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  • LINQ TO SQL error: An attempt has been made to Attach or Add an entity that is not new...

    - by Collin Estes
    "An attempt has been made to Attach or Add an entity that is not new, perhaps having been loaded from another DataContext. This is not supported." I have scene a lot of solutions dealing with the Attach() method but I'm just trying to add in a new record. Not sure what is going on. Here is my code, It is failing on the star'd line.: try { LINQDataContext datacontext = new LINQDataContext(); TrackableItem ti = datacontext.TrackableItems.FirstOrDefault(_t => _t.pkId == obj.fkTrackableItemId); arcTrackableItem ati = new arcTrackableItem(); ati.barcode = ti.barcode; ati.dashNumber = ti.dashNumber; ati.dateDown = ti.dateDown; ati.dateUp = ti.dateUp; ati.fkItemStatusId = ti.fkItemStatusId; ati.fkItemTypeId = ti.fkItemTypeId; ati.partNumber = ti.partNumber; ati.serialNumber = ti.serialNumber; ati.archiveDate = DateTime.Now; datacontext.arcTrackableItems.InsertOnSubmit(ati); datacontext.SubmitChanges(); arcPWR aItem = new arcPWR(); aItem.comments = obj.comments; aItem.fkTrackableItemId = ati.pkId; aItem.fkPWRStatusId = obj.fkPWRStatusId; aItem.PwrStatus = obj.PwrStatus; **datacontext.arcPWRs.InsertOnSubmit(aItem);** datacontext.SubmitChanges();

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  • Why is using a common-lookup table to restrict the status of entity wrong?

    - by FreshCode
    According to Five Simple Database Design Errors You Should Avoid by Anith Sen, using a common-lookup table to store the possible statuses for an entity is a common mistake. Why is this wrong? I disagree that it's wrong, citing the example of jobs at a repair service with many possible statuses that generally have a natural flow, eg.: Booked In Assigned to Technician Diagnosing problem Waiting for Client Confirmation Repaired & Ready for Pickup Repaired & Couriered Irreparable & Ready for Pickup Quote Rejected Arguably, some of these statuses can be normalised to tables like Couriered Items, Completed Jobs and Quotes (with Pending/Accepted/Rejected statuses), but that feels like unnecessary schema complication. Another common example would be order statuses that restrict the status of an order, eg: Pending Completed Shipped Cancelled Refunded The status titles and descriptions are in one place for editing and are easy to scaffold as a drop-down with a foreign key for dynamic data applications. This has worked well for me in the past. If the business rules dictate the creation of a new order status, I can just add it to OrderStatus table, without rebuilding my code.

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  • Why won't JPA delete owned entities when the owner entity loses the reference to them?

    - by Nick
    Hi! I've got a JPA entity "Request", that owns a List of Answers (also JPA entities). Here's how it's defined in Request.java: @OneToMany(cascade= CascadeType.ALL, mappedBy="request") private List<Answer> answerList; And in Answer.java: @JoinColumn(name = "request", referencedColumnName="id") @ManyToOne(optional = false) private Request request; In the course of program execution, the Request's List of Answers may have Answers added or removed from it, or the actual List object may be replaced. My problem is thus: when I merge a Request to the database, the Answer objects that used to be in the List are kept in the database -- that is, Answer objects that the Request no longer holds a reference to (indirectly, via a List) are not deleted. This is not the behaviour I desire, as if I merge a Request to the database, and then fetch it again, its Answers List may not be the same. Am I making some programming mistake? Is there an annotaion or setting that will ensure that the Answers in the database are exactly the Answers in the Request's List? A solution is to keep references to the original Answers List and then use the EntityManager to remove each old Answer before merging the Request, but it seems like there should be a cleaner way. Thank you!

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  • Dell Management Packs in System Center Operations Manager 2007 R2?

    - by bwerks
    Hey all, I recently set up SCOM in a small business network environment. The root management server is a Dell Poweredge 2950, and I'd like to use SCOM to monitor it using Dell's management packs. I've imported the management packs into the SCOM deployment and followed Dell's installation instructions, but it doesn't seem to be fully working yet. Currently, the Diagram views in the Dell tree (Monitoring tab) seem to show me the server's place in the network topology, so it seems that at least part of it is working. However, none of the reports under "Performance and Power Monitoring Views" provide any information. When clicking on one of them (Power Consumption (Watts), for instance), the display area is blank and there is a tooltip visible that reads "No performance counter is selected. To select a counter, place a check mark in the Show column in legend below." However, in the legend, there's nothing there for me to check. I've installed OpenManage 6.2 on the server as per the Dell documentation, but I don't know what else I could have done that I missed. Does this sound like a familiar problem to anyone?

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  • Is there an effective tab manager for Google Chrome?

    - by Mahn
    I've tried a few extensions but I wasn't very satisfied, I'm basically looking for an extension that allows me to group sets of tabs in such a way that I'm able to quickly switch between the groups within the same window. That is to say, if I had 5 Wikipedia tabs and 5 Stack Exchange tabs, ideally I would create 2 groups, hide the tabs of one of them, and switch between the Wikipedia and Stack Exchange tabs back and forth as I need without leaving the same window (note that I'm not specifically looking for grouping by site, that was just a simplified example) Does an extension like this exist? PS: No, I don't actually have 5 Wikipedia tabs open while browsing Stack Exchange sites :-)

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  • What are the side-effects of disabling the old Lan Manager hash?

    - by Bigbio2002
    All of the computers in our domain are running Windows XP/Server 2003 and above (with one exception, a Win2Ksp4 server, which is not a domain controller). I intend to disable the LM hashes via group policy as indicated in KB299656, and want to ensure that there won't be any unforseen problems or side-effects. Does anyone have experience with performing this change? Are there any caveats that I should keep in mind?

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  • How should one manager external and internal DNS servers at the same time?

    - by erotsppa
    We run a mac network here in the office. We have an internal DNS server to manage the network. Everything is resolved to a local ip (for mail.mydomain.com etc). However, we also have an external DNS server for when our users are not in the office. However, isn't it a pain to have to manage two lists? Whenever you change something you have to change another? And you can't have one be a slave of another because the ip are sometimes different (for example mail.mydomain.com would point to a local ip in local dns server but an external ip in the external dns server). Any tricks?

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  • What exactly is the difference between update-manager -d and normal apt-get?

    - by jldugger
    The official recommendation of Ubuntu is to use sudo do-release-upgrade to do an online upgrade from one version to the next. Historically many of my Debianite friends and myself have simply altered apt's sources.list and run apt-get dist-upgrade. I follow Ubuntu's recommendations, but I've always wondered what the magic difference between these two processes is. What, exactly, does do-release-upgrade do, on say an upgrade from 9.04 to 9.10? (Examples from other releases welcome.)

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  • Ditto (clipboard manager): can't set shortcut of Win+<num>. Get “Error Registering Position 1”

    - by Jeff Kang
    Somone made a Youtube video on Ditto, and that person uses Win+Num to paste items from the list. He put a screenshot of his settings on Google Plus: When I try to do the same, which is to put “1” in the text field of Position 1, and check the “Win” box to add the Windows key as the sole modifier for the shortcut, which will be Win + 1, I get an error in that says “Error Registering Position 1” in a window titled CP_Main: Could it be because Win+Num conflicts with the natural Win+Num shortcut (starts the application pinned to the taskbar in that position, or switches to that program) of Windows 7? Thanks.

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  • Formatting not retained in paste from Ditto (clipboard manager). Plain text pasted instead [Solved] Add supported types

    - by Jeff Kang
    I'm trying to use Ditto on the Ditto documentation. If I were to copy the table of contents, then paste it (without Ditto) to the word processor, I get http://i.imgur.com/V1GU3.png, and the formatting is maintained. As as a result of the copy operation, the table of contents also goes into the Saved Items List (= History List = Lists the Clips saved from the Clipboard) in Ditto’s Main Window: I open a blank document to paste from Ditto instead of the default clipboard, and press either Ctrl-`, the default Ditto window activation Global Hot Key, or click the tray icon. From this point, I can do 3 things to close the Ditto window, and place the item on the clipboard (the default clipboard?). Select the item, and press Enter Put the cursor on the item, and double-click Select the item, and press Ctrl-c 1) and 2) send a right-click where the cursor is, after the Ditto window closes (presumably to have the paste option ready to access?): Ctrl-c just closes the Ditto window. Whichever method is used, the contents are pasted in what I believe is plain text: http://i.imgur.com/mQAZH.png How do I keep the formatting that the default clipboard keeps? Thanks.

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  • Is there an simple but good To Do Manager app for the Mac?

    - by Another Registered User
    Every morning I think about what I am going to do today. So I take a paper and start to write things like: [ ] Call Mr. XYZ [ ] Answer Support E-Mails [ ] Reduce website header height by 20 px [ ] Create new navigation bar icons And every time I'm done with something, I paint a checkmark in this square. On paper. It would be fun to have something like this as an application. But I don't want a heavy project management tool or integration with email. It should be like download, install, use without fat configuration and steep learning curve. usually I don't schedule my to do's, I just write down every day what I want to accomplish today. For my experience it doesn't make sense to plan what to do next week, because next week everything looks totally different. Would be cool if such a simple utility exists. At the moment I try just using textEdit and deleting rows which are done. With a nice interface, this would be much more fun.

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  • package manager cannot create users? installation script fails?

    - by RapidWebs
    It seems that when trying to install any package which requires the creation of a system User and Group, the installer fails with the error: install: invalid user 'username' When it happened the first time, I assumed it was related to the package, or it's installation script. But now I am attempting a different package, and alas, the same issue arises! note: /etc/passwd and /etc/group is not chattr -i Here is the example output from an attempted installation (of varnish): Selecting previously unselected package varnish. Unpacking varnish (from .../varnish_3.0.2-1ubuntu0.1_amd64.deb) ... Processing triggers for man-db ... Setting up libvarnishapi1 (3.0.2-1ubuntu0.1) ... Setting up varnish (3.0.2-1ubuntu0.1) ... install: invalid user `varnish' dpkg: error processing varnish (--configure): subprocess installed post-installation script returned error exit status 1 Processing triggers for libc-bin ... ldconfig deferred processing now taking place Errors were encountered while processing: varnish note: running ubuntu 12.04 For now, I have resolved the issue by manually creating the users, and running apt-get install -f, but this does not resolve the actual issue. Any ideas?

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  • ODBC in SSIS 2012

    - by jamiet
    In August 2011 the SQL Server client team published a blog post entitled Microsoft is Aligning with ODBC for Native Relational Data Access in which they basically said "OLE DB is the past, ODBC is the future. Deal with it.". From that blog post:We encourage you to adopt ODBC in the development of your new and future versions of your application. You don’t need to change your existing applications using OLE DB, as they will continue to be supported on Denali throughout its lifecycle. While this gives you a large window of opportunity for changing your applications before the deprecation goes into effect, you may want to consider migrating those applications to ODBC as a part of your future roadmap.I recently undertook a project using SSIS2012 and heeded that advice by opting to use ODBC Connection Managers rather than OLE DB Connection Managers. Unfortunately my finding was that the ODBC Connection Manager is not yet ready for primetime use in SSIS 2012. The main issue I found was that you can't populate an Object variable with a recordset when using an Execute SQL Task connecting to an ODBC data source; any attempt to do so will result in an error:"Disconnected recordsets are not available from ODBC connections." I have filed a bug on Connect at ODBC Connection Manager does not have same funcitonality as OLE DB. For this reason I strongly recommend that you don't make the move to ODBC Connection Managers in SSIS just yet - best to wait for the next version of SSIS before doing that.I found another couple of issues with the ODBC Connection Manager that are worth keeping in mind:It doesn't recognise System Data Source Names (DSNs), only User DSNs (bug filed at ODBC System DSNs are not available in the ODBC Connection Manager)  UPDATE: According to a comment on that Connect item this may only be a problem on 64bit.In the OLE DB Connection Manager parameter ordinals are 0-based, in the ODBC Connection Manager they are 1-based (oh I just can't wait for the upgrade mess that ensues from this one!!!)You have been warned!@jamiet

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  • Downloading a file over HTTP the SSIS way

    This post shows you how to download files from a web site whilst really making the most of the SSIS objects that are available. There is no task to do this, so we have to use the Script Task and some simple VB.NET or C# (if you have SQL Server 2008) code. Very often I see suggestions about how to use the .NET class System.Net.WebClient and of course this works, you can code pretty much anything you like in .NET. Here I’d just like to raise the profile of an alternative. This approach uses the HTTP Connection Manager, one of the stock connection managers, so you can use configurations and property expressions in the same way you would for all other connections. Settings like the security details that you would want to make configurable already are, but if you take the .NET route you have to write quite a lot of code to manage those values via package variables. Using the connection manager we get all of that flexibility for free. The screenshot below illustrate some of the options we have. Using the HttpClientConnection class makes for much simpler code as well. I have demonstrated two methods, DownloadFile which just downloads a file to disk, and DownloadData which downloads the file and retains it in memory. In each case we show a message box to note the completion of the download. You can download a sample package below, but first the code: Imports System Imports System.IO Imports System.Text Imports System.Windows.Forms Imports Microsoft.SqlServer.Dts.Runtime Public Class ScriptMain Public Sub Main() ' Get the unmanaged connection object, from the connection manager called "HTTP Connection Manager" Dim nativeObject As Object = Dts.Connections("HTTP Connection Manager").AcquireConnection(Nothing) ' Create a new HTTP client connection Dim connection As New HttpClientConnection(nativeObject) ' Download the file #1 ' Save the file from the connection manager to the local path specified Dim filename As String = "C:\Temp\Sample.txt" connection.DownloadFile(filename, True) ' Confirm file is there If File.Exists(filename) Then MessageBox.Show(String.Format("File {0} has been downloaded.", filename)) End If ' Download the file #2 ' Read the text file straight into memory Dim buffer As Byte() = connection.DownloadData() Dim data As String = Encoding.ASCII.GetString(buffer) ' Display the file contents MessageBox.Show(data) Dts.TaskResult = Dts.Results.Success End Sub End Class Sample Package HTTPDownload.dtsx (74KB)

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  • Downloading a file over HTTP the SSIS way

    This post shows you how to download files from a web site whilst really making the most of the SSIS objects that are available. There is no task to do this, so we have to use the Script Task and some simple VB.NET or C# (if you have SQL Server 2008) code. Very often I see suggestions about how to use the .NET class System.Net.WebClient and of course this works, you can code pretty much anything you like in .NET. Here I’d just like to raise the profile of an alternative. This approach uses the HTTP Connection Manager, one of the stock connection managers, so you can use configurations and property expressions in the same way you would for all other connections. Settings like the security details that you would want to make configurable already are, but if you take the .NET route you have to write quite a lot of code to manage those values via package variables. Using the connection manager we get all of that flexibility for free. The screenshot below illustrate some of the options we have. Using the HttpClientConnection class makes for much simpler code as well. I have demonstrated two methods, DownloadFile which just downloads a file to disk, and DownloadData which downloads the file and retains it in memory. In each case we show a message box to note the completion of the download. You can download a sample package below, but first the code: Imports System Imports System.IO Imports System.Text Imports System.Windows.Forms Imports Microsoft.SqlServer.Dts.Runtime Public Class ScriptMain Public Sub Main() ' Get the unmanaged connection object, from the connection manager called "HTTP Connection Manager" Dim nativeObject As Object = Dts.Connections("HTTP Connection Manager").AcquireConnection(Nothing) ' Create a new HTTP client connection Dim connection As New HttpClientConnection(nativeObject) ' Download the file #1 ' Save the file from the connection manager to the local path specified Dim filename As String = "C:\Temp\Sample.txt" connection.DownloadFile(filename, True) ' Confirm file is there If File.Exists(filename) Then MessageBox.Show(String.Format("File {0} has been downloaded.", filename)) End If ' Download the file #2 ' Read the text file straight into memory Dim buffer As Byte() = connection.DownloadData() Dim data As String = Encoding.ASCII.GetString(buffer) ' Display the file contents MessageBox.Show(data) Dts.TaskResult = Dts.Results.Success End Sub End Class Sample Package HTTPDownload.dtsx (74KB)

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  • Troubleshooting EBS Discovery Issues - Part 2

    - by Kenneth E.
    Part 1 of “Troubleshooting EBS Discovery Issues”, which was posted on May 17th, focused on the diagnostics associated with the initial discovery of an EBS instances (e.g., Forms servers, APPL_TOPs, databases, etc.).Part 2 focuses on verifying parameters of the Change Management features, also called "Pack Diagnostics, specifically for Customization Manager, Patch Manager, Setup Manager, Automated Cloning, and User Monitoring.  As stated in the first post, there can be numerous reasons that Discovery fails - credentials, file-level permissions, patch levels - just to name a few.The Discovery Wizard can be accessed from the EBS homepage.  From the home page, click "Pack Diagnostics"Click "Create" to define the diagnostic processProvide the required inputs; Name, Module (i.e., Customization Manager, Patch Manager, Setup Manager, Automated Cloning, and User Monitoring), Show Details (typically "All"), and Category (typically check both Generic and User Specific).  Add the appropriate targets.Once the diagnostic process has completed, view the results.  Click on "Succeeded" or "Failed" in the Status column.Expand the entire tree and click on each "Succeeded/Failed" status to see the results of each test within that task.Sample output verifying o/s user name and required patches Additional sample output showing a failed testComplete descriptions of, as well as recommended corrective actions for, all of the diagnostic tests that are run in EM 12c is found in this spreadsheet.  Additional information can be found in the Application Management Pack User Guide.

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  • Mark Wilcox Discusses Privileged Account Management

    - by Naresh Persaud
    96 800x600 Normal 0 false false false EN-US JA X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:Calibri;} The new release of Oracle Identity Management 11g R2 includes the capability to manage privileged accounts. Privileged accounts, if compromised, create a risk for fraud in the enterprise and as a result controlling access to privileged accounts is critical. The Oracle Privileged Account Manager solution can be deployed stand alone or in conjunction with the Oracle Governance Suite for a comprehensive solution. As part of the comprehensive platform, Privilege Account Manager is interoperable with the Identity suite. In addition, Privileged Account Manager can re-use Oracle Identity Manager connectors for propagating changes to target systems. The two are interoperable at the data level. I caught up with Mark Wilcox, Principal Product Manager of Oracle Privileged Account Manager and discussed with him the capabilities of the offering in this podcast. Click here to listen.

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  • Unity's gone! How do I get it back?

    - by Kelley
    Earlier today my Unity desktop disappeared: I got a black screen with white text, but it disappeared too quickly for me to read. When the desktop reappeared, it was the Ubuntu Classic desktop. I used $ unity --reset but that did not do anything. I tried rebooting so I could choose unity from the list when I logged in, but although there was Ubuntu choice, there was no unity listed (but classic was listed). I was able to install Unity 2D and am using that, but really want to get 3D back. I had been using Ubuntu without problems for several weeks when this happened. My graphics card is onboard a Dell Latitude desktop - a couple years old - and is reported as an Intel G33/G31. I've looked at other requests for help here, and tried suggestions when they seemed to relate to similar problems, but nothing seems to work so far. Any ideas? Thanks! This is part of the output of my latest attempt to run unity --reset Window manager warning: 0x3e01c35 () appears to be one of the offending windows with a timestamp of 1309472834. Working around... Window manager warning: last_user_time (1309473695) is greater than comparison timestamp (1126160). This most likely represents a buggy client sending inaccurate timestamps in messages such as _NET_ACTIVE_WINDOW. Trying to work around... Window manager warning: 0x4c0046c (mdk@Habane) appears to be one of the offending windows with a timestamp of 1309473695. Working around... Window manager warning: Received a NET_CURRENT_DESKTOP message from a broken (outdated) client who sent a 0 timestamp Window manager warning: Buggy client sent a _NET_ACTIVE_WINDOW message with a timestamp of 0 for 0x4c0046c (mdk@Habane) Window manager warning: meta_window_activate called by a pager with a 0 timestamp; the pager needs to be fixed.

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  • IOUG SIG Webcast on October 30th : Performance Tuning your DB Cloud

    - by Anand Akela
    The Oracle Enterprise Manager Special Interest Group (SIG) is a growing body of IOUG members who manage or are interested in all aspects of Oracle Enterprise Manager. This IOUG SIG is managed by volunteers and supported by Oracle Enterprise Manager product managers and developers. The purpose of the SIG is to bring relevant information and education through webcasts, discussions and networking to users interested in learning more about the product, and to share user experiences. On October 30th at 10 AM pacific time, Oracle Enterprise Manager SIG is hosting a webcast on "Performance Tuning your DB Cloud in OEM 12c Cloud Control - 360 Degrees". In this webcast, Tariq Farooq , CEO, BrainSurface and Mike Ault, Oracle  will provide a tutorial on how to monitor and perform performance tuning of the Oracle database cloud environment. You will learn how to leverage Oracle Enterprise Manager for tuning, trouble-shooting & monitoring your Oracle Database Cloud Ecosystem. The session covers lessons learned, tips/tricks, recommendations, best practices, gotchas and a whole lot more on how to effectively use Oracle Enterprise Manager Cloud Control 12c for quick, easy & intuitive performance tuning of your Oracle Database Cloud. Session Objectives:• Leveraging OEM12c Cloud Control for Oracle DB Tuning/Monitoring • Limited Deep-Dive on AWR • Oracle DB Cloud Performance Tuning • Best Practices for DB Cloud Maintenance/Monitoring Register Now ! Stay Connected: Twitter |  Face book |  You Tube |  Linked in |  Google+ |  Newsletter

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