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• Windows can't communicate with the device or resource (primary DNS server)

  - by David

  I am using Windows 7 Home Premium and am connecting to the Internet through Homeplug. When I connect and enable the LAN the status shows that I'm connected (the IPv4 shows connected), but after like 20 seconds it changes to No Internet connection. Even when it says I'm connected I can't connect to the Internet. My browser (Firefox) shows Server Not Found. When I run the troubleshooter it says "Windows can't communicate with the device or resource (primary DNS server)." What could be the problem, and how do I fix it?

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• Getting "is not a valid mailbox" when email sent to primary address

  - by Juan Tarquino

  Anyone outside my domain who sends me an email is getting a bounced email with the following error from Exchange: 550 550 5.1.1 [email protected] is not a valid mailbox (state 14). I can't receive emails from external addresses until I send an email to one of my secondary addresses. Once I sent it to my secondary address, my primary address will start working for a while and fail again after a few hours. We use Exchange 2003. Anyone has any suggestions on what to try?

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• Update primary key value using entity framework

  - by lemkepf

  I'm trying to update one value of a compound primary key from within the entity framework and I'm getting this error: "The property 'CustomerID' is part of the object's key information and cannot be modified. " Here is my code: Dim customer As Customer = (From c In db.Customer Where c.CustomerID = "xxx" AndAlso c.SiteKey = siteKey).FirstOrDefault customer.CustomerID = "fasdfasdf" db.SaveChanges() It seems too simple. Is it true you can't update a primary key within the entity framework? I can't find any documentation on the topic. Thanks!

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• C# integer primary key generation using Entity Framework with local database file (Sdf)

  - by Ronny

  Hello, I'm writing a standalone application and I thought using Entity Framework to store my data. At the moment the application is small so I can use a local database file to get started. The thing is that the local database file doesn't have the ability to auto generate integer primary keys as SQL Server does. Any suggestions how to manage primary keys for entities in a local database file that will be compatible with SQL Server in the future? Thanks, Ronny

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• How do I get entity for primary key using EntityDataSource in ASP.NET

  - by drasto

  I have a GridView in my ASP.NET application that takes data to be rendered from EntityDataSource. GridView allows user to select rows. I want to get the entity that corresponds to the row user selected. I can get from GridView the ID(primary key) of the entity that corresponds to the row selected. How can I get the Entity that has that ID(primary key) ?

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• Alter Sql table (Change foreign key to Second primary of the table)

  - by vix

  Hi, I've a sql table with a primary key(Auto Incremented) and a foreign key.Now I need to modify the table by modifying the foreign key to second primary key so that its values are not allowed to duplicate. How do i alter my table without affecting the data? Need the sql code. Regards, Vix

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• Association not imported in EF4 designer for non-primary key

  - by Rommel Manalo

  The relationship 'FK_EXTERNAL_ISMARKETI_MARKETIN' has columns that are not part of the key of the table on the primary side of the relationship. The relationship was excluded. USE [Instruments.UnitTest] GO ALTER TABLE [Instr].[ExternalIdentification] WITH CHECK ADD CONSTRAINT [FK_EXTERNAL_ISMARKETI_MARKETIN] FOREIGN KEY([InstrumentID], [MarketInstrumentID]) REFERENCES [Instr].[MarketInstrument] ([InstrumentID], [MarketInstrumentID]) GO ALTER TABLE [Instr].[ExternalIdentification] CHECK CONSTRAINT [FK_EXTERNAL_ISMARKETI_MARKETIN] GO I'm using an association for NON-PRIMARY KEY columns, is this possible in the EF4?

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• TableAdapter UpdateCommand For Table Without Primary Key

  - by Steven

  What is the syntax for an Update query for a table without a primary key? Disclaimer: Frustratingly, adding a primary key is not an option. My program is a small program in a much larger system with poor data management. My development time does not include rewriting the other software.

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• Excel: TableAdapter UpdateCommand for table without primary key

  - by Steven

  What is the syntax for an Update query / UpdateCommand for a table from an Excel Data Source (therefore having no a primary key)? Note: Similar to: MS-Access: TableAdapter UpdateCommand for table without primary key

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• Edit primary keys in Symfony auto-generated admin

  - by madkingbilly

  I need to edit primary keys in several tables. By default, symfony hides primary keys in New/Edit forms. For example, can't edit table 'Tags' with only field 'tag' which is PK. Adding integer ID to this table is not exactly good db design. Thanks in advance for your help.

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• How to define two primary keys in an hbm

  - by sarah

  Hi, I have a table with two primary keys,how can i map the same in hbm mapping file.How to define two primary keys.

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• MS-Access: TableAdapter UpdateCommand for table without primary key

  - by Steven

  What is the syntax for an Update query for a table without a primary key? Disclaimer: Frustratingly, adding a primary key is not an option. My program is a small program in a much larger system with poor data management. My development time does not include rewriting the other software. Note: The database is Microsoft Access.

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• Drupal: set active class on primary links menu depending on path or content type

  - by benmango

  Hi there, I have some styling based on the primary links active class. I would like to set the class of a link in the primary links to active (<a class="active"...>) based on either the content type or the path. I have already done some research on this but haven't yet seen anything that seems to match my query. Would be grateful for any help. Ben

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• Defining a different primary key in Mongomapper

  - by ming yeow

  I am defining a primary key in MongoMapper. class B key :_id, string key :externalId, string end The problem is that everything i add a new record in B, it appears that I need to explicity specify the _id, when it is already defined in the external id B.new(:_id=>"123", :external_id=>"123 ) That does not quite make sense. There should be a way to specify externalId as the primary key, no?

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• Copying a Table in MySQL and including the Primary Key

  - by Alan Storm

  I have an ancient code snippet I use for copying tables in MySQL. CREATE TABLE new_table (select * from old_table); This works great, with one exception. It doesn't copy the primary key or other table indexes. Is there any way to copy a table in MySQL AND include the indexes/primary key??

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• how to generate primary key values while inserting data into table through pl/sql stored procedure

  - by thulasi policherla

  hi friends, I am trying to insert data into particular table through pl/sql stored procedure,my requirement is while inserting i should generate PRIMARY KEY values for particular column and also i should return that PRIMARY KEY value to output and one more thing is that for another column i should validate my string such that it should contain only characters not integers. please help me in writing code for the above requirement Thanks and regards thulasi policherla

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• Hint to MVC view generator for primary key on POCOs

  - by myotherme

  When generating a strongly-typed Index view for my model I always get the following: <%= Html.ActionLink("Edit", "Edit", new { /* id=item.PrimaryKey */ }) %> I am using a POCO class for use with our ORM. As I understand it when using LINQ to SQL the view code will know which field is the primary key. Is there a way that I can an attribute to the property (or class) that will let the View Generator know that the ID property if the primary key?

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• Use to host email for a domain name that wasn't our primary domain name

  - by drpcken

  Exchange 2007 on an Server 2003 active directory. My primary domain (MyMainDomain.com) controller also hosts dns and dhcp. I have a secondary domain name (MySecondDomain.net) that my Exchange Server allows emails from. It wasn't a physical domain, just accepted by exchange and setup as the Active Directory user's main smtp and outgoing address. Its MX records point to MyMainDomain.com's public exchange address. I've taken MySecondDomain.net and move the mail boxes to a hosted exchange 2010 environment. MX records now point to this new exchange system and when I send and email OUTSIDE the MyMainDomain.com environment (say gmail) it works and sends to the hosted exchange setup for MySecondDomain.net. however when I send an email from a user on MyMainDomain.com, it goes to the old exchange 2007 server I am hosting internally. I have removed MySecondDomain.net from the allowed domains, removed the DNS zone for MySecondDomain.net, and cleared DNS cache. I was convinced it was my internal dns server but I've cleared the DNS cache. Is there something I'm missing somewhere in exchange 2007? Or is it my domain controller/dns? Sorry if this is confusing. Thank you!

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• Primary/secondary ethernet interfaces in Ubuntu 9.10

  - by Josh

  I have an Ubuntu 9.10 machine with three ethernet interfaces, eth0, eth1 and eth2. eth2 is connected to a private network. eth0 and eth2 are connected to two different LANs. Either one will provide access to the internet. All three networks have DHCP servers. Using Ubuntu's the default settings (And Gnome), when I boot up all the interfaces are active and my system gets three IP addresses. However any attempt to access the internet results in connection timeouts and other weirdness. I suspect that traffic is going out on one NIC (like eth0) and coming back in on another (like eth1). I'm not sure what's going on. The only way I can access the internet at the moment is to bring two of the devices down with ifdown. How can I configure eth0 as my primary interface so all trafic goes out by default on that interface, while keeping the other two active? Also, I want to make sure Avahi broadcasts properly on all three IPs so that the computers on the LAN of eth1 can still connect to myHostname.local...

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• A GUID as the MySQL table's Primary Key or as a separate column

  - by Ben

  I have a multi-process program that performs, in a 2 hour period, 5-10 million inserts to a 34GB table within a single Master/Slave MySQL setup (plus an equal number of reads in that period). The table in question has only 5 fields and 3 (single field) indexes. The primary key is auto-incrementing. I am far from a DBA, but the database appears to be crippled during this two hour period. So, I have a couple of general questions. 1) How much bang will I get out of batching these writes into units of 10? Currently, I am writing each insert serially because, after writing, I immediately need to know, in my program, the resulting primary key of each insert. The PK is the only unique field presently and approximating the order of insertion with something like a Datetime field or a multi-column value is not acceptable. If I perform a bulk insert, I won't know these IDs, which is a problem. So, I've been thinking about turning the auto-increment primary key into a GUID and enforcing uniqueness. I've also been kicking around the idea of creating a new column just for the purposes of the GUID. I don't really see the what that achieves though, that the PK approach doesn't already offer. As far as I can tell, the big downside to making the PK a randomly generated number is that the index would take a long time to update on each insert (since insertion order would not be sequential). Is that an acceptable approach for a table that is taking this number of writes? Thanks, Ben

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• Handling primary key duplicates in a data warehouse load

  - by Meff

  I'm currently building an ETL system to load a data warehouse from a transactional system. The grain of my fact table is the transaction level. In order to ensure I don't load duplicate rows I've put a primary key on the fact table, which is the transaction ID. I've encountered a problem with transactions being reversed - In the transactional database this is done via a status, which I pick up and I can work out if the transaction is being done, or rolled back so I can load a reversal row in the warehouse. However, the reversal row will have the same transaction ID and so I get a primary key violation. I've solved this for now by negating the primary key, so transaction ID 1 would be a payment, and transaction ID -1 (In the warehouse only) would be the reversal. I have considered an alternative of generating a BIT column, where 0 is normal and 1 is reversal, then making the PK the transaction ID and the BIT column. My question is, is this a good practice, and has anyone else encountered anything like this? For reference, this is a payment processing system, so values will not be modified, so there will only ever be transactions and reversals.

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• NHibernate with string primary key and relationships

  - by John_

  I've have just been stumped with this problem for an hour and I annoyingly found the problem eventually. THE CIRCUMSTANCES I have a table which users a string as a primary key, this table has various many to one and many to many relationships all off this primary key. When searching for multiple items from the table all relationships were brought back. However whenever I tried to get the object by the primary key (string) it was not bringing back any relationships, they were always set to 0. THE PARTIAL SOLUTION So I looked into my logs to see what the SQL was doing and that was returning the correct results. So I tried various things in all sorts of random ways and eventually worked out it was. The case of the string being passed into the get method was not EXACTLY the same case as it was in the database, so when it tried to match up the relationship items with the main entity it was finding nothing (Or at least NHIbernate wasn't because as I stated above the SQL was actually returning the correct results) THE REAL SOLUTION Has anyone else come across this? If so how do you tell NHibernate to ignore case when matching SQL results to the entity? It is silly because it worked perfectly well before now all of a sudden it has started to pay attention to the case of the string.

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• nginx php5-fpm "File not found" -- FastCGI sent in stderr: "Primary script unknown"

  - by jmfayard

  so I'm trying to run for the first time the nginx web server with php5-fpm on a debian wheezy server Hitting a php file display simply File not found I have done my research (waste a lot of hours actually ;), there are a lot of people that have similar problems, yet I didn't succeed to correct it with what worked for them. I still have the same error : $ tail /var/log/nginx/access.log /var/log/nginx/error.log /var/log/php5-fpm.log | less == /var/log/nginx/error.log <== 2013/10/26 21:36:00 [error] 6900#0: *1971 FastCGI sent in stderr: "Primary script unknown" while reading response header from upstream, I have tried a lot of things, it's hard to remember what. I have put my config files on github my /etc/nginx/nginx.conf my /etc/php5/fpm/php-fpm.conf Currently, the nginx.conf configuration uses this... server { server_name mydomain.tld; root /srv/data1/test; location ~ \.php$ { try_files $uri =404; fastcgi_pass 127.0.0.1:9000; fastcgi_index index.php; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; include fastcgi_params; } } /etc/php5/fpm/pool.d/www.conf contains listen = 127.0.0.1:9000 I have tried the unix socket version, same thing. fastcgi_pass unix:/var/run/php5-fpm.sock; I made sure the server is started $ netstat -alnp | grep LISTEN tcp 0 0 127.0.0.1:9000 0.0.0.0:* LISTEN 6913/php-fpm.conf) tcp 0 0 127.0.0.1:3306 0.0.0.0:* LISTEN 4785/mysqld tcp 0 0 0.0.0.0:842 0.0.0.0:* LISTEN 2286/inetd tcp 0 0 0.0.0.0:111 0.0.0.0:* LISTEN 2812/rpcbind tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 5710/nginx tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 2560/sshd tcp 0 0 0.0.0.0:443 0.0.0.0:* LISTEN 5710/nginx tcp6 0 0 :::111 :::* LISTEN 2812/rpcbind unix 2 [ ACC ] STREAM LISTENING 323648 6574/tmux /tmp//tmux-1000/default unix 2 [ ACC ] STREAM LISTENING 619072 6790/fcgiwrap /var/run/fcgiwrap.socket unix 2 [ ACC ] SEQPACKET LISTENING 323 464/udevd /run/udev/control unix 2 [ ACC ] STREAM LISTENING 610686 2812/rpcbind /var/run/rpcbind.sock unix 2 [ ACC ] STREAM LISTENING 318633 4785/mysqld /var/run/mysqld/mysqld.sock Each time I modify the nginx.conf file, I make sure to relaunch this command nginx -t && nginx -s reload && echo "nginx configuration reloaded" and same thing for php5-fpm /etc/init.d/php5-fpm restart Thanks for your help :-)

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• windows 2003 server : can't find a primary authoritative dns server for the name srv.domain1.local [

  - by phill

  I originally tried to rejoin a computer to a network which led to a "cannot find domain" error. The username/password box don't even come up. some tests i ran: I can ping the server, however I can't ping the domain name domain1.local. nslookup can't find the domain either. It looks to the isp's dns instead of my own to resolve the local machines. So i go to the dns and run netdiag.exe and gives me this error. DNS test . . . . . . . . . . . . . : Failed [WARNING] Cannot find a primary authoritative DNS server for the name 'stmartinsrv.stmartin.local.'. [RCODE_SERVER_FAILURE] The name 'srv.domain1.local.' may not be registered in DNS. [WARNING] The DNS entries for this DC are not registered correctly on DNS se rver '68.94.156.1'. Please wait for 30 minutes for DNS server replication. [WARNING] The DNS entries for this DC are not registered correctly on DNS se rver '68.94.157.1'. Please wait for 30 minutes for DNS server replication. [FATAL] No DNS servers have the DNS records for this DC registered. Redir and Browser test . . . . . . : Passed List of NetBt transports currently bound to the Redir NetBT_Tcpip_{04BB0F6B-06AE-4D60-80C8-2A7A24C1D87B} The redir is bound to 1 NetBt transport. List of NetBt transports currently bound to the browser NetBT_Tcpip_{04BB0F6B-06AE-4D60-80C8-2A7A24C1D87B} The browser is bound to 1 NetBt transport. from previous postings, I've tried adding the domain suffix to the nic ip properties to both the client machine and the dc server which didn't help. any ideas? thanks in advance

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• Open source embedded filesystem (or single file virtual filesystem, or structured storage) library f

  - by Ioan

  I'm not sure what the "general" name of something like this might be. I'm looking for a library that gives me a file format to store different types of binary data in an expanding single file. open source, non-GPL (LGPL ok) C interface the file format is a single file multiple files within using a POSIX-like file API (or multiple "blobs" within using some other API) file/structure editing is done in-place reliable first, performant second Examples include: the virtual drives of a virtual machine whefs HDF CDF NetCDF Problems with the above: whefs doesn't appear to be very mature, but best describes what I'm after HDF, CDF, NetCDF are usable (also very reliable and fast), but they're rather complicated and I'm not entirely convinced of their support for opaque binary "blobs" Edit: Forgot to mention, one other relevant question: http://stackoverflow.com/questions/1361560/simple-virtual-filesystem-in-c-c Another similar question: http://stackoverflow.com/questions/374417/is-there-an-open-source-alternative-to-windows-compound-files Edit: Added condition of in-place editing.

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