I need to downgrade data from MySQL 5.7 to MySQL 5.1. are there any ways to do in simple steps? (backup and restore )T
There is a solution is step by step like downgrade from 5.7 to 5.6, and then to 5.5.
The Following link says step by step
Make sure you're not using features from 5.7, that are not avaliable in 5.1, for example utf8mb4 encoding (needed for emoji characters)
Then most safe option is to mysql_dump all databases via mysqldump, except for mysql (actually you need mysql.user table, but it's safer to recreate, other settings tables may and most probably will not fit)
Try restoring on staging server first, to see if restored db works the way you expect it to
Related
we know the supported logical upgrade method is:
5.1-5.5,
5.5-5.6,
5.6-5.7.
In each step, we mysqldump, then we need 3times.
If I mysqldump from 5.1, then install mysql5.7, we need 1 time mysqldump.
Can mysql 5.7 recognize mysqldump file from 5.1?
You should look at the differences that MySQL 5.7 offer compared to the older versions and see if it affects anything but considering how large of a jump it is, I find it hard it would "just work." In short, most likely not. Your best bet is to take your data in MySQL 5.1, upgrade it to 5.7 so your schema inherits all the changes that may have happened, and then make a new mysqldump of that.
Related sources:
https://dba.stackexchange.com/questions/123154/migrating-upgrading-a-mysql-5-1-schema-to-mysql-5-7-schema
Upgrading directly from MySQL 5.0 to 5.7
I am currently using mysql server 5.0 with innodb storage engine. I want to backup a database from source server and restore the same to one of the available destination servers.
Option 1: Use innodb_file_per_table option in my .cnf and try to copy the table.ibd file to the other server and recover. I saw examples over other websites where it was being supported in mysql 5.6, but I am not sure if that is supported in mysql server 5.0. I tried the steps given in https://dev.mysql.com/doc/refman/5.6/en/innodb-migration.html, but that did not work for me.
Option 2: Use mysqldump to get a dump of the database and use mysqlimport in the destination to perform mysql export/import. But, by doing so, I need to lock the database at source before performing the export. This can prevent any incoming requests to the source database while the mysqldump is ongoing.
I am still exploring other options, but I am not sure if option 1 is not viable due to mysql version 5.0 or because I am missing something.
http://dev.mysql.com/doc/refman/5.7/en/replication-howto.html
You are talking about replication.
When I was installing MySQL 5.6 if, there was a option to choose your MySQL database dir (I guess). I chose that option and set it to D:\ProgramData\MySQL\MySQL Server 5.6. I was hoping that there would be the same on MySQL 5.7 installation but there is not.
So, how to import the MySQL 5.6 database to 5.7?
There are several ways. Best one is to always have a full dump of the database in case you need to regenerate from zero.
Other way is to allow mysql installer to do the upgrade. If the installer fails to take the previous datadir, you can manually specify it modifying the my.ini config file.
Search for an entry, which should look like this:
# Path to the database root
datadir=D:/ProgramData/MySQL/MySQL Server 5.6/Data
Hope this helps.
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.
I am totally new to databases. I would like to create a database; I am going to make a small project which is going to use DB. I am going to use Maria DB as it is totally free for commercial use.
The question is: Can I use MySQL workbench program to create a database and then transform/change it to MariaDB?
From my experience -- Sure, you can use MySQL Workbench with MariaDB.
However, I have tried basic functionalities only, like queries, schema design etc. Not sure about compatibility of advanced features.
So my experiences are, yes you can use MySQL Workbench for MariaDB database designs.
However I needed to change the "Default Target MySQL Version" to 5.7.
This can be done by going to: Edit->Preferences in the menu. And finally to Modeling->MySQL.
Since the latest MySQL version, v8.x, the SQL statements are not compatible with MariaDB statements (like creating an index). MariabDB creating an index on a table:
INDEX `fk_rsg_sub_level_rsg_top_level1_idx` (`rgs_top_level_id` ASC)
vs
MySQL:
INDEX `fk_rsg_sub_level_rsg_top_level1_idx` (`rgs_top_level_id` ASC) VISIBLE
MariaDB can't handle this VISIBLE keyword in this example. Using an old MySQL Version, MySQL Workbench will forward engineer a compatible MariaDB SQL file.
Currently (Oct 2019) the generated SQL_MODE output is still compatible with MariaDB. Just like InnoDB, which is also preferred when using MariaDB in most cases.
Just to list a few other options:
MySQL Workbench
Heidi Sql
SQLyog
No.
The latest version of Workbench 8.0 is not supported in MySQL.
Yes, although connecting to view existing database on a remote MariaDB server will crash the current client (6.3.10). I use it mainly to deploy database models and that works fine, even on remote servers.
I just deployed to a MariaDB 10.3 server with that client and it worked fine, see screenshot.