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  • Problem while Installing mysql cluster

    - by Champion
    I downloaded latest mysql cluster file 64 bit (mysql-cluster-gpl-7.1.9-linux-x86_64-glibc23) from mysql site. Ran following command to install mysql server. /home/mysql_cluster/mysqlc/scripts/mysql_install_db --no-defaults --basedir=/home/mysql_cluster/mysqlc --datadir=/home/mysql_cluster/my_cluster/mysqld_data It's giving following issues. /home/mysql_cluster/mysqlc/scripts/mysql_install_db: line 245: /home/mysql_cluster/mysqlc/bin/my_print_defaults: No such file or directory Neither host 'db' nor 'localhost' could be looked up with /home/mysql_cluster/mysqlc/bin/resolveip Please configure the 'hostname' command to return a correct hostname. If you want to solve this at a later stage, restart this script with the --force option My host is pinging and hostname command gives correct hostname. I tried also with --force option force but still not working giving following issues: /home/mysql_cluster/mysqlc/scripts/mysql_install_db: line 245: /home/mysql_cluster/mysqlc/bin/my_print_defaults: No such file or directory Installing MySQL system tables... /home/mysql_cluster/mysqlc/scripts/mysql_install_db: line 393: /home/mysql_cluster/mysqlc/bin/mysqld: No such file or directory Installation of system tables failed! Examine the logs in /home/mysql_cluster/my_cluster/mysqld_data for more information. It says above files doesn't exist but this files are present checked with ls command. We are using XEN VM with 64 bit debian lenny os. How this issue can be resolved ?

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  • MYSQL – Detecting Current Version of MySQL Server Installation

    - by Pinal Dave
    Here is one of the most popular questions which I receive which is related to MySQL installation. The question is how do I know which version of the MySQL I have installed on my server. Here is the simple trick which works all the time. Connect to your MySQL engine with the help of Command Prompt or MySQL Workbench. When you execute the following command it will give us all the necessary information related to MySQL Version. SHOW VARIABLES LIKE "%version%"; Here is the screenshot of the result which I receive when I ran above command on my Test Server. Reference : Pinal Dave (http://blog.SQLAuthority.com) Filed under: MySQL, PostADay, SQL, SQL Authority, SQL Query, SQL Tips and Tricks, T SQL

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  • mysql never releases memory

    - by Ishu
    I have a production server clocking about 4 million page views per month. The server has got 8GB of RAM and mysql acts as a database. I am facing problems in handling mysql to take this load. I need to restart mysql twice a day to handle this thing. The problem with mysql is that it starts with some particular occupation, the memory consumed by mysql keeps on increasing untill it reaches the maximum it can consume and then mysql stops responding slowly or does not respond at all, which freezes the server. All my tables are indexed properly and there are no long queries. I need some one to help on how to go about debugging what to do here. All my tables are myisam. I have tried configuring the parameters key_buffer etc but to no rescue. Any sort of help is greatly appreciated. Here are some parameters which may help. mysql --version mysql Ver 14.12 Distrib 5.0.77, for redhat-linux-gnu (i686) using readline 5.1 mysql> show variables; +---------------------------------+------------------------------------------------------------+ | Variable_name | Value | +---------------------------------+------------------------------------------------------------+ | auto_increment_increment | 1 | | auto_increment_offset | 1 | | automatic_sp_privileges | ON | | back_log | 50 | | basedir | /usr/ | | bdb_cache_size | 8384512 | | bdb_home | /var/lib/mysql/ | | bdb_log_buffer_size | 262144 | | bdb_logdir | | | bdb_max_lock | 10000 | | bdb_shared_data | OFF | | bdb_tmpdir | /tmp/ | | binlog_cache_size | 32768 | | bulk_insert_buffer_size | 8388608 | | character_set_client | latin1 | | character_set_connection | latin1 | | character_set_database | latin1 | | character_set_filesystem | binary | | character_set_results | latin1 | | character_set_server | latin1 | | character_set_system | utf8 | | character_sets_dir | /usr/share/mysql/charsets/ | | collation_connection | latin1_swedish_ci | | collation_database | latin1_swedish_ci | | collation_server | latin1_swedish_ci | | completion_type | 0 | | concurrent_insert | 1 | | connect_timeout | 10 | | datadir | /var/lib/mysql/ | | date_format | %Y-%m-%d | | datetime_format | %Y-%m-%d %H:%i:%s | | default_week_format | 0 | | delay_key_write | ON | | delayed_insert_limit | 100 | | delayed_insert_timeout | 300 | | delayed_queue_size | 1000 | | div_precision_increment | 4 | | keep_files_on_create | OFF | | engine_condition_pushdown | OFF | | expire_logs_days | 0 | | flush | OFF | | flush_time | 0 | | ft_boolean_syntax | + -><()~*:""&| | | ft_max_word_len | 84 | | ft_min_word_len | 4 | | ft_query_expansion_limit | 20 | | ft_stopword_file | (built-in) | | group_concat_max_len | 1024 | | have_archive | NO | | have_bdb | YES | | have_blackhole_engine | NO | | have_compress | YES | | have_crypt | YES | | have_csv | NO | | have_dynamic_loading | YES | | have_example_engine | NO | | have_federated_engine | NO | | have_geometry | YES | | have_innodb | YES | | have_isam | NO | | have_merge_engine | YES | | have_ndbcluster | NO | | have_openssl | DISABLED | | have_ssl | DISABLED | | have_query_cache | YES | | have_raid | NO | | have_rtree_keys | YES | | have_symlink | YES | | | init_connect | | | init_file | | | init_slave | | | interactive_timeout | 28800 | | join_buffer_size | 131072 | | key_buffer_size | 2621440000 | | key_cache_age_threshold | 300 | | key_cache_block_size | 1024 | | key_cache_division_limit | 100 | | language | /usr/share/mysql/english/ | | large_files_support | ON | | large_page_size | 0 | | large_pages | OFF | | lc_time_names | en_US | | license | GPL | | local_infile | ON | | locked_in_memory | OFF | | log | OFF | | log_bin | ON | | log_bin_trust_function_creators | OFF | | log_error | | | log_queries_not_using_indexes | OFF | | log_slave_updates | OFF | | log_slow_queries | ON | | log_warnings | 1 | | long_query_time | 8 | | low_priority_updates | OFF | | lower_case_file_system | OFF | | lower_case_table_names | 0 | | max_allowed_packet | 8388608 | | max_binlog_cache_size | 4294963200 | | max_binlog_size | 1073741824 | | max_connect_errors | 10 | | max_connections | 400 | | max_delayed_threads | 20 | | max_error_count | 64 | | max_heap_table_size | 16777216 | | max_insert_delayed_threads | 20 | | max_join_size | 4294967295 | | max_length_for_sort_data | 1024 | | max_prepared_stmt_count | 16382 | | max_relay_log_size | 0 | | max_seeks_for_key | 4294967295 | | max_sort_length | 1024 | | max_sp_recursion_depth | 0 | | max_tmp_tables | 32 | | max_user_connections | 0 | | max_write_lock_count | 4294967295 | | multi_range_count | 256 | | myisam_data_pointer_size | 6 | | myisam_max_sort_file_size | 2146435072 | | myisam_recover_options | OFF | | myisam_repair_threads | 1 | | myisam_sort_buffer_size | 16777216 | | myisam_stats_method | nulls_unequal | | net_buffer_length | 16384 | | net_read_timeout | 30 | | net_retry_count | 10 | | net_write_timeout | 60 | | new | OFF | | old_passwords | OFF | | open_files_limit | 2000 | | optimizer_prune_level | 1 | | optimizer_search_depth | 62 | | pid_file | /var/run/mysqld/mysqld.pid | | plugin_dir | | | port | 3306 | | preload_buffer_size | 32768 | | profiling | OFF | | profiling_history_size | 15 | | protocol_version | 10 | | query_alloc_block_size | 8192 | | query_cache_limit | 1048576 | | query_cache_min_res_unit | 4096 | | query_cache_size | 134217728 | | query_cache_type | ON | | query_cache_wlock_invalidate | OFF | | query_prealloc_size | 8192 | | range_alloc_block_size | 4096 | | read_buffer_size | 2097152 | | read_only | OFF | | read_rnd_buffer_size | 8388608 | | relay_log | | | relay_log_index | | | relay_log_info_file | relay-log.info | | relay_log_purge | ON | | relay_log_space_limit | 0 | | rpl_recovery_rank | 0 | | secure_auth | OFF | | secure_file_priv | | | server_id | 1 | | skip_external_locking | ON | | skip_networking | OFF | | skip_show_database | OFF | | slave_compressed_protocol | OFF | | slave_load_tmpdir | /tmp/ | | slave_net_timeout | 3600 | | slave_skip_errors | OFF | | slave_transaction_retries | 10 | | slow_launch_time | 2 | | socket | /var/lib/mysql/mysql.sock | | sort_buffer_size | 2097152 | | sql_big_selects | ON | | sql_mode | | | sql_notes | ON | | sql_warnings | OFF | | ssl_ca | | | ssl_capath | | | ssl_cert | | | ssl_cipher | | | ssl_key | | | storage_engine | MyISAM | | sync_binlog | 0 | | sync_frm | ON | | system_time_zone | CST | | table_cache | 256 | | table_lock_wait_timeout | 50 | | table_type | MyISAM | | thread_cache_size | 8 | | thread_stack | 196608 | | time_format | %H:%i:%s | | time_zone | SYSTEM | | timed_mutexes | OFF | | tmp_table_size | 33554432 | | tmpdir | /tmp/ | | transaction_alloc_block_size | 8192 | | transaction_prealloc_size | 4096 | | tx_isolation | REPEATABLE-READ | | updatable_views_with_limit | YES | | version | 5.0.77-log | | version_bdb | Sleepycat Software: Berkeley DB 4.1.24: (January 29, 2009) | | version_comment | Source distribution | | version_compile_machine | i686 | | version_compile_os | redhat-linux-gnu | | wait_timeout | 28800 | +---------------------------------+------------------------------------------------------------+

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  • mysql replication 1x master, 1x slave

    - by clarkk
    I have just setup one master and one slave server, but its not working.. On my website I connect to the slave server and I insert some rows, but they do not appear on the master and vice versa.. What is wrong? This is what I did: Master: -> /etc/mysql/my.cnf [mysqld] log-bin = mysql-master-bin server-id=1 # bind-address = 127.0.0.1 binlog-do-db = test_db Slave: -> /etc/mysql/my.cnf [mysqld] log-bin = mysql-slave-bin server-id=2 # bind-address = 127.0.0.1 replicate-do-db = test_db Slave: terminal 0 > mysql> STOP SLAVE; // and drop tables Master: terminal 1 > mysql> CREATE USER 'repl_slave'@'slave_ip' IDENTIFIED BY 'repl_pass'; mysql> GRANT REPLICATION SLAVE ON *.* TO 'repl_slave'@'slave_ip'; mysql> FLUSH PRIVILEGES; mysql> FLUSH TABLES WITH READ LOCK; -- leave terminal open terminal 2 > shell> mysqldump -u root -pPASSWORD test_db --lock-all-tables > dump.sql mysql> SHOW MASTER STATUS; Slave: terminal 3 > shell> mysql -u root -pPASSWORD test_db < dump.sql terminal 0 > mysql> CHANGE MASTER TO mysql> MASTER_HOST='master_ip', mysql> MASTER_USER='repl_slave', mysql> MASTER_PASSWORD='repl_pass', mysql> MASTER_PORT=3306, mysql> MASTER_LOG_FILE='mysql-master-bin.000003', // terminal 2 > SHOW MASTER STATUS mysql> MASTER_LOG_POS=4, // terminal 2 > SHOW MASTER STATUS mysql> MASTER_CONNECT_RETRY=10; mysql> START SLAVE; mysql> SHOW SLAVE STATUS; Here is the slave status: Array ( [Slave_IO_State] => Waiting for master to send event [Master_Host] => xx.xx.xx.xx [Master_User] => repl_slave [Master_Port] => 3306 [Connect_Retry] => 10 [Master_Log_File] => mysql-master-bin.000003 [Read_Master_Log_Pos] => 106 [Relay_Log_File] => mysqld-relay-bin.000002 [Relay_Log_Pos] => 258 [Relay_Master_Log_File] => mysql-master-bin.000003 [Slave_IO_Running] => Yes [Slave_SQL_Running] => Yes [Replicate_Do_DB] => test_db [Replicate_Ignore_DB] => [Replicate_Do_Table] => [Replicate_Ignore_Table] => [Replicate_Wild_Do_Table] => [Replicate_Wild_Ignore_Table] => [Last_Errno] => 0 [Last_Error] => [Skip_Counter] => 0 [Exec_Master_Log_Pos] => 106 [Relay_Log_Space] => 414 [Until_Condition] => None [Until_Log_File] => [Until_Log_Pos] => 0 [Master_SSL_Allowed] => No [Master_SSL_CA_File] => [Master_SSL_CA_Path] => [Master_SSL_Cert] => [Master_SSL_Cipher] => [Master_SSL_Key] => [Seconds_Behind_Master] => 0 [Master_SSL_Verify_Server_Cert] => No [Last_IO_Errno] => 0 [Last_IO_Error] => [Last_SQL_Errno] => 0 [Last_SQL_Error] => )

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  • vb.net string concatenation string + function output + string = string + function output and no more

    - by Barfieldmv
    The following output produces a string with no closing xml tag. m_rFlight.Layout = m_rFlight.Layout + "<G3Grid:Spots>" + Me.gvwSpots.LayoutToString() + "</G3Grid:Spots>" This following code works correctly m_rFlight.Layout = m_rFlight.Layout + "<G3Grid:Spots>" + Me.gvwSpots.LayoutToString() m_rFlight.Layout = m_rFlight.Layout + "</G3Grid:Spots>" 'add closing tag What's going on here, what's the reason the first example isnt working and the second is? The gvwSpots.LayoutToString() function returns a string.

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  • MySQL Connect Content Catalog Live

    - by Bertrand Matthelié
    The MySQL Connect Content Catalog is now live and you can check out the great program the content committee put together for you. We received a lot of very good submissions during the call for papers and we’d like to thank you all again for those, it was a very difficult job to choose. Overall MySQL Connect will in two days include: Keynotes, with speakers such as Oracle Chief Corporate Architect Edward Screven and Vice President of MySQL Engineering Tomas Ulin 66 conference sessions, enabling you to hear from: Oracle engineers on MySQL 5.6 new features, InnoDB, performance and scalability, security, NoSQL, MySQL Cluster…and more MySQL users and customers including Facebook, Twitter, PayPal, Yahoo, Ticketmaster, and CERN Internationally recognized MySQL community members and partners on topics such as performance, security or high availability 6 Birds-of-a-feather sessions, in which you’ll be able to engage into passionate discussions about replication, backup and other subjects, and help influence the MySQL roadmap 8 Hands-On Labs designed to give you hands-on experience about MySQL replication, MySQL Cluster, the MySQL Performance Schema…and more Demo pods about MySQL Workbench, MySQL Cluster, MySQL Enterprise Edition and other technologies and services We’ll also have networking receptions on both Saturday and Sunday evening, enabling you to discuss with the Oracle engineers developing and supporting the MySQL products, as well as with other users and customers. Additionally, you’ll have the opportunity to meet and learn from our partners in the exhibition hall. Some of the MySQL Connect speakers such as Henrik Ingo and Andrew Morgan have already blogged about their presence at MySQL Connect, and you can find more information about their sessions or their thoughts about the conference in their blogs. We also published an interview with Tomas Ulin a few weeks ago. In summary, don’t miss MySQL Connect! And you only have about 3 weeks left to register with the early bird discount and save US$500. Don’t wait, Register Now! Interested in sponsorship and exhibit opportunities? You will find more information here.

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  • Installing mysql-server on 10.04LTS gives "404 Not Found" error

    - by bc1
    Hi I am trying to install mysql on Ubuntu 10.04LTS (Lucid Lynx) and I am getting this error. Is this a server side issue - is the server up? I am running this from the command line on a remote server... sudo apt-get install mysql-server Reading package lists... Done Building dependency tree Reading state information... Done The following extra packages will be installed: libdbd-mysql-perl libdbi-perl libhtml-template-perl libmysqlclient16 libnet-daemon-perl libplrpc-perl mysql-client-5.1 mysql-client-core-5.1 mysql-common mysql-server-5.1 mysql-server-core-5.1 psmisc Suggested packages: dbishell libipc-sharedcache-perl tinyca mailx The following NEW packages will be installed: libdbd-mysql-perl libdbi-perl libhtml-template-perl libmysqlclient16 libnet-daemon-perl libplrpc-perl mysql-client-5.1 mysql-client-core-5.1 mysql-common mysql-server mysql-server-5.1 mysql-server-core-5.1 psmisc 0 upgraded, 13 newly installed, 0 to remove and 85 not upgraded. Need to get 23.2MB/24.3MB of archives. After this operation, 61.7MB of additional disk space will be used. Do you want to continue [Y/n]? Y Err http://archive.ubuntu.com/ubuntu/ lucid-updates/main mysql-common 5.1.62-0ubuntu0.10.04.1 404 Not Found [IP: 91.189.92.192 80] <more of the same error messages here> Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/m/mysql-dfsg-5.1/mysql-common_5.1.62-0ubuntu0.10.04.1_all.deb 404 Not Found [IP: 91.189.92.166 80] <more of the same error messages here> E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?

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  • Problem after mysql-server installation I cant install any thing in ubuntu 12.04.1 now

    - by mohammed ezzi
    I'm not an advanced user of Linux and I tried to install work with database so I installed Mysql-server, I think I did same thing wrong so I get in trouble and now I cant install any thing and this what I get when I use apt-get -f install : root@me:~# apt-get -f install Reading package lists... Done Building dependency tree Reading state information... Done Correcting dependencies... Done The following extra packages will be installed: mysql-server mysql-server-5.5 Suggested packages: tinyca mailx The following packages will be upgraded: mysql-server mysql-server-5.5 2 upgraded, 0 newly installed, 0 to remove and 194 not upgraded. 2 not fully installed or removed. Need to get 0 B/8,737 kB of archives. After this operation, 15.4 kB of additional disk space will be used. Do you want to continue [Y/n]? y dpkg: dependency problems prevent configuration of mysql-server-5.5: mysql-server-5.5 depends on mysql-server-core-5.5 (= 5.5.24-0ubuntu0.12.04.1); however: Version of mysql-server-core-5.5 on system is 5.5.28-0ubuntu0.12.04.3. dpkg: error processing mysql-server-5.5 (--configure): dependency problems - leaving unconfigured No apport report written because MaxReports is reached already dpkg: dependency problems prevent configuration of mysql-server: mysql-server depends on mysql-server-5.5; however: Package mysql-server-5.5 is not configured yet. dpkg: error processing mysql-server (--configure): dependency problems - leaving unconfigured No apport report written because MaxReports is reached already Errors were encountered while processing: mysql-server-5.5 mysql-server E: Sub-process /usr/bin/dpkg returned an error code (1) I tried to remove mysql-server but nothing happened.

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  • A Successful OTN MySQL Developer Day in Paris

    - by Bertrand Matthelié
    @font-face { font-family: "Arial"; }@font-face { font-family: "Cambria"; }p.MsoNormal, li.MsoNormal, div.MsoNormal { margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman"; }div.Section1 { page: Section1; } On Wednesday this week Oracle held its first MySQL Developer Day in France. The room was packed with close to 100 people eager to learn more about MySQL. @font-face { font-family: "Arial"; }@font-face { font-family: "Cambria"; }p.MsoNormal, li.MsoNormal, div.MsoNormal { margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman"; }div.Section1 { page: Section1; } We got great feedback from the attendees who could hear about the new MySQL Cluster 7.2 features, NoSQL Access to MySQL and MySQL Cluster, MySQL performance tuning in MySQL 5.5 and in MySQL 5.6…and more. Sessions included MySQL Essentials MySQL Replication and Scalability Developing MySQL Applications with Java and PHP MySQL Cluster Testing early releases of MySQL in a sandbox (by guest speaker and Oracle ACE Director for MySQL Giuseppe Maxia) MySQL Performance Tuning MySQL Enterprise Edition Management Tools Developing MySQL applications for ISVs & OEMs Thank you to all attendees for your active participation, and to all speakers for great and engaging presentations! More OTN MySQL Developer Days to come…stay tuned.

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  • Total newb having SSH and remote MySQL access problems

    - by kscott
    I don't often work with linux or need to SSH into remote MySQL databases, so pardon my ignorance. For months I had been using the HeidiSQL client application to remotely access a MySQL database. Today two things happened: the DB moved to a new server and I updated HeidiSQL, now I cannot log in to the MySQL server, when attempting I get this message from Heidi: SQL Error (2003) in statement #0: Can't connect to MySQL server on 'localhost' (10061) If I use Putty, I can connect to the server and get MySQL access through command line, including fetching data from the DB. I assume this means my credentials and address are correct, but do not understand why putting those same details into HeidiSQL's SSH tunnel info won't work. I also downloaded the MySQL Workbench and attempted to set up a connection through that client and got this message: Cannot Connect to Database Server Your connection attempt failed for user 'myusername' from your host to server at localhost:3306: Lost connection to MySQL server at 'reading initial communication packet', system error: 0 Please: 1 Check that mysql is running on server localhost 2 Check that mysql is running on port 3306 (note: 3306 is the default, but this can be changed) 3 Check the myusername has rights to connect to localhost from your address (mysql rights define what clients can connect to the server and from which machines) 4 Make sure you are both providing a password if needed and using the correct password for localhost connecting from the host address you're connecting from From Googling around I see that it could be related to the MySQL bind-address, but I am a third party sub-contractor with no access to the MySQL settings of this box and the system admin is assuring me that I'm an idiot and need to figure it out on my end. This is completely possible but I don't know what else to try. Edit 1 - The client settings I am using In Heidi and MySQL Workbench I am using the following: SSH host + port: theHostnameOfTheRemoteServer.com:22 {this is the same host I can Putty to} SSH Username: mySSHusername {the same user name I use for my Putty connection} SSH Password: mySSHpassword {the same password for the Putty connection} Local port: 3307 MySQL host: theHostnameOfTheRemoteServer.com MySQL User: mySQLusername {which I can connect with once in with Putty} MySQL Password: mySQLpassword {which works once in with Putty} Port: 3306

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  • MySQL Workbench is not finding MySQL service? [closed]

    - by PhADDinTraining
    I set up a local MySQL server, currently with no databases. I'm trying to create a new server instance profile in MySQL Workbench to manage the server, and during the Create New Server Instance Profile wizard, it gets to the Windows Management section and tells me that No MySQL service found. I went into Task Manager and found the process mysqld.exe to be running, under the user name of NETWORK SERVICE. Then I went into the Services tab and found that MySQLServerName (I custom named the Windows service) is also there, and status is running. I ran cports and looked at what ports mysqld.exe is using, and ran a telnet command on that port. It's reporting that the port is being listened in on. I then ran the MySQL Command Line Client to be sure, and after \r it gives me a proper connection ID and a list of databases (NONE at this point). But with all this, I can't make the wizard find a running service. I've Googled this and found no answers, so please, if someone would help shed some light on this issue that'd be great!

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  • Cannot reinstall MySql in 11.10 - ERROR: There's not enough space in /var/lib/mysql/

    - by Robin McCain
    I've tried it all (removing all the packages associated with MySQL) but keep getting stuff like this: Preconfiguring packages ... (Reading database ... 142196 files and directories currently installed.) Unpacking mysql-server-5.1 (from .../mysql-server-5.1_5.1.63-0ubuntu0.11.10.1_amd64.deb) ... ERROR: There's not enough space in /var/lib/mysql/ dpkg: error processing /var/cache/apt/archives/mysql-server-5.1_5.1.63-0ubuntu0.11.10.1_amd64.deb (--unpack): subprocess new pre-installation script returned error exit status 1 Errors were encountered while processing: /var/cache/apt/archives/mysql-server-5.1_5.1.63-0ubuntu0.11.10.1_amd64.deb E: Sub-process /usr/bin/dpkg returned an error code (1) Here is my drive space map. root@kyle:/# df Filesystem 1K-blocks Used Available Use% Mounted on /dev/mapper/kyle-root 59361428 59021768 0 100% / udev 1014052 8 1014044 1% /dev tmpfs 409304 1476 407828 1% /run none 5120 0 5120 0% /run/lock none 1023256 0 1023256 0% /run/shm /dev/sda1 233191 46888 173862 22% /boot /dev/md0 1922858288 1048513192 776669500 58% /media/array The root volume actually only has about 10 gigabytes in use on the hard drive (which has a 60 gig partition). /dev/md0 is a 2 TB raid array.

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  • MySQL – How to Write Loop in MySQL

    - by Pinal Dave
    Since, I have written courses on MySQL, I quite often get emails about MySQL courses. Here is the question, which I have received quite often. “How do I loop queries in MySQL?” Well, currently MySQL does not allow to write loops with the help of ad-hoc SQL. You have to write stored procedure (routine) for the same. Here is the example, how we can create a procedure in MySQL which will look over the code. In this example I have used SELECT 1 statement and looped over it. In reality you can put there any code and loop over it. This procedure accepts one parameter which is the number of the count the loop will iterate itself. delimiter // CREATE PROCEDURE doiterate(p1 INT) BEGIN label1: LOOP SET p1 = p1 - 1; IF p1 > 0 THEN SELECT 1; ITERATE label1; END IF; LEAVE label1; END LOOP label1; END// delimiter ; CALL doiterate(100); You can also use WHILE to loop as well, we will see that in future blog posts. Reference: Pinal Dave (http://blog.sqlauthority.com)Filed under: MySQL, PostADay, SQL, SQL Authority, SQL Query, SQL Tips and Tricks, T SQL

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  • Remove accents from String .NET

    - by developerit
    Private Const ACCENT As String = “ÀÁÂÃÄÅàáâãäåÒÓÔÕÖØòóôõöøÈÉÊËèéêëÌÍÎÏìíîïÙÚÛÜùúûüÿÑñÇç” Private Const SANSACCENT As String = “AAAAAAaaaaaaOOOOOOooooooEEEEeeeeIIIIiiiiUUUUuuuuyNnCc” Public Shared Function FormatForUrl(ByVal uriBase As String) As String If String.IsNullOrEmpty(uriBase) Then Return uriBase End If ‘// Declaration de variables Dim chaine As String = uriBase.Trim.Replace(” “, “-”) chaine = chaine.Replace(” “c, “-”c) chaine = chaine.Replace(“–”, “-”) chaine = chaine.Replace(“‘”c, String.Empty) chaine = chaine.Replace(“?”c, String.Empty) chaine = chaine.Replace(“#”c, String.Empty) chaine = chaine.Replace(“:”c, String.Empty) chaine = chaine.Replace(“;”c, String.Empty) ‘// Conversion des chaines en tableaux de caractŠres Dim tableauSansAccent As Char() = SANSACCENT.ToCharArray Dim tableauAccent As Char() = ACCENT.ToCharArray ‘// Pour chaque accent For i As Integer = 0 To ACCENT.Length – 1 ‘ // Remplacement de l’accent par son ‚quivalent sans accent dans la chaŒne de caractŠres chaine = chaine.Replace(tableauAccent(i).ToString(), tableauSansAccent(i).ToString()) Next ‘// Retour du resultat Return chaine End Function

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  • yum update failed

    - by Nemanja Djuric
    I have problem doint yum update on my OpenVZ VPS i get this error message : (56/69): glibc-devel-2.5-81.el5_8.7.x86_64.rpm | 2.4 MB 00:00 (57/69): libstdc++-devel-4.1.2-52.el5_8.1.x86_64.rpm | 2.8 MB 00:00 (58/69): binutils-2.17.50.0.6-20.el5_8.3.x86_64.rpm | 2.9 MB 00:00 (59/69): cpp-4.1.2-52.el5_8.1.x86_64.rpm | 2.9 MB 00:00 (60/69): device-mapper-multipath-0.4.7-48.el5_8.1.x86_64 | 3.0 MB 00:00 (61/69): mysql-5.1.58-jason.1.x86_64.rpm | 3.5 MB 00:03 (62/69): coreutils-5.97-34.el5_8.1.x86_64.rpm | 3.6 MB 00:00 (63/69): gcc-c++-4.1.2-52.el5_8.1.x86_64.rpm | 3.8 MB 00:00 (64/69): glibc-2.5-81.el5_8.7.x86_64.rpm | 4.8 MB 00:01 (65/69): gcc-4.1.2-52.el5_8.1.x86_64.rpm | 5.3 MB 00:01 (66/69): glibc-2.5-81.el5_8.7.i686.rpm | 5.4 MB 00:01 (67/69): python-libs-2.4.3-46.el5_8.2.x86_64.rpm | 5.9 MB 00:01 (68/69): mysql-server-5.1.58-jason.1.x86_64.rpm | 13 MB 00:07 (69/69): glibc-common-2.5-81.el5_8.7.x86_64.rpm | 16 MB 00:03 -------------------------------------------------------------------------------- Total 2.4 MB/s | 106 MB 00:44 Running rpm_check_debug Running Transaction Test Finished Transaction Test Transaction Check Error: file /etc/my.cnf from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.77-4.el5_6.6.i386 file /usr/bin/mysqlaccess from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.77-4.el5_6.6.i386 file /usr/share/man/man1/my_print_defaults.1.gz from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.77-4.el5_6.6.i386 file /usr/share/man/man1/mysql.1.gz from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.77-4.el5_6.6.i386 file /usr/share/man/man1/mysql_config.1.gz from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.77-4.el5_6.6.i386 file /usr/share/man/man1/mysql_find_rows.1.gz from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.77-4.el5_6.6.i386 file /usr/share/man/man1/mysql_waitpid.1.gz from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.77-4.el5_6.6.i386 file /usr/share/man/man1/mysqlaccess.1.gz from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.77-4.el5_6.6.i386 file /usr/share/man/man1/mysqladmin.1.gz from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.77-4.el5_6.6.i386 file /usr/share/man/man1/mysqldump.1.gz from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.77-4.el5_6.6.i386 file /usr/share/man/man1/mysqlshow.1.gz from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.77-4.el5_6.6.i386 file /usr/share/mysql/charsets/Index.xml from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.77-4.el5_6.6.i386 file /usr/share/mysql/charsets/cp1250.xml from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.77-4.el5_6.6.i386 file /usr/share/mysql/charsets/cp1251.xml from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.77-4.el5_6.6.i386 file /usr/share/mysql/czech/errmsg.sys from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.77-4.el5_6.6.i386 file /usr/share/mysql/danish/errmsg.sys from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.77-4.el5_6.6.i386 file /usr/share/mysql/dutch/errmsg.sys from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.77-4.el5_6.6.i386 file /usr/share/mysql/english/errmsg.sys from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.77-4.el5_6.6.i386 file /usr/share/mysql/estonian/errmsg.sys from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.77-4.el5_6.6.i386 file /usr/share/mysql/french/errmsg.sys from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.77-4.el5_6.6.i386 file /usr/share/mysql/german/errmsg.sys from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.77-4.el5_6.6.i386 file /usr/share/mysql/greek/errmsg.sys from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.77-4.el5_6.6.i386 file /usr/share/mysql/hungarian/errmsg.sys from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.77-4.el5_6.6.i386 file /usr/share/mysql/italian/errmsg.sys from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.77-4.el5_6.6.i386 file /usr/share/mysql/japanese/errmsg.sys from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.77-4.el5_6.6.i386 file /usr/share/mysql/korean/errmsg.sys from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.77-4.el5_6.6.i386 file /usr/share/mysql/norwegian-ny/errmsg.sys from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.77-4.el5_6.6.i386 file /usr/share/mysql/norwegian/errmsg.sys from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.77-4.el5_6.6.i386 file /usr/share/mysql/polish/errmsg.sys from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.77-4.el5_6.6.i386 file /usr/share/mysql/portuguese/errmsg.sys from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.77-4.el5_6.6.i386 file /usr/share/mysql/romanian/errmsg.sys from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.77-4.el5_6.6.i386 file /usr/share/mysql/russian/errmsg.sys from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.77-4.el5_6.6.i386 file /usr/share/mysql/serbian/errmsg.sys from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.77-4.el5_6.6.i386 file /usr/share/mysql/slovak/errmsg.sys from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.77-4.el5_6.6.i386 file /usr/share/mysql/spanish/errmsg.sys from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.77-4.el5_6.6.i386 file /usr/share/mysql/swedish/errmsg.sys from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.77-4.el5_6.6.i386 file /usr/share/mysql/ukrainian/errmsg.sys from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.77-4.el5_6.6.i386 file /etc/my.cnf from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.95-1.el5_7.1.i386 file /usr/bin/mysql_find_rows from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.95-1.el5_7.1.i386 file /usr/bin/mysqlaccess from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.95-1.el5_7.1.i386 file /usr/share/man/man1/my_print_defaults.1.gz from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.95-1.el5_7.1.i386 file /usr/share/man/man1/mysql.1.gz from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.95-1.el5_7.1.i386 file /usr/share/man/man1/mysql_config.1.gz from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.95-1.el5_7.1.i386 file /usr/share/man/man1/mysql_find_rows.1.gz from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.95-1.el5_7.1.i386 file /usr/share/man/man1/mysql_waitpid.1.gz from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.95-1.el5_7.1.i386 file /usr/share/man/man1/mysqlaccess.1.gz from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.95-1.el5_7.1.i386 file /usr/share/man/man1/mysqladmin.1.gz from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.95-1.el5_7.1.i386 file /usr/share/man/man1/mysqldump.1.gz from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.95-1.el5_7.1.i386 file /usr/share/man/man1/mysqlshow.1.gz from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.95-1.el5_7.1.i386 file /usr/share/mysql/charsets/Index.xml from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.95-1.el5_7.1.i386 file /usr/share/mysql/charsets/cp1250.xml from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.95-1.el5_7.1.i386 file /usr/share/mysql/charsets/cp1251.xml from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.95-1.el5_7.1.i386 file /usr/share/mysql/czech/errmsg.sys from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.95-1.el5_7.1.i386 file /usr/share/mysql/danish/errmsg.sys from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.95-1.el5_7.1.i386 file /usr/share/mysql/dutch/errmsg.sys from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.95-1.el5_7.1.i386 file /usr/share/mysql/english/errmsg.sys from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.95-1.el5_7.1.i386 file /usr/share/mysql/estonian/errmsg.sys from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.95-1.el5_7.1.i386 file /usr/share/mysql/french/errmsg.sys from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.95-1.el5_7.1.i386 file /usr/share/mysql/german/errmsg.sys from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.95-1.el5_7.1.i386 file /usr/share/mysql/greek/errmsg.sys from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.95-1.el5_7.1.i386 file /usr/share/mysql/hungarian/errmsg.sys from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.95-1.el5_7.1.i386 file /usr/share/mysql/italian/errmsg.sys from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.95-1.el5_7.1.i386 file /usr/share/mysql/japanese/errmsg.sys from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.95-1.el5_7.1.i386 file /usr/share/mysql/korean/errmsg.sys from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.95-1.el5_7.1.i386 file /usr/share/mysql/norwegian-ny/errmsg.sys from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.95-1.el5_7.1.i386 file /usr/share/mysql/norwegian/errmsg.sys from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.95-1.el5_7.1.i386 file /usr/share/mysql/polish/errmsg.sys from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.95-1.el5_7.1.i386 file /usr/share/mysql/portuguese/errmsg.sys from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.95-1.el5_7.1.i386 file /usr/share/mysql/romanian/errmsg.sys from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.95-1.el5_7.1.i386 file /usr/share/mysql/russian/errmsg.sys from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.95-1.el5_7.1.i386 file /usr/share/mysql/serbian/errmsg.sys from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.95-1.el5_7.1.i386 file /usr/share/mysql/slovak/errmsg.sys from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.95-1.el5_7.1.i386 file /usr/share/mysql/spanish/errmsg.sys from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.95-1.el5_7.1.i386 file /usr/share/mysql/swedish/errmsg.sys from install of mysql-5.1.58-jason.1.x86_64 conflicts with file from package mysql-5.0.95-1.el5_7.1.i386 file /usr/share/mysql/ukrainian/errmsg.sys from install of mysql-5.1.58- jason.1.x86_64 conflicts with file from package mysql-5.0.95-1.el5_7.1.i386 Error Summary Thank you for help, Best regards, Nemanja

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  • MySQL Workbench will not open on my Ubuntu 12.04

    - by Voidcode
    I have install mysql-workbench version 5.2.38+dfsg-3 via Ubuntu Software Center on my Ubuntu 12.04 laptop for some week ago, This work fine until now! Now when I press in the mysql-workbench icon in the Unity lanuncher, It just start opening and then nothing happens :( If I try start it via the terminal: I get this: http://paste.ubuntu.com/1004428/ UPDATE: I can open it via: sudo mysql-workbench But then is can save my passwords.. it says: voidcode@voidcode-Aspire-5750:~$ sudo mysql-workbench [sudo] password for voidcode: ** Message: Gnome keyring daemon seems to not be available. Stored passwords will be lost once quit Ready.

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  • Central Banks Rely On MySQL Based Simulator

    - by bertrand.matthelie(at)oracle.com
    @font-face { font-family: "Arial"; }@font-face { font-family: "Courier New"; }@font-face { font-family: "Wingdings"; }@font-face { font-family: "Calibri"; }@font-face { font-family: "Cambria"; }@font-face { font-family: "Garamond"; }p.MsoNormal, li.MsoNormal, div.MsoNormal { margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman"; }a:link, span.MsoHyperlink { color: blue; text-decoration: underline; }a:visited, span.MsoHyperlinkFollowed { color: purple; text-decoration: underline; }span.description { }div.Section1 { page: Section1; }ol { margin-bottom: 0cm; }ul { margin-bottom: 0cm; } We recently published a case study describing how central banks worldwide rely on the Bank of Finland's MySQL based simulator.   The Bank of Finland (BoF) acts as Finland's central bank, national monetary authority, and member of the European System of Central Banks and the Eurosystem. The BoF developed a MySQL based versatile system for making payments and settlement simulations, used for analyzing liquidity needs, risk issues, changes in authority policies & regulations, and more. Running on Windows, the application has been widely adopted by central bank economists worldwide.   The Simulator is managing large data sets and thus needed a robust database as its foundation. Key requirements to select the database included:   ·       Low Costs ·       Performance & Scalability ·       Ease of Use   You can read more about why the Bank of Finland selected MySQL to power its economic simulator in our case study, posted here.   For more information about MySQL on Windows, check out our MySQL on Windows Resource Center, and, join today's Oracle TechCast Live: "MySQL 5.5 Does Windows" with Mike Frank at 10.00 am PT!

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  • What's New in 5.6 RC and more from MySQL Connect conference

    - by Rob Young
    Keeping with the tradition of great MySQL Community events, the first annual MySQL Connect conference is now in the books.  It was great to see so many familiar faces in the crowd and at the podium sharing their ideas and thoughts on the evolution of MySQL under Oracle. The headliner of the conference was Tomas' keynote announcement of the fully featured and fully enabled MySQL 5.6 Release Candidate.  This new article on the MySQL DevZone summarizes all of the great new features ready for Community adoption, all MySQL Engineering blogs and where and how to download all of the bits. As always, early adoption and feedback on the 5.6 RC is appreciated and the sooner we get your feedback the sooner we release the "ready for production" sanctioned GA product.    Also available now, Cluster 7.3 provides support for Foreign Keys, node.js NoSQL access to underlying data and a new Auto Installer that helps you quickly and easily get up and running with Cluster 7.2 and 7.3.  The 7.3 downloads are provided in the first 7.3 Development Milestone Release (under "Development Releases" tab) and via the MySQL Labs. Oracle also announced key new additions to MySQL Enterprise Edition: New policy-based compliance Auditing. MySQL Enterprise Edition Audit adds policy-based auditing compliance to existing MySQL applications without the need to change any code.  This new plugin is available for MySQL 5.5.28 and higher; existing MySQL Enterprise Edition customers can download the upgrade from the My Oracle Support portal and all can download for evaluation from Oracle's Software Delivery Cloud. New MySQL Enterprise High Available additions provide even more options for ensuring MySQL applications remain available and running a their peak: Oracle Linux + DRBD Oracle Solaris Clustering for MySQL All in all, the first MySQL Connect conference was a great success and with refinements planned in response to attendee, sponsor and speaker feedback we expect it to grow and improve going forward. As always, thanks for your continued support of MySQL!

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  • MySQL Policy-Based Auditing Webinar Recording Now Availabile

    - by Rob Young
    For those who missed the live event, the recording of the "How to Add Policy-Based Auditing to your MySQL Applications" webinar is now available.  You can view it here. This presentation builds on my earlier blog post on MySQL Enterprise Audit that was announced at MySQL Connect in late September.  The web presentation expands on the introductory blog and covers: The regulatory problem to be solved (internal audit, PCI, Sarbanes-Oxley, HIPAA, others) MySQL Audit solutions for both Community and Enterprise users: General Log - use the basic features of the MySQL server MySQL 5.5 open audit API - or use your time and talent to build your own solution MySQL Enterprise Audit - or use the out of the box, ready for production solution from MySQL Simple, step-by-step process for installing, enabling and configuring the MySQL Enterprise Audit plugin for use with existing apps New variables and options for tuning the MySQL Enterprise Audit plugin for your specific use case Best practices for securing and managing audit log files and archived images Roadmap for adding an integrated solution around MySQL Enterprise Audit for MySQL only and Oracle/MySQL shops You can learn all the technical details on MySQL Enterprise Audit in the MySQL docs and learn all about MySQL Enterprise Edition and Auditing here. As always, thanks for your support of MySQL!

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  • MYSQL – Identifying Current Version of MySQL Server Installation – Part 2

    - by Pinal Dave
    Earlier I wrote an article about Detecting Current Version of MySQL Server Installation. After the post quite a few emails I received where various users suggested that there are many more ways to figure out the version of MySQL. Here are few of the methods which I received in the email. Method 1: This method retrieves value with the help of Information Functions. SELECT VERSION(); Method 2: This method is very similar to SQL Server. SELECT @@Version Method 3: You can connect to MySQL with command prompt and type following command: STATUS; Method 4: Please refer my earlier blog post. SHOW VARIABLES LIKE "%version%"; Let me know if you know any more method and I will extend this blog post. Reference : Pinal Dave (http://blog.SQLAuthority.com)Filed under: MySQL, PostADay, SQL, SQL Authority, SQL Query, SQL Tips and Tricks, T SQL

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  • MySQL – Video Course – MySQL Backup and Recovery Fundamentals

    - by Pinal Dave
    Data is the one of the most crucial things for any organization and keeping data safe is the biggest challenge for any DBA. This is true for any organizations. Think about the scenario that you have a database which is extremely important and suddenly you accidently delete the most important table from that database. I am sure this is a very difficult time. In times like this people often get stressed or just make even second mistake. In my career of 10 years I have done often this mistake and often got stressed out due to un-availability of the database backup. In the SQL Server field, we have plenty of the help on this subject, but in MySQL domain there is not enough help. For the same reason I have build this MySQL course on Backup and Recovery. Course Outline Data is very important to any application and business. It is very important that every business plan for data safety. Database backup strategies are often discussed after the disaster has already happened. In this introductory course we will explore a few of the basic backup strategies every business should implement for data safely. We will explore how we can recover our server quickly after any unfriendly incident to our MySQL database. Click to View Course Here are various important aspects which we have discussed in this course. How to take backup of single database? How to take backup of multiple database? How to backup various database objects? How to restore a single database? How to restore multiple databases? How to use MySQL Workbench for Backup and Restore? How to restore Point in Time for any database? What is the best time to backup? How to copy database from one server to another server? All of the above concepts and many more subjects are covered in the MySQL Backup and Recovery Fundamentals course. It is available on Pluralsight. Scenarios As learning about Backup and Recovery can be very much boring, I decided to create two fictitious characters and demonstrate the entire course based on their conversation. The story is about Mike and Rahul. Mike is Sr. Database administrator in USA and Rahul is an intern in India. Rahul aspires to become a senior database administrator and this is a story about his challenges and how he overcomes those challenges. I had a great time to build this course and I have got very good feedback on this course. I encourage all of you to attempt to learn MySQL Backup and Recovery Fundamental course with this innovative effort. It will be very valuable to know your feedback. You will need a valid Pluralsight subscription to watch this course. Reference: Pinal Dave (http://blog.sqlauthority.com)Filed under: MySQL, PostADay, SQL, SQL Authority, SQL Backup and Restore, SQL Query, SQL Tips and Tricks, T SQL

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  • MySQL – Beginning Temporary Tables in MySQL

    - by Pinal Dave
    MySQL supports Temporary tables to store the resultsets temporarily for a given connection. Temporary tables are created with the keyword TEMPORARY along with the CREATE TABLE statement. Let us create the temporary table named Temp CREATE TEMPORARY TABLE TEMP (id INT); Now you can find out the column names using DESC command DESC TEMP; The above returns the following result This table can be accessed only for the current connection and it can be used like a permanent table and automatically dropped when the connection is closed. However, you can not find temporary tables using INFORMATION_SCHEMA. TABLES system view. It will only list out the permanent tables. MySQL usually stores the data of temporary tables in memory and processed by Memory Storage engine. But if the data size is too large MySQL automatically converts this to the on – disk table and use MyISAM engine. You can also create a permanent table with the same name of a temporary table in the same connection. However the structure of permanent table is visible only if the temporary table with the same name is dropped. Let us create a permanent table with the same name Temp as below CREATE TABLE TEMP (id INT, names VARCHAR(100)); Now running the following command stills gives you the structure of the temporary table temp created earlier. DESC TEMP; You can drop the temporary table using DROP TEMPORARY TABLE command; DROP TEMPORARY TABLE TEMP; After you executed the temporary table, run the following command DESC TEMP; Now you will see the structure of the permanent table named temp In summary – If there is a Temporary Table in MySQL it gets first priority over the permanent table in the session. Reference: Pinal Dave (http://blog.sqlauthority.com)Filed under: MySQL, PostADay, SQL, SQL Authority, SQL Query, SQL Tips and Tricks, T SQL

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  • Real Time BI in the Real World

    - by tobin.gilman(at)oracle.com
    Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 /* 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-qformat:yes; 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:"Times New Roman","serif";} Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 /* 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-qformat:yes; 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:"Times New Roman","serif"; mso-fareast-font-family:"Times New Roman";} One of my favorite BI offerings from Oracle is a solution called Oracle Real Time Decisions.  Whenever I mention this product in customer meetings, eyes light up.  There are some fascinating examples of customers using it to up-sell, cross-sell, increase customer retention, and reduce risk in real time, with off the charts return on investment. I plan to share some of those stories in a future blog.  In this post however, I want to share some far more common real time analytics use case scenarios that are being addressed with widely deployed Oracle BI and data integration technologies Not all real time BI applications require continuous learning, predictive modeling, and data mining.  Many simply require the ability to integrate, aggregate, and access information that is current (typically within in few minutes or a few seconds).  The use cases are infinite.  A few I've seen: ·         Purchasing agents need to match demand against available inventory ·         Manufacturing planners need to monitor current parts and material against scheduled build plans ·         Airline agents need to match ticket demand against flight schedules, ·         Human resources managers need to track the status of global hiring requisitions against current headcount authorizations...you get the idea. One way of doing this is to run reports or federated queries directly against transactional systems.  That approach can be viable if you only need to access simple data sets on rare occasions.  High volume and complex queries can quickly bog down performance of mission critical transactional systems.  There is an architecturally simple way of solving the problem, and it's being applied by real companies around the world to solve real needs in real time.    Cbeyond is an Atlanta, GA based  provider of voice, data and mobile business applications delivers.  They deliver real time information to its call center agents  as they are interacting with their customers. The data they need resides in production CRM and other transactional systems, but  instead or reporting directly off the those systems, data is first moved to an operational data store (ODS).  Rather than running data intensive, time consuming, and performance degrading batch ETL routines to populate the ODS, Cbeyond uses Oracle Golden Gate software to incrementally capture and move only the changed records from log files of the transactional systems every few minutes.  There is no impact on transactional system performance, and the information needed by call center representatives is up to date.  Oracle Business Intelligence software presents the information to services reps in a rich, visual, and highly interactive format. Avea is similar to Cbeyond.  They are a telecommunications company who integrates billing and customer information in an ODS that is accessed by their call center agents in real time using Oracle Golden Gate and Oracle Business Intelligence.  They've taken it a step further by using the ODS to feed a data warehouse.  The operational data store provides the current information needed by call center agents during "in flight" customer interactions.  The data warehouse is used for more sophisticated analysis of historical data.  For maximum performance, both the ODS and data warehouse run on the Oracle Exadata Database Machine. These are practical illustrations of companies addressing real time reporting and analysis needs using established business intelligence/data warehousing methodologies and tools common to many IT departments.  If real time BI could benefit your organization, you may be already be closer than you thought to having the pieces in place to solving the problem.    Give us a shout if you are interested in learning more or if you have an interesting use or approach to real-time BI.

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  • MySQL - Why would SHOW SLAVE HOSTS cause a binlog dump?

    - by Rory McCann
    We're getting loads of binlog files in our MySQL 5.0.x. We have a normal master/slave replication thing going with 1 master, 1 slave. Looking at /var/log/mysql.log, nearly 90% of the time the replicator connects and does a SHOW SLAVE HOSTS causes a bin log dump. For example: 7020 Query SHOW SLAVE HOSTS 7020 Binlog Dump Log: 'mysql-bin.029634' Pos: 13273 However when I do a SHOW SLAVE HOSTS on the mysql myself, I get no results. Occasionally when the replicator does a SHOW SLAVE HOSTS, mysql will hang for hours. I see nothing in the /var/log/syslog at the same time... What's going on here? How can I debug this more? For the record the MySQL master and slave servers are ubuntu dapper.

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