I have a sql dump file generated by mysqldump of mariadb 10.2.
I want to set up a new db server using mariadb 10.4 with data coming from the sql dump file.
Is the upgrade process necessary in this case? If so, should I first restore the sql file into db and then run mysql_upgrade or somehow directly upgrade the sql file and then restore into the db?
Well I would suggest that you follow the upgrade guides given on the MariaDb website. See Upgrading MariaDB. It lists articles on upgrading from one major version of MariaDb to the next.
There is no guide for directly upgrading from version 10.2 to 10.4, so you should first upgrade from 10.2 to 10.3 by following Upgrading from MariaDB 10.2 to MariaDB 10.3. Then upgrade from 10.3 to 10.4 by following Upgrading from MariaDB 10.3 to MariaDB 10.4.
Make sure to read the incompatibilities between the major versions
Related
when I check my mysql version , I see that I have 10.4.14-MariaDB but I know the last version is 8 so how to explain that?
MariaDB 10.2, MariaDB 10.3, and MariaDB 10.4 function as limited drop-in replacements for MySQL 5.7, as far as InnoDB is concerned. However, the implementation differences continue to grow in each new MariaDB version.
MariaDB 10.0 and MariaDB 10.1 function as limited drop-in replacements for MySQL 5.6, as far as InnoDB is concerned. However, there are some implementation differences in some features.
MariaDB 5.5 functions as a drop-in replacement for MySQL 5.5.
MariaDB 5.1, MariaDB 5.2, and MariaDB 5.3 function as drop-in replacements for MySQL 5.1.
source: https://mariadb.com/kb/en/mariadb-vs-mysql-compatibility/
i have Azure Database for MySQL of version 5.6 in AZURE and i read somewhere that MYSQL support in slave in higher version (5.7) than the master (5.6) but i did not found any reference to it in AZURE doc and did not found any option to configure version when creating replica via AZURE portal , is this possible to configure replica in higher version specifically salve of MYSQL version 5.7 to MYSQL 5.6 master in Azure Database for MySQL ?
Azure Database for MySQL support version 5.6 and 5.7.
You can get all the supported versions and release notes from this document:
Supported Azure Database for MySQL server versions:
MySQL Version 5.6: Refer to the MySQL release notes to learn
more about improvements and fixes in this version.
MySQL Version 5.7: Refer to the MySQL release notes to learn
more about improvements and fixes in this version.
In Azure Database for MySQL,Using dump and restore help you upgrade across MySQL versions. For more details, please see: Common uses for dump and restore
To avoid any compatibility issues, ensure the same version of MySQL is used on the source and destination systems when dumping databases. For example, if your existing MySQL server is version 5.7, then you should migrate to Azure Database for MySQL configured to run version 5.7.
If you don't need to care about the compatibility issues, you can try to use this way to
downgrade and configure the version 5.7 to 5.6.
Hope this helps.
I have installed the latest version of Workbench but i need to download a db mysql in 5.6
I look around and follow other question but no one resolve problem.
https://imgur.com/a/LJwYXTx
Workbench and Mysql 8
You can download archived versions from here. Or if you have the MySQL server installed, you can find mysqldump.exe in the bin folder.
The previous versions of XAMPP would include MySQL. Now they include MariaDB.
I used to use the previous versions but now I upgraded XAMPP and it has MariaDB.
So what exactly is the difference between them? Or are they both similar?
What changes should I make in my programming approach?
Should I switch over to the previous version?
According to the MariaDB documentation:
Until MariaDB 5.5, MariaDB versions functioned as a "drop-in replacement" for the equivalent MySQL version, with some limitations. From MariaDB 10.0, it is usually still very easy to upgrade from MySQL.
[...]
This means that for many cases, you can just uninstall MySQL and install MariaDB and you are good to go. There is not generally any need to convert any data files.
Note also that according to the same documentation page:
However, the implementation differences continue to grow in each new MariaDB version.
To know the exact differences between MySQL and MariaDB versions, see the specific pages in the documentation:
Incompatibilities and Feature Differences Between MariaDB 10.5 and MySQL 8.0
Incompatibilities between MariaDB 10.4 and MySQL 8.0
Incompatibilities between MariaDB 10.3 and MySQL 5.7
Incompatibilities between MariaDB 10.2 and MySQL 5.7
You can also check this answer on Software Engineering Stack Exchange
I do plan to migrate the database from version 5.1 to version 5.6.
I want to do this by using mysqldump:
Export (by mysqldump) data from MySQL DB 5.1 to sql file,
Import (by mysqldump) this sql file that MySQL 5.6 database,
Do not have a complex database that migration can be associated with some risks?
What to look for?
I can not do update database from 5.1 a 5.6, because I can not stop the production base at this point.
Generally speaking it is safe (and supported) to upgrade using mysqldump.
My best suggestion is to use mysqldump from MyQSL 5.6 against the 5.1 server, as newer versions have quite a few fixes to ensure the correct order when dumping foreign keys and other bits and pieces. Your 5.1 version may have these fixes already, but using the newer version won't hurt in any case.
Ensure you run mysql_upgrade after importing the database into 5.6, and then restart the server, as per the MySQL upgrade guide:
http://dev.mysql.com/doc/refman/5.6/en/upgrading.html
Alternatively if you can update in two steps, you can do a in-place binary upgrade by first upgrading to 5.5.x before 5.6.x, ensuring to run mysql_upgrade during both steps.