MySQL DBA Tutorials & HowTos

MySQL tutorials and howtos for database admins, sysadmins, DBAs, webmasters, and Unix/Linux users who wish to improve their database skills such as backup, security, optimization, management and much more (rss feed).

Find Out MySQL Version

by on January 21, 2011 · 0 comments

How do I find out mysql version under Linux or Unix operating systems?

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I‘m trying to make backups using the mysqldump command and getting the following error or warning:

mysqldump: Got error: 1044: Access denied for user ‘root’@’localhost’ to database ‘information_schema’ when using LOCK TABLES

How do I fix this problem?

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I‘m getting the following error in my mysql.log file:

100630 2:03:39 [ERROR] /usr/libexec/mysqld: Incorrect key file for table ‘./app2_db/aix_data_user_c.MYI'; try to repair it

How do I fix this error and repair my table under UNIX or Linux operating systems?

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How do I install Oracle (Sun) MySQL database server v5.x under Ubuntu Linux operating systems? How do I add a new user and database for Apache web server and php access under Ubuntu Linux?

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I‘m trying to set ‘thread_concurrency to 8 under Linux MySQL server. But when I try to restart the mysql server, I get the following error:

[ERROR] /usr/local/libexec/mysqld: unknown variable ‘thread_concurrency=8′

How do I fix this problem?

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I got new server and installed phpMyAdmin. But whenever I visit the phpmyadmin url it says:

Cannot load mysql extension. Please check your PHP configuration

How do I fix this problem under CentOS / RHEL / Fedora Linux Apache web server?

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I‘m trying to install mysql-server package under Debian using the following command:

apt-get install mysql-server-5.0 mysql-common

But I’m getting an error which read as follows:

Reading package lists… Done
Building dependency tree
Reading state information… Done
The following packages were automatically installed and are no longer required:
libdevel-symdump-perl liburi-perl libhtml-parser-perl libapr1 libhtml-tree-perl libpq5 libhtml-tagset-perl libwww-perl
Use ‘apt-get autoremove’ to remove them.
The following extra packages will be installed:
libdbd-mysql-perl libmysqlclient15off mysql-client-5.0
Suggested packages:
tinyca
The following NEW packages will be installed:
libdbd-mysql-perl libmysqlclient15off mysql-client-5.0 mysql-common mysql-server-5.0
0 upgraded, 5 newly installed, 0 to remove and 0 not upgraded.
E: Archive directory /var/cache/apt/archives/partial is missing.

How do I fix the problem?

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