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Re: Comparing InnoDB to MyISAM Performance

If I have table with a lot of reads, but ones a month I write to this table I should use MyISAM.
Am I right?

Re: Discover What's New in MySQL 5.5 Replication

Hi
the replay is available from the following URL:
http://mysql.com/news-and-events/on-demand-webinars/display-od-572.html

We will also be hosting a webinar focused on the latest enhancements to MySQL 5.6 on December 14th at 0900pacific / 1700GMT. Registrations isn't yet open, but should be available early next week in the "Free Web Seminars" section on the MySQL home page: http://www.mysql.com/

Focus on Backup

In the latest episode of our “Meet The MySQL Experts” podcast, Sveta Smirnova from the MySQL technical support organization gives us an overview of the common MySQL backup practices and tools, and talks about the benefits of using MySQL Enterprise Backup.

Enjoy the podcast!

Get the 95% for Your Index Prefix

I was playing around with an idea recently...
I wanted to find out, what is the lowest number of characters needed to satisfy 95% of the values in a column? 95% is to rule out outliers.


I plan on using this when I want to get a bit agressive with the indexes on a table that gets inserted to very often. But until now, I haven't had a good query to find it quickly.

So, I thought a bit and came up with the following query:

mysql> show create table filenames\G
*************************** 1. row ***************************
       Table: show_filename
Create Table: CREATE TABLE `filenames` (
  `id` int(11) NOT NULL,
  `filename` …

[Read more]
OurSQL Episode 67: HA and Replication

News/Feedback
Last week we talked about how we learn and keep up to date with changes to MySQL. Mark Grennan of mysqlfanboy.com posted his own list of MySQL resources.

Call for papers for Percona Live: MySQL Conference & Expo 2012 is open until Monday, December 5th. To submit a paper, first register as a speaker at http://www.percona.com/live/mysql-conference-2012/user/register and then go to My Account -> Submit Proposal.

read more

Per-database information in performance_schema, please!

This is a follow-up om my first Blog on performance_schema that appeared here:

One particular request that we had frequently from our users is to have status variables exposed per database and maybe even per table. Currently this is not possible. Not even with MySQL 5.6.3 with the P_S additions found there. I have frequently experienced that users get frustrated why ‘such a simple thing’ is not possible and I have the impression that they sometimes tend not to believe me!

Examples: the (GLOBAL) status variables ‘slow_queries’, ‘com_update’ etc. has no database/table -level information. For those MySQL users that run a lot of different applications (both standard applications – Forums software, Blogging software …

[Read more]
FLUSH STATUS surprise?

What does FLUSH STATUS do? We all know that it will simply reset all status variables (except for ‘uptime’) to same values as immediately after a server restart. Just google it and you will find that behaviour statet on hundreds of sites on the Internet.

But NO – it is not true! Not anymore. MySQL documentation:
http://dev.mysql.com/doc/refman/5.5/en/flush.html

“This option adds the current thread’s session status variable values to the global values and resets the session values to zero. It also resets the counters for key caches (default and named) to zero and sets Max_used_connections to the current number of open connections.”

This bug report

[Read more]
Re: Discover What's New in MySQL 5.5 Replication

Thank you for posting this. I tried to register, but I get "The Web Seminar you have accessed does either not exist or has already taken place."
When is the next event?
Thanks.

Re: MySQL 5.5: What's New in Replication

Does MySQL replication support Oracle11g Database as target? Or we have to use Goldengate for that?
Thanks.

Re: Discover What's New in MySQL 5.5 Replication

Thank you for posting this. I tried to register, but I get "The Web Seminar you have accessed does either not exist or has already taken place."
When is the next event?
Thanks.

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