MySQL 5.6 : Latest Release of MySQL with improvements that enhance every functional area of the database kernel.

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3
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39 views

How can I copy the MySQL EXPLAIN result into a table?

I'd like to archive the results of a series of query EXPLAIN plans into a table for later analysis. I created a table that contains all the fields from an EXPLAIN result, but I can't figure out how ...
2
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0answers
1k views

How to do While Loops?

How can we use while loops in MySQL? My test script: BEGIN SELECT 0 INTO @n; WHILE @n < 10 DO SELECT @n; SET @n := @n +1; END WHILE; END; But it has syntax errors. I've also ...
1
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0answers
27 views

amazon rds logs all queries

I have enabled slow query log on Amazon RDS with following configuration. long_query_time = 0.5 general_log = 0 log_output = TABLE min_examined_row_limit = 1000 slow_query_log = 1 ...
1
vote
0answers
357 views

Upgrading from MySQL 5.5 to 5.6 - timestamp issue?

I'm looking at upgrading my Percona Server setup from 5.5 to 5.6. Reading the upgrade docs from MySQL sounds mostly straightforward except for anything involving time/date columns. As far as I can ...
1
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0answers
3k views

mysql 5.6 GTID replication 'Got fatal error 1236 from master when reading data from binary log'

I Checked SHOW SLAVE STATUS error is "'Got fatal error 1236 from master when reading data from binary log: ''The slave is connecting using CHANGE MASTER TO MASTER_AUTO_POSITION = 1, but the master ...
1
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0answers
390 views

Mysql 5.6 and install php5-mysql , mysql-common

I install Mysql 5.6 with this documentaion(in ubuntu 13.04) , now I need to install php5-mysql and mysql-common packages. can I install them with apt-get? I think they will install mysql5.5 ...
0
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0answers
10 views

How to Upgrade Master Slave MySQL on AWS RDS?

I already have Master Slave configuration on AWS RDS. We want to upgrade 5.5 to 5.6.23. ..What should be correct sequence to Upgrade ? 1. Upgrade Master ( Using Modify Instance ) --> Upgrade Slave 2. ...
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0answers
5 views

Dropping a corrupt table in innodb_force_recovery 6

As often happens in mysterious shutdowns during large queries, things ran afowl with InnoDB on my XAMPP MySQL installation (Windows 7 x64). I rebooted and ran Startup Repair, then loaded MySQL to ...
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0answers
11 views

Multi Source replication on single slave having multiple instances MySQL

i had 1 instance of mysql 5.6 on one server A (Slave S) 1 Mysql installed on server B ( Master M1) 1 MySql installed on server C ( Master M2 ) At Slave end : I have created one more instance by ...
0
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0answers
17 views

Replicating from MySQL 5.1 master to 5.6 slave failing because 'INSERT … VALUES (NOW())' results in 'Error_code: 1062'

I am migrating away from some old MySQL 5.1 servers to some new MySQL 5.6 servers. During this process, I'm creating a new MySQL 5.6 slave from an existing MySQL 5.1 slave, using the procedure in the ...
0
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0answers
43 views

Column based replication in mysql 5.6

I want to do column based replication which means: In my server, I have table T1 in which columns are A, B, C, D, E I want to replicate this table on different server in mysql 5.6 only, but with ...
0
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0answers
13 views

InnodDB - is a long running SELECT query when command is “Creating Sort Index” a likely cause of “Lock wait timeout exceeded”

I'm having recurring problems with lock wait timeout errors. These persist and build up until the database drops connections with "Too many connections". It has so far happened when I have been away ...
0
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0answers
28 views

DB Design for Mobile App Clients

Hello I am new to designing DB for Mobile App where speed is the Key. My Mobile App will request to WebAPI and WebAPI will get data from MySQL. I have designed my tables in MySQL as per relational ...
0
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0answers
23 views

table design approach for a rental application with several one to many relationships

I'm trying to go about designing a database/tables for the following situation I'm being presented. I'm developing a rental web application with MySQL as db engine. It is for a nonprofit organizations ...
0
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0answers
25 views

mysqldbcompare does not recognize DEFAULT value

I'm trying to implement a DB Versioning Process. I've got some Developer DBs and one Staging DB. On one Developer DB the DEFAULT Value of one Column has changed from NULL to ''. The DDL has therefore ...
0
votes
0answers
26 views

AWS RDS Constant cpu (20%) utilisation

I have a RDS instance that has workload at specific time window, however, cpu utilisation is a constant 20% even outside this window. There is no replication configured. Can't find a solution for ...
0
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0answers
28 views

insert/update query running slow to specifi tables

I am monitoring MySQL client connections and queries run time. Found some insert/update queries to specific tables are slow than expected. I know the tables which are slow are big in size > 600K, i ...
0
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0answers
23 views

mysql sharding techniques

I have developed one website for social network and I have used mysql for data storage. Now a days, many tables become a very huge (2-3 tables has 30 million records & 3-4 table has 300k records) ...
0
votes
0answers
19 views

How to backup huge Mysql db containing both InnoDB & MyISAM tables in Aws RDS?

I am running a Mysql RDS with 150GB+ data. The DB size is growing very fast(But normal considering the application's nature) Till now we were having only InnoDB storage engine, so we were using the ...
0
votes
0answers
96 views

Facing Failed to read stream error - mysql_native_password error

I have been facing the following error intermittently on MySQL. Authentication to host '127.0.0.1' for user 'root' using method 'mysql_native_password' failed with message: Reading from the ...
0
votes
0answers
61 views

error 1067 process terminated unexpectedly

I am facing the following error while creating the Mysql instance from command line in Windows server 2012. Steps i follwed for creating a new Mysql Instance as a window service: I have stopped the ...
0
votes
0answers
49 views

ERROR 1644 (HY000) at line 1852: Unexpected content found in the performance_schema database

I was upgrading MySQL from 5.1 to MySQL 5.6 on a Linux server installed with RHEL6. I already have 5.1 installed and running with about 300GB of database data, so I want to do a in-place upgrade to ...
0
votes
0answers
62 views

Best way to restore 400GB+ worth of data in MySQL 5.6

So I'm trying to figure what the best/quickest way would be to refresh a massive amount of data. We're wanting to copy 3 months worth of data from a replication server to a QA server for product ...
0
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0answers
28 views

manual data migration/rescue MySQL version: 5.6.23

MySQL died and could not be started. So I transferred my database files via rsync to another server and restore from back up. Now I am trying to access my data with my updated records. mysql> use ...
0
votes
0answers
25 views

Percona Toolkit pt-archiver doesn't work with --bulk-insert option

I'm running pt-archiver like this: pt-archiver --source ... --dest .. --where "last_updated BETWEEN '2015-01-26 00:00:00' AND '2015-02-01 23:59:59'" --ignore --no-check-columns --no-ascend ...
0
votes
0answers
13 views

The same timestamp in different MySQL versions

I read in mysql 5.6 SQL changes following text: TIMESTAMP columns not explicitly declared with the NULL attribute are assigned the NOT NULL attribute. (Columns of other data types, if not ...
0
votes
0answers
28 views

Amazon rds read-replica, use as archive database

I have hosted my database (MySql) on Amazon RDS service and also created read-replica in the same availability zone. I have send my read queries on that read-replica. Now a days my database is become ...
0
votes
0answers
23 views

Does MySQL Backup Restore affect Master-Master Replication

Hello I got some problems with a MySQL shemas and it seems that the schemas got deleted for an unknown reason. I try to find in the binlog for more information of this but I didn't find the way to see ...
0
votes
0answers
35 views

adding rules to MySQL user to have prefix when they created database

I am working on a project that combine multiple MySQL ports under the same port; each port has a shared databases with names (database name and tables), so I though of the following idea. if I created ...
0
votes
0answers
30 views

How to find Deleted and Updated record tables in MYSQL database?

I have scenario like below. I need to find Deleted records and updated records effected tables in mysql. Ex: I update my Name or Email Id in UI that is effected in some tables either one table or ...
0
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0answers
24 views

mysqlfailover utility not ablt to connect

mysqlfailover tool not able to connect to myserver: mysqlfailover --master=test@localhost --discover-slaves-login=root --candidates=root@192.168.2.8:3306 WARNING: Using a password on the command line ...
0
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0answers
46 views

MySQL JDBC Driver puts transaction in read only. Why?

Using the MySQL JDBC connector with a MySQL 5.6.22 data source defaults the transaction mode to read only. Anyone know why?
0
votes
0answers
19 views

Set variable if variable didn't initialized

I'm creating alternate of uuid_short() function named custom_uuid_short. DELIMITER $$ CREATE DEFINER=`root`@`localhost` FUNCTION `custom_short_uuid`() RETURNS bigint(20) unsigned BEGIN declare ...
0
votes
0answers
17 views

MySQL Socket exclusively

I've disabled TCP by using skip-networking in my /etc/my.cnf file I've deleted all users (mysql.user) that have other Host than localhost Now I went through the other tables in the mysql database ...
0
votes
0answers
55 views

MySQL Socket connections and SSL

I'm currently running over some final tweaks and security measures for my MySQL server deployments. Mainly I'm running Google's Golang and connect to the MySQL database through a Socket connection. ...
0
votes
0answers
82 views

mysqldbcompare showing AUTO_INCREMENT differences but there are no missing records

I am encountering a strange issue when using mysqldbcompare to compare two MySQL DBs(one is a master, the other its slave). I noticed that the tool notes that the AUTO_INCREMENT values of this ...
0
votes
0answers
682 views

Blob datatype issue with log file

I am getting continuously below error message in mysqld.log [ERROR] InnoDB: The total blob data length (10152274) is greater than 10% of the redo log file size (3072). Please increase ...
0
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0answers
195 views

MySQL won't start - e44 InnoDB: Assertion failure in thread 3652 in file fil0fil.cc line 5594

MySQL 5.6 is installed on my Windows 2008 server. The service is refusing to start. The error log reported: 2014-12-02 20:27:16 1664 [Note] Plugin 'FEDERATED' is disabled. 2014-12-02 20:27:16 634 ...
0
votes
0answers
77 views

Mysql Multi master replication - auto_increment for tables with natural primary key?

I am thinking about using Master-Master replication using Mysql 5.6.19 with InnoDB as the engine. From what I have been reading, looks like I should be using auto_increment_offset and ...
0
votes
0answers
22 views

Sudden (and drastic) decrease in commands/second on replicated slave

On a slave that uses statement-based replication from a failover of master (all running mysql 5.6), the number of queries executed per minute has suddenly decreased from ~20k during peak traffic to ...
0
votes
0answers
64 views

Differing AUTO_INCREMENT values between 5.1 vs 5.6 slaves

I have a MySQL 5.6.21 slave and a MySQL 5.1.73 slave that are both replicating from the same MySQL 5.1.73 master. I noticed that for several of the tables ( I said several because when I try to rerun ...
0
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0answers
115 views

mysqldbcompare shows checksum fail but row differences passes between MySQL 5.1 and 5.6 databases

I have started to try using mysqldbcompare to help me compare two databases(one is MySQL 5.1.73 and the other MySQL 5.6.21) that are each about 5 gigs with lots of tables, but the databases are ...
0
votes
0answers
131 views

Using partitioned table, and dealing with auto_increment PK

I have a big table (>100 million rows) that tracks user's activities. It has an ID, which is PK and has auto_increment property. This is the only unique key. Table also has userid and datetime column. ...
0
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0answers
363 views

MySQL has gone away with two connections

I'm using MySQL 5.6.19 on OSX 10.9.5 (DMG installation from mysql.com) and I'm receiving the infamous MySQL has gone away when I try to open two connections to this server. If I try connecting from ...
0
votes
0answers
270 views

Create separate temporary table/view and variables for every query

How can I create something similar to VIEW or TEMPORARY TABLE for every query separately? I have 1 process, it creates and holds one connection (doesn't destroy connection after request, so doesn't ...
0
votes
0answers
92 views

InnoDB says I'm in Deadlock when it should not be

I'll do my best to explain the situation. I'm at a complete loss. Preliminaries I'm running a Java Web Application in Tomcat 7.0 using a JDBC Connector to communicate with my MySQL Database. The ...
0
votes
0answers
15 views

Lower resolution of record on MySQL

The database I'm currently working on logs about 50 columns of data per second on our plant. The current high frequency logging is due to ongoing test. However, going long term, this would not be ...
0
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0answers
450 views

Why Percona MySQL is crashing again and again

We have Percona MySQL Cluster running with three nodes on CentOS. Server : Percona-XtraDB-Cluster-server-56-5.6.19-25.6.824.el6.x86_64 One node is crashing repeatedly. Thread pointer: 0x18910ba30 ...
0
votes
0answers
285 views

Why does Amazon RDS memory utilization drop and disk space utilization rises?

I encountered a problem with my Amazon RDS(db.m2.2xlarge) where DB connections spiked up and my website started responding slowly. On looking up the metrics I was not sure why my freeable memory shot ...
0
votes
0answers
276 views

Unable to install mysql 5.6.17and configure mysql on Win 7 -64 bit Os

Already seen this post but not my type of question as iam stuck in the installation itself I am trying to install MySQL 5.6.17 on Windows 7 64-bit Operating System. Everytime I try I am stuck in ...