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  • Dovecot unable to perform mysql query

    - by NathanJ2012
    I have been following the ISPMail tutorials on workaround.org (the 2.9 Wheezy version) and thus far everything has been working fine. When I reached the step to "Testing email delivery" step I noticed a error about the query in the output log from /var/log/mail.log. May 14 06:48:59 mail postfix/pickup[17704]: EA4AD240A98: uid=0 from=<root> May 14 06:48:59 mail postfix/cleanup[17776]: EA4AD240A98: message-id=<[email protected]> May 14 06:48:59 mail postfix/qmgr[17706]: EA4AD240A98: from=<[email protected]>, size=429, nrcpt=1 (queue active) May 14 06:49:00 mail dovecot: auth-worker(17782): mysql(127.0.0.1): Connected to database mailserver May 14 06:49:00 mail dovecot: auth-worker(17782): Warning: mysql: Query failed, retrying: Table 'mailserver.users' doesn't exist May 14 06:49:00 mail dovecot: auth-worker(17782): Error: sql([email protected]): User query failed: Table 'mailserver.users' doesn't exist (using built-in default user_query: SELECT home, uid, gid FROM users WHERE username = '%n' AND domain = '%d') May 14 06:49:00 mail dovecot: lda([email protected]): msgid=<[email protected]>: saved mail to INBOX May 14 06:49:00 mail postfix/pipe[17780]: EA4AD240A98: to=<[email protected]>, relay=dovecot, delay=0.09, delays=0.03/0.01/0/0.06, dsn=2.0.0, status=sent (delivered via dovecot service) May 14 06:49:00 mail postfix/qmgr[17706]: EA4AD240A98: removed I found this rather interesting that it isn't finding the DB so I went back through and checked EVERY file that I touched that involved the DB (including the postfix cf files) and everything is correct so I am baffled at this point, but oddly enough it would seem the email still made it to the correct destination in /var/vmail/domain.com/. Should I be worried about this or am I missing something here? Since it is a message from dovecot it would be the query from dovecot-sql.conf.ext which I am including here driver = mysql connect = host=127.0.0.1 dbname=mailserver user=blocked password=***REMOVED*** default_pass_scheme = PLAIN-MD5 password_query = SELECT email as user, password FROM virtual_users WHERE email='%u';

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  • Does MySQL log successful or attempted queries?

    - by Nathan Long
    I'm trying to track down a hit-or-miss bug in a web application. Sometimes a request completes just fine; sometimes it hangs and never finishes. I see that Apache now has several requests listed on the server-status page as "sending reply," and that doesn't change. I'm testing on localhost, so there shouldn't ever be more than one. Out of curiosity, I set MySQL to log all queries and I'm tail -fing the log file. When things go OK, I see a pattern like this: 20 Connect root@localhost on dbname 20 Query (some query #1) 20 Query (some query #2) (etc) 20 Quit 21 Connect (etc) When it hangs, I see a pattern like this: 22 Connect root@localhost on dbname 22 Query (some query #1) //nothing happens, so I try the post again 23 Connect root@localhost on dbname 23 Query (some query #1) //nothing happens; try again 24 Connect (etc) Here's my question: is MySQL logging attempted queries, or successful queries? In other words, if the last line I see is query #1, does that imply that query #1 or query #2 is hanging? My guess is that the one I don't see is the problem, because the last one I see looks fine, but maybe the one I don't see is too screwed-up for MySQL to process. Thoughts?

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  • MySQL is killing the server IO.

    - by OneOfOne
    I manage a fairly large/busy vBulletin forums (running on gigenet cloud), the database is ~ 10 GB (~9 milion posts, ~60 queries per second), lately MySQL have been grinding the disk like there's no tomorrow according to iotop and slowing the site. The last idea I can think of is using replication, but I'm not sure how much that would help and worried about database sync. I'm out of ideas, any tips on how to improve the situation would be highly appreciated. Specs : Debian Lenny 64bit ~12Ghz (6 cores) CPU, 7520gb RAM, 160gb disk. Kernel : 2.6.32-4-amd64 mysqld Ver 5.1.54-0.dotdeb.0 for debian-linux-gnu on x86_64 ((Debian)) Other software: vBulletin 3.8.4 memcached 1.2.2 PHP 5.3.5-0.dotdeb.0 (fpm-fcgi) (built: Jan 7 2011 00:07:27) lighttpd/1.4.28 (ssl) - a light and fast webserver PHP and vBulletin are configured to use memcached. MySQL Settings : [mysqld] key_buffer = 128M max_allowed_packet = 16M thread_cache_size = 8 myisam-recover = BACKUP max_connections = 1024 query_cache_limit = 2M query_cache_size = 128M expire_logs_days = 10 max_binlog_size = 100M key_buffer_size = 128M join_buffer_size = 8M tmp_table_size = 16M max_heap_table_size = 16M table_cache = 96 Other : > vmstat procs -----------memory---------- ---swap-- -----io---- -system-- ----cpu---- r b swpd free buff cache si so bi bo in cs us sy id wa 9 0 73140 36336 8968 1859160 0 0 42 15 3 2 6 1 89 5 > /etc/init.d/mysql status Threads: 49 Questions: 252139 Slow queries: 164 Opens: 53573 Flush tables: 1 Open tables: 337 Queries per second avg: 61.302. Edit Additional info.

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  • python mysqldb - mysql server gone away - can't reconnect

    - by david.barkhuizen
    When attempting to import a bunch of data into mysql tables using python and mysqldb, I run into the following error '2006 - mySQL Server has gone away', and then I am unable to reconnect again within the script. I am iniitially re-using a connection object across transactions ( delineated by conn.commit() ), then when I first encounter this exception, if I create a new connection by calling MySQLdb.connect(), this new connection also fails with the same exception. This error does not occur immediately, I can pump a fair amount of data into the db, but then faithfully occurs after I have inserted a couple thousand records, so roughly once the db has committed a certain transaction volume, it always falls over like this. If I rerun the script, WITHOUT restarting the db server. then it resumes where it left off, pumps in some data, then falls over again. Before recommendations to change time-out timings, does anyone know why I am not able to establish a new connection after the initial failure ? - Even if I try a couple of times waiting a couple of seconds between each. (btw, I'm running Windows 7, mysql server 5.1.48, mysqldb 1.2.3.gamma.1, python 2.6)

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  • debugging connection to mysql from python script using MySQLdb

    - by timpone
    I am a python newbie and have a python 2.5 script that is using MySQLdb to connect on OS X 10.5.8. I haven't been able to succesfully connect to the database of interest with this. However, I am able to connect using php's mysqli and also via the mysql cli interface. I get the error: File "build/bdist.macosx-10.5-i386/egg/MySQLdb/connections.py", line 188, in __init__ _mysql_exceptions.OperationalError: (1045, "Access denied for user 'arc_development'@'localhost' (using password: YES)") On my linux box which has the same mysql perms, the script works fine logging in. On my OS X laptop, I am able to create a database named test_python which bypasses mysql authentication scheme. This makes me think that issues like 32bit / 64bit incompatabilities aren't occuring. If I turn on the query log, I get access denied: 100610 20:56:55 4 Connect Access denied for user 'arc_development'@'localhost' (using password: YES) I'm a little bit at a loss to what to do next. Is there any way I can specify in the general log or binary log to get the actual password set on the connection string? How about writing out from connections.py file the value (although not sure how I'd do that)? thanks

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  • Changing open-files-limit in mysql 5.5

    - by davidv
    I'm having an issue with mysql 5.5 running on Ubuntu 12.04 with the open-files-limit parameter. I recently noticed some problems due to the 1024 limit, and actually the main system limit was set to 1024, so I modified /etc/security/limits.conf with the following: * soft nofile 32000 * hard nofile 32000 root soft nofile 32000 root hard nofile 32000 After that I check the ulimit value for root and even for mysql user, both returned the new value: 32000, so I assume the change has already been done. I also changed the value at the my.cnf file, setting open-files-limit to 24000, like this: open-files-limit = 24000 Now comes the odd part, when I restart the mysql service and check the open_files_limit variable, it returns that it's still set to 1024, so I'm having the same problems that before (obviously), I tried to use open-files-limit instead open_files_limit in the my.cnf config file, same result, BUT if I override the service command to start the service and start only using mysqld (no additional parameters), the service starts and when I check the parameter it returns 32000... I don't know where it's taking that value from, as it's not set at my.cnf and it's not being given through command line, at least, not for myself. Any ideas about why it's not working the change and how to solve it the normal way (launching it through service...)?

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  • MySQL ADO.NET Connector & MSSQL Integration Services

    - by user1114330
    Here I am, day three... attempting to sync a data view on a Windows Vista box (64 bit) running MSSQL 2012 and Visual Studio 2010. Sanity is slipping and hunger for progress fills my attention. I went through hell trying to get the MySQL ODBC drivers to get the job but to no avail...everyone seems to be lost and all the threads I can find are solutions that do not work for me. The problem: System DSN's not being seen by SSIS. SSIS DSN Not Showing as ODBC Data Source I make the decision to try out the ADO.NET connector...and to my surprise it is actually in the selection list in data sources in SSIS. So I take off running to create a Data Flow Task, create an ADO.NET Source (a local MSSQL DB)...all is good as usual. Then I move swiftly to creating a ADO.NET Destination, enter my credentials...wow, I am selecting a database finally on my linux server! Happy thinking that I finally have figured a way to get the job done. Then I move to mappings...nope, something is wrong...I am getting an error that hurts my eyes: Pipeline component has returned HRESULT error code 0xC0208457 from a a method call. Error at Data Flow Task [ADO NET Destination [81]]: Failed to get properties of external columns. The table name you entered may not exist or you do not have SELECT permission on the table object and an alternative attempt to get column properties through connection has failed. Detailed error messages are" You have an error in your SQL syntax check the manual that corresponds to your MySQL server version for the right syntax to use near "database".tablename" at line 1. The descriptor files on path C:\Program Files (x86)\Microsoft SQL Server\110\DTS\ProviderDescriptors\ does not contain schema information for connection of type MySQL.Data.MySqlClient.MySqlConnection. So it looks like it can't the information and therefore I cannot map the tables properly. Any ideas on this would be ultra helpful...thanks in advance to All!

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  • Error code 1005 (errno: 121) upon create table while restoring MySQL database from a dump

    - by Jonathan
    I have a linux prod machine and a Win7 64bit dev machine. My workflow includes dumping the production MySQL database on the linux machine and restoring it in my local MySQL database on the windows machine (using SQLyog). This worked fine for a long time. Following some trouble, I formatted and reinstalled my windows dev machine. Since then I'm unable to restore the db on it. I keep receiving the following error: Query: CREATE TABLE `auth_group` ( `id` int(11) NOT NULL auto_increment, `name` varchar(80) collate utf8_unicode_ci NOT NULL, PRIMARY KEY (`id`), UNIQUE KEY `name` (`name`) ) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci Error occured at:2010-06-26 17:16:14 Line no.:30 Error Code: 1005 - Can't create table 'ap_site.auth_group' (errno: 121) Notice that this is the first create table statement in the sql dump file. This error occurs both on MySQL Community Server 5.1.41 and 5.1.48 and with SQLyog Community 8.0.4 and 8.5.1. I really don't know what's different in my configuration from before the reinstall and now and why does it have this effect. Restoring from sql dump is something I need to keep on doing, so I need a permanent fix and not a tailored workaround.

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  • Slow connection to Linux MySQL from Windows only (XAMPP)

    - by Josh
    I'm having a problem with a PHP project (using Kohana 3.2 framework) on my Windows 7 64-bit machine connecting to the database. The development database is stored on a Ubuntu Linux server on the local network. Other development machines running OSX and Linux are connecting fine. There are no other Windows development machines to test with. I can access MySQL fine using MySQL Workbench, and other projects (which I believe to be less database heavy) run mostly ok, only occasionally getting timeout messages. I'm constantly getting Maximum execution time of 30 seconds exceeded when functions such as mysql_query() are run in this particular project. Specifically, the Kohana file where the timeout occurs is MODPATH\database\classes\kohana\database\mysql.php [ 186 ]. My local set-up is: Windows 7 Professional 64bit XAMPP 1.7.7 (PHP 5.3.8) The output of uname -a of the Linux server is: Linux peach 2.6.38-11-server #50-Ubuntu SMP Mon Sep 12 21:34:27 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux I've tried the following, with no success: Disabling Windows firewall Switching between using a persistant and normal connection In my.cnf, adding skip-name-resolve Increasing wait_timeout Enabling bind-address I've run out of ideas now, and have no idea how to debug an odd issue like this. Has anyone come across this before, or have any idea how I could find the root of the issue, or what might be the problem?

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  • MySQL root user can't access database

    - by Ed Schofield
    Hi all, We have a MySQL database ('myhours') on a production database server that is accessible to one user ('edsf') only, but not to the root user. The command 'SHOW DATABASES' as the root user does not list the 'myhours' database. The same command as the 'edsf' user lists the database: mysql> SHOW DATABASES; +--------------------+ | Database | +--------------------+ | information_schema | | myhours | +--------------------+ 2 rows in set (0.01 sec) Only the 'edsf' user can access the 'myhours' database with 'USE myhours'. Neither user seems to have permission to grant further permissions for this database. My questions are: Q1. How is it that the root user does not have permission to use the database? How could this have come about? The output of SHOW GRANTS FOR 'root'@'localhost'; looks fine to me: GRANT ALL PRIVILEGES ON *.* TO 'root'@'localhost' IDENTIFIED BY PASSWORD '*xxx' WITH GRANT OPTION Q2. How can I recover this situation to make this database visible to the MySQL root user and grant further permissions on it? Thanks in advance for any help! -- Ed

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  • Can not connect remotely to MySQL Server on Ubuntu 10.10

    - by BobFranz
    Ok I have searched google for two days trying to get this to work. Here are the steps I have taken so far: Clean install of Ubuntu 10.10 Install mysql 5.1 as well as admin Comment out the bind address in the config file Create a new database Create a new user that is username@% to allow remote connections Grant all access to this user to the new database EXCEPT the grant option Login on the server is ok using this new user and database on the localhost Login on the server is ok using this new user and database on the server internal network ip Login from a remote computer is ok using this new user and database using the internal network ip Login is not working when logging in with this username and database using the external ip address from the server or the remote computer. I have port forwarding enabled for this port and it is viewable from outside as confirmed by canyouseeme.org I have nmap'd using the following command on the internal ip and get the below result: nmap -PN -p 3306 192.168.1.73 Starting Nmap 5.21 ( http://nmap.org ) at 2011-02-19 13:41 PST Nmap scan report for computername-System-Name (192.168.1.73) Host is up (0.00064s latency). PORT STATE SERVICE 3306/tcp open mysql Nmap done: 1 IP address (1 host up) scanned in 0.23 seconds I have nmap'd using the following command on the internal ip and get the below result(I have hidden ip for obvious reasons): nmap -PN -p 3306 xxx.xxx.xx.xxx Starting Nmap 5.21 ( http://nmap.org ) at 2011-02-19 13:42 PST Nmap scan report for HOSTNAME (xxx.xxx.xx.xxx) Host is up (0.00056s latency). PORT STATE SERVICE 3306/tcp closed mysql Nmap done: 1 IP address (1 host up) scanned in 0.21 seconds I am completely stuck here and need some help. I have tried everything under the moon and still can not connect from a remote external ip address. Any help is greatly appreciated and I need to do anything to help find the problem let me know and I will post the results here.

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  • MySQL InnoDB/socket issue on Mac OS X 10.6.4

    - by user55217
    I have an ongoing issue on my Macbook Pro OS X 10.6.4. Intermittently, my MySQL install will not create a socket on startup. Rebooting sometimes, but not always, solves the problem. Deleting the ib* files in /usr/local/mysql/data and then restarting sometimes, but not always, solves the problem. My error logs tell me the following: Plugin InnoDB init function returned error Plugin InnoDB registration as a STORAGE ENGINE failed Can't start server: Bind on TCP/IP port: Address already in use Do you already have another mysqld server running on port: 3306? Aborting It then appears to attempt to start again and generates this error 20 - 30 times: Unable to lock ./ibdata1, error 35 Check that you do not already have another mysqld process using the same InnoDB data or log files Though the socket file is not created, I can connect to my MySQL db directly over localhost. Although, this does not help me from a PHP standpoint. Any thoughts on what I can do to resolve the issue or debug further? I'm at a loss as to where to go from here.

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  • SQL Server insert with XML parameter - empty string not converting to null for numeric

    - by Mayo
    I have a stored procedure that takes an XML parameter and inserts the "Entity" nodes as records into a table. This works fine unless one of the numeric fields has a value of empty string in the XML. Then it throws an "error converting data type nvarchar to numeric" error. Is there a way for me to tell SQL to convert empty string to null for those numeric fields in the code below? -- @importData XML <- stored procedure param DECLARE @l_index INT EXECUTE sp_xml_preparedocument @l_index OUTPUT, @importData INSERT INTO dbo.myTable ( [field1] ,[field2] ,[field3] ) SELECT [field1] ,[field2] ,[field3] FROM OPENXML(@l_index, 'Entities/Entity', 1) WITH ( field1 int 'field1' ,field2 varchar(40) 'field2' ,field3 decimal(15, 2) 'field3' ) EXECUTE sp_xml_removedocument @l_index EDIT: And if it helps, sample XML. Error is thrown unless I comment out field3 in the code above or provide a value in field3 below. <?xml version="1.0" encoding="utf-16"?> <Entities> <Entity> <field1>2435</field1> <field2>843257-3242</field2> <field3 /> </Entity> </Entities>

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  • insert data to table based on another table C#

    - by user1017315
    I wrote a code which takes some values from one table and inserts the other table in these values.(not just these values, but also these values(this values=values from the based on table)) and I get this error: System.Data.OleDb.OleDbException (0x80040E10): value wan't given for one or more of the required parameters.` here's the code. I don't know what i've missed. string selectedItem = comboBox1.SelectedItem.ToString(); Codons cdn = new Codons(selectedItem); string codon1; int index; if (this.i != this.counter) { //take from the DataBase the matching codonsCodon1 to codonsFullName codon1 = cdn.GetCodon1(); //take the serialnumber of the last protein string connectionString = "Provider=Microsoft.ACE.OLEDB.12.0;" + "Data Source=C:\\Projects_2012\\Project_Noam\\Access\\myProject.accdb"; OleDbConnection conn = new OleDbConnection(connectionString); conn.Open(); string last= "SELECT proInfoSerialNum FROM tblProInfo WHERE proInfoScienceName = "+this.name ; OleDbCommand getSerial = new OleDbCommand(last, conn); OleDbDataReader dr = getSerial.ExecuteReader(); dr.Read(); index = dr.GetInt32(0); //add the amino acid to tblOrderAA using (OleDbConnection connection = new OleDbConnection(connectionString)) { string insertCommand = "INSERT INTO tblOrderAA(orderAASerialPro, orderAACodon1) " + " values (?, ?)"; using (OleDbCommand command = new OleDbCommand(insertCommand, connection)) { connection.Open(); command.Parameters.AddWithValue("orderAASerialPro", index); command.Parameters.AddWithValue("orderAACodon1", codon1); command.ExecuteNonQuery(); } } } EDIT:I put a messagebox after that line: index = dr.GetInt32(0); to see where is the problem, and i get the error before that.i don't see the messagebox

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  • entity framework insert bug

    - by tmfkmoney
    I found a previous question which seemed related but there's no resolution and it's 5 months old so I've opened my own version. http://stackoverflow.com/questions/1545583/entity-framework-inserting-new-entity-via-objectcontext-does-not-use-existing-e When I insert records into my database with the following it works fine for a while and then eventually it starts inserting null values in the referenced field. This typically happens after I do an update on my model from the database although not always after I do an update. I'm using a MySQL database for this. I have debugged the code and the values are being set properly before the save event. They're just not getting inserted properly. I can always fix this issue by re-creating the model without touching any of my code. I have to recreate the entire model, though. I can't just dump the relevant tables and re-add them. This makes me think it doesn't have anything to do with my code but something with the entity framework. Does anyone else have this problem and/or solved it? using (var db = new MyModel()) { var stocks = from record in query let ticker = record.Ticker select new { company = db.Companies.FirstOrDefault(c => c.ticker == ticker), price = Convert.ToDecimal(record.Price), date_stamp = Convert.ToDateTime(record.DateTime) }; foreach (var stock in stocks) { if (stock.company != null) { var price = new StockPrice { Company = stock.company, price = stock.price, date_stamp = stock.date_stamp }; db.AddToStockPrices(price); } } db.SaveChanges(); }

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  • dynamically insert new rows in the table (JavaScript) ?

    - by Karandeep Singh
    <script type="text/javascript" language="javascript"> function addNewRow() { var table = document.getElementById("table1"); var tr = table.insertRow(); var td = tr.insertCell(); td.innerHTML= "a"; td = tr.insertCell(); td.innerHTML= "b"; td = tr.insertCell(); td.innerHTML= "c"; td = tr.insertCell(); td.innerHTML= "d"; td = tr.insertCell(); td.innerHTML= "e"; } </script> <body> <table id="table1" border="1" cellpadding="0" cellspacing="0" width="100%"> <tr id="row1"> <td>1</td> <td>2</td> <td>3</td> <td>4</td> <td>5</td> </tr> </table> <input type="button" onClick="addNewRow()" value="Add New"/> </body> This example is for dynamically insert new row and cells in the table. But its behavior is different in all browsers. Internet Explorer = It add row in the last and new added cells are starts from first. Chrome/Safari = It add new row in the first and new added cells are starts from end. Mozilla Firefox = It is not working. Sir, I want new added row in the last and new added cells starts from first like(Interner Explorer) in all browsers. If you have any solution for same behavior please tell me. Thanks,

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  • Oracle Insert via Select from multiple tables where one table may not have a row

    - by Mikezx6r
    I have a number of code value tables that contain a code and a description with a Long id. I now want to create an entry for an Account Type that references a number of codes, so I have something like this: insert into account_type_standard (account_type_Standard_id, tax_status_id, recipient_id) ( select account_type_standard_seq.nextval, ts.tax_status_id, r.recipient_id from tax_status ts, recipient r where ts.tax_status_code = ? and r.recipient_code = ?) This retrieves the appropriate values from the tax_status and recipient tables if a match is found for their respective codes. Unfortunately, recipient_code is nullable, and therefore the ? substitution value could be null. Of course, the implicit join doesn't return a row, so a row doesn't get inserted into my table. I've tried using NVL on the ? and on the r.recipient_id. I've tried to force an outer join on the r.recipient_code = ? by adding (+), but it's not an explicit join, so Oracle still didn't add another row. Anyone know of a way of doing this? I can obviously modify the statement so that I do the lookup of the recipient_id externally, and have a ? instead of r.recipient_id, and don't select from the recipient table at all, but I'd prefer to do all this in 1 SQL statement.

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  • C++ STL question related to insert iterators and sets

    - by rshepherd
    #include #include #include #include using namespace std; class MyContainer { public: string value; MyContainer& operator=(const string& s) { this->value = s; return *this; } }; int main() { list<string> strings; strings.push_back("0"); strings.push_back("1"); strings.push_back("2"); set<MyContainer> containers; copy(strings.begin(), strings.end(), inserter(containers, containers.end())); } The preceeding code does not compile. In typical STL style the error output is verbose and difficult to understand. The key part seems to be this... /usr/include/c++/4.4/bits/stl_algobase.h:313: error: no match for ‘operator=’ in ‘__result.std::insert_iterator::operator* [with _Container = std::set, std::allocator ]() = __first.std::_List_iterator::operator* [with _Tp = std::basic_string, std::allocator ]()’ ...which I interpet to mean that the assignment operator needed is not defined. I took a look at the source code for insert_iterator and noted that it has overloaded the assignment operator. The copy algorithm must uses the insert iterators overloaded assignment operator to do its work(?). I guess that because my input iterator is on a container of strings and my output iterator is on a container of MyContainers that the overloaded insert_iterator assignment operator can no longer work. This is my best guess, but I am probably wrong. So, why exactly does this not work and how can I accomplish what I am trying to do?

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  • Manage and Monitor Identity Ranges in SQL Server Transactional Replication

    - by Yaniv Etrogi
    Problem When using transactional replication to replicate data in a one way topology from a publisher to a read-only subscriber(s) there is no need to manage identity ranges. However, when using  transactional replication to replicate data in a two way replication topology - between two or more servers there is a need to manage identity ranges in order to prevent a situation where an INSERT commands fails on a PRIMARY KEY violation error  due to the replicated row being inserted having a value for the identity column which already exists at the destination database. Solution There are two ways to address this situation: Assign a range of identity values per each server. Work with parallel identity values. The first method requires some maintenance while the second method does not and so the scripts provided with this article are very useful for anyone using the first method. I will explore this in more detail later in the article. In the first solution set server1 to work in the range of 1 to 1,000,000,000 and server2 to work in the range of 1,000,000,001 to 2,000,000,000.  The ranges are set and defined using the DBCC CHECKIDENT command and when the ranges in this example are well maintained you meet the goal of preventing the INSERT commands to fall due to a PRIMARY KEY violation. The first insert at server1 will get the identity value of 1, the second insert will get the value of 2 and so on while on server2 the first insert will get the identity value of 1000000001, the second insert 1000000002 and so on thus avoiding a conflict. Be aware that when a row is inserted the identity value (seed) is generated as part of the insert command at each server and the inserted row is replicated. The replicated row includes the identity column’s value so the data remains consistent across all servers but you will be able to tell on what server the original insert took place due the range that  the identity value belongs to. In the second solution you do not manage ranges but enforce a situation in which identity values can never get overlapped by setting the first identity value (seed) and the increment property one time only during the CREATE TABLE command of each table. So a table on server1 looks like this: CREATE TABLE T1 (  c1 int NOT NULL IDENTITY(1, 5) PRIMARY KEY CLUSTERED ,c2 int NOT NULL ); And a table on server2 looks like this: CREATE TABLE T1(  c1 int NOT NULL IDENTITY(2, 5) PRIMARY KEY CLUSTERED ,c2 int NOT NULL ); When these two tables are inserted the results of the identity values look like this: Server1:  1, 6, 11, 16, 21, 26… Server2:  2, 7, 12, 17, 22, 27… This assures no identity values conflicts while leaving a room for 3 additional servers to participate in this same environment. You can go up to 9 servers using this method by setting an increment value of 9 instead of 5 as I used in this example. Continues…

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  • Beta Testing Begins for New MySQL 5.6 Developer and DBA Certification Exams

    - by Brandye Barrington
    Be among the first to earn one of Oracle's new MySQL certifications. Exams for the Oracle Certified Professional, MySQL 5.6 Developer (OCP) and Oracle Certified Professional, MySQL 5.6 Database Administrator OCP) certifications are now in beta testing, are are thus available at a greatly discounted rate of $50 USD. Explore the Oracle Certification exam pages below, which share a wealth of details, including preparation steps, exam objectives, number of questions, time allotments, and pricing.  MySQL 5.6 Developer (exam 1Z1-882) MySQL 5.6 Database Administrator (exam 1Z1-883) START TODAYExam appointments are available now. Easily register online by taking the following steps: STEP 1: Go to pearsonvue.com/oracle. STEP 2: Select exam 1Z1-882 (for developers) or exam 1Z1-883 (for DBAs). These new OCP credentials raise the bar for MySQL Certified Developers and Database Administrators. Start today and be among the first to be awarded the new Oracle MySQL 5.6 certifications. QUICK LINKS Oracle Certified Professional, MySQL 5.6 Developer - certification track | exam | VIDEO (2:54) Oracle Certified Professional, MySQL 5.6 Database Administrator - certification track | exam | VIDEO (3:00) Oracle MySQL 5.6 Certification Launch Learn More: Beta Testing Registration for exam: Pearson VUE

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  • MySQL Connector/Net 6.8.1 beta has been released

    - by Roberto Garcia
    Dear MySQL users, MySQL Connector/Net 6.8.1, a new version of the all-managed .NET driver for MySQL has been released. This is a beta release for 6.8.x and it's not recommended for production environments. It is appropriate for use with MySQL server versions 5.0-5.6 It is now available in source and binary form from http://dev.mysql.com/downloads/connector/net/#downloads and mirror sites (note that not all mirror sites may be up to date at this point-if you can't find this version on some mirror, please try again later or choose another download site.) The 6.8.1 version of MySQL Connector/Net has support for Entity Framework 6.0 and includes: - Changed EF migration history table to use a single column as primary key.- Removed installer validation when MySql for Visual Studio is installed.- Added idempotent script for Entity Framework 6 migrations.- Fix for WI #824, Connector/NET writes wrong version for binding redirects.- Fix for WI #825, Connector/NET 6.8.1 writes wrong namespace for binding redirects. The release is available to download at http://dev.mysql.com/downloads/connector/net/#downloads Documentation ------------------------------------- You can view current Connector/Net documentation at http://dev.mysql.com/doc/refman/5.6/en/connector-net.html You can find our team blog at http://blogs.oracle.com/MySQLOnWindows You can also post questions on our forums at http://forums.mysql.com/ Enjoy and thanks for the support! Connector/NET Team

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  • EOL of MySQL Forge

    - by Keith Larson
    Forge was intended to be a community wiki resource for sharing information with each other.   However, over the last few years, we have seen Forge used less and less by MySQL Community, and more by spammers. What happened? MySQL Worklogs and MySQL Internals documentation will be moved to dev.mysql.com and with new anti spam measures in place. The MySQL Wiki, which was the primary focus of forge.mysql.com has been migrated to https://wikis.oracle.com/display/mysql MySQL Forge will EOL on August 1st 2012.

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  • MySQL - Configuration

    - by Stuart Brierley
    Having previously detailed how to install MySQL Server, the next step is configuring MySQL. The MySQL configuration wizard can either be run immediately following installation from the MySQL installation wizard or manually from the Start Menu. Following the splash screen you can then choose whether to run a detailed or standard configuration. The detailed configuration allows you to create the optimal configuration for your specific machine, whereas the standard configuration creates a general configuration that can then be manually tuned. I chose detailed.   You are then asked to choose the type of server instance that is being configured. In this case it is a developer machine. Following this you are asked to choose the type of database usage that you expect on the server. I opted for multifunctional. You must then specify the location of the InnoDB tablespace.   Next specify the number of concurent connections to the server.   Now you must configure the networking options. I left the Strict mode enabled as this is the recommended option, but I disabled TCP/IP networking as I wanted to restrict this MySQL installation to the local machine only.   Set the character set that is best suited to your use - for me this was the default standard character set. Next up is the option to run MySQL as a service and whether or not to include the mysql dircetories in the windows PATH. I kept the install as a windows service option enabled, but unchecked the Launch MySQL server automatically option. This is because I only wanted MySQL running when I specifically want to use it. I also enabled the include in windows PATH option.   You can then change the security settings for the mysql installation. I opted to change the root password, disable root from local machines and disable annoymous access.   You are now ready to execute the configuration.   Once completed you should hopefully see the completed screen with lots of nice ticks against the various configuration tasks.

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  • Where do I put my start up script for mysql?

    - by Neo
    I have created a second instance of MySQL on the server for replication, if I start the process manually it works but need it to start at bootup. I used to just do a bash script in the init.d folder but apparently that no longer works on 11.10 Can anyone point me in the right direction? I even copied the mysql service, changed it and tried that but it refused to work. P.S It is the server edition so only Shell access.

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