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• Combine static files or load in parallel

  - by Niall Collins

  I am at present introducing code to my site to combine css and javascript files. Is there a way without having to include an external library to load javascript asynchronously or in parallel? I have read on some blogs that combining of files can be counter productive as the load of the http request can be large and its better to load multiple files in parallel. Opinions on this? I am caching my javascript/css. And would have thought it was better to combine rather than have multiple http requests.

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• Best practices for using memcached in Rails?

  - by Matt

  Hello everybody, as database transcations in our app are getting more and more time consuming, we have started to use memcached to reduce the amount of queries passed to MySQL. All in all, it works fine and really saves a lot of time. But as caching was "silently appearing" as a workaround to give the app more juice, a lot of our models now contain code like this: def self.all_cached Rails.cache.fetch('object_name') { find( :all, :include => [associations]) } end This is getting more and more a pain as filling and flushing the cache happens in several classes accross the application. Now, I was wondering if there was a better way to abstract memcached logic to make it more powerful and easy to use across all needed models? I was thinking about having some kind of memcached-module which is included in all needed modules. But before playing around, I thought: Let's ask experts first :-) Thanks Matt

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• Vlans and subinterfaces

  - by Adeodatus

  I've inherited a moderate size network that I'm trying to bring some sanity to. Basically, its 8 public class Cs and a slew of private ranges all on one vlan (vlan1, of course). Most of the network is located throughout dark sites. I need to start separating some of the network. I've changed the ports from the main cisco switch (3560) to the cisco router (3825) and the other remote switches to trunking with dot1q encapsulation. I'd like to start moving a few select subnets to different vlans. To get some of the different services provided on our address space (and to separate customers) on to different vlans, do I need to create a subinterface on the router for each vlan and, if so, how do I get the switch port to work on a specific vlan? Keep in mind, these are dark sites and geting console access is difficult if not impossible at the moment. I was planning on creating a subinterface on the router for each vlan then setting the ports with services I want to move to a different vlan to allow only that vlan. Example of vlan3: 3825: interface GigabitEthernet0/1.3 description Vlan-3 encapsulation dot1Q 3 ip address 192.168.0.81 255.255.255.240 the connection between the switch and router: interface GigabitEthernet0/48 description Core-router switchport trunk encapsulation dot1q switchport mode trunk show interfaces gi0/48 switchport Name: Gi0/48 Switchport: Enabled Administrative Mode: trunk Operational Mode: trunk Administrative Trunking Encapsulation: dot1q Operational Trunking Encapsulation: dot1q Negotiation of Trunking: On Access Mode VLAN: 1 (default) Trunking Native Mode VLAN: 1 (default) Administrative Native VLAN tagging: enabled Voice VLAN: none Administrative private-vlan host-association: none Administrative private-vlan mapping: none Administrative private-vlan trunk native VLAN: none Administrative private-vlan trunk Native VLAN tagging: enabled Administrative private-vlan trunk encapsulation: dot1q Administrative private-vlan trunk normal VLANs: none Administrative private-vlan trunk private VLANs: none Operational private-vlan: none Trunking VLANs Enabled: ALL Pruning VLANs Enabled: 2-1001 Capture Mode Disabled Capture VLANs Allowed: ALL Protected: false Unknown unicast blocked: disabled Unknown multicast blocked: disabled Appliance trust: none So, if the boxen hanging off of gi0/18 on the 3560 are on an unmanaged layer2 switch and all within the 192.168.0.82-95 range and are using 192.168.0.81 as their gateway, what is left to do, especially to gi0/18, to get this working on vlan3? Are there any recommendations for a better setup without taking everything offline?

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• set current user in asp.net mvc

  - by Tomh

  Hey guys, I'm not sure if this is the best way to do it, but I want to keep a user object alive during all requests of the current user. From reading several resources I learned that you should create your own IPrinciple which holds this. But I don't want to trigger the database every authentication request. Any recommendations on how to handle this? Is caching the db request a good idea? protected void Application_AuthenticateRequest(Object sender, EventArgs e) { HttpCookie authCookie = Request.Cookies[FormsAuthentication.FormsCookieName]; if (authCookie != null) { FormsAuthenticationTicket authTicket = FormsAuthentication.Decrypt(authCookie.Value); User user; using (HgDataContext hg = new HgDataContext()) { if (Session["user"] != null) { user = (from u in hg.Users where u.EmailAddress == authTicket.Name select u).Single(); } else { user = Session["user"] as User; } } var principal = new HgPrincipal(user); Context.User = principal; } }

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• How can I make Internet Explorer 6 render Web pages like Internet Explorer 11?

  - by gparyani

  Now, I know that this may seem like a bad question in that I can just upgrade to Internet Explorer 8, but I am sticking with IE6 in that IE8 removes valuable features, like the ability to save favorites offline and the fact that a file path turns into a Windows Explorer window and typing a Web address into Windows Explorer changes it into an IE window. I know that Internet Explorer 6 does a really bad job at rendering some pages. I know of the Google Chrome Frame extension that brings Chrome-style rendering into IE, but that will soon be discontinued. So, I tried another thing: I know that C:\Windows\System32\mshtml.dll contains the Trident rendering engine that is used by IE, so I tried something: I first backed up the original file by renaming it on Windows XP to mshtml-old.dll, then I tried to copy in the DLL from a computer running Windows 7 with Internet Explorer 10. I noticed that, after copying, the system had replaced the new DLL with the old one, but left the one I backed up intact. Is there any way I can get the system to not replace the DLL like that so that I can transfer in IE11's mshtml.dll into Windows XP and make IE6 render like IE11? I'm looking for an answer that describes how to tweak my system to make IE6 render like IE11 (or IE10), not one that tells me to upgrade IE or install another browser. I don't care how tedious the method is, just as long as it works.

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• Virus cleanup + dying drive = XP Automatic Updates crashing in esent.dll

  - by quack quixote

  Background I'm doing system recovery on an old WinXP SP1 system brought to me on suspicion of virus infection. After taking preliminary backups, I used MalwareBytes to detect and clean the infection. I might've even gotten it all. In the process, I've discovered (a) the system drive is showing signs of impending failure, and (b) the owner has been using the system's old crusty IE-6 instead of the up-to-date Firefox I've provided for him. So naturally, thinking I had a relatively stable system, I tried to hit the Windows Update site to install IE-8, in case further training doesn't stick. The update site told me it needed to update the installer, and I started that process. Soon after, wuauclt.exe started crashing, reporting addresses in module esent.dll. There's a Microsoft KB (910437) on a problem with that DLL, so I downloaded the hotfix and installed. The crashing did not stop. I attempted to install SP3 from the offline installer, but that didn't fix the issue either. The system is reporting a few hard drive / IDE controller errors, but they don't correlate to the crashes, so they aren't the direct cause. I've also attempted to rollback to the time between the infection removal and the first crashes, but that doesn't help. Question The hotfix I tried to install dealt with problem in transaction logs of the Extensible Storage Engine (ESE) database. I suspect this issue is similar, but that the database itself (whatever the ESE database is) is corrupted. Is there a way to clean or clear this database so that system operation returns to normal? Can someone enlighten me as to what the ESE database actually is, and where it resides? Can I just locate some files and delete them to bring this under control?

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• Cloned Cached item has memory issues

  - by ioWint

  Hi there, we are having values stored in Cache-Enterprise library Caching Block. The accessors of the cached item, which is a List, modify the values. We didnt want the Cached Items to get affected. Hence first we returned a new List(IEnumerator of the CachedItem) This made sure accessors adding and removing items had little effect on the original Cached item. But we found, all the instances of the List we returned to accessors were ALIVE! Object relational Graph showed a relationship between this list and the EnterpriseLibrary.CacheItem. So we changed the return to be a newly cloned List. For this we used a LINQ say (from item in Data select new DataClass(item) ).ToList() even when you do as above, the ORG shows there is a relationship between this list and the CacheItem. Cant we do anything to create a CLONE of the List item which is present in the Enterprise library cache, which DOESNT have ANY relationship with CACHE?!

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• Cannot Update Adobe Creative Suit

  - by Lynda

  I am attempting to check for updates using the Adobe Application Manager on Windows 8 and I get this error: The update server is not responding. The server might be offline temporarily, or the Internet or firewall settings may be incorrect. I have seen this error before on Windows 7 and remembered that I needed to disable the Microsoft Virtual WiFi Miniport Adapter. I navigated to the correct place but the Miniport Adapter was not there. After a bit of searching across several forums I saw a recommendation to change <logLevel>2</logLevel> to <logLevel>10</logLevel>. I attempted that and again it still did not work. I have also tried disabling my anti-virus protection and disabling Windows Firewall. Neither worked. I am not sure what else to try or do at this point. Are there any other recommendations to solve this issue? Notes: I am running Windows 8 Pro using the Creative Cloud Version of CS6. I check for updates by choosing Help Updates from within any Adobe Application I originally posted this question on the Adobe Forums and received no help there.

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• Why can't I update Adobe Creative Suite?

  - by Lynda

  I am attempting to check for updates using the Adobe Application Manager on Windows 8 and I get this error: The update server is not responding. The server might be offline temporarily, or the Internet or firewall settings may be incorrect. I have seen this error before on Windows 7 and remembered that I needed to disable the Microsoft Virtual WiFi Miniport Adapter. I navigated to the correct place but the Miniport Adapter was not there. After a bit of searching across several forums I saw a recommendation to change <logLevel>2</logLevel> to <logLevel>10</logLevel>. I attempted that and again it still did not work. I have also tried disabling my anti-virus protection and disabling Windows Firewall. Neither worked. I am not sure what else to try or do at this point. Are there any other recommendations to solve this issue? Notes: I am running Windows 8 Pro using the Creative Cloud Version of CS6. I check for updates by choosing Help Updates from within any Adobe Application This issue was not present in Windows 7 before I upgraded to Windows 8 I originally posted this question on the Adobe Forums and received no help there.

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• Would an invalid certificate cause an 0x8004010F sync error?

  - by hydroparadise

  We just migrated from Exchange 2003 to 2007 which was a combo primary AD/DNS server and it has not gone smoothly. We are now down to getting a new certificate (a bureaucratic process thats out of my hands) and users getting the 0x8004010F sync issue. We are only using Outlook 2007 as our email client and the sync error appears exactly as so: 9:21:44 Synchronizer Version 12.0.6562 9:21:44 Synchronizing Mailbox '<User>' 9:21:44 Done 9:21:44 Microsoft Exchange offline address book 9:21:44 0X8004010F Now, I have read a number of technet articles on this issue anywhere from adding an A record in the DNS for autodiscover.domain.com to syncing the old OAD to the new OAD. In otherwords, theres lots of thing to try, but trial and error at this point might be hazardous to ther server's health and I am trying to narrow down the list of things to try. What has me thinking that the sync error could be related to the certificate is an event error message that says the following: Microsoft Exchange could not find a certificate that contains the domain name mail.ccufl.org in the personal store on the local computer. Therefore, it is unable to support the STARTTLS SMTP verb for the connector Internet Mail with a FQDN parameter of mail.ccufl.org. If the connector's FQDN is not specified, the computer's FQDN is used. Verify the connector configuration and the installed certificates to make sure that there is a certificate with a domain name for that FQDN. If this certificate exists, run Enable-ExchangeCertificate -Services SMTP to make sure that the Microsoft Exchange Transport service has access to the certificate key. I am not fully clear on how the Exchange Transport Service is related to Syncronization, but my hunch is that it probably not related to there not being a valid certificate. So to recap, would an invalid certificate cause an 0x8004010F sync error?

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• SQL Server 2008 Bring Database Online trying to open a file from a drive that doesn't exist

  - by Nai

  This is my error I am facing TITLE: Microsoft.SqlServer.Smo Set offline failed for Database 'Go3D_Retailer ------------------------------ ADDITIONAL INFORMATION: An exception occurred while executing a Transact-SQL statement or batch. (Microsoft.SqlServer.ConnectionInfo) Unable to open the physical file "E:\Program Files\Microsoft SQL Server\MSSQL10.MSSQLSERVER\MSSQL\DATA\ftrow_Go3D_catalog.ndf". Operating system error 2: "2(failed to retrieve text for this error. Reason: 15105)". Database 'Go3D_Retailer' cannot be opened due to inaccessible files or insufficient memory or disk space. See the SQL Server errorlog for details. ALTER DATABASE statement failed. (Microsoft SQL Server, Error: 5120) Background to this error I've been trying to move my destination logshipping database to another physical server for analysis purposes. Because I do not have domain keys and active directory set up, I had to hack my process by using the same username/password for both the source and destination servers to get the process to work. Following that, I used this guy's solution to move the destination database to another server. However, this error occurs when I try to bring the database back online. I don't have an E drive on my server and I have no idea why it's trying to open a file from E drive. I have over a 100gb left on my hard disk so it's definitely not a space issue. This sounds like a bug... Any ideas?

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• WEP/WPA/WPA2 and wifi sniffing

  - by jcea

  Hi, I know that WEP traffic can be "sniffed" by any user of the WIFI. I know that WPA/WPA2 traffic is encrypted using a different link key for each user, so they can't sniff traffic... unless they capture the initial handshake. If you are using a PSK (preshared key) schema, then you recover the link key trivially from this initial handshake. If you don't know the PSK, you can capture the handshake and try to crack the PSK by bruteforce offline. Is my understanding correct so far?. I know that WPA2 has AES mode and can use "secure" tokens like X.509 certificates and such, and it is said to be secure against sniffing because capturing the handshake doesn't help you. So, is WPA2+AES secure (so far) against sniffing, and how it actually works?. That is, how is the (random) link key negociated?. When using X.509 certificates or a (private and personal) passphrase. Do WPA/WPA2 have other sniffer-secure modes beside WPA2+AES? How is broadcast traffic managed to be received by all the WIFI users, if each has a different link key?. Thanks in advance! :).

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• Is there a production ready web application framework in Python?

  - by peperg

  I heard lots of good opinions about Python language. They say it's mature, expressive etc... Are there any production-ready web application frameworks in Python. By "production ready" I mean : supports objective-relational mapping with caching and declarative desciption (like JPA, Hibernate etc..) controls oriented user interface support - no HTML templates but something like JSF (RichFaces, Icefaces) or GWT, Vaadin, ZK component decomposition and dependency injection (like EJB or Spring) unit and integration testing good IDE support clustering, modularity etc (like Terracota, OSGi etc..) there are successful applications written in it by companies like IBM, Oracle etc (I mean real business applications not Twitter) could have commercial support Is it possible at all in Python world ? Or only choices are : use Python and write everything from the bottom (too expensice) stick to JEE buy .NET stack

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• plist vs static array

  - by morticae

  Generally, I use static arrays and dictionaries for containing lookup tables in my classes. However, with the number of classes creeping quickly into the hundreds, I'm hesitant to continue using this pattern. Even if these static collections are initialized lazily, I've essentially got a bounded memory leak going on as someone uses my app. Most of these are arrays of strings so I can convert strings into NSInteger constants that can be used with switch statements, etc. I could just recreate the array/dictionary on every call, but many of these functions are used heavily and/or in tight loops. So I'm trying to come up with a pattern that is both performant and not persistent. If I store the information in a plist, does the iphoneOS do anything intelligent about caching those when loaded? Do you have another method that might be related?

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• What exactly happens when I call a web service method using PHP::SOAP?

  - by Bedwyr Humphreys

  Say I have a simple client/server scenario with one method: // client code $client = new SoapCLient("service.wsdl"); $result = $client.getPi(); ... // server code function getPi(){ return 3.141; } $server = new SoapServer("service.wsdl"); $server.addFunction("getPi"); $server.handle(); Am I right in thinking that when the client makes a call to the getPi() method the addfunction() gets called everytime? Is this really how PHP SOAP web services work? Or is there some caching going on? Thanks.

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• Recommendation on remote access setup for accessing customer systems

  - by gregmac

  I'm looking for a product recommendation (open or commercial) that will allow remote access to customer sites for tech support purposes. We need to be able to gain access to help troubleshoot problems on servers. Currently end up using anything from RDP on public IP, to various VPNs that clients happen to have, to webex-type sessions that require lots of interaction from both sides to get things working. This often means a problem that could take 10 minutes to solve takes an extra 30+ minutes messing around trying to get a connection up. There are multiple customer sites, which should NOT have access to each other. At each site, there is anywhere from 1 to 8 servers (Windows 2003 or 2008) that need to be accessed. Support connection to machines even if they're behind a firewall/router with no public IP Be able to selectively allow/deny access from customer site. Customer site should not be able to connect outbound to anywhere else (our systems, or other customer sites) Support multiple users from our end If not a VPN connection (where RDP could be used over top), should support: Remote desktop access, including copy/paste File transfers Preferably would have some way to list all remote systems, showing online/offline. Anyone have any suggestions?

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• Folder redirection GPO doesn't seem to be working

  - by homli322

  I've been trying to set up roaming profiles and folder redirection, but have hit a bit of a snag with the latter. This is exactly what I've done so far: (I have OU permissions and GPO permissions over my division's OU.) Created a group called Roaming-Users in the OU 'Groups' Added a single user (testuser) to the group Using the Group Policy Management tool (via RSAT on Windows 7) I right-clicked on the Groups OU and selected 'Create a GPO in this domain, and Link it here' Added my 'Roaming-Users' group to the Security Filtering section of the policy. Added the Folder Redirection option, specifically for Documents. It is set to redirect to: \myserver\Homes$\%USERNAME%\Documents (Homes$ exists and is sharing-enabled). Right-clicked on the policy under the Groups OU and checked Enforced. Logged into a machine as testuser successfully. Created a simple text file, saved some gibberish, logged off. Remoted into the server with Homes$ on it, noticed that the directory Homes$\testuser was created, but was empty. No text file to be found. From what I've read, I did everything I aught to...but I can't quite figure out the issue. I had no errors when I logged off about syncing issues (offline files is enabled) or anything, so I can only imagine my file should have ended up up on the share. Any ideas? EDIT: Using gpresult /R, I confirmed the user is in fact part of the Roaming-Users group, but does not have the policy applied, if that helps. EDIT 2: Apparently you can't apply GPOs to groups...so I applied to users and used the same security filter to limit it to my test user. Nothing happens as far as redirection goes, but I now have the following error in the event log: Folder redirection policy application has been delayed until the next logon because the group policy logon optimization is in effect

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• Unable to Connect to just Google Servers

  - by Akshat Mittal

  I am in an extremely strange problem. I am unable to connect to just Google Servers. I am not able to access any site related to Google, Google.com | YouTube | Google+ | Webmaster Tools | jQuery CDN, nothing is working. I am able to open any other website (as I am posting this question on SuperUser), even the Google DNS (8.8.8.8 and 8.8.4.4) are offline. Please Help!! Update 1: Google DNS are back online, YouTube is back online. But website on domain google.com is not working (ex: play.google.com, maps.google.com, google.com/search, etc). Update 2: I am able to access Google.com (only) with (one of) its IP addresss(s) listed below: 74.125.227.41 74.125.227.46 74.125.227.32 74.125.227.33 74.125.227.34 74.125.227.35 74.125.227.36 74.125.227.37 74.125.227.38 74.125.227.39 74.125.227.40 Update 3: I consulted my friends nearby and they said that they are also experiencing the same problem. Seams like this is a major problem in this area (or India !!) The Problem is Now Solved!! I am able to open Google.com

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• Actionscript 3 : XML cached in local testing

  - by Boun

  Hi, My question is about XML loading. I need to avoid xml caching. On a web server, the technique is adding a random param to reload each time the XML file. But on local testing (in Flash CS4 IDE, CTRL + Enter), the following lines are not possible : var my_date : Date; path = "toto.xml?time="+my_date.getSeconds()+my_date.getMilliseconds(); Is there any trick to bypass this issue ? I've read on different forum about the "delete" method, we delete the xml object and then recreate one new. In my case, I put : myXML = null; myXML = new XML ( loadedData ); But it doesn't work at all. I spent many hours on that problem, if anyone has a good solution... Thank you.

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• Is there a free PDF printer / distiller that creates signable documents?

  - by Coderer

  I've used various methods (mentioned elsewhere on this site) to create PDFs, using a printer driver or converting from PostScript, etc. The common problem is that if I open any of the output files in the newer versions of Adobe Reader, there's an option to "Place Signature" but it's greyed out, or gives an error message that the feature has been disabled for this document. As far as I can tell, there's an option set somewhere in the document metadata that tells Reader "allow the user to sign this document", or don't. None of the free/open source tools that have been been linked to in other SU posts have had this listed as an option (though to be fair I haven't actually downloaded and tried all of them). Is there a tool that does this? Can I just poke a bit with a hex editor somewhere to turn on this functionality? I can sometimes get access to Acrobat Professional to turn on this option, but doing it for every desired case would be more work than I care to do. The current workaround for single-page documents is: Print the document to PDF (possibly via postscript) Open a single-page blank PDF with the "signable" bit turned on in Reader create a custom "stamp" using the Reader markup tools, by importing the printed-to document "stamp" an image of the printed document on the blank page, hoping to get it centered about right place a signature over the document-but-not-really you just stamped This obviously does not scale well at all. It would be much better if I could: Print the document to PDF Drag the document to a simple shortcut / tool / whatever Open the document in Reader Place a signature in the document ETA: Sorry, maybe I should have been clearer -- I'm talking about the certificate-based digital signing available in Adobe Reader, not adding a virtual ink signature. Also, any solution really would have to be available offline.

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• Setting up a web developer lab for learning purposes

  - by Saleh Al-Abbas

  I'm not a developer by profession. Therefore, I'm not exposed to real world technical problems that face professional developers. I read/heard about web farms, integration between different systems, load balancing ... etc. Therefore, I was wondering if there are ways for the individual developer to create an environment that simulates real world situations with minimal number of machines like: web farms & caching simulating many users accessing your website (Pressure tests?) Performance load balancing anything you think I should consider. By the way, I have a server machine and 1 PC. and I don't mind investing in tools and software. PS. I'm using Microsoft technologies for development but I hope this is not a limiting factor. Thanks

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• Should a given URI in a RESTful architecture always return the same response?

  - by keithjgrant

  This is kind of a follow-up question to this one. So is having a unique response for any given URI a core tenant of RESTful architecture? A lot of discussion here tends that direction, but I haven't seen it anywhere as a "hard and fast" rule. I understand the value of it (for caching, crawling, passing links, etc), but I also see things like the twitter API violate it (A request to http://api.twitter.com/1/statuses/friends_timeline.xml will vary based on the username given), and I understand there are times when it may be necessary--not to mention that a chronologically paged resource will also change as new elements are added. Should I strive for varied responses from the same URI to be eliminated altogether, or do I just accept that sometimes it isn't practical, and as long as I minimize its occurrence, I'll be in decent shape.

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• How to resolve virtual disk degraded in Windows Server 2012

  - by harrydev

  I am using the new Storage Spaces feature in Windows Server 2012. I have the following disks: FriendlyName CanPool OperationalStatus HealthStatus Usage Size ------------ ------- ----------------- ------------ ----- ---- PhysicalDisk2 False OK Healthy Auto-Select 2.73 TB PhysicalDisk3 False OK Healthy Auto-Select 2.73 TB PhysicalDisk4 False OK Healthy Auto-Select 2.73 TB PhysicalDisk5 False OK Healthy Auto-Select 2.73 TB There is also a separate OS disk. The above disks are part of a single storage pool: FriendlyName OperationalStatus HealthStatus IsPrimordial IsReadOnly ------------ ----------------- ------------ ------------ ---------- Pool OK Healthy False False Within this storage pool some virtual disks are defined, see below: FriendlyName ResiliencySettingNa OperationalStatus HealthStatus IsManualAttach Size me ------------ ------------------- ----------------- ------------ -------------- ---- Docs Mirror OK Healthy False 500 GB Data Mirror Degraded Warning False 500 GB Work Mirror Degraded Warning False 2 TB Now the virtual disks are all running normal 2-way mirror, but two of the virtual disks are degraded. This is probably because one of the physical disks was offline for a short period of time. However, now the virtual disk cannot be repaired, even though, all physical disks are healthy. There is plenty of available space in the storage pool. This I cannot understand so I was hoping for some help, on how to resolve this? Below I have listed the full output from the Get-VirtualDisk CmdLet for the "Work" disk: ObjectId : {XXXXXXXX} PassThroughClass : PassThroughIds : PassThroughNamespace : PassThroughServer : UniqueId : XXXXXXXX Access : Read/Write AllocatedSize : 412316860416 DetachedReason : None FootprintOnPool : 824633720832 FriendlyName : Work HealthStatus : Warning Interleave : 262144 IsDeduplicationEnabled : False IsEnclosureAware : False IsManualAttach : False IsSnapshot : False LogicalSectorSize : 512 Name : NameFormat : NumberOfAvailableCopies : 0 NumberOfColumns : 2 NumberOfDataCopies : 2 OperationalStatus : Degraded OtherOperationalStatusDescription : OtherUsageDescription : Disk for data being worked on (not backed up) ParityLayout : PhysicalDiskRedundancy : 1 PhysicalSectorSize : 4096 ProvisioningType : Thin RequestNoSinglePointOfFailure : True ResiliencySettingName : Mirror Size : 2199023255552 UniqueIdFormat : Vendor Specific UniqueIdFormatDescription : Usage : Other PSComputerName :

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• How to export SQL Server data from corrupted database (with disk write error)

  - by damitamit

  IT realised there was a disk write error on our production SQL Server 2005 and hence was causing the backups to fail. By the time they had realised this the nightly backup was old, so were not able to just restore the backup on another server. The database is still running and being used constantly. However DBCC CheckDB fails. Also the SQL Server backup task fails, Copy Database fails, Export Data Wizard fails. However it seems all the data can be read from the tables (i.e using bcp etc) Another observation I have made is that the Transaction Log is nearly double the size of the Database. (Does that mean all the changes arent being written to the MDF?) What would be the best plan of attack to get the database to a state where backups are working and the data is safe? Take the database offline and use the MDF/LDF to somehow create the database on another sql server? Export the data from the database using bcp. Create the database (use the Generate Scripts function on the corrupt db to create the schema on the new db) on another sql server and use bcp again to import the data. Some other option that is the right course of action in this situation? The IT manager says the data is safe as if the server fails, the data can be restored from the mdf/ldf. I'm not sure so insisted that we start exporting the data each night as a failsafe (using bcp for example). IT are also having issues on the hardware side of things as supposedly the disk error in on a virtualized disk and can't be rebuilt like a normal raid array (or something like that). Please excuse my use of incorrect terminology and incorrect assumptions on how Sql Server operates. I'm the application developer and have been called to help (as it seems IT know less about SQL Server than I do). Many Thanks, Amit

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• Grails / GORM, Disable First-level Cache

  - by Stephen Swensen

  Suppose I have the following Domain class mapping to a legacy table, utilizing read-only second-level cache, and having a transient field: class DomainObject { static def transients = ['userId'] Long id Long userId static mapping = { cache usage: 'read-only' table 'SOME_TABLE' } } I have a problem, references to DomainObject are being shared due to first-level caching, and thus transient fields are writing over each other. For example, def r1 = DomainObject.get(1) r1.userId = 22 def r2 = DomainObject.get(1) r2.userId = 34 assert r1.userId == 34 That is, r1 and r2 are references to the same instance. This is undesirable, I would like to cache the table data without sharing references. Any ideas? [Edit] Understanding the situation better now, I believe my question boils down to the following: Is there anyway to disable first level cache for a specific domain class while still using second level cache?

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