MySQL/MariaDB – [ERROR] Plugin InnoDB registration as a STORAGE ENGINE failed error

I was migrating server and rsync all databases to new mariadb server. When tried to start mariadb on new server, I was getting this error:

Apr 24 18:30:26 my.server.com mysqld[9703]: 2018-04-24 18:30:26 140298644924544 [ERROR] Plugin 'InnoDB' init function returned error.
Apr 24 18:30:26 my.server.com mysqld[9703]: 2018-04-24 18:30:26 140298644924544 [ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed.
Apr 24 18:30:26 my.server.com mysqld[9703]: 2018-04-24 18:30:26 140298644924544 [Note] Plugin 'FEEDBACK' is disabled.
Apr 24 18:30:26 my.server.com mysqld[9703]: 2018-04-24 18:30:26 140298644924544 [ERROR] Unknown/unsupported storage engine: InnoDB
Apr 24 18:30:26 my.server.com mysqld[9703]: 2018-04-24 18:30:26 140298644924544 [ERROR] Aborting

Solution is to generate new ib_logfile0 and ib_logfile1 files. Just try steps bellow.

[root@lol ~]# cd /var/lib/mysql
[root@lol mysql]# mv ib_logfile0 ib_logfile0-backup 
[root@lol mysql]# mv ib_logfile1 ib_logfile1-backup
[root@lol mysql]# systemctl start mysql
[root@lol mysql]# mysql
Welcome to the MariaDB monitor.

It should work.

Restore MSSQL database with new name

Restoring old MSSQL database to a new database with different name can be a little bit tricky on Windows. This was done on Windows Server 2008 with SQL Server 2008 Management Studio installed.

Here is how:

  1. Login to your SQL Server Management Studio.
  2. Create new database with name that you wish. In this case, we will create database name “new_database”. Just right click on “Databases” and then “New database”.
    mssqlrestpre1

  3. Select newly created database and right click on it, then select “Tasks -> Restore -> Database …” In “Destination for restore”, select database that we created in second step – new_database. Select it from drop down menu “To database”. In “Source for restore”, select  “From device” and then navigate to your database backup file from which you want to restore database.
    mssqlrestpre2 

    Also click on “Options” on left side of the window (Select a page). Then check “Overwrite the existing database”. Make sure that you pointed to right database files (Restore the database files as -> Restore As field). When done, click OK. Restore process will start.
    mssqlrestpre3 

  4. Your database should now be restored from your old database backup file to your newly created database new_database.
    mssqlrestpre4

Create dump of specific tables from mysql database

You can simply create backups of specific tables with mysqldump.

mysqldump -u  -p  databasename table1 table2 table3 ... > mysqldump_file.sql

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