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  • What is appropriate way for managing MySQL connection through C#

    - by Sylca
    My question, at the bottom line, is what is the appropriate(best) way to manage our connection towards MySQL db with C#. Well, currently I'm working on some C# (winforms type) <- MySQL application and I've been looking at Server Connections in MySQL Administrator, been witness of execution of my mysql_queries, connection opens an closes, ... an so on! In my C# code I'm working like this and this is an example: public void InsertInto(string qs_insert) { try { conn = new MySqlConnection(cs); conn.Open(); cmd = new MySqlCommand(); cmd.Connection = conn; cmd.CommandText = qs_insert; cmd.ExecuteNonQuery(); } catch (MySqlException ex) { MessageBox.Show(ex.ToString()); } finally { if (conn != null) { conn.Close(); } } } Meaning, every time I want to insert something in db table I call this table and pass insert query string to this method. Connection is established, opened, query executed, connection closed. So, we could conclude that this is the way I manage MySQL connection. For me and my point of view, currently, this works and its enough for my requirements. Well, you have Java & Hibernate, C# & Entity Framework and I'm doing this :-/ and it's confusing me. Should I use MySQL with Entity Framework? What is the best way for collaboration between C# and MySQL? I don't want to worry about is connection that I've opened closed, can that same connection be faster, ...

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  • mobile broadband quick connect..how to?

    - by Ubuntuser
    Hello all, I have a Reliance broadband + mobile broadband connection. It connects fine, but the only problem is it takes more than 2 -3 mins to get the connection started. If I plug in the USB datacard, the network manager applet dothes not show up the mobile broadband connection immediately. It takes a good 2-3 mins to detect the connection before I can select Reliance connection from the dropdown list. Is there any way of getting a shortcut of that connection on the desktop or on the panel? Thanks, Sayantan

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  • Cannot establish ssh connection to computer on local network

    - by ovangle
    I've just (re)installed ubuntu 11.10 on my main pc, and the connection times out every time I try to ssh connect to my laptop (over the local network) to retrieve the files I backed up there. The connection times out every time I try to connect. I can establish a connection in the other direction without issue. Here's the verbose output I get when I try to connect: ovangle@ruby-EP43-DS3:~$ ssh -v [email protected] OpenSSH_5.8p1 Debian-7ubuntu1, OpenSSL 1.0.0e 6 Sep 2011 debug1: Reading configuration data /etc/ssh/ssh_config debug1: Applying options for * debug2: ssh_connect: needpriv 0 debug1: Connecting to 10.1.1.4 [10.1.1.4] port 22. debug1: connect to address 10.1.1.4 port 22: Connection timed out ssh: connect to host 10.1.1.4 port 22: Connection timed out ssh is installed on both machines, and I've tried deleting '~/.ssh/known_hosts' on both machines, still nada. I've changed the sshd logging on the laptop to VERBOSE and restarted the daemon (because I wasn't getting any relevant syslog entries otherwise), and this is the log for the most recent connection attempt. EDIT: posted wrong logs last time. They just showed that there was a connection received, they weren't actually the sshd logs (which were in auth.log as I recently discovered). Unfortunately, that log is filling up with extremely weird error messages and it gives me no information about the connection. Nov 8 16:02:18 ovangle-A6Rp pkexec: pam_unix(polkit-1:session): session opened for user root by (uid=1000) Nov 8 16:02:18 ovangle-A6Rp pkexec: pam_ck_connector(polkit-1:session): cannot determine display-device Nov 8 16:02:18 ovangle-A6Rp pkexec[6270]: ovangle: Executing command [USER=root] [TTY=unknown] [CWD=/home/ovangle] [COMMAND=/usr/sbin/gnome-power-backlight-helper --set-brightness 2] Nov 8 16:02:19 ovangle-A6Rp pkexec: pam_unix(polkit-1:session): session opened for user root by (uid=1000) Nov 8 16:02:19 ovangle-A6Rp pkexec: pam_ck_connector(polkit-1:session): cannot determine display-device Nov 8 16:02:19 ovangle-A6Rp pkexec[6273]: ovangle: Executing command [USER=root] [TTY=unknown] [CWD=/home/ovangle] [COMMAND=/usr/sbin/gnome-power-backlight-helper --set-brightness 7]

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  • Windows Sharing requires password

    - by Linux Intel
    I have 3 machines on my local network Machine A , Machine B and Machine C OS on all machines is : Windows 7 64bit. Sharing Permissions on all machines : Everyone ( Read/Write ) no domain. Sharing folder name : project Machine A is sharing folder over the network without password. Machine B is sharing folder over the network without password. Machine C is sharing folder over the network without password. Machine A can normally access B and C without password required. Machine B can normally access A and C without password required Machine C can normally access Machine B without password. My problem is *Machine C* requires a password when it access Machine A also the shared folder in Machine A don't have password protected and Machine B can access Machine A without a password ! How can i solve the problem .?

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  • Syntax Error with MySQL 5.1 Server

    - by Mr.Z
    I am trying to connect to a server remotely using the command line client window. I am using MySQL 5.1 and I do not know why I am getting syntax error. If you can help me, that would be much appreciated. username as user password as pass hostname as example.com I have tried: mysql> -u user -h example.com -p ; mysql> -h example.com -u user -p ; I have looked at the reference manual and other verisons of remote connection with Server 5.1 but I can't see the syntax error.

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  • Connection pooling options with JDBC: DBCP vs C3P0

    - by Dema
    What is the best connection pooling library available for Java/JDBC? I'm considering the 2 main candidates (free / open-source): Apache DBCB - http://commons.apache.org/dbcp/ C3P0 - http://sourceforge.net/projects/c3p0 I've read a lot about them in blogs and other forums but could not reach a decision. Is there any relevant alternatives to this two?

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  • Help with connection string

    - by DanSogaard
    So I'm trying to connect to my database at the specified location, and the connection is established as long as the db at the same location specified at DataSource field, but what if I tried to distribute my application, the file path will change and will lead to errors I want to avoid. Here is my connstring: string connstring = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\Users\PC1\Documents\Visual Studio 2008\Projects\Test\Test\bin\Debug\MyDatabase01.accdb;Persist Security Info=true"; Is there anyway I can define DataSource location to be at the same folder?.

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  • Connection Pooling in J2SE?

    - by Zombies
    It is hard to find a resource on this without finding J2EE, but here is what I am looking for: All I have is a standard J2SE app, it makes a lot of DB connections. I simply need to make use of a connection pool. Any suggestions?

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  • How do I detect a connection break using MessageQueue

    - by Lopper
    My application written in C# makes use of the MessageQueue class in .NET for communicating messages with another remote application and the MessageQueue should always be "connected" (heartbeat present) with the remote messageQueue under all circumstances. If it is not "connected", then it signals that something is wrong and my application will need to perform some actions such as updating an event log. Is there a method in the MessageQueue class that can be used to detecting such breaks in connection?

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  • JBoss Database Connection Pool

    - by Salman
    I am new to jboss and i have been asked to incorporate jboss connection pooling mechanism with an existing web application. Considering that a web application database layer is properly written i.e. all resultsets, statements and connections being closed properly when not needed, What all code changes i will have to make in my web app after i have configured the jboss datasource properly. Can anybody please point me to a tutorial or a code sample which uses jboss datasource in a web app.

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  • DSNless connection for Aruna DB?

    - by vijay
    Right now we are using Fastpath ODBC DSN connection method to access our "ARUNA" db. Our development platform is .NET C#. But we are in need of connecting the DB without using DSN. Till now my search in google is turning futile. In the meantime I think i will get my answer here quickly. Is it possible to connect Aruna using DSN less method? Thanks in advance guys.

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  • SQLite connection pooling with Fluent NHibernate

    - by Groo
    Is there a way to setup SQLite connection pooling using Fluent NHibernate configuration? E.g. equivalent of DataSource=:memory: would be: var sessionFactory = Fluently .Configure() .Database(SQLiteConfiguration.Standard.InMemory) (etc.) Is there something eqivalent to "Pooling=True;Max Pool Size=1;"?

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  • What is best approach for connection pooling?

    - by Bhushan
    I am implementing connection pooling in project. Performance wise which is better approach to do it? Hibernate (using C3PO or DBCP) Configuring JDBC data-source in Application server. Application server Portability is not an important factor for me. Please suggest the approach.

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  • Setting Quercus db connection encoding to UTF-8 (urgent problem and need your great help)

    - by sokcmss
    Now we are going to use java class in my website developed with PHP + mySQL. I came to know Quercus and it worked well. But only problem is encoding. Quercus is providing ISO8859 encoding in default and all database in UTF-8 is not shown properly like ???. If anybody know the way to set Quercus db connection encoding to UTF-8, please help me. Look forward to hearing good news urgently.

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  • Http Connection in Android

    - by remish
    hello folks, i am new to android... I want to connect with server .Like i want to sent data and recieve data from server through Http Connection.. Can anyone help me how to do this. Can anyone provide me the sample of both side-client as well as server side. Thanks in advance...

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  • SQL Server 2008 R2 connection string

    - by user525717
    HI people. I had SQL Server 2005 on Windows XP 32bit and just used this connection string Server=.\SQLEXPRESS;database=GroupALD; Integrated Security=True" Now I have Windows 7 64bit and SQL Server 2008 R2 I'm trying to connect database with same string but its shows this error Cannot open database "GroupALD" requested by the login. The login failed. Login failed for user 'lester\les'. Can somebody help me? I'm using C# and Winforms

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  • NHibernate + Sql Compact + IoC - Connection Managment

    - by Michael
    When working with NHibernate and Sql Compact in a Windows Form application I am wondering what is the best practice for managing connections. With SQL CE I have read that you should keep your connection open vs closing it as one would typically do with standard SQL. If that is the case and your using a IoC, would you make your repositories lifetime be singletons so they exist forever or dispose of them after you perform a "Unit of Work". Also is there a way to determine the number of connections open to Sql CE?

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  • Java Socket Connection is flooding network OR resulting in high ping

    - by user1461100
    i have a little problem with my java socket code. I'm writing an android client application which is sending data to a java multithreaded socket server on my pc through direct(!) wireless connection. It works fine but i want to improve it for mobile applications as it is very power consuming by now. When i remove two special lines in my code, the cpu usage of my mobile device (htc one x) is totally okay but then my connection seems to have high ping rates or something like that... Here is a server code snippet where i receive the clients data: while(true) { try { .... Object obj = in.readObject(); if(obj != null) { Class clazz = obj.getClass(); String className = clazz.getName(); if(className.equals("java.lang.String")) { String cmd = (String)obj; if(cmd.equals("dc")) { System.out.println("Client "+id+" disconnected!"); Server.connectedClients[id-1] = false; break; } if(cmd.substring(0,1).equals("!")) { robot.keyRelease(PlayerEnum.getKey(cmd,id)); } else { robot.keyPress(PlayerEnum.getKey(cmd,id)); } } } } catch .... Heres the client part, where i send my data in a while loop: private void networking() { try { if(client != null) { .... out.writeObject(sendQueue.poll()); .... } } catch .... when i write it this why, i send data everytime the while loop gets executed.. when sendQueue is empty, a null "Object" will be send. this results in "high" network traffic and in "high" cpu usage. BUT: all send comments are received nearly immediately. when i change the code to following: while(true) ... if(sendQueue.peek() != null) { out.writeObject(sendQueue.poll()); } ... the cpu usage is totally okay but i'm getting some laggs.. the commands do not arrive fast enough.. as i said, it works fine (besides cpu usage) if i'm sending data(with that null objects) every while execution. but i'm sure that this is very rough coding style because i'm kind of flooding the network. any hints? what am i doing wrong?? Thanks for your Help! Sincerly yours, maaft

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  • making lan connection problem

    - by user216112
    i am making lan connection.afer all to do i have check all the setting of workgroup and all but if i am checking through ping command to check they are connected or not??only from one system reply is coming.from the secong system reply is not coming.and i m accessing the workgru=oup"the maessge\ pc2 is not accessible.the network path not found"what should i do??

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  • Connection Pooling in J2SE?

    - by Zombies
    It is hard to find a resource on this without finding J2EE, but here is what I am looking for: All I have is a standard J2SE app, it makes a lot of DB connections. I simply need to make use of a connection pool. Any suggestions?

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