In my daily tests, i was testing to restore mysql database from debian9 to centos7. its not really cool because the version release of mysql on Debian is higher then Centos,
i did small research and found the solution, and i though maybe its fine to share it with people in this blog.
[root@localhost ~]# mysql -u root -p osradar < osradar.sql Enter password: ERROR 1273 (HY000) at line 25: Unknown collation: 'utf8mb4_unicode_520_ci'
Some times you get this error :
1273 - Unknown collation: 'utf8mb4_unicode_ci'
Please follow the bellow steps:
[root@localhost ~]# sed -i 's/utf8mb4/utf8/g' osradar.sql [root@localhost ~]# sed -i 's/utf8_unicode_ci/utf8_general_ci/g' osradar.sql [root@localhost ~]# sed -i 's/utf8_unicode_520_ci/utf8_general_ci/g' osradar.sql
osradar.sql is my MySQL database
Restore the Database now
[root@localhost ~]# mysql -u root -p Enter password: Welcome to the MariaDB monitor. Commands end with ; or \g. Your MariaDB connection id is 23 Server version: 5.5.56-MariaDB MariaDB Server Copyright (c) 2000, 2017, Oracle, MariaDB Corporation Ab and others. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. MariaDB [(none)]> use osradar; Reading table information for completion of table and column names You can turn off this feature to get a quicker startup with -A Database changed MariaDB [osradar]> show tables; +------------------------+ | Tables_in_osradar | +------------------------+ | wp_commentmeta |
Please share your experience with this solution on the comments bellow.