MySQL 5.5 brought many performance enhancements and expanded the feature set of the popular open-source RDBMS.
-3
votes
1answer
43 views
How to create Mysql Replication on mysql 5.5 master-slave [duplicate]
Guyz please tell me how to replicate master-slave in mysql 5.5
0
votes
1answer
271 views
MySQL slave stuck in “Reading event from the relay log”?
5.5.28-log MySQL Community Server (GPL) by Remi
binlog-format=MIXED
My problem is similar to this question.
*************************** 2. row ***************************
Id: 973415
User: ...
0
votes
1answer
29 views
MySQL not allowing text columns?
I'm using MySQL 5.5.27. I currently have a BLOB column, that I want to convert to text to allow fulltext searching. The ALTER TABLE command to create a text column is successful, but the ALTER TABLE ...
0
votes
1answer
61 views
MySQL inserts/deletes slowing down after a while after Start/Reboot
The Setup here is:
OS: Ubuntu 12.04 (1 Core and 1.75 GB of RAMO)
MySQL Version: 5.5
There are about 8 to 9 tables in the database. On initially starting mysql the queries are fast at around 0.05 - ...
3
votes
1answer
87 views
How this simple Stored Procedure ended up in Deadlock
Thanks for all and this forum is really helpful.
After few minutes of system running we get “Try restarting the transaction.”
And its end up in deadlock.
We use MySQL 5.5.28 and the Java code ...
0
votes
1answer
59 views
MySQL Slave Lagging Almost Daily -Ver 5.5.17 ( Master & Slave )
I am observing this lag in a continuous manner. Investigating in the bin log events, i found
the following information. Slave executing the relay Logs slowly.
1. Changing the Innodb File Format ...
0
votes
2answers
81 views
How do I fix the definer problem The user specified as a definer ('fred'@'192.168.0.%') does not exist
I dumped an existing database from my web site into a new MySQL setup on my laptop. Everything works except pages that use a view, when the error message above appears. There is only one view on the ...
1
vote
1answer
77 views
Unique index on 2 columns in mysql
I have one table in mysql named 'UserFriends' where I am updating my websites user's friends details.
here is the schema of the table (UserFriends)
id int,
Userid int,
friendid int,
createdate ...
5
votes
1answer
218 views
effective mysql table/index design for 35 million rows+ table, with 200+ corresponding columns (double), any combination of which may be queried
I am looking for advice on table/index design for the following situation:
i have a large table (stock price history data, InnoDB, 35 million rows and growing) with a compound primary key (assetid ...
1
vote
2answers
62 views
Tinyint structure is confusing
I am confused to see this tinyint(3) structure. If tinyint can store only 1 byte then what is the purpose of giving the size in brackets? Is there something special with this parameter in MySQL?
1
vote
2answers
76 views
Database and query optimizacion
I have a database containing three tables: tbl_database (main table is the primary), tbl_cmdatabase and tbl_blacklist. The three tables share the same structure but differ in the number of records ...
0
votes
1answer
137 views
How to get only month from MySQL date/time?
In my MySQL server, I have rows that have the date of my created content. Example: 2013-03-17 02:53:47
For now, I am using:
$date = $fetch[thedaterownamegoeshere];
<?php echo $date; ?>
But ...
0
votes
1answer
37 views
Strange characters in mysqlbinlog output
Has anyone experienced this? Data replicates fine but when output in mysqlbinlog there are hidden characters that break the input?
mysqlbinlog Ver 3.3 for Linux at x86_64
mysql 5.5.28 server
...
0
votes
0answers
27 views
mysqlbinlog (mysql5.5) output errors out (char length)
wondering why an invalid insert (exceeds char length varchar(100)) breaks when piping mysqlbinlog output to RDS-- when pasted into a client and run separately-- it inserts, truncates, and warns ...
0
votes
0answers
436 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 ...
0
votes
1answer
59 views
Breaking Semisynchronous Replication in MySQL 5.5
I've set up Semisynchronous Replication between two MySQL 5.5 servers running on Windows 7.
My application is running and updating the database of the master server and same is being updated in the ...
3
votes
2answers
616 views
Is my.cnf for mysql 5.5 is suitable and well tuned for below hardware spec?
My Hardware Spec
Technology: Ivy Bridge
CPU: Intel Xeon E3 1245v2
Intel Smart Cache: 8MB
Cores / Threads: 4 / 8
Frequency: 3.4GHz+ / 3.8GHz Turbo Boost
RAM: 32 GB DDR3
Hard disk: 2x 2TB SATA3
Raid 1 ...
3
votes
4answers
248 views
Stress Test to Saturate Memory for MySQL InnoDB
I'm investigating windows 32bit memory problems (the 2G limit) and am after a test which will max out MySQL's memory including InnoDB Buffer Pool, per connection memory and/or any other uses of ...
1
vote
1answer
292 views
“Lost connection to MySQL server during query” error
I have MySQL 5.5.20 and this table:
mysql> desc country;
+----------------+-------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
...
0
votes
1answer
16 views
Why isn't my includeThreadNamesAsStatementComment JDBC parameter working?
The JDBC API lists a includeThreadNamesAsStatementComment parameter that seems to indicate it will prefix all queries with the Java thread ID. I thought this would be useful in tying back DB activity ...
0
votes
0answers
20 views
View is not dropping
I tried removing a view in HeidiSQL, and it froze bunch of times. So I connected to a database with Putty, ran a command
DROP VIEW item_view;
and nothing happened, its still running and command ...
1
vote
2answers
115 views
MySQL information_schema doesn't update
I have a database, say abc, in mysql server. It has only one table named test. test uses innodb engine and I've set innodb_file_per_table to true.
After I run the query delete from abc.test, I want ...
0
votes
3answers
48 views
Using MySQL InnoDB as an Archive
My site has a main MySQL InnoDB table that it does most of its work on. New rows get inserted at a rate of 1 million per week, and rows older than a week gets moved over to an archive table on a daily ...
1
vote
5answers
260 views
How to properly kill MySQL?
I have CentOS 64bit with CPanel installed and I use
service mysql stop
However, it keeps doing ..... for minutes and it never stops. It used to be instant. Any idea why it does that and how to fix? ...
0
votes
0answers
54 views
How to properly kill MySQL? [duplicate]
I have CentOS 64bit with CPanel installed and I use
service mysql stop
However, it keeps doing ..... for minutes and it never stops. It used to be instant. Any idea why it does that and how to fix? ...
0
votes
2answers
154 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
152 views
Error 1044 Access denied to user
This is driving me crazy.
When I try to create a few tables from my Workbench model I get this error 1044.
I've been trying to find a solution but nothing works for me.
Curiously when I run ...
0
votes
2answers
208 views
How to restore mysql dump file? [closed]
We have created a dump file (.sql) using the command mysqldump in mysql5.5.
Now we want to restore the same. We are using the command :-
-u[username] -p[pwd] [dbname] < [.sql file]
But we are not ...
1
vote
1answer
55 views
INSTALL PLUGIN 'rpl_semi_sync_master' SONAME 'semisync_master.so' not working
I'm trying to install semi synchronous replication in my mysql 5.5 and trying to execute the below command:
INSTALL PLUGIN 'rpl_semi_sync_master' SONAME 'semisync_master.so'
but this command is ...
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 ...
1
vote
1answer
82 views
Is it okay to have different lower_case_table_names value on master and slave?
I have a OSX MySQL master with lower_case_table_names set to 2. I have just setup a Linux MySQL slave with lower_case_table_names=1.
I haven't started replication on the slave, but everything looks ...
0
votes
0answers
65 views
Migrating database from OSX to Linux
I followed the setup in below link, to setup mysql. Basically, I am have a master on OS X server and want to setup a linux slave.
Create a mysql slave database from master database
After I copied ...
0
votes
0answers
17 views
How to get details of changes in point in time recovery using mysqlbinlog
I have written a shell script for point in time recovery using binary logs( Point-in-Time Recovery Using Event Times). I'm using the start time as the previous full-backup start time and end time will ...
0
votes
0answers
47 views
Returning multiple resultset from the same table
i am working with mysql procedure. final result set i have got in to one table.
now i need to return for each set i need to return the value.
example:
like this is contents in my the table.
i need ...
0
votes
2answers
367 views
What is the difference between optimize table and analyze table in mysql
What is the difference between optimize table and analyze table in mysql? I have read the online docs, but not sure what the difference is.
1
vote
2answers
269 views
SUPER privilege not defined for master user in Amazon MySQL RDS
I have created one medium instance on amazon rds in asia pecific (singapore) region. i have created my master user with master password. and it is working/connecting fine with workbench installed on ...
0
votes
1answer
96 views
Create a mysql slave database from master database
I have a mysql master database running. I want to have a slave database. So, I stopped the master mysql database and copied it to the slave machine. I had bin log enabled on master so even those files ...
2
votes
1answer
53 views
System to track what Zip Codes my vendors service
I am designing a table configuration that will contain all of the zip codes in the United States. I have a .csv file of all the zip codes in the U.S., so thats at least a start.
This will end up as a ...
1
vote
2answers
58 views
Should master and slave have same mysql version?
I have a master database running mysql 5.5.11, and I am planning to setup a new slave. I am planning to use the 5.5.30 as it is the latest version. For setting up new slave, I am copying files from ...
0
votes
3answers
217 views
Mysql optimization help
I've tried optimizing mysql as good as I could, but apparently I'm not to good at it :-)
So I come to you guys for help.
Server specs are:
AMD Opteron CPU 8 cores
16 GB RAM
2x2.000 GB HDD 7.200 RPM ...
0
votes
1answer
79 views
MySQL General log not working on Mac OS X [duplicate]
I want to log all queries to the database running on my MacBook Pro (Mac OS X 10.8.1). I created a file /etc/my.cnf with the following content:
[mysqld]
general_log=1
...
0
votes
1answer
1k views
MySQL Installation error: Unable to update security settings
I tried to configure MySQL server 5.5 on Windows and this is what I get
mysql-server-5.5-winx64:56 - Attempting to update security settings.
mysql-server-5.5-winx64:100 - Unable to update security ...
2
votes
1answer
74 views
How can I disable utf8mb4 entirely on MySQL 5.5?
I know you're not supposed to do this, but I have a MySQL 5.5 master and a MySQL 5.1 replication slave. That's supposed to be okay, unless I do something stupid like use utf8mb4 that isn't supported ...
1
vote
1answer
56 views
In Mysql 5.5, why is the upper bound of a character range not inclusive?
So I'm trying to query on a character range, i.e. all manufacturers with names starting with a or b:
SELECT manufacturer FROM warehouse WHERE manufacturer >= 'a' AND manufacturer <= 'b'
or:
...
1
vote
0answers
33 views
Is there a canonical list of MySQL defaults which should be changed
I'm setting up a new mysql server as we're building a new app at work.
Most of the developers/operations guys are familiar with mysql.
Many of mysql's settings (eg strict mode) are set badly by ...
1
vote
1answer
226 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
97 views
Which is more efficient, trigger or PHP code?
My requirement is to move EMR data for a patient to a set of history tables when the patient has been discharged. I proposed to use an after trigger on the table housing the discharge flag, checking ...
0
votes
1answer
707 views
Connect Error (2054) - mysql_old_password issue still not solved
i use php 5.4.3 and i want to connect to a MySQL DB remotely (php script resides on a different server than the db) with normal oop way:
$mysqli = new mysqli(DB_HOST, DB_USER, DB_PASS, DB_NAME);
...
0
votes
1answer
132 views
consequences of using “innodb_flush_method = O_DIRECT” without having a battery backed write cache? or on a KVM guest?
Mysql 5.5.29 Innodb- 128GB Ram - 32 cores - Raid 10 SSD.
Our server which is a dedicated KVM guest on a 'baremetal' is hosting our heavy read-write DB server.
Everything is file-per-table. ...
0
votes
0answers
182 views
What to do to reduce first byte time after removing slow queries?
I've set long_query_time to 1 sec and found only 2 query which took 1 sec to execute at 2 different points of time since yesterday. So I don't suppose such 2 queries cause my first byte time to be 3 ...
