Tagged Questions
0
votes
1answer
20 views
ERROR 13 (HY000) When Creating Database
I'm trying to create a database and when I type in CREATE DATABASE epik; I get the error ERROR 13 (HY000): Can't get stat of './epik' (Errcode: 13) I am running kubuntu 13.04 with mysql 5.5.31.
0
votes
0answers
39 views
How much RAM for a large database on a dedicated MySQL InnoDB server?
Hereunder my hardware config:
CPU: 1x Intel Xeon X3470 Quad core @ 2.93GHz
RAM: 4x 8GB DDR3
Disks: 2 x SATA 320GB for the system & 4 x SAS 300GB for the DB
I've upgraded from 12Gb to 32Gb and ...
0
votes
0answers
20 views
Commit count while using LOAD statements in MYSQL
I have a very big text delimited file, I am using Mysql LOAD statement but i want to put some commit count, for example if i put commit count 1000 then after inserting every 1000 rows it should commit ...
0
votes
1answer
20 views
InnoDB Failure of some kind
I have MySQL 5.5 installed. I tried to install Joolma but it failed. I went into their sql and replace EGNINE=InnoDB with MyISAM and the install worked.
InnoDB is listed under SHOW ENGINES;
Any idea ...
0
votes
1answer
55 views
Plugin 'FEDERATED' is disabled
Im trying to start Mysql using easyPHP : the response is an alert window to a log file. The main error is <-- Plugin 'FEDERATED' is disabled -->.
Through my research on internet i found that the ...
3
votes
3answers
103 views
Issue after moving the ib_logfile1 and ib_logfile0 files
I wanted to increase the innodb_log_file_size for better performance. And I increased it from the default value to 256 MB. As usual I got the error saying InnoDB: Error: log file ./ib_logfile0 is of ...
0
votes
1answer
50 views
Generic SQL Job Scheduler for multiple RDBMS's?
I have been searching for an answer to this, but can't seem to find anything. So my problem is this - we have an environment with MS SQL Server 2008, MySQL, and RedShift, and have some complex ...
0
votes
1answer
22 views
replication breaks after upgrading master
I have a set up of replication with master 5.1.30 and slave 5.5.16
and the replication is working good
Now i have upgraded mysql master to 5.1.47
As far as i know we have to turn off the log bin ...
4
votes
1answer
33 views
High amount of Read Misses and Pages To Be Flushed
I am running a mysql database backend for a Moodle installation, and after a few months performance really starts to suffer (Up to 30 seconds for some pages to load). Under investigation in the InnoDB ...
1
vote
1answer
68 views
Insert from one row to another using cases
My original table was(being used since 2005):
CREATE TABLE `request` (
`msg` VARCHAR(150) NOT NULL,
`id` VARCHAR(20) NOT NULL,
`ctg` VARCHAR(10) NOT NULL DEFAULT 'misc',
`date` ...
0
votes
0answers
37 views
MySQL Stored Procedure
I am developing a database for an eCommerce website, I have written the stored procedure for the following tables,
user_master,
authentication_master,
country_master,
public_master.
I have ...
0
votes
0answers
57 views
Stored Procedures and Functions in MySQL
I just need to know about Stored Procedures and Functions in MySQL.
While I designing a database for an eCommerce website, I was in a situation to write stored procedure for my database, this is new ...
0
votes
0answers
476 views
1286 - Unknown storage engine 'InnoDB'
I am trying to use roundcube and it recently just broke. I don't know if this is due to a MySQL update that happened recently or not but in phpMyAdmin I get the following error if I try and view a ...
1
vote
1answer
193 views
Images, PDF, audio and video files in MySQL
I am designing a database for an eCommerce website.
How can I store images, audio, video and PDF files which are uploaded from the online users, in a MySQL database?
I am using the InnoDB storage ...
1
vote
1answer
75 views
Database Designing for a Ecomerce website
I am new to database designing. I am designing a database for an eCommerce website, there is a lot of products to be updated, but while designing for product specification table I do not understand ...
0
votes
2answers
158 views
MySQL Table not repairing
Table info:
Database name: user_motiva
Table name: wp_options.frm wp_options.MYD wp_options.MYI wp_options.TMD
when I do a mysqlcheck -r --all-databases it gets hung on that table even if you ...
0
votes
1answer
191 views
Unable to change engine to MyISAM in MySQL
I have installed MySQL 5.6.10 on Mac OS X 10.6.5. My issue is that MySQL is using InnoDB as its default engine.
I have checked following engines are supported in MySQL:
show engines\G
...
2
votes
1answer
60 views
MySQL specific database configuration file
In MySQL's configuration file I've globally disabled autocommit as so.
[mysqld]
autocommit=0
I need to turn MySQL's autocommit on for a specific Ruby on Rails database though. It could be for the ...
0
votes
0answers
45 views
400GB Innodb table with deletes and no data_free?
I have an Innodb table which is over 400GB and performing quite a lot of deletes on it, so I thought I should try to optimize the free space kept it is probably creating. I ran this query to find out ...
0
votes
1answer
163 views
mysql fine tuning: open_tables, opened_tables
I'm a novice to database administration and have been depending on forum suggestions and answers to help resolve my database hang ups and too many connections errors; I've managed to reduce the ...
1
vote
1answer
237 views
MySQL Tables crashing randomly
This is one of the many random Tables that get corrupted. Any ideas why and what would be causing this?
How do I keep MySQL tables from crashing and MySQL from crashing?
Repairing USR_wp537
...
2
votes
1answer
225 views
Mysql - show results from 3 tables excluding NULL or EMPTY values for certain fields
I have 3 simple tables with polls, users and votes. I'd like to show all polls ordered by clean count of votes (sometimes either poll_id or user_id don't get inserted).
Furthermore I'd like to show ...
1
vote
1answer
288 views
Is there a progress indicator for OPTIMIZE TABLE progress?
MySQL 5.1.4x (Windows) | Innodb
I recently purged data from a mySQL DB (a few hundred thousand rows) and I'm planning to use
OPTIMIZE TABLE LOGTABLEFOO1,LOGTABLEFOO2,LOGTABLEFOO3;
to reduce the ...
1
vote
0answers
81 views
Database instance keeps restarting
From the past few days, our MySQL database instance has crashed and had to be restarted a few times. My MySQL version is 5.1.57-log. The CPU and memory usage was way below 50% during the crash time. I ...
2
votes
2answers
430 views
Take individual MySQL database offline
MySQL does not have any SQL commands or internal mechanisms for
making an individual database unavailable / offline
moving an individual database
Thtis being the case, how can you take an ...
2
votes
2answers
116 views
Database structure for a system with multisite
The system I'm working is structured as below. Given that I'm planning to use Joomla as the base.
a(www.a.com),b(www.b.com),c(www.c.com) are search portals which allows user to to search for ...
1
vote
1answer
148 views
mysql session logging tables
I've been building a session logging system for our sites. We get around ~15m hits a year and at the moment we're really only interested in stats about people who logon to our sites.
Our table ...
0
votes
0answers
164 views
Error connecting to DB
In regards to:
http://serverfault.com/questions/442218/remounting-mysql-under-a-new-mount-point
Everything is running. MySQL started but for websites they can not connect to the mysql database at ...
1
vote
1answer
92 views
Regularly import tab-seperated log file to MySQL
I'm looking to keep arpwatch entries in a MySQL database to crossreference with other information I'm storing based on mac addresses. I've manually imported the arpwatch database into my mysql ...
0
votes
1answer
142 views
Data storage in innodb
I am new to mysql administration and I came to know about the data storage in myisam is through .frm, .myd and .myi. I could not find the data storage mechanism in InnoDB rather than its storage in ...
3
votes
3answers
114 views
Is this database fine for calculation?
I am doing an application called as Invoice Application.For that I have my database is like this.
Now my problem comes when I am taking the tax part in my database.As I have made tax as an option ...
3
votes
2answers
1k views
pt-table-checksum help required
I am trying to figure out pt-table-checksum, as I am using it for the first time.
It look likes the documentation is complex and not easy to understand stuff.
I have a complex replication topology ...
4
votes
1answer
1k views
Capabilities of InnoDB INSERT Performance
Hi I am running the most recent version of Percona Server.
Server version: 5.5.24-55 Percona Server (GPL), Release 26.0
I have a 10 cpu box of these characteristics.
processor : 0
vendor_id ...
3
votes
1answer
59 views
Administration of MySQL Users
What is the best practice for keeping and maintaining MySQL users? Say for example I have 5 programmers and a PHP application connecting to a database. Should I create 6 different users 1 for each ...
2
votes
3answers
209 views
MySQL - Master/Slave Replication with different server specs
I have a Master/Slave replication (using MySql 5.1 / InnoDB).
Currently both my master & slave are running on the same type of server (32 GB RAM, 2 x Intel Xeon 5520 Quad Core 2.26 GHz (8 cores)) ...
2
votes
4answers
155 views
MySql Database solution for specific web app problem
Well, I need to create a comment system for posts that people add to my web app. This web app is just like facebook or myspace posts. Users add posts and people can comment on them. But the problem is ...
6
votes
4answers
3k views
Why using innodb_file_per_table?
There are many articles exaggerating (IMHO of course) the need for innodb_file_per_table. I understand that with innodb_file_per_table, there should be a better control over the individual tables; ...
0
votes
0answers
302 views
Grouping a comma separated value on common data [closed]
I have a table with col1 id int, col2 as varchar(comma seperated value) and column 3 for assigning group to them.
Table looks like
col1 col2 group
..............................
...
1
vote
1answer
245 views
Difference in between MySQL affected num rows and num rows
I am just newbie to the MySQL.I want to know what is the main differences in between mysql num rows and mysql affected num rows?Any example or references will be highly appreciable.
0
votes
1answer
184 views
Look for software that can convert sql (mysql) to erd
I would like to have an ER Diagarm in phpmyadmin, however, its graph is not up to my expectation, the graph has no relationship indicator (1-1) (1-m) etc at all.
So i am wondering whether there is a ...
-1
votes
2answers
849 views
Data Base Administration Oracle vs MySql? [closed]
I have worked with MSSQL for a while now, but now we want to try to move to some open source for a specific part of the company's products or explore Oracle if possible. What would you say are the ...
2
votes
1answer
99 views
MySQL switch between data directories for individual databases
I'm in the middle of designing a solution to an issue we're currently experiencing while writing to certain large MyISAM tables. The database in question basically stores information regarding two ...
1
vote
1answer
410 views
MySQL Cluster over WAN: Best Architecture Options?
My company is looking at a multi-data-centre solution for high-availability, fun, and profit.
We have businesses across the planet, with the need for MySQL database clustering solutions that can keep ...
1
vote
1answer
270 views
How to prevent high memory, CPU and time consumption by MySQL restore?
I have a local test machine with 2 GB RAM and a dual core processor.
I imported a dump on that using
mysql -uuser -psecret < script.sql
script.sql is a 700 MB file which contains a single ...
2
votes
1answer
860 views
How to upgrade MySQL to a New version..?
I have installed mysql using the package management system.I am using ubuntu machine.
After that i have very well configured the server for InnoDB and other server related parameters.
I am using the ...
5
votes
1answer
6k views
Is there any best way to reduce the size of ibdata in mysql.?
I have some Production servers whose ibdata increases in size day by day.
It has already consumed 290GB of space.
The tables in the servers are mostly InnoDB and there are high read and write ...
2
votes
2answers
1k views
Difference between Row based and statement based replication in Mysql?
What is the Actual difference between Row based and Statement based replication I actually looking in terms of replication effect's on slave.
If I am using Row based replication then whats is the ...
3
votes
1answer
581 views
Master and Slave having same id's
I am working as a remote DBA for some of the production servers.
There was replication from Master to Slave.
There is something changed in the scenario they have made one of the Slaves as master ...
1
vote
1answer
335 views
Problem with MySQL Master/Slave reboot when in replication
There is a master and number of slaves connected to it.
Due to some patches, we have to Reboot the Master and Slave.
Afterwards, we have to make sure replication is running fine.
While doing this ...
3
votes
1answer
980 views
Does `Seconds_Behind_Master` show exact Slave Lag from Master?
Does Seconds_Behind_Master show the correct result?
I have also Implemented the mk-heartbeat replication monitoring.
It was showing the other result in comparison with Seconds_Behind_Master.
Which ...
