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Problem of the day, DESC gives error.
I hit this interesting problem last night on 5.0.51a. mysql> use information_schema; mysql> desc routines; ERROR 1 (HY000): Can't create/write to file '/home/tmp/#sql_fea_1.MYD' (Errcode: 24) mysql> show create table routinesG *************************** 1.
Read moreWhat do MySQL staff think of the acquisition?
It finally dawned on me while reflecting on the year past this Sunday that the missing voice since the announcement of the Oracle acquisition of Sun Microsystems (and therefore MySQL) has been the MySQL employees.
Read moreCouldn’t load plugin named ‘innodb’
As part of reviewing storage engines for my work on the upcoming Expert PHP and MySQL book, I finally had an excuse to try out the InnoDB Plugin for MySQL which is now conveniently included with MySQL 5.
Read moreIs your database schema in sync?
If you have more then a single MySQL database for your production environment, e.g. a development and test environment, or a MySQL replication topology, ensuring your schema’s are in sync can be task that requires some time if not managed correctly.
Read moreMonitoring MySQL with MONyog
It just works. In absence of any MySQL monitoring for your site, I have found no solution that gets you operational as quickly and easily. MONyog can be deployed in 60 seconds, and configured in another 60 seconds.
Read moreMySQL Permissions – Restarting MySQL
I am working with a client that is using managed hosting on dedicated servers. This has presented new challenges in obtaining the right permissions to undertake MySQL tasks but not have either ‘root’ or ‘mysql’ access and not have to involve a third party everytime.
Read moreMonitoring MySQL resource limits
I have for the first time seen a client implement MySQL Resource Limits . I got the following error tying to connect to the database. $ mysql -udba -p ERROR 1226 (42000): User 'dba' has exceeded the 'max_user_connections' resource (current value: 10) I see from the documentation the ability to see the limits in the mysql.
Read moreMonitoring MySQL Product Options
I’ve had plenty of comments on specific products to Monitoring MySQL Options before providing the completed list. Here are the results from my survey to give everybody a more complete list.
Read moreMonitoring MySQL options
My recent poll What alert monitoring do you use? showed 25% of the 58 respondents to bravely state they had no MySQL monitoring. I see 1 in 3, ~33% in my consulting so this is consistent.
Read moreUnknown locale for statpack & maatkit
I had trouble today on a client site using my MySQL power tools Maatkit and Statpack . $ ~/scripts/statpack.py --files=mysql.status.091015.080001.txt,mysql.status.091015.090001.txt Traceback (most recent call last): File "/home/rbradfor/scripts/statpack.py", line 563, in ?
Read moreTake a look at mk-query-digest
Q: What SQL is running on your MySQL database server now? A: The bane of pain for MySQL DBA’s when there is no official MySQL instrumentation that is dynamic and fine grained sufficiently to solve this problem at the SQL interface.
Read moreSimplicity
Simplicity – Always strive for a simpler solution. This is a principle I have held and have used for many years in my technology based profession. It’s very surprising that many organizations when addressing a problem forget to look at what is indeed right infront of them.
Read moreLooking just at the data
There are many areas you need to review when addressing MySQL performance such as current database load, executed SQL statements, connections, configuration parameters, memory usage, disk to memory ratio, hardware performance & bottlenecks just to name a few.
Read moreWhat alert monitoring do you use?
More importantly, how often to you confirm access to your server and database with that alert monitoring? With a client yesterday the primary database server while still usable and serving connections for a while, but was not accessible via SSH to investigate performance issues.
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