diverse undersea cable routes like SAFE & LION/LION2 out of Mauritius and through several other providers for onwards connectivity. The data centre is part of the National Fibre Optic Gigabit Ring and has redundant internet connectivity onwards. Meanwhile, Arvin managed to join our little group of geeks and he supported Kamlesh in answering our technical questions regarding the capacities and general operation of the data centre. Visiting the NOC and its dedicated team of IT professionals was surely one of the visual highlights. Seeing their wall of screens to monitor any kind of activities on the data lines, the managed servers and the activity in and around the building was great. Even though I'm using a multi-head setup since years I cannot keep it up with that setup... ;-) But I got a couple of ideas on how to improve my work spaces here at the office. Clear advantages of hosting your e-commerce and mobile backends locally After the completely isolated NOC area we continued our Q&A session with Kamlesh and Arvin in the second server room which is dedictated to shared environments. On first thought it should be well-noted that there is lots of space for full-sized racks and therefore co-location of your own hardware. Actually, given the feedback that there will be upcoming changes in prices the facilities at the Emtel data centre are getting more and more competitive and interesting for local companies, especially small and medium enterprises. After seeing this world-class infrastructure available on the island, I'm already considering of moving one of my root servers abroad to be co-located here on the island. This would provide an improved user experience in terms of site performance and latency. This would be a good improvement, especially for upcoming e-commerce solutions for two of my local clients. Later on, we actually started the conversation of additional services that could be a catalyst for the local market in order to attract more small and medium companies to take the data centre into their evaluations regarding online activities. Until today Emtel does not provide virtualised server environments but there might be ongoing plans in the future to cover this field as well. Emtel is a mobile operator and internet connectivity provider in the first place, entering a market of managed and virtualised server infrastructures including capacities in terms of cloud storage and computing are rather new and there is a continuous learning curve at Emtel, too. You cannot just jump into a new market and see how it works out... And I appreciate Emtel's approach towards a solid fundament and then building new services on top of that. Emtel as a future one-stop-shop service provider for all your internet and telecommunications needs. Emtel's promotional video about their TIER 3 data centre in Arsenal, Mauritius More details are thoroughly described in Emtel's brochure of their data centre. Check out their PDF document here. Thanks for this opportunity Visiting and walking through the Emtel data centre for more than 2 hours was a great experience. As representative of the Mauritius Software Craftsmanship Community (MSCC) I would like to thank anyone at Emtel involved in the process of making it happen, and especially to Arvin Lockee and Kamlesh Bokhoree for their time and patience in explaining the infrastructure and answering all the endless questions from our members. Thank You!

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• How to load Foreign key referenced tables data also in entity framework

  - by Vinni

  I developed and entity framework (.edmx) application in 4.0 in that i got all the data of my querying table and its foreign key referenced tables data also. but when i change my project to 3.5 i am unable to get the data of foreign key referenced tables data. Please help me out...

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• Jquery data retrival returns null with json data

  - by user545520

  Hello Everyone, I have below sample json file: {"jsonData":{"REC":[{"TEST":"T","TEST1":"T1","TEST2":"T2"},{"R":"R","R1":"R1","R3":"R3"}], "DATA":{"FIRST":0,"SEC":1}}}. I want to retrieve data from json file,i am try like below,but it is giving null. from result object:i am retrieving data like below: to retrive the value T: this.jsonData.REC.TEST To retrieve the value R1: this.jsonData.DATA.FIRST Please correct me if i am doing any wrong. Thanks in Advance.

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• Is information a subset of data?

  - by Jason Baker

  I apologize as I don't know whether this is more of a math question that belongs on mathoverflow or if it's a computer science question that belongs here. That said, I believe I understand the fundamental difference between data, information, and knowledge. My understanding is that information carries both data and meaning. One thing that I'm not clear on is whether information is data. Is information considered a special kind of data, or is it something completely different?

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• MySQL data type: Text,,, Erroring: Data Too Long

  - by nobosh

  I have a field as follows in MySQL: Type: Text Length: 0 Decimals: 0 And when I try to insert data around the size of 4 pages of MS Word, Coldfusion errors with: Data Too Long from the DB. I thought TEXT data type was able to expand and handle this size of data? What am I missing and what can I do?

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• Data Access Layer - static list objects and caching

  - by Truegilly

  Hello, i am devloping a site using .net MVC i have a data access layer which basically consists of static list objects that are created from data within my database. The method that rebuilds this data first clears all the list objects. Once they are empty it then add the data. Here is an example of one of the lists im using. its a method which generates all the UK postcodes. there are about 50 methods similar to this in my application that return all sorts of information, such as towns, regions, members, emails etc. public static List<PostCode> AllPostCodes = new List<PostCode>(); when the rebuild method is called it first clears the list. ListPostCodes.AllPostCodes.Clear(); next it re-bulilds the data, by calling the GetAllPostCodes() method /// <summary> /// static method that returns all the UK postcodes /// </summary> public static void GetAllPostCodes() { using (fab_dataContextDataContext db = new fab_dataContextDataContext()) { IQueryable AllPostcodeData = from data in db.PostCodeTables select data; IDbCommand cmd = db.GetCommand(AllPostcodeData); SqlDataAdapter adapter = new SqlDataAdapter(); adapter.SelectCommand = (SqlCommand)cmd; DataSet dataSet = new DataSet(); cmd.Connection.Open(); adapter.FillSchema(dataSet, SchemaType.Source); adapter.Fill(dataSet); cmd.Connection.Close(); // crete the objects foreach (DataRow row in dataSet.Tables[0].Rows) { PostCode postcode = new PostCode(); postcode.ID = Convert.ToInt32(row["PostcodeID"]); postcode.Outcode = row["OutCode"].ToString(); postcode.Latitude = Convert.ToDouble(row["Latitude"]); postcode.Longitude = Convert.ToDouble(row["Longitude"]); postcode.TownID = Convert.ToInt32(row["TownID"]); AllPostCodes.Add(postcode); postcode = null; } } } The rebuild occurs every 1 hour. this ensures that every 1 hour the site will have fresh set of cached data. the issue ive got is that occasionally if during a rebuild, the server will be hit by a request and an exception is thrown. The exception is "Index was outside the bounds of the array." it is due to when a list is being cleared. ListPostCodes.AllPostCodes.Clear(); - // throws exception - although its not always in regard to this list. Once this exception is thrown application dies, All users are affected. I have to restart the server to fix it. i have 2 questions... If i utilise caching instead of static objects would this help ? Is there any way i can say "while the rebuild is taking place, wait for it to complete until accepting requests" any help is most appricaiated ;) truegilly

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• Java Applet question regarding data manipulation

  - by seraphina

  Generally, how does a java applet manipulate user data? Take for instance "shopping carts" on shopping websites - after a user enters the data, is the data then preloaded each time a user accesses a website? Or is the data retrieved as the user is on the page?

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• Get value of "data"

  - by Nicole Loyal-Windham

  Hi, I need to figure out the value of data strings with jquery, for example like this: { label: "Beginner", data: 2}, { label: "Advanced", data: 12}, { label: "Expert", data: 22}, to add them up. Something like: var sum = data1+data2+data3; alert(sum); So the result for this example would be 36. Appreciate your help! Nicole

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• Parsing data from xml and send that data into SQlite database in c#

  - by ashishtripathi.hcu

  Hi.. I have to parse xml file and after parsing I have to out related data in sqlite by using c#. I have parsed the xml file but not able to transfer those data into Sqlite data base. There are some problem while doing so. as I am not able to find System.Data.Sqlite even I have installed sqlite. Thanks...

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• jQuery loop through data() object

  - by bartclaeys

  Is it possible to loop through a data() object? Suppose this is my code: $('#mydiv').data('bar','lorem'); $('#mydiv').data('foo','ipsum'); $('#mydiv').data('cam','dolores'); How do I loop through this? Can each() be used for this?

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• Prepopulate jQuery Data in html

  - by Mikael

  jQuery has the very cool feature/method ".data", i wonder if there is a way to have the data in the code so that jQuery can use it when the rendering of html is done. Suppose i have a repeater and looping out children, and i want to add some data to those children without using classes etc. Will i have to add javascript to that repeater just to add stuff to the "data of jquery" or is there some better way?

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• Serializing persistent/functional data structures

  - by Rob

  Persistent data structures depend on the sharing of structure for efficiency. For an example, see here. How can I preserve the structure sharing when I serialize the data structures and write them to a file or database? If I just naively traverse the datastructures, I'll store the correct values, but I'll lose the structure sharing. I'd like to be able to save data-structures with shared components to a file, restore them, and still have most of the structure shared in the restored data.

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• UPLOAD DATA IN DATA BASE

  - by rajson

  HI friends, i wish to store image and resume of user in the data base. i am using mysql data base and php5. i want to know that which field i set means data type.and how i set the range (maximum size) for uploaded data.

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• How does Core Data work

  - by Jason

  Ive tried to gather information on as to how core data works, but can someone give me a clear explanation of all the stuff required...For instance NSDataContext, Fetchcontroller, NSDataModel, Presistent... Perhaps all the steps involved to get a data...Now I'm also unclear about an SQLite file, like how do we load the data into the core data , once we have created our entities etc.. Thanks

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• Error: Attempted to access data(2,:); index out of bounds because size(data)=[1,7129].

  - by Mola

  I have a microarray data of 38 row and 7130 columns. i am teying to read the data but keeping having the above error. I debugged and found when i read the data, i have a 1x7129 instead of a 38x7130. I don't know why. my 7130th column contains letters while the rest of the data are numbers. Any idea why this is happening?

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• Enterprise Data Quality - New and Improved on Oracle Technology Network

  - by Mala Narasimharajan

  Looking for Enterprise Data Quality technical and developer resources on your projects? Wondering where the best place is to go for finding the latest documentations, downloads and even code samples and libraries?  Check out the new and improved Oracle Technical Network pages for Oracle Enterprise Data Quality.  This section features developer forums as well for EDQ and Master Data Management so that you can connect with other technical professionals who have submitted concerns or posted tips and tricks and learn from them.  Here are the links to bookmark:    Oracle Technology Network website * NEW *   Installation Guide for Enterprise Data Quality Address Verification  Enterprise Data Quality Forum For more information on Oracle's software offerings for data quality and master data management visit:  http://www.oracle.com/us/products/applications/master-data-management/index.html http://www.oracle.com/us/products/middleware/data-integration/enterprise-data-quality/overview/index.html   

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• Blank Cacti Graphs

  - by tortib

  I'm running Ubuntu 14.04 LTS and I'm having an issue with Cacti 0.8.8b not displaying any data in graphs. The graphs are being created and I see files in /var/lib/cacti/rra. My crontab entry for root is the following: */1 * * * * sudo -u www-data php -q /usr/share/cacti/site/poller.php > /dev/null The output of ls -la /var/lib/cacti/rra is the following: # ls -la /var/lib/cacti/rra/ total 1008 drwxrwx--- 2 www-data www-data 4096 Aug 20 19:27 . drwxr-xr-x 3 www-data www-data 4096 Aug 17 01:41 .. -rw-r--r-- 1 www-data www-data 47992 Aug 20 19:23 tortib_com_cpu_nice_34.rrd -rw-r--r-- 1 www-data www-data 47992 Aug 20 19:24 tortib_com_cpu_system_35.rrd -rw-rw-r-- 1 www-data www-data 47992 Aug 20 19:25 tortib_com_cpu_user_36.rrd -rw-r--r-- 1 www-data www-data 94816 Aug 20 19:27 tortib_com_hdd_used_43.rrd -rw-r--r-- 1 www-data www-data 94816 Aug 20 19:23 tortib_com_hdd_used_44.rrd -rw-r--r-- 1 www-data www-data 47992 Aug 20 19:27 tortib_com_load_15min_38.rrd -rw-r--r-- 1 www-data www-data 47992 Aug 20 19:26 tortib_com_load_1min_37.rrd -rw-r--r-- 1 www-data www-data 47992 Aug 20 19:23 tortib_com_load_5min_39.rrd -rw-r--r-- 1 www-data www-data 47992 Aug 20 19:24 tortib_com_mem_buffers_40.rrd -rw-rw-r-- 1 www-data www-data 47992 Aug 20 19:25 tortib_com_mem_cache_41.rrd -rw-r--r-- 1 www-data www-data 47992 Aug 20 19:26 tortib_com_mem_free_42.rrd -rw-r--r-- 1 www-data www-data 94816 Aug 20 19:24 tortib_com_traffic_in_45.rrd -rw-rw-r-- 1 www-data www-data 94816 Aug 20 19:25 tortib_com_traffic_in_46.rrd -rw-r--r-- 1 www-data www-data 94816 Aug 20 19:26 tortib_com_traffic_in_47.rrd -rw-r--r-- 1 www-data www-data 47992 Aug 20 19:27 tortib_com_users_48.rrd I tried to run the poller as root from the command line but it doesn't output anything useful nor does it graph any data. The device in cacti shows that that it's able to query snmp and ping is alive. The graphs are still empty though. snmpwalk 127.0.0.1 -v2c -c public works as it should. It walks all MIBs. I'm quite perplexed as to why this isn't working any longer. It was graphing data but then it just stopped. And when it was graphing data it was graphing it intermittently. Thank you for reading this problem and helping.

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