MySQL version 5.5 - please also tag with mysql for search purposes.

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MySQL 5.5 not starting after master-master configuration

The following master-master configuration worked on MySQL Server 5.1.x(Ubuntu 10.04). Master1(192.168.2.80) ################################## #MySQL Replication ################################## ...
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mysql closing tables taking double the time of process

I have a delete query that is taking a long time. When I check in processlist that status is showing as closing table. It is taking a long time to close tables. ex: I run a query and the total time ...
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Some queries slower in MySQL 5.5 than 5.0?

We have an exceptionally inefficient process (1.3 million selects, 232k updates) that I'm now recoding to be 1 select and 50 updates. In the meantime, though, today's process ran. We recently updated ...
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Can MySQL be patched

I just saw a note about a security issue in MySQL so thought that I'd better patch my test server just in case. The MySQL site is not very helpful and a quick google revealed lots of people asking how ...
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MySql 5.5 in ubuntu repository

Sorry for duplicate question. I am looking for the best way to install mysql 5.5 on ubuntu. So far, there are few options: Installing from tar.gz Installing from PPA. Alien on RPM. All of them ...
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Upgrading to MySQL 5.5 from 5.0 looks broken

I was using SLES SP3, and had earlier MySQL 5.0.67. I upgraded it to 5.5.48 (available with the CD) after upgrading my OS to SP4. I edited the /etc/my.cnf file, and replaced skip-locking to ...
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MySQL master- master replication

I am in the process of setting up Master - Master replication between 2 servers on a production environment. My settings are as follows, Existing System: Server 1: Status: Master databases: db1, ...
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After update triggers that deal with multiple column updates

I want to create a table for audit (audit in the sense of recording whatever a user has done in terms of data manipulation – e.g. update first name, delete contact etc.). For that I need to write a ...
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Server memory consumption not changed after innodb buffer size change

I observed a strange thing while applying the innodb_buffer_pool_size on mysql. I applied the innodb_buffer_pool_size=20G (75% of my physical RAM size) and as per logs and innodb status the mysql is ...
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MySQL Upgrade query

I have 5.5.44-log MySQL Community Server (GPL) running in one of my RHEL 6.4 server. I need to upgrade the server to Percona Server-5.6.29-76.2. How to go about the upgrade? Should I completely remove ...
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Very Very Veeery slow insert queries

I am writing here because I`ve already spent days reading tutorials, other topics in here, and trying different configurations. The project : Fashion website with ~200k products which should be ...
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Boosting select queries during INSERT ON DUPLICATE KEY UPDATE into 150Gb innoDb table

I have a single server with 2 innoDb tables: 35Gb (partitioned, 24M rows), 150Gb (without partitioning, 220M rows). 25% data, 75% index. 99% of select queries are SUM + WHERE + GROUP BY. 100% of ...
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how to force mysql 5.5 server to allow tls/ssl encrypted connections only?

given a mysql Server 5.5 community edition (which came with SLES 11sp4). i configured it to support TLS and it works fine. but i did not found any options or parameters to FORCE IT to do TLS/SSL ...
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Can't connect to MySQL server via SSL

I'm trying to connect to a MySQL server via SSL. I know the server is set up correctly to handle SSL connections because I can connect fine using MySQL workbench, PHP, and command line MySQL client ...
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Trigger query fails to execute because of local variable

I have the following table: |-------------------------------------| |Column |Type |Null|Default| |-------------------------------------| |//**id**// | bigint(11) | No | | |soldier_id ...
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MySQL SELECT n-th row between dates (time interval)

I have a server which records various sensor data each second and inserts it into a MySQL table. To view the sensor data on a dashboard I have a chart which also gets updated with live data each ...
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MySQL 5.5 client SSL connection only works when adding cipher list argument, why?

I set up the packaged MySQL server 5.5 and client on two Ubuntu VM. I configured the server to support SSL. I can connect to the server with the MySQL CLI tool between the VMs, but the connection is ...
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What configs influence whether user credentials/grants are written to the binlog in Mysql

I have a fairly trivial master-master setup. When testing this setup I see that mysql users are binlogged and replicated on slaves. However on each of the masters the binlog-do-db* is for a specific ...
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Cannot give privileges after upgrade from mysql 5.1 to 5.5.46

When I try create a user on phpmyadmin it gives me these errors: #1133 - Can't find any matching row in the user table The selected user was not found in the privilege table This is the command it ...
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EXPLAIN SELECT query is writing to tmp table

I am getting a "copying to tmp table" when running an EXPLAIN SELECT on a query. This is a pseudo-query showing the structure of the query (I can't post the actual query): SELECT colA , colB , ...
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Slave (SQL thread) replicates very slowly

See this video: https://mckay.media/Yxjp2 I have two MySQL replication slaves which are replicating from the same master. Both slaves are running on identical hardware. Each has its data directory ...
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Default Space in WAMP

What is the Default Space for MySQL in WAMP SERVER? We are using MySQL as the back-end for our application development, and it is running out of space. How can we increase the disk space? Or are ...
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commit statement missing for a dml statement in binary log

I have noticed 'commit' statement missing for a DML statement in binary log. Does it mean that this statement is rolled back in server? I am using mysql 5.5.40. sample binlog at 159527792 160229 ...
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SQL Timeout when updating specific rows that goes away when other columns are updated

The data I'm going to provide won't be very complete, so I apologize in advance for that, and will happily supplement with more on request. I mostly just don't know where to begin looking, and don't ...
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What are the side effects of changing MySQL `character_set_server`?

I am having some strange issues with character sets on my system. After digging through all kinds of settings, I found a discrepancy in my character set settings. When I run show variables like ...
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begin end block in MySQL

I have a compound statement of begin end block consisting of some SQL statement as mentioned below. lab_name: BEGIN truncate table table_name; insert into table_name (a,b,c,d,e,f) ...
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MariaDB: Can't connect to MySQL server on '127.0.0.1' (107)

What does it mean the error 107? Can't connect to MySQL server on '127.0.0.1' (107) I haven't found this error in any documentation: https://mariadb.com/kb/en/mariadb/mariadb-error-codes/ ...
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Optimize MySQL JOIN Query

I've been using following Query to fetch data from MySQL. SELECT SQL_CALC_FOUND_ROWS DISTINCT (wi_individual_g.ind_id), wi_individual_g.ind_id, wi_individual_g.ind_name, ...
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Replication Error_code: 1032

I an unable to fix this as I don't know what cause this error. Replication was stoped for maintenance activity and after completing the maintenance we started it and then after some point the ...
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Slave not getting replicated SERVER_UUID error

Unable to start replication Master-Slave, I have searched a lot for this but unable to get the Server-UUID of both the server. Do we have any solution for this. Scenario: I have created new slave ...
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Is double one to many a bad design? It looks duplicate when joining both one-to-many tables

Suppose I have user table, book table, DVD table. User can borrow n book, n DVD at the same time, a book or a DVD can be borrowed by a user. (I understand it is many-to-many situation in real life, ...
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Mysql Replication break Error_code: 1032

Created new slave replication, it was working fine but suddenly after 2 days its giving me this error and the replication stopped. Both on Centos 6.7 Master Version ...
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MySQL replication Got fatal error 1236

I am getting this error when starting a new slave replication from master. Last_IO_Error: Got fatal error 1236 from master when reading data from binary log: 'log event entry exceeded ...
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Using SSL produces error “protocol version mismatch”

Using MySQL Server (5.5.46-0) on Ubuntu 14.04.2 with protocol version 10. Configuring SSL and defining SSL cert files locations in My.cnf file. Have defined absolute paths for CA-cert.pem, ...
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Mysql Replication backup and restoration failed multipal time

I tried restoring MySQL backup several time but unfortunately it gets failed by some or the new reason. I have 2 host Master & Slave with below details. Server1_Master os-centos6.7 mysql- ...
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Restoring MySQL dump ERROR 1449

I took hot backup (dump) from my Master MySQL DB with below command mysqldump -uroot -p --skip-lock-tables --single-transaction --flush-logs --hex-blob --master-data=2 -A > ~/dump.sql ...
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MySQL optimizer difference between 5.6.27 and 5.5

We've just updated the MySQL version of the database of one of our clients from the 5.5 to the 5.6, everything is working fine except one simple query which is causing us troubles. Having the ...
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load data infile in mysql server 5.5 can't load data when foreign key exist

I have a database (TPC-DS benchmark base) with 24 tables(17 dimensions tables, 7 facts tables) I generated this database then I created it in mysql server 5.5 I used the instruction load data local ...
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Change MySQL stored procedure 'Database Collation' name

I have imported a DB from Local machine to server machine. While importing the Database, the character set values of the DB are set by system default to "Latin". I have changed the character set to ...
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mysqld upgrade 5.5 -> 5.6 mysql Error: Failed while fetching Server version! Could be due to unauthorized access

After updating mysql with yum to 5.6 I am getting such an error message when trying to run mysql [root@host rpm]# mysql_upgrade Looking for 'mysql' as: mysql Looking for 'mysqlcheck' as: mysqlcheck ...
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Why is MySQL 5.5 ignoring this index?

I have a pretty simple query that is not using an index I expect it to because of the WHERE. Table: CREATE TABLE `cba_device_log` ( `id` bigint(20) NOT NULL AUTO_INCREMENT, `device_id` varchar(30) ...
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MySql server failing to start

I was reinstalling backup image on Raspberry Pi and I noticed that MySql server isn't running. I've looked in /var/log/syslog and I bumped into this: Dec 4 20:06:00 node mysqld_safe: Starting mysqld ...
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MySQL Trigger at Insertion with nested CAST

So I'm using MySQL 5.5 and trying to insert a VARCHAR as ID (since my teacher requested so), I am trying that each time there is an insertion of a new USER, a trigger automatically assigns an ID to ...
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adding rows vs creating new tables MySQL

I am having a table where I have not more than 15 columns (maximum data type of any of those column is SMALL INT and only a single column of type VARCHAR with maximum 20 chars only). Out of those 15 ...
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server response is getting slow day by day

MySQL server 5.5 > running in Linux Box is getting slow. MySQL server is being used by Java Web application, please help me to figure out the problem.
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MySQL order by is equal, in what order are the results returned?

I use mysql Ver 14.14 Distrib 5.5.44, for debian-linux-gnu (x86_64) using readline 6.3 I have rows that are ordered by an order column. Turns out, many times, the order number is the same, say 1. ...
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MariaDB is Forgetting Previous Auto Increment IDs

I'm using MariaDB 5.5.39, and it seems like it is forgetting the max id of the auto-incremented primary key if I delete all rows from the table and then too much time passes before another row gets ...
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Special Operators in MySQL

I am going through the MySQL doc here and reading about the operators. I couldn't find anything related to special operators over there. Hence I am wondering, is there anything that exists and falls ...
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How can I get month wise leave for a financial time period for an employee in MySQL?

I have the following columns in a table: start_date end_date no_of_days start_day_half -- (if the starting day to be a half day then its flag is 1) end_day_half -- (if the end day to be a half ...
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Unable to connect to mysql remote

I am struggling to connect MySQL database with my application, I am having the following set up 3 Applications running in cluster mode and trying to connect with same DB. MySQL database running on ...