MySQL 5.1 : The Second Major Release of MySQL 5

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Change MAMP to use a lower Mysql 5.1 version

I need to have the same development environment for my PHP program. My clients test server is running on Mysql 5.1 while my local is using MAMP running Mysql 5.5. How do downgrade my mysql database ...
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204 views

Mysql query is very slow

I am developing a website like any other social networking site using mysql. I wish it give people suggestion to my users, and I have implemented this functionality in my application, but It is ...
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210 views

MySQL: Prevent DROP TABLE and TRUNCATE TABLE on Slaves

Can someone tell me how to prevent the following commands DROP TABLE <tbl-name>; TRUNCATE TABLE <tbl-name>; from being replicated to slaves?
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361 views

The total number of locks exceeds the lock table size, even after increasing buffer pool size

I am trying to partition a table with 200 million records in it. This table already exists: CREATE TABLE linkmap_ntoken ( target_nToken varchar(200) NOT NULL, ntoken_hashcode int(15) NOT NULL, ...
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216 views

How to configure my.cnf for Mysql 5.1, which is using too much CPU?

I am new Database engineer. I am having trouble in my server which is using too much CPU on database query(simple count statement). I have googled about it, so i found out it depends on system ...
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117 views

MySQL: How to avoid case sensitivity in SQL queries when migrate from Windows to Linux?

I have migrated my Database from Windows to Linux server. In many places, query has been written without focusing their cases (uppercase / lowercase). So, these queries are not getting executed and ...
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1answer
52 views

How to migrate from MySQL to MariaDB or Percona with minimum downtime?

I want to migrate my MySQL 5.1 database to one of these databases: MariaDB, PerconaDB or MySQL 5.6 Is there any way to do this operation with no downtime or with minimum downtime possible? How? The ...
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2answers
661 views

How to run a cold backup with Linux/tar without shutting down MySQL slave?

I run the following before tar-ing up the data directory: STOP SLAVE; FLUSH TABLES WITH READ LOCK; FLUSH LOGS; However, tar will sometimes complain that the ibdata* and ib_logfiles* files are ...
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19 views

How can I move a MySQL database from 5.1 to 5.6?

I have pretty big database, like with 5 000 000 rows in total. It is located in a remote server. I want to copy this database to my personal computer, for testing purposes. However I don't know the ...
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67 views

MySQL 5.1: change datadir variable value in my.cnf

Below is my system configuration: OS: RHEL5 MySQL: 5.1.73 Default datadir=/var/lib/mysql/ But, the above directory has space crunch. So, I decided to change the path. I found /u000 directory has ...
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2answers
147 views

Problem in Fetching Result set in Desired Format

I have 2 tables having the following columns Person ------ person_id, first_name, middle_name, last_name Items ----- person_item_id, person_id, item_type, status, ordered_date The query is ...
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130 views

How can i import 150GB database after deleting ibdata1,logfile in MYSQL?

I have 150GB database and my ibdata1 file size is 240GB so i want shrink the ibdata1 file so for that i have to export the DB and then drop the tables and then stop mysql, delete the ibdata1 file and ...
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92 views

Whether to use or not to use: DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP

In one Database table, created_at & updated_at are defined as: `created_at` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP `updated_at` timestamp NOT NULL DEFAULT ...
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41 views

MySQL 5.1 High Cpu usage on CentOS 6

I am running MySQL 5.1 on a CentOS 6 server with 16G ram. I got also apache on it. MySQL is constantly using too much cpu. top - 17:40:36 up 112 days, 12:13, 1 user, load average: 1.24, 1.72, 1.82 ...
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2k views

statistics State in MySQL Processlist

I have a busy MySQL Server having query SELECT sys_sess_state, index_state, timeout_lvl, last_queued_dt, last_polled_wait_dt, create_id, create_dt, modify_id, modify_dt FROM PQR_AM_SYSTEM_SESSION ...
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1answer
19 views

MySQL Replication Between Three Hosts?

We have a need to move our Moodle server to a different host, and our current host runs a LAMP stack that likely runs on a VM. It is accessed most of the time. In the event that the current host ...
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1answer
22 views

I'm trying to restore single database from mysqldump all-databases with different name

I'm running mysql-server-5.1.73-3.el6_5.x86_64: mysql> SELECT VERSION(); +------------+ | VERSION() | +------------+ | 5.1.73-log | +------------+ 1 row in set (0.00 sec) mysql> I created ...
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481 views

Why does max_connections in my.ini not match concurrent connections in Mysql instance config wizard?

MySQL 5.1.x | Windows Server 2003 Can someone please clarify why max_connections in my.ini is much larger than the manual value I specify in the Concurrent Connections Dialogue? For example, if I ...
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1answer
29 views

mysqldbcompare - ERROR: The list of objects differs among database

I'm running: # cat /etc/redhat-release Red Hat Enterprise Linux Server release 6.5 (Santiago) # rpm -q mysql-server mysql-server-5.1.73-3.el6_5.x86_64 # and mysql> SELECT VERSION(); ...
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37 views

MySQL replication working, but data is out of date

I'm trying to figure out why even though SHOW SLAVE STATUS isn't reporting any errors, nothing is replicating (see below): both nodes are running: mysql> SELECT VERSION(); +------------+ | ...
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95 views

Help interpreting a MySQL execution plan

I'm trying to understand a slow query. The SELECT has been running (at this moment) for almost 18000 seconds (output from a SELECT on PROCESSLIST): id: 22 time: 17870 ...
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19 views

How to restore MySQL database from Files

Primary hard disk where MySQL (version 5.1) was installed is crashed and I had to re install entire OS. I have all the files including ibdata1 file. How do I go about recreating and attaching database ...
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1answer
52 views

How to avoid/prevent Aborted Connections in mysql

We are using MySQL Version 5.1.73. Database is getting huge number of connections around 600 at one time. I observed Aborted Connections are getting increased from Global Status variables. So I ...
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28 views

MySQL After Update Trigger apparently not running

I have the following After Update trigger on a MySQL table: CREATE DEFINER = 'root'@'localhost' TRIGGER phpbb_rathermenacing.phpbb_bbdkp_memberlist_AUPD AFTER UPDATE ON ...
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Text comparison select query needed that finds most whole word matches within larger string

I have a database of products, many with similar names. For example... iPhone 5s (GSM model) A1533 iPhone 5s (GSM model China) A1518 iPhone 5s (GSM model China) A1530 iPhone 5c (GSM model) ...
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1answer
40 views

Extract one MySQL database from a FULL MYSQL Server backup file

I have a small shared windows server on which i'have installed MySQL 5.1 engine for hosting my user's mysql databases. I backup the complete MySQL databases each day by running this script as batch ...
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2answers
340 views

SHOW SLAVE HOSTS shows incorrect output

I had used --report-host option in one of my slaves, so that I could see that under SHOW SLAVE HOSTS. Now that server is no longer in use. I have uninstalled that server as well. Unfortunately I still ...
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41 views

MySQL: How index speed up query execution

I have read multiple articles about MySQL indexes. Some of the important pages are below: http://dev.mysql.com/doc/refman/5.6/en/mysql-indexes.html ...
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1answer
359 views

MySQL: Use Sysbench on Windows

Sysbench is a tool to analyze the MySQL performance. I downloaded it and extracted but there is no executable file. Files having extensions like .sh or .c or .h are available. I gone through the ...
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181 views

MySQL 5.1.x: Performance improvement in Enterprise edition Vs community edition

My application is running on MySQL 5.1.58 community edition. I tried to search enterprise edition of MySQL 5.1.X but only MySQL 5.6.X version of enterprise edition is available. Is it possible to ...
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37 views

MySQL: How turning off the logging affect the performance?

OS: RHEL5 DB: MySQL 5.1.73 community edition DB size: ~1GB I have setup a testing environment and turned off all logging - general logs, binary logs, slow query logs etc. I am using Oracle ...
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Merge/combine two queries with different dates

I have one query that runs a SUM statement based on daterange 1, and worked fine, and another query that run same SUM statement, but on a different date range. I would like to merge/combine the two ...
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38 views

installing mysql 5.1 alongside mysql 5.5

mysql 5.5 is installed. I need 5.1 to install an old website so it can be updated. The installer refuses to let me install onto the disk with 5.5. I don't have any other disks. I downloaded the ...
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1answer
51 views

Is it possible to uninsall MySQL-5.6 and install MySQL-5.1 on RHEL 5

I have installed MySQL-5.6.x community edition on RHEL5. It was running fine. Since, it is my testing server. To find the differences in execution timing, I have to install the MySQL-5.1 community ...
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1answer
7k views

Change existing datadir path

I want to change the datadir path in the my.ini file. The existing datadir path is C:/ProgramData/MySQL/MySQL Server 5.1/Data/ The size of my C: drive is 30 GB and the MySQL data folder is occupying ...
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2answers
66 views

MySQL: Moving Database from Windows to Linux

I have a Windows based dedicated server have below configuration: Windows edition: Windows Server 2008 R2 Standard Service Pack 1 Processor: Intel(R) Xeon(R) CPU X5460 @3.16GHZ 3.16 GHZ (2 ...
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14 views

Replication is broken because of events in wrong order in binlog

I have a master-master replication which is used rather like a master-slave because of replication breaks from time to time. It is always broken on the same table. To find the reason on this problem I ...
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1answer
75 views

MySQL replication error 1594

Is there a way to restart replication without going over MySQL :: MySQL 5.1 Reference Manual :: 16 Replication. I'm NOT seeing ANY errors on master and I'm not entirely sure why slave is ...
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1answer
41 views

Insert into a view derived from a table with a discriminator field

I am in a situation in which I have a base table with some fields and a discriminator field which could have one out of a specific set of values. From that base table, I have derived many views, one ...
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8 views

Large data migration from DBO to DBO - memory & time efficient?

I need to migrate data from one database (Mysql vendor, used as Alfresco DB) to custom designed Mysql DB used for reporting. Both DB's are on same DB host. My initial idea was to use view as data ...
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14 views

Can it Possible to do Mysql Active - Active Replication between Redaht linux 6.4X and Ubuntu 12X?

I have small doubt regarding Mysql Active-Active Replication. Can it Possible to do Mysql Master-Master (Active-Active) replication in Mysql between Redhat Linux and Ubuntu? Thanks & regards, ...
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1answer
33 views

MySQL 5.1: How to rollback partitioned table

I have partitioned a table on the basis of one flag column have value either 0 or 1. Now, I want to roll back these tables. How can I do this?
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34 views

mysql logs same query multiple times or is it application problem?

I have temporarily switched on logging on the server. The site is used in the US and local time there was 4 in the morning so not many people are using it at that time. What I did was delete any logs ...
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17 views

Analize Query in MySQL Server 5.1

I try use MySQL Workbench 6 to analyze the cost, but they don't show the cost of query. How i get this costs?
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44 views

MySQL: Algebra in Union operation

I have below query: select entity_id from table1 exc UNION select entity_id from tabl2 inc On execution, I got 24419 rows. When I execute select entity_id from table1 exc I got 16235 rows and on ...
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96 views

Do triggers affect DB performance

I have a database with 250 small and medium sized tables. These tables are related with both MyISAM and InnoDB storage engines. There are multiple triggers that have been created on different tables. ...
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124 views

InnoDB engine is not loading after tuning parameters

After installing MySQL-5.1.73, I placed default my-huge.cnf into /etc/my.cnf and started the mysql service. It was running without any issue. Now, I tunned some parameters in /etc/my.cnf file. Below ...
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265 views

Is there any command to optimize all MySQL tables one by one automatically?

I execute below command line statement to optimize a table: optimize table tablename; Is there any command or statement which can optimize all the tables one by one of the selected database?
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87 views

Difference between [mysql] and [mysqld] in MySQL configuration file

There are multiple sections in MySQL configuration file: [mysql] [mysqld] [myisamchk] [mysqld_safe] [mysqlhotcopy] [mysqldump] [client] I found that same variables with different values have ...
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33 views

Switching from Windows to LINUX server with lower configuration

As of now, My application is running on dedicated windows DB server which configuration is below: RAM 8.00 GB Processor Intel(R) Xeon(R) CPU X5460 @3.16GHz, OS Windows Server ...